Index

Classes

Name Description

Name	Description
`AcceptanceTest`	Acceptance test for assets.
`AccessPermit`	A permit is sometimes needed to provide legal access to land or equipment. For example, local authority permission for road works.
`AccountingUnit`	Unit for accounting; use either 'energyUnit' or 'currencyUnit' to specify the unit for 'value'.
`AccountMovement`	Credit/debit movements for an account.
`AccountNotification`	Notifications for move-in, move-out, delinquencies, etc.
`Accumulator`	Accumulator represents an accumulated (counted) Measurement, e.g. an energy value.
`AccumulatorLimit`	Limit values for Accumulator measurements.
`AccumulatorLimitSet`	An AccumulatorLimitSet specifies a set of Limits that are associated with an Accumulator measurement.
`AccumulatorReset`	This command resets the counter value to zero.
`AccumulatorValue`	AccumulatorValue represents an accumulated (counted) MeasurementValue.
`ACDCConverter`	A unit with valves for three phases, together with unit control equipment, essential protective and switching devices, DC storage capacitors, phase reactors and auxiliaries, if any, used for conversion.
`ACDCConverterDCTerminal`	A DC electrical connection point at the AC/DC converter. The AC/DC converter is electrically connected also to the AC side. The AC connection is inherited from the AC conducting equipment in the same way as any other AC equipment. The AC/DC converter DC terminal is separate from generic DC terminal to restrict the connection with the AC side to AC/DC converter and so that no other DC conducting equipment can be connected to the AC side.
`ACDCTerminal`	An electrical connection point (AC or DC) to a piece of conducting equipment. Terminals are connected at physical connection points called connectivity nodes.
`AceTariffType`	The Area Control Error tariff type that is applied or used.
`ACLineSegment`	A wire or combination of wires, with consistent electrical characteristics, building a single electrical system, used to carry alternating current between points in the power system. For symmetrical, transposed three phase lines, it is sufficient to use attributes of the line segment, which describe impedances and admittances for the entire length of the segment. Additionally impedances can be computed by using length and associated per length impedances. The BaseVoltage at the two ends of ACLineSegments in a Line shall have the same BaseVoltage.nominalVoltage. However, boundary lines may have slightly different BaseVoltage.nominalVoltages and variation is allowed. Larger voltage difference in general requires use of an equivalent branch.
`ACLineSegmentPhase`	Represents a single wire of an alternating current line segment.
`ActionRequest`	Action request against an existing Trade.
`ActivePowerLimit`	Limit on active power flow.
`ActivityRecord`	Records activity for an entity at a point in time; activity may be for an event that has already occurred or for a planned activity.
`AdjacentCASet`	Groups Adjacent Control Areas.
`AggregatedPnode`	An aggregated pricing node is a specialized type of pricing node used to model items such as System Zone, Default Price Zone, Custom Price Zone, Control Area, Aggregated Generation, Aggregated Particpating Load, Aggregated Non-Participating Load, Trading Hub, Designated Control Area(DCA) Zone.
`AggregateNode`	An aggregated node can define a typed grouping further defined by the AnodeType enumeratuion. Types range from System Zone/Regions to Market Energy Regions to Aggregated Loads and Aggregated Generators.
`AggregateScore`	An aggregated indicative scoring by an analytic, which is based on other analytic scores, that can be used to characterize the health of or the risk associated with one or more assets.
`Agreement`	Formal agreement between two parties defining the terms and conditions for a set of services. The specifics of the services are, in turn, defined via one or more service agreements.
`AirCompressor`	Combustion turbine air compressor which is an integral part of a compressed air energy storage (CAES) plant.
`AlertTypeList`	A named list of alert types. Note: the name of the list is reflected in the .name attribute (inherited from IdentifiedObject).
`AllocationResult`	Models Market clearing results. Indicates market horizon, interval based. Used by a market quality system for billing and settlement purposes.
`AllocationResultValues`	Models Market clearing results in terms of price and MW values.
`AlternateModel`	n/a
`AlternateModelGroup`	n/a
`AltGeneratingUnitMeas`	A prioritized measurement to be used for the generating unit in the control area specification.
`AltTieMeas`	A prioritized measurement to be used for the tie flow as part of the control area specification.
`Analog`	Analog represents an analog Measurement.
`AnalogControl`	An analog control used for supervisory control.
`AnalogLimit`	Limit values for Analog measurements.
`AnalogLimitSet`	An AnalogLimitSet specifies a set of Limits that are associated with an Analog measurement.
`AnalogMeasurementValueQuality`	Measurement quality flags for Analog Values.
`AnalogValue`	AnalogValue represents an analog MeasurementValue.
`Analytic`	An algorithm or calculation for making an assessment about an asset or asset grouping for lifecycle decision making.
`AnalyticScore`	An indicative scoring by an analytic that can be used to characterize the health of or the risk associated with one or more assets. The analytic score reflects the results of an execution of an analytic against an asset or group of assets.
`AncillaryServiceClearing`	Model of results of market clearing with respect to Ancillary Service products.
`AnnotatedProjectDependency`	n/a
`ApparentPowerLimit`	Apparent power limit.
`Appointment`	Meeting time and location.
`Approver`	Person who accepted/signed or rejected the document.
`AreaLoadBid`	AreaLoadBid is not submitted by a market participant into the Markets. Instead, it is simply an aggregation of all LoadBids contained wtihin a specific SubControlArea. This entity should inherit from Bid for representation of the timeframe (startTime, stopTime) and the market type.
`AreaLoadCurve`	Area load curve definition.
`AreaReserveSpec`	The control area's reserve specification.
`ASRequirements`	Models Ancillary Service Requirements. Describes interval for which the requirement is applicable.
`AssemblyDescription`	A description for how to assemble model parts for a specific purpose.
`AssemblyManifest`	A collection of model parts when combined form a case or part of a case.
`Asset`	Tangible resource of the utility, including power system equipment, various end devices, cabinets, buildings, etc. For electrical network equipment, the role of the asset is defined through PowerSystemResource and its subclasses, defined mainly in the Wires model (refer to IEC61970-301 and model package IEC61970::Wires). Asset description places emphasis on the physical characteristics of the equipment fulfilling that role.
`AssetAnalog`	Definition of type of analog useful in asset domain.
`AssetContainer`	Asset that is aggregation of other assets such as conductors, transformers, switchgear, land, fences, buildings, equipment, vehicles, etc.
`AssetDeployment`	Deployment of asset deployment in a power system resource role.
`AssetDiscrete`	Definition of type of discrete useful in asset domain.
`AssetFunction`	Function performed by an asset.
`AssetGroup`	A grouping of assets created for a purpose such as fleet analytics, inventory or compliance management.
`AssetHealthEvent`	An asset health-related event that is created by an analytic. The event is a record of a change in asset health.
`AssetInfo`	Set of attributes of an asset, representing typical datasheet information of a physical device that can be instantiated and shared in different data exchange contexts: - as attributes of an asset instance (installed or in stock) - as attributes of an asset model (product by a manufacturer) - as attributes of a type asset (generic type of an asset as used in designs/extension planning).
`AssetLocationHazard`	Potential hazard related to the location of an asset. Examples are trees growing under overhead power lines, a park being located by a substation (i.e., children climb fence to recover a ball), a lake near an overhead distribution line (fishing pole/line contacting power lines), dangerous neighbour, etc.
`AssetModelCatalogue`	Catalogue of available types of products and materials that are used to build or install, maintain or operate an Asset. Each catalogue item is for a specific product (AssetModel) available from a specific supplier.
`AssetModelCatalogueItem`	Provides pricing and other relevant information about a specific manufacturer's product (i.e., AssetModel), and its price from a given supplier. A single AssetModel may be availble from multiple suppliers. Note that manufacturer and supplier are both types of organisation, which the association is inherited from Document.
`AssetOrganisationRole`	Role an organisation plays with respect to asset.
`AssetOwner`	Owner of the asset.
`AssetPropertyCurve`	An Asset Property that is described through curves rather than as a data point. The relationship is to be defined between an independent variable (X-axis) and one or two dependent variables (Y1-axis and Y2-axis).
`AssetStringMeasurement`	Definition of type of string measurement useful in asset domain.
`AssetTemperaturePressureAnalog`	Temperature or pressure type of asset analog.
`AssetTestLab`	Test lab that performs various types of testing related to assets.
`AssetTestSampleTaker`	Identity of person/organization that took sample.
`AssetUser`	Organisation that is a user of the asset.
`Assignment`	An assignment is given to an ErpPerson, Crew, Organisation, Equipment Item, Tool, etc. and may be used to perform Work, WorkTasks, Procedures, etc. TimeSchedules may be set up directly for Assignments or indirectly via the associated WorkTask. Note that these associations are all inherited through the recursive relationship on Document.
`ASTMStandard`	Standard published by ASTM (ASTM International).
`AsynchronousMachine`	A rotating machine whose shaft rotates asynchronously with the electrical field. Also known as an induction machine with no external connection to the rotor windings, e.g. squirrel-cage induction machine.
`AsynchronousMachineDynamics`	Asynchronous machine whose behaviour is described by reference to a standard model expressed in either time constant reactance form or equivalent circuit form or by definition of a user-defined model. Parameter details: Asynchronous machine parameters such as Xl, Xs, etc. are actually used as inductances in the model, but are commonly referred to as reactances since, at nominal frequency, the PU values are the same. However, some references use the symbol L instead of X.
`AsynchronousMachineEquivalentCircuit`	The electrical equations of all variations of the asynchronous model are based on the AsynchronousEquivalentCircuit diagram for the direct- and quadrature- axes, with two equivalent rotor windings in each axis. Equations for conversion between equivalent circuit and time constant reactance forms: Xs = Xm + Xl X' = Xl + Xm x Xlr1 / (Xm + Xlr1) X'' = Xl + Xm x Xlr1 x Xlr2 / (Xm x Xlr1 + Xm x Xlr2 + Xlr1 x Xlr2) T'o = (Xm + Xlr1) / (omega₀ x Rr1) T''o = (Xm x Xlr1 + Xm x Xlr2 + Xlr1 x Xlr2) / (omega₀ x Rr2 x (Xm + Xlr1) Same equations using CIM attributes from AsynchronousMachineTimeConstantReactance class on left of "=" and AsynchronousMachineEquivalentCircuit class on right (except as noted): xs = xm + RotatingMachineDynamics.statorLeakageReactance xp = RotatingMachineDynamics.statorLeakageReactance + xm x xlr1 / (xm + xlr1) xpp = RotatingMachineDynamics.statorLeakageReactance + xm x xlr1 x xlr2 / (xm x xlr1 + xm x xlr2 + xlr1 x xlr2) tpo = (xm + xlr1) / (2 x pi x nominal frequency x rr1) tppo = (xm x xlr1 + xm x xlr2 + xlr1 x xlr2) / (2 x pi x nominal frequency x rr2 x (xm + xlr1).
`AsynchronousMachineTimeConstantReactance`	Parameter details: If X'' = X', a single cage (one equivalent rotor winding per axis) is modelled. The “p” in the attribute names is a substitution for a “prime” in the usual parameter notation, e.g. tpo refers to T'o. The parameters used for models expressed in time constant reactance form include: - RotatingMachine.ratedS (MVAbase); - RotatingMachineDynamics.damping (D); - RotatingMachineDynamics.inertia (H); - RotatingMachineDynamics.saturationFactor (S1); - RotatingMachineDynamics.saturationFactor120 (S12); - RotatingMachineDynamics.statorLeakageReactance (Xl); - RotatingMachineDynamics.statorResistance (Rs); - .xs (Xs); - .xp (X'); - .xpp (X''); - .tpo (T'o); - .tppo (T''o).
`AsynchronousMachineUserDefined`	Asynchronous machine whose dynamic behaviour is described by a user-defined model.
`AtmosphericAnalog`	Analog (float) measuring an atmospheric condition.
`AtmosphericPhenomenon`	An atmospheric phenomenon with a base and altitude providing the vertical coverage (combined with the Location to provide three dimensional space).
`AttributeInstanceComponent`	A class used to provide information about an attribute.
`AttributeProperty`	Property for a particular attribute that contains name and value.
`Auction`	A class providing the identification and type of an auction.
`Author`	Person who created document or activity record.
`AuxiliaryAccount`	Variable and dynamic part of auxiliary agreement, generally representing the current state of the account related to the outstanding balance defined in auxiliary agreement.
`AuxiliaryAgreement`	An ad-hoc auxiliary account agreement associated with a customer agreement, not part of the customer's account, but typically subject to formal agreement between customer and supplier (utility). Typically this is used to collect revenue owed by the customer for other services or arrears accrued with the utility for other services. It is typically linked to a prepaid token purchase transaction, thus forcing the customer to make a payment towards settlement of the auxiliary account balance whenever the customer needs to purchase a prepaid token for electricity. The present status of the auxiliary agreement can be defined in the context of the utility's business rules, for example: enabled, disabled, pending, over recovered, under recovered, written off, etc.
`AuxiliaryCost`	Models Market clearing results for Auxiliary costs.
`AuxiliaryEquipment`	AuxiliaryEquipment describe equipment that is not performing any primary functions but support for the equipment performing the primary function. AuxiliaryEquipment is attached to primary equipment via an association with Terminal.
`AuxiliaryObject`	Models Auxiliary Values.
`AuxiliaryValues`	Models Auxiliary Values.
`AvailablityPlan`	The collection of all the availability schedules for a given time range. Only one availability plan shall be valid for the same period.
`Bank`	Organisation that is a commercial bank, agency, or other institution that offers a similar service.
`BankAccount`	Bank account.
`BankAccountDetail`	Details of a bank account.
`BaseCaseConstraintLimit`	Possibly time-varying max MW or MVA and optionally Min MW limit or MVA limit (Y1 and Y2, respectively) assigned to a contingency analysis base case. Use CurveSchedule XAxisUnits to specify MW or MVA. To be used only if the BaseCaseConstraintLimit differs from the DefaultConstraintLimit.
`BaseFrequency`	The BaseFrequency class describes a base frequency for a power system network. In case of multiple power networks with different frequencies, e.g. 50 Hz or 60 Hz each network will have its own base frequency class. Hence it is assumed that power system objects having different base frequencies appear in separate documents where each document has a single base frequency instance.
`BasePower`	The BasePower class defines the base power used in the per unit calculations.
`BaseReading`	Common representation for reading values. Note that a reading value may have multiple qualities, as produced by various systems ('ReadingQuality.source').
`BaseVoltage`	Defines a system base voltage which is referenced.
`BaseWork`	Common representation for work and work tasks.
`BasicIntervalSchedule`	Schedule of values at points in time.
`BatteryUnit`	An electrochemical energy storage device.
`Bay`	A collection of power system resources (within a given substation) including conducting equipment, protection relays, measurements, and telemetry. A bay typically represents a physical grouping related to modularization of equipment.
`Bid`	Represents both bids to purchase and offers to sell energy or ancillary services in an RTO-sponsored market.
`BidDistributionFactor`	This class allows SC to input different time intervals for distribution factors.
`BidError`	This class represent the error information for a bid that is detected during bid validation.
`BidHourlyProductSchedule`	Containment for bid parameters that are dependent on a market product type.
`BidHourlySchedule`	Containment for bid hourly parameters that are not product dependent.
`BidPriceCap`	This class represent the bid price cap.
`BidPriceCurve`	Relationship between unit operating price in $/hour (Y-axis) and unit output in MW (X-axis).
`BidPriceSchedule`	Defines bid schedules to allow a product bid to use specified bid price curves for different time intervals.
`BidSelfSched`	Defines self schedule values to be used for specified time intervals.
`BidSet`	As set of mutually exclusive bids for which a maximum of one may be scheduled. Of these generating bids, only one generating bid can be scheduled at a time.
`BidTimeSeries`	The formal specification of specific characteristics related to a bid.
`BilateralExchangeActor`	BilateralExchangeActor describes an actor that provides ICCP data, consumes ICCP data or both. The ICCP data provider lists the data it makes available to an ICCP data consumer. This data is described by ProvidedBilateralPoints. The relation between an ICCP data provider and a consumer is established by a BilateralExchangeAgreement. It is up to the ICCP data consumer to select what ProvidedBilateralPoints to use. The selection made is not described in this information model.
`BilateralExchangeAgreement`	This is the representation of the information exchange agreement between peers.
`BilateralTransaction`	Bilateral transaction
`BillDeterminant`	Models various charges to support billing and settlement.
`BlockDispatchComponent`	n/a
`BlockDispatchInstruction`	n/a
`BlockDispatchOrder`	n/a
`BlockingFunction`	n/a
`BranchEndFlow`	Dynamic flows and ratings associated with a branch end.
`BranchGroup`	A group of branch terminals whose directed flow summation is to be monitored. A branch group need not form a cutset of the network.
`BranchGroupTerminal`	A specific directed terminal flow for a branch group.
`Breaker`	A mechanical switching device capable of making, carrying, and breaking currents under normal circuit conditions and also making, carrying for a specified time, and breaking currents under specified abnormal circuit conditions e.g. those of short circuit.
`BreakerInfo`	Properties of breaker assets.
`BusbarSection`	A conductor, or group of conductors, with negligible impedance, that serve to connect other conducting equipment within a single substation. Voltage measurements are typically obtained from voltage transformers that are connected to busbar sections. A bus bar section may have many physical terminals but for analysis is modelled with exactly one logical terminal.
`BusbarSectionInfo`	Busbar section data.
`Bushing`	Bushing asset.
`BushingInfo`	Bushing datasheet information.
`BushingInsulationPF`	Bushing insulation power factor condition as a result of a test. Typical status values are: Acceptable, Minor Deterioration or Moisture Absorption, Major Deterioration or Moisture Absorption, Failed.
`BusinessCase`	Business justification for capital expenditures, usually addressing operations and maintenance costs as well.
`BusinessPlan`	A BusinessPlan is an organized sequence of predetermined actions required to complete a future organizational objective. It is a type of document that typically references a schedule, physical and/or logical resources (assets and/or PowerSystemResources), locations, etc.
`BusinessRole`	A business role that this organisation plays. A single organisation typically performs many functions, each one described as a role.
`BusNameMarker`	Used to apply user standard names to TopologicalNodes. Associated with one or more terminals that are normally connected with the bus name. The associated terminals are normally connected by non-retained switches. For a ring bus station configuration, all BusbarSection terminals in the ring are typically associated. For a breaker and a half scheme, both BusbarSections would normally be associated. For a ring bus, all BusbarSections would normally be associated. For a "straight" busbar configuration, normally only the main terminal at the BusbarSection would be associated.
`BWRSteamSupply`	Boiling water reactor used as a steam supply to a steam turbine.
`Cabinet`	Enclosure that offers protection to the equipment it contains and/or safety to people/animals outside it.
`CableInfo`	Cable data.
`CAESPlant`	Compressed air energy storage plant.
`CalculationMethodHierarchy`	The hierarchy of calculation methods used to derive this measurement. .
`CalculationMethodOrder`	The order of this calculation method in a hierarchy of calculation methods.
`Capability`	Capabilities of a crew.
`Card`	Documentation of the tender when it is a type of card (credit, debit, etc).
`Cashier`	The operator of the point of sale for the duration of CashierShift. Cashier is under the exclusive management control of Vendor.
`CashierShift`	The operating shift for a cashier, during which the cashier may transact against the cashier shift, subject to vendor shift being open.
`CatalogAssetType`	a Assets that may be used for planning, work or design purposes.
`CCAinverter`	n/a
`CCArectifierControl`	n/a
`ChangeSet`	Describes a set of changes that can be applied in different situations. A given registered target object MRID may only be referenced once by the contained change set members.
`ChangeSetMember`	A CRUD-style data object.
`Channel`	A single path for the collection or reporting of register values over a period of time. For example, a register which measures forward energy can have two channels, one providing bulk quantity readings and the other providing interval readings of a fixed interval size.
`Charge`	A charge element associated with other entities such as tariff structures, auxiliary agreements or other charge elements. The total charge amount applicable to this instance of charge is the sum of fixed and variable portion.
`ChargeComponent`	A Charge Component is a list of configurable charge quality items to feed into settlement calculation and/or bill determinants.
`ChargeGroup`	Charge Group is the grouping of Charge Types for settlement invoicing purpose. Examples such as Ancillary Services, Interests, etc.
`ChargeProfile`	A type of profile for financial charges.
`ChargeProfileData`	Model of various charges associated with an energy profile to support billing and settlement.
`ChargeType`	Charge Type is the basic level configuration for settlement to process specific charges for invoicing purpose. Examples such as: Day Ahead Spinning Reserve Default Invoice Interest Charge, etc.
`Cheque`	The actual tender when it is a type of cheque.
`CIGREStandard`	Standard published by CIGRE (Council on Large Electric Systems).
`Circuit`	n/a
`Clamp`	A Clamp is a galvanic connection at a line segment where other equipment is connected. A Clamp does not cut the line segment. A Clamp is ConductingEquipment and has one Terminal with an associated ConnectivityNode. Any other ConductingEquipment can be connected to the Clamp ConnectivityNode.
`ClampAction`	Action on Clamp as a switching step
`ClassificationCondition`	A classification condition used to define preconditions that must be met by a phenomena classification.
`ClearanceAction`	Action on clearance document as a switching step.
`ClearanceDocument`	Safety document used to authorise work on conducting equipment in the field. Tagged equipment is not allowed to be operated.
`CloudCondition`	A classified cloud phenomenon with a type.
`CnodeDistributionFactor`	Participation factors per Cnode. Used to calculate "participation" of Cnode in an AggregateNode. Each Cnode associated to an AggregateNode would be assigned a participation factor for its participation within the AggregateNode.
`CogenerationPlant`	A set of thermal generating units for the production of electrical energy and process steam (usually from the output of the steam turbines). The steam sendout is typically used for industrial purposes or for municipal heating and cooling.
`CombinedCycleConfiguration`	Configuration options for combined cycle units. For example, a Combined Cycle with (CT1, CT2, ST1) will have (CT1, ST1) and (CT2, ST1) configurations as part of(1CT + 1STlogicalconfiguration).
`CombinedCycleConfigurationMember`	Configuration Member of CCP Configuration.
`CombinedCycleLogicalConfiguration`	Logical Configuration of a Combined Cycle plant. Operating Combined Cycle Plant (CCP) configurations are represented as Logical CCP Resources. Logical representation shall be used for Market applications to optimize and control Market Operations. Logical representation is also necessary for controlling the number of CCP configurations and to temper performance issues that may otherwise occur. For example,(2CT configuration),(1CT + 1ST configuration) are examples of logical configuration, without specifying the specific CT and ST participating in the configuration.
`CombinedCyclePlant`	A set of combustion turbines and steam turbines where the exhaust heat from the combustion turbines is recovered to make steam for the steam turbines, resulting in greater overall plant efficiency.
`CombinedCycleTransitionState`	Defines the available from and to Transition States for the Combine Cycle Configurations.
`CombustionTurbine`	A prime mover that is typically fuelled by gas or light oil.
`ComFunction`	Communication function of communication equipment or a device such as a meter.
`Command`	A Command is a discrete control used for supervisory control.
`ComMedia`	Communication media such as fibre optic cable, power-line, telephone, etc.
`CommitmentClearing`	Models results of market clearing which call for commitment of units.
`Commitments`	Provides the necessary information (on a resource basis) to capture the Startup/Shutdown commitment results. This information is relevant to all markets.
`CommodityDefinition`	Commodities in the context of IEC 62325 are MarketProducts (energy, regulation, reserve, etc) traded at a specific location, which in this case is a Pnode (either a specific pricing node or a pricing area or zone defined as a collection of pricing nodes). The CommodityDefinition is a container for these two parameters, plus the unit of measure and the currency in which the Commodity is traded. Each CommodityDefinition should be relatively static; defined once and rarely changed.
`CommodityPrice`	The CommodityPrice class is used to define the price of a commodity during a given time interval. The interval may be long, e.g. a year, or very short, e.g. 5 minutes. There will be many instances of the CommodityPrice class for each instance of the CommodityDefinition to which it is associated. Note that there may be more than once price associated with a given interval and these variances are described by the association (or associations) with the PriceDescriptor class.
`ComModule`	An asset having communications capabilities that can be paired with a meter or other end device to provide the device with communication ability, through associated communication function. An end device that has communications capabilities through embedded hardware can use that function directly (without the communication module), or combine embedded communication function with additional communication functions provided through an external communication module (e.g. zigbee).
`CommunicationLink`	The connection to remote units is through one or more communication links. Reduntant links may exist. The CommunicationLink class inherits PowerSystemResource. The intention is to allow CommunicationLinks to have Measurements. These Measurements can be used to model link status as operational, out of service, unit failure etc.
`CompatibleUnit`	A pre-planned job model containing labor, material, and accounting requirements for standardized job planning.
`CompleteModelToBeDeleted`	A complete model can be used in applications to perform meaningful calculations, e.g. a study case in offline tools or a real time model in a SCADA/EMS.
`ComplianceEvent`	Compliance events are used for reporting regulatory or contract compliance issues and/or variances. These might be created as a consequence of local business processes and associated rules. It is anticipated that this class will be customised extensively to meet local implementation needs. Use inherited 'type' to indicate that, for example, expected performance will not be met or reported as mandated.
`CompositeSwitch`	A model of a set of individual Switches normally enclosed within the same cabinet and possibly with interlocks that restrict the combination of switch positions. These are typically found in medium voltage distribution networks. A CompositeSwitch could represent a Ring-Main-Unit (RMU), or pad-mounted switchgear, with primitive internal devices such as an internal bus-bar plus 3 or 4 internal switches each of which may individually be open or closed. A CompositeSwitch and a set of contained Switches can also be used to represent a multi-position switch e.g. a switch that can connect a circuit to Ground, Open or Busbar.
`CompositeSwitchInfo`	Properties of a composite switch.
`ConcentricNeutralCableInfo`	Concentric neutral cable data.
`ConditionFactor`	This is to specify the various condition factors for a design that may alter the cost estimate or the allocation.
`ConductingEquipment`	The parts of the AC power system that are designed to carry current or that are conductively connected through terminals.
`Conductor`	Combination of conducting material with consistent electrical characteristics, building a single electrical system, used to carry current between points in the power system.
`ConfigurationEvent`	Used to report details on creation, change or deletion of an entity or its configuration.
`ConformLoad`	ConformLoad represent loads that follow a daily load change pattern where the pattern can be used to scale the load with a system load.
`ConformLoadGroup`	A group of loads conforming to an allocation pattern.
`ConformLoadSchedule`	A curve of load versus time (X-axis) showing the active power values (Y1-axis) and reactive power (Y2-axis) for each unit of the period covered. This curve represents a typical pattern of load over the time period for a given day type and season.
`CongestionArea`	Designated Congestion Area Definition (DCA).
`CongestionRevenueRight`	Congestion Revenue Rights (CRR) class that is inherited from a Document class. A CRR is a financial concept that is used to hedge congestion charges. The CRR is usually settled based on the Locational Marginal Prices (LMPs) that are calculated in the day-ahead market. These LMPs are determined by the Day-ahead resource schedules/bids. CRRs will not hedge against marginal losses. If the congestion component of LMP at the sink is greater than at the source, then the CRR owner is entitled to receive a portion of congestion revenues. If the congestion component at the sink is less than at the source, then an obligation-type CRR owner will be charged, but an option-type CRR owner will not.
`ConnectDisconnectFunction`	A function that will disconnect and reconnect the customer's load under defined conditions.
`ConnectivityNode`	Connectivity nodes are points where terminals of AC conducting equipment are connected together with zero impedance.
`ConnectivityNodeContainer`	A base class for all objects that may contain connectivity nodes or topological nodes.
`Connector`	A conductor, or group of conductors, with negligible impedance, that serve to connect other conducting equipment within a single substation and are modelled with a single logical terminal.
`ConstraintClearing`	Groups all items associated with Binding Constraints and Constraint Violations per interval and market.
`ConstraintDuration`	Duration constraint to activate, to put in operation, to deactivate, ... a given event.
`ConstraintResults`	Provides the Market results for the constraint processing for either the DAM or RTM. The data includes the constraint type (binding or violated), the solved value for the constraint, and the associated shadow price.
`ConstraintTerm`	A constraint term is one element of a linear constraint.
`ConsumptionTariffInterval`	One of a sequence of intervals defined in terms of consumption quantity of a service such as electricity, water, gas, etc. It is typically used in association with TariffProfile to define the steps or blocks in a step tariff structure, where startValue simultaneously defines the entry value of this step and the closing value of the previous step. Where consumption is >= startValue it falls within this interval and where consumption is < startValue it falls within the previous interval.
`Contingency`	An event threatening system reliability, consisting of one or more contingency elements.
`ContingencyConstraintLimit`	Possibly time-varying max MW or MVA and optionally Min MW limit or MVA limit (Y1 and Y2, respectively) assigned to a constraint for a specific contingency. Use CurveSchedule XAxisUnits to specify MW or MVA.
`ContingencyElement`	An element of a system event to be studied by contingency analysis, representing a change in status of a single piece of equipment.
`ContingencyEquipment`	Equipment whose in service status is to change, such as a power transformer or AC line segment.
`ContractDistributionFactor`	Distribution among resources at the sink point or source point.
`ContractorItem`	Contractor information for work task.
`ContractRight`	Provides definition of Transmission Ownership Right and Existing Transmission Contract identifiers for use by SCUC. RMR contract hosting: Startup lead time, Contract Service Limits, Max Service Hours, Max MWhs, Max Start-ups, Ramp Rate, Max Net Dependable Capacity, Min Capacity and Unit Substitution for DAM/RTM to retrieve.
`Control`	Control is used for supervisory/device control. It represents control outputs that are used to change the state in a process, e.g. close or open breaker, a set point value or a raise lower command.
`ControlAction`	Control executed as a switching step.
`ControlArea`	A control area is a grouping of generating units and/or loads and a cutset of tie lines (as terminals) which may be used for a variety of purposes including automatic generation control, power flow solution area interchange control specification, and input to load forecasting. All generation and load within the area defined by the terminals on the border are considered in the area interchange control. Note that any number of overlapping control area specifications can be superimposed on the physical model. The following general principles apply to ControlArea: 1. The control area orientation for net interchange is positive for an import, negative for an export. 2. The control area net interchange is determined by summing flows in Terminals. The Terminals are identified by creating a set of TieFlow objects associated with a ControlArea object. Each TieFlow object identifies one Terminal. 3. In a single network model, a tie between two control areas must be modelled in both control area specifications, such that the two representations of the tie flow sum to zero. 4. The normal orientation of Terminal flow is positive for flow into the conducting equipment that owns the Terminal. (i.e. flow from a bus into a device is positive.) However, the orientation of each flow in the control area specification must align with the control area convention, i.e. import is positive. If the orientation of the Terminal flow referenced by a TieFlow is positive into the control area, then this is confirmed by setting TieFlow.positiveFlowIn flag TRUE. If not, the orientation must be reversed by setting the TieFlow.positiveFlowIn flag FALSE.
`ControlAreaDesignation`	Indicates Control Area associated with self-schedule.
`ControlAreaGeneratingUnit`	A control area generating unit. This class is needed so that alternate control area definitions may include the same generating unit. It should be noted that only one instance within a control area should reference a specific generating unit.
`ControlAreaOperator`	Operates the Control Area. Approves and implements energy transactions. Verifies both Inter-Control Area and Intra-Control Area transactions for the power system before granting approval (and implementing) the transactions.
`ControlAreaSolutionData`	State Estimator Solution Pool Interchange and Losses.
`ControlledAppliance`	Appliance controlled with a PAN device control.
`CoolingPowerRating`	There are often stages of power which are associated with stages of cooling. For instance, a transformer may be rated 121kV on the primary, 15kV on the secondary and 4kV on the tertiary winding. These are voltage ratings and the power ratings are generally the same for all three windings and independent of the voltage ratings, there are instances where the tertiary may have a lower power rating. For example, for three stages, the power rating may be 15/20/25 MVA and the cooling is OA/FA/FOA. The 15 MVA rating goes with the OA cooling (Oil and Air cooling). This is called the self cooled rating as there are no external cooling enhancements. The 20 MVA rating goes with the FA cooling (Forced Air cooling), this means that when the fans are running and thus enhancing the cooling characteristics, the transformer can operate at a power level of 20 MVA. The 25 MVA rating goes with the FOA cooling (Forced Oil and Air cooling), this means that when the fans and pumps are running and thus enhancing the cooling characteristics even more than before, the transformer can operate at a power level of 25 MVA. This 15/20/25 MVA does not state how the power is split between the various windings. It may be 25 MVA input on the primary, 25 MVA output on the secondary and 0 MVA output on the tertiary. It may also operate at 25 MVA input on the primary, 17 MVA output on the secondary and 8 MVA output on the tertiary.
`CoordinateSystem`	Coordinate reference system.
`CostType`	A categorization for resources, often costs, in accounting transactions. Examples include: material components, building in service, coal sales, overhead, etc.
`Craft`	Craft of a person or a crew. Examples include overhead electric, underground electric, high pressure gas, etc. This ensures necessary knowledge and skills before being allowed to perform certain types of work.
`Crew`	Group of people with specific skills, tools, and vehicles.
`CrewMember`	Member of a crew.
`CrewType`	Custom description of the type of crew. This may be used to determine the type of work the crew can be assigned to. Examples include repair, tree trimming, switching, etc.
`CrossCompoundTurbineGovernorDynamics`	Turbine-governor cross-compound function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.
`CRRMarket`	Model that describes the Congestion Revenue Rights Auction Market.
`CRROrgRole`	Identifies a way in which an organisation may participate with a defined Congestion Revenue Right (CRR).
`CRRSegment`	CRRSegment represents a segment of a CRR in a particular time frame. The segment class contains amount, clearing price, start date and time, end date and time.
`CSCDynamics`	CSC function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.
`CsConverter`	DC side of the current source converter (CSC). The firing angle controls the dc voltage at the converter, both for rectifier and inverter. The difference between the dc voltages of the rectifier and inverter determines the dc current. The extinction angle is used to limit the dc voltage at the inverter, if needed, and is not used in active power control. The firing angle, transformer tap position and number of connected filters are the primary means to control a current source dc line. Higher level controls are built on top, e.g. dc voltage, dc current and active power. From a steady state perspective it is sufficient to specify the wanted active power transfer (ACDCConverter.targetPpcc) and the control functions will set the dc voltage, dc current, firing angle, transformer tap position and number of connected filters to meet this. Therefore attributes targetAlpha and targetGamma are not applicable in this case. The reactive power consumed by the converter is a function of the firing angle, transformer tap position and number of connected filter, which can be approximated with half of the active power. The losses is a function of the dc voltage and dc current. The attributes minAlpha and maxAlpha define the range of firing angles for rectifier operation between which no discrete tap changer action takes place. The range is typically 10-18 degrees. The attributes minGamma and maxGamma define the range of extinction angles for inverter operation between which no discrete tap changer action takes place. The range is typically 17-20 degrees.
`CSCtype1`	n/a
`CSCUserDefined`	Current source converter (CSC) function block whose dynamic behaviour is described by a user-defined model.
`CTTempActivePowerCurve`	Relationship between the combustion turbine's power output rating in gross active power (X-axis) and the ambient air temperature (Y-axis).
`CUAllowableAction`	Allowed actions: Install, Remove, Transfer, Abandon, etc.
`CUContractorItem`	Compatible unit contractor item.
`CUGroup`	A Compatible Unit Group identifies a set of compatible units which may be jointly utilized for estimating and designating jobs.
`CULaborCode`	Labor code associated with various compatible unit labor items.
`CULaborItem`	Compatible unit labor item.
`CUMaterialItem`	Compatible unit of a consumable supply item. For example, nuts, bolts, brackets, glue, etc.
`CurrentEmergencyScheduledInterchange`	Control area emergency schedules
`CurrentLimit`	Operational limit on current.
`CurrentRelay`	A device that checks current flow values in any direction or designated direction.
`CurrentScheduledInterchange`	Control area current net tie (scheduled interchange) sent to real time dispatch.
`CurrentState`	n/a
`CurrentTransformer`	Instrument transformer used to measure electrical qualities of the circuit that is being protected and/or monitored. Typically used as current transducer for the purpose of metering or protection. A typical secondary current rating would be 5A.
`CurrentTransformerInfo`	Properties of current transformer asset.
`CurtailmentProfile`	Curtailing entity must be providing at least one service to the EnergyTransaction. The CurtailmentProfile must be completely contained within the EnergyProfile timeframe for this EnergyTransaction.
`Curve`	A multi-purpose curve or functional relationship between an independent variable (X-axis) and dependent (Y-axis) variables.
`CurveData`	Multi-purpose data points for defining a curve. The use of this generic class is discouraged if a more specific class can be used to specify the X and Y axis values along with their specific data types.
`Customer`	Organisation receiving services from service supplier.
`CustomerAccount`	Assignment of a group of products and services purchased by the customer through a customer agreement, used as a mechanism for customer billing and payment. It contains common information from the various types of customer agreements to create billings (invoices) for a customer and receive payment.
`CustomerAgreement`	Agreement between the customer and the service supplier to pay for service at a specific service location. It records certain billing information about the type of service provided at the service location and is used during charge creation to determine the type of service.
`CustomerBillingInfo`	The creation of the monthly customer billing statements is the method employed to notify Customers of charges, adjustments and credits applied to their account for Services and Products. The actuall billing occurs through an ErpInvoice. The CustomerBillingInfo includes information from the payment, collection, meter reading, installed meter, service, site, customer, customer account, customer agreement, services and pricing subject areas. Each component price shows up as a separate line item on the ErpInvoice. The Customer Billing Statement may include collection and account messages, marketing/civic event messages and bill inserts. One Customer Billing Statement is produced for all Agreements under a CustomerAccount per billing cycle date defined in 'CustomerAccount.billingCycle'. The history of CustomerBillingInfo, Invoices and Payments is to be maintained in associated ActivityRecords.
`CustomerConsumer`	The energy buyer in the energy marketplace.
`CustomerNotification`	Conditions for notifying the customer about the changes in the status of their service (e.g., outage restore, estimated restoration time, tariff or service level change, etc.)
`Cut`	A cut separates a line segment into two parts. The cut appears as a switch inserted between these two parts and connects them together. As the cut is normally open there is no galvanic connection between the two line segment parts. But it is possible to close the cut to get galvanic connection. The cut terminals are oriented towards the line segment terminals with the same sequence number. Hence the cut terminal with sequence number equal to 1 is oriented to the line segment's terminal with sequence number equal to 1. The cut terminals also act as connection points for jumpers and other equipment, e.g. a mobile generator. To enable this, connectivity nodes are placed at the cut terminals. Once the connectivity nodes are in place any conducting equipment can be connected at them.
`CutAction`	Action on cut as a switching step.
`CUWorkEquipmentItem`	Compatible unit for various types of WorkEquipmentAssets, including vehicles.
`Cyclone`	A cyclone (or tropical cyclone), a rapidly-rotating storm system characterized by a low-pressure center, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain.
`DataSet`	A generic container of a version of instance data. The MRID can be used in an audit trail, not in reusable script intended to work with new versions of data. A dataset could be serialized multiple times and in multiple technologies, yet retain the same identity.
`DatasetArg`	A model operation argument referencing a dataset instance.
`DatasetArgDescription`	n/a
`DateAndOrTime`	The date and/or the time.
`DateInterval`	Interval between two dates.
`DateTimeInterval`	Interval between two date and time points, where the interval includes the start time but excludes end time.
`DayType`	Group of similar days. For example it could be used to represent weekdays, weekend, or holidays.
`DCBaseTerminal`	An electrical connection point at a piece of DC conducting equipment. DC terminals are connected at one physical DC node that may have multiple DC terminals connected. A DC node is similar to an AC connectivity node. The model requires that DC connections are distinct from AC connections.
`DCBreaker`	A breaker within a DC system.
`DCBusbar`	A busbar within a DC system.
`DCChopper`	Low resistance equipment used in the internal DC circuit to balance voltages. It has typically positive and negative pole terminals and a ground.
`DCConductingEquipment`	The parts of the DC power system that are designed to carry current or that are conductively connected through DC terminals.
`DCConverterUnit`	Indivisible operative unit comprising all equipment between the point of common coupling on the AC side and the point of common coupling – DC side, essentially one or more converters, together with one or more converter transformers, converter control equipment, essential protective and switching devices and auxiliaries, if any, used for conversion.
`DCDisconnector`	A disconnector within a DC system.
`DCEquipmentContainer`	A modelling construct to provide a root class for containment of DC as well as AC equipment. The class differ from the EquipmentContaner for AC in that it may also contain DCNode-s. Hence it can contain both AC and DC equipment.
`DCGround`	A ground within a DC system.
`DCLine`	Overhead lines and/or cables connecting two or more HVDC substations.
`DCLineSegment`	A wire or combination of wires not insulated from one another, with consistent electrical characteristics, used to carry direct current between points in the DC region of the power system.
`DCNode`	DC nodes are points where terminals of DC conducting equipment are connected together with zero impedance.
`DCSeriesDevice`	A series device within the DC system, typically a reactor used for filtering or smoothing. Needed for transient and short circuit studies.
`DCShunt`	A shunt device within the DC system, typically used for filtering. Needed for transient and short circuit studies.
`DCSwitch`	A switch within the DC system.
`DCTerminal`	An electrical connection point to generic DC conducting equipment.
`DCTopologicalIsland`	An electrically connected subset of the network. DC topological islands can change as the current network state changes, e.g. due to: - disconnect switches or breakers changing state in a SCADA/EMS. - manual creation, change or deletion of topological nodes in a planning tool. Only energised TopologicalNode-s shall be part of the topological island.
`DCTopologicalNode`	DC bus.
`DCvoltageControl`	DC voltage control used for voltage regulation.
`DecimalQuantity`	Quantity with decimal value and associated unit or currency information.
`DefaultBid`	DefaultBid is a generic class to hold Default Energy Bid, Default Startup Bid, and Default Minimum Load Bid: Default Energy Bid A Default Energy Bid is a monotonically increasing staircase function consisting at maximum 10 economic bid segments, or 10 ($/MW, MW) pairs. There are three methods for determining the Default Energy Bid: Cost Based: derived from the Heat Rate or Average Cost multiplied by the Gas Price Index plus 10%. LMP Based: a weighted average of LMPs in the preceding 90 days. Negotiated: an amount negotiated with the designated Independent Entity. Default Startup Bid A Default Startup Bid (DSUB) shall be calculated for each RMR unit based on the Startup Cost stored in the Master File and the applicable GPI and EPI. Default Minimum Load Bid A Default Minimum Load Bid (DMLB) shall be calculated for each RMR unit based on the Minimum Load Cost stored in the Master File and the applicable GPI.
`DefaultBidCurve`	Default bid curve for default energy bid curve and default startup curves (cost and time).
`DefaultBidCurveData`	Curve data for default bid curve and startup cost curve.
`DefaultConstraintLimit`	Possibly time-varying max MW or MVA and optionally Min MW limit or MVA limit (Y1 and Y2, respectively) applied as a default value if no specific constraint limits are specified for a contingency analysis. Use CurveSchedule XAxisUnits to specify MW or MVA.
`Delay`	All the measurements are filtered by a first lag element with a time constant TM.
`DemandResponseProgram`	Demand response program.
`DeploymentDate`	Dates for deployment events of an asset. May have multiple deployment type dates for this device and a compound type allows a query to return multiple dates.
`DERCurveData`	The DER curve data class provides the nominal, maximum and minimum values for a DER Monitorable parameter for a series of time intervals defined by the DER DispatchSchedule.
`DERFunction`	Specifies the list of functions that are supported.
`DERGroupDispatch`	Specifies the capabilities of the DER Group that are to be dispatched according to a schedule. Each dispatch identifies a DER Group and the specific monitorable parameter to be dispatched over a specific time interval.
`DERGroupForecast`	Specifies the forecasted values of the DERMonitorableParameters for a DER Group over a specific time interval.
`DERMonitorableParameter`	To define the DER monitorable parameters that will be forecasted and dispatched for a DER Group. Each parameter is represented as a Y Value at a point in time or on a curve as a function of time, which is represented on the X axis.
`Design`	A design for consideration by customers, potential customers, or internal work. Note that the Version of design is the revision attribute that is inherited from Document.
`DesignLocation`	A logical part of the design (e.g., pole and all equipment on a pole). This includes points and spans.
`DesignLocationCU`	Compatible unit at a given design location.
`DiagnosisDataSet`	The result of a problem (typically an asset failure) diagnosis. Contains complete information like what might be received from a lab doing forensic analysis of a failed asset.
`Diagram`	The diagram being exchanged. The coordinate system is a standard Cartesian coordinate system and the orientation attribute defines the orientation. The initial view related attributes can be used to specify an initial view with the x,y coordinates of the diagonal points.
`DiagramObject`	An object that defines one or more points in a given space. This object can be associated with anything that specializes IdentifiedObject. For single line diagrams such objects typically include such items as analog values, breakers, disconnectors, power transformers, and transmission lines.
`DiagramObjectGluePoint`	This is used for grouping diagram object points from different diagram objects that are considered to be glued together in a diagram even if they are not at the exact same coordinates.
`DiagramObjectPoint`	A point in a given space defined by 3 coordinates and associated to a diagram object. The coordinates may be positive or negative as the origin does not have to be in the corner of a diagram.
`DiagramObjectStyle`	A reference to a style used by the originating system for a diagram object. A diagram object style describes information such as line thickness, shape such as circle or rectangle etc, and colour.
`DiagramStyle`	The diagram style refers to a style used by the originating system for a diagram. A diagram style describes information such as schematic, geographic, etc.
`DifferentialModel`	A set of statements describing the changes in the network model. The statement is defined in the incremental model.
`DimensionsInfo`	As applicable, the basic linear, area, or volume dimensions of an asset, asset type (AssetModel) or other type of object (such as land area). Units and multipliers are specified per dimension.
`DINStandard`	Standard published by DIN (German Institute of Standards).
`DiscExcContIEEEDEC1A`	IEEE type DEC1A discontinuous excitation control model that boosts generator excitation to a level higher than that demanded by the voltage regulator and stabilizer immediately following a system fault. Reference: IEEE 421.5-2005, 12.2.
`DiscExcContIEEEDEC2A`	IEEE type DEC2A model for discontinuous excitation control. This system provides transient excitation boosting via an open-loop control as initiated by a trigger signal generated remotely. Reference: IEEE 421.5-2005 12.3.
`DiscExcContIEEEDEC3A`	IEEE type DEC3A model. In some systems, the stabilizer output is disconnected from the regulator immediately following a severe fault to prevent the stabilizer from competing with action of voltage regulator during the first swing. Reference: IEEE 421.5-2005 12.4.
`DisconnectingCircuitBreaker`	A circuit breaking device including disconnecting function, eliminating the need for separate disconnectors.
`Disconnector`	A manually operated or motor operated mechanical switching device used for changing the connections in a circuit, or for isolating a circuit or equipment from a source of power. It is required to open or close circuits when negligible current is broken or made.
`DiscontinuousExcitationControlDynamics`	Discontinuous excitation control function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.
`DiscontinuousExcitationControlUserDefined`	Discontinuous excitation control function block whose dynamic behaviour is described by a user-defined model.
`Discrete`	Discrete represents a discrete Measurement, i.e. a Measurement representing discrete values, e.g. a Breaker position.
`DiscreteMeasurementValueQuality`	Measurement quality flags for Discrete Values.
`DiscreteValue`	DiscreteValue represents a discrete MeasurementValue.
`DispatchInstReply`	Response from registered resource acknowledging receipt of dispatch instructions.
`DispatchSchedule`	Specifies the characteristics of the time schedule over which DERMonitorableParameters are dispatched.
`DistributedResourceActualEvent`	A demand response event is created when there is a need to call upon resources to respond to demand adjustment requests. These events are created by ISO/RTO system operations and managed by a demand response management system (DRMS). These events may or may not be coordinated with the Market Events and a defined Energy Market. The event will call for the deployment of a number of registered resources, or for deployment of resources within a zone (an organizational area within the power system that contains a number of resources).
`DistributionFactorSet`	A containing class that groups all the distribution factors within a market. This is calculated daily for DA factors and hourly for RT factors.
`DobleStandard`	Standard published by Doble.
`Document`	Parent class for different groupings of information collected and managed as a part of a business process. It will frequently contain references to other objects, such as assets, people and power system resources.
`DocumentOrganisationRole`	Role an organisation plays with respect to documents.
`DocumentPersonRole`	Person role with respect to documents.
`Domain`	An area of activity defined within the energy market.
`DopInstruction`	Provides the necessary information (on a resource basis) to capture the Dispatch Operating Point (DOP) results on a Dispatch interval. This information is only relevant to the RT interval market.
`DotInstruction`	Provides the necessary information (on a resource basis) to capture the Dispatch Operating Target (DOT) results on a Dispatch interval. This information is only relevant to the RT interval market.
`DrumBoiler`	Drum boiler.
`DuctBank`	A duct contains individual wires in the layout as specified with associated wire spacing instances; number of them gives the number of conductors in this duct.
`Due`	Details on amounts due for an account.
`DynamicSchedule`	A continuously variable component of a control area's MW net interchange schedule. Dynamic schedules are sent and received by control areas.
`DynamicsFunctionBlock`	Abstract parent class for all Dynamics function blocks.
`EarthFaultCompensator`	A conducting equipment used to represent a connection to ground which is typically used to compensate earth faults. An earth fault compensator device modelled with a single terminal implies a second terminal solidly connected to ground. If two terminals are modelled, the ground is not assumed and normal connection rules apply.
`Earthquake`	An earthquake.
`Editor`	Person who modified the document.
`ElectronicAddress`	Electronic address information.
`EmissionAccount`	Accounts for tracking emissions usage and credits for thermal generating units. A unit may have zero or more emission accounts, and will typically have one for tracking usage and one for tracking credits.
`EmissionCurve`	Relationship between the unit's emission rate in units of mass per hour (Y-axis) and output active power (X-axis) for a given type of emission. This curve applies when only one type of fuel is being burned.
`EndDevice`	Asset container that performs one or more end device functions. One type of end device is a meter which can perform metering, load management, connect/disconnect, accounting functions, etc. Some end devices, such as ones monitoring and controlling air conditioners, refrigerators, pool pumps may be connected to a meter. All end devices may have communication capability defined by the associated communication function(s). An end device may be owned by a consumer, a service provider, utility or otherwise. There may be a related end device function that identifies a sensor or control point within a metering application or communications systems (e.g., water, gas, electricity). Some devices may use an optical port that conforms to the ANSI C12.18 standard for communications.
`EndDeviceAction`	Action/command performed by an end device on a device other than the end device.
`EndDeviceCapability`	Inherent capabilities of an end device (i.e., the functions it supports).
`EndDeviceControl`	Instructs an end device (or an end device group) to perform a specified action.
`EndDeviceControlType`	Detailed description for a control produced by an end device. Values in attributes allow for creation of recommended codes to be used for identifying end device controls as follows: ....
`EndDeviceEvent`	Event detected by a device function associated with the end device.
`EndDeviceEventDetail`	Name-value pair, specific to end device events.
`EndDeviceEventType`	Detailed description for an event produced by an end device. Values in attributes allow for creation of recommended codes to be used for identifying end device events as follows: ....
`EndDeviceFunction`	Function performed by an end device such as a meter, communication equipment, controllers, etc.
`EndDeviceGroup`	Abstraction for management of group communications within a two-way AMR system or the data for a group of related end devices. Commands can be issued to all of the end devices that belong to the group using a defined group address and the underlying AMR communication infrastructure. A DERGroup and a PANDeviceGroup is an EndDeviceGroup.
`EndDeviceInfo`	End device data.
`EndDeviceTiming`	Timing for the control actions of end devices.
`EnergyArea`	Describes an area having energy production or consumption. Specializations are intended to support the load allocation function as typically required in energy management systems or planning studies to allocate hypothesized load levels to individual load points for power flow analysis. Often the energy area can be linked to both measured and forecast load levels.
`EnergyComponent`	n/a
`EnergyConnection`	A connection of energy generation or consumption on the power system model.
`EnergyConsumer`	Generic user of energy - a point of consumption on the power system model. EnergyConsumer.pfixed, .qfixed, .pfixedPct and .qfixedPct have meaning only if there is no LoadResponseCharacteristic associated with EnergyConsumer or if LoadResponseCharacteristic.exponentModel is set to False.
`EnergyConsumerAction`	Action to connect or disconnect the Energy Consumer from its Terminal
`EnergyConsumerPhase`	A single phase of an energy consumer.
`EnergyGroup`	n/a
`EnergyMarket`	Energy and Ancillary Market (e.g. Energy, Spinning Reserve, Non-Spinning Reserve) with a description of the Market operation control parameters.
`EnergyPriceCurve`	Relationship between a price in $(or other monetary unit) /hour (Y-axis) and a MW value (X-axis).
`EnergyPriceIndex`	An Energy Price Index for each Resource is valid for a period (e.g. daily) that is identified by a Valid Period Start Time and a Valid Period End Time. An Energy Price Index is in $/MWh.
`EnergyProduct`	An EnergyProduct is offered commercially as a ContractOrTariff.
`EnergyProfile`	Specifies the start time, stop time, level for an EnergyTransaction.
`EnergySchedulingType`	Used to define the type of generation for scheduling purposes.
`EnergySource`	A generic equivalent for an energy supplier on a transmission or distribution voltage level.
`EnergySourceAction`	Action on energy source as a switching step.
`EnergySourcePhase`	Represents the single phase information of an unbalanced energy source.
`EnergyTransaction`	Specifies the schedule for energy transfers between interchange areas that are necessary to satisfy the associated interchange transaction.
`EnergyTypeReference`	n/a
`EnvironmentalAlert`	An environmental alert issued by a provider or system.
`EnvironmentalAnalog`	Analog (float) measurement of relevance in the environmental domain.
`EnvironmentalCodedValue`	An environmental value described using a coded value. A triplicate of enumerated values representing intensity, coverage, type of weather is used. These may be concatenated into the string value.
`EnvironmentalDataAuthority`	An entity defining classifications or categories of environmental information, like phenomena or alerts.
`EnvironmentalDataProvider`	Entity providing environmental data. Could be an observed weather data provider, an entity providing forecasts, an authority providing alerts, etc.
`EnvironmentalDependentLimit`	This is a environmental based limit dependency model for calculating operational limits.
`EnvironmentalDiscrete`	Discrete (integer) measurement of relevance in the environmental domain.
`EnvironmentalEvent`	An environmental event to which one or more forecasts or observations may be tied and which may relate to or affect one or more assets. This class is intended to be used as a means of grouping forecasts and/or observations and could be used for a variety of purposes, including: to define a 'named' event like Hurricane Katrina and allow the historic (or forecast) values for phenomena and measurements (precipitation, temperature) across time to be associated with it to identify assets that were (or are forecast to be) affected by a phenomenon or set of measurements
`EnvironmentalInformation`	Abstract class (with concrete child classes of Observation and Forecast) that groups phenomenon and/or environmental value sets.
`EnvironmentalLocationType`	Type of environmental location. Used when an environmental alert or phenomenon has multiple locations associated with it.
`EnvironmentalMonitoringStation`	An environmental monitoring station, examples of which could be a weather station or a seismic monitoring station.
`EnvironmentalPhenomenon`	The actual or forecast characteristics of an environmental phenomenon at a specific point in time (or during a specific time interval) that may have both a center and area/line location.
`EnvironmentalStringMeasurement`	String measurement of relevance in the environmental domain.
`EPAStandard`	Standard published by EPA (United States Environmental Protection Agency).
`Equipment`	The parts of a power system that are physical devices, electronic or mechanical.
`EquipmentContainer`	A modelling construct to provide a root class for containing equipment.
`EquipmentFault`	A fault applied at the terminal, external to the equipment. This class is not used to specify faults internal to the equipment.
`EquipmentLimitSeriesComponent`	This represents one instance of an equipment that contributes to the calculation of an operational limit.
`EquipmentUnavailabilitySchedule`	n/a
`EquivalentBranch`	The class represents equivalent branches. In cases where a transformer phase shift is modelled and the EquivalentBranch is spanning the same nodes, the impedance quantities for the EquivalentBranch shall consider the needed phase shift.
`EquivalentEquipment`	The class represents equivalent objects that are the result of a network reduction. The class is the base for equivalent objects of different types.
`EquivalentInjection`	This class represents equivalent injections (generation or load). Voltage regulation is allowed only at the point of connection.
`EquivalentNetwork`	A class that groups electrical equivalents, including internal nodes, of a network that has been reduced. The ConnectivityNodes contained in the equivalent are intended to reflect internal nodes of the equivalent. The boundary Connectivity nodes where the equivalent connects outside itself are not contained by the equivalent.
`EquivalentShunt`	The class represents equivalent shunts.
`ErpBankAccount`	Relationship under a particular name, usually evidenced by a deposit against which withdrawals can be made. Types of bank accounts include: demand, time, custodial, joint, trustee, corporate, special, and regular accounts. A statement of transactions during a fiscal period and the resulting balance is maintained on each account. For Payment metering, the account is associated with Bank and Supplier, reflecting details of the bank account used for depositing revenue collected by TokenVendor. The name of the account holder should be specified in 'name' attribute.
`ErpBOM`	Information that generally describes the Bill of Material Structure and its contents for a utility. This is used by ERP systems to transfer Bill of Material information between two business applications.
`ErpBomItemData`	An individual item on a bill of materials.
`ErpChartOfAccounts`	Accounting structure of a business. Each account represents a financial aspect of a business, such as its Accounts Payable, or the value of its inventory, or its office supply expenses.
`ErpCompetency`	Information that describes aptitudes of a utility employee. Unlike Skills that an ErpPerson must be certified to perform before undertaking certain type of assignments (to be able to perfrom a Craft), ErpCompetency has more to do with typical Human Resource (HR) matters such as schooling, training, etc.
`ErpDocument`	Shadow class for Document, to isolate subclassing from this package. If any subclass gets normative and needs inheritance, it will inherit directly from Document.
`ErpEngChangeOrder`	General Utility Engineering Change Order information.
`ErpIdentifiedObject`	Shadow class for IdentifiedObject, to isolate subclassing from this package. If any subclass gets normative and needs inheritance, it will inherit directly from IdentifiedObject.
`ErpInventory`	Utility inventory-related information about an item or part (and not for description of the item and its attributes). It is used by ERP applications to enable the synchronization of Inventory data that exists on separate Item Master databases. This data is not the master data that describes the attributes of the item such as dimensions, weight, or unit of measure - it describes the item as it exists at a specific location.
`ErpInventoryCount`	This is related to Inventory physical counts organized by AssetModel. Note that a count of a type of asset can be accomplished by the association inherited by AssetModel (from Document) to Asset. It enables ERP applications to transfer an inventory count between ERP and the actual physical inventory location. This count may be a cycle count or a physical count.
`ErpInvoice`	A roll up of invoice line items. The whole invoice has a due date and amount to be paid, with information such as customer, banks etc. being obtained through associations. The invoice roll up is based on individual line items that each contain amounts and descriptions for specific services or products.
`ErpInvoiceLineItem`	An individual line item on an invoice.
`ErpIssueInventory`	Can be used to request an application to process an issue or request information about an issue.
`ErpItemMaster`	Any unique purchased part for manufactured product tracked by ERP systems for a utility. Item, as used by the OAG, refers to the basic information about an item, including its attributes, cost, and locations. It does not include item quantities. Compare to the Inventory, which includes all quantities and other location-specific information.
`ErpJournal`	Book for recording accounting transactions as they occur. Transactions and adjustments are first recorded in a journal, which is like a diary of instructions, advising which account to be charged and by how much. A journal represents a change in the balances of a business's financial accounts. Many tasks or transactions throughout an enterprise will result in the creation of a journal. Some examples are creating a customer invoice, paying a vendor, transferring inventory, or paying employees.
`ErpJournalEntry`	Details of an individual entry in a journal, which is to be posted to a ledger on the posting date.
`ErpLedBudLineItem`	Individual entry of a given Ledger Budget, typically containing information such as amount, accounting date, accounting period, and is associated with the applicable general ledger account.
`ErpLedger`	In accounting transactions, a ledger is a book containing accounts to which debits and credits are posted from journals, where transactions are initially recorded. Journal entries are periodically posted to the ledger. Ledger Actual represents actual amounts by account within ledger within company or business area. Actual amounts may be generated in a source application and then loaded to a specific ledger within the enterprise general ledger or budget application.
`ErpLedgerBudget`	Information for utility Ledger Budgets. They support the transfer budget amounts between all possible source applications throughout an enterprise and a general ledger or budget application.
`ErpLedgerEntry`	Details of an individual entry in a ledger, which was posted from a journal on the posted date.
`ErpPayable`	A transaction that represents an invoice from a supplier. A payable (or voucher) is an open item, approved and ready for payment, in the Accounts Payable ledger.
`ErpPayableLineItem`	Of an ErpPayable, a line item references an ErpInvoiceLineitem or other source such as credit memos.
`ErpPayment`	Payment infromation and status for any individual line item of an ErpInvoice (e.g., when payment is from a customer). ErpPayable is also updated when payment is to a supplier and ErpReceivable is updated when payment is from a customer. Multiple payments can be made against a single line item and an individual payment can apply to more that one line item.
`ErpPersonnel`	Information that applies to the basic data about a utility person, used by ERP applications to transfer Personnel data for a worker.
`ErpPOLineItem`	Of an ErpPurchaseOrder, this is an individually ordered item or product along with the quantity, price and other descriptive information.
`ErpProjectAccounting`	Utility Project Accounting information, used by ERP applications to enable all relevant sub-systems that submit single sided transactions to transfer information with a Project Accounting Application. This would include, but not necessarily be limited to: Accounts Payable, Accounts Receivable, Budget, Order Management, Purchasing, Time and Labor, Travel and Expense.
`ErpPurchaseOrder`	A document that communicates an order to purchase goods from a buyer to a supplier. The PurchaseOrder carries information to and from the buyer and supplier. It is a legally binding document once both Parties agree to the contents and the specified terms and conditions of the order.
`ErpQuote`	Document describing the prices of goods or services provided by a supplier. It includes the terms of the purchase, delivery proposals, identification of goods or services ordered, as well as their quantities.
`ErpQuoteLineItem`	Of an ErpQuote, the item or product quoted along with quantity, price and other descriptive information.
`ErpRecDelvLineItem`	Of an ErpReceiveDelivery, this is an individually received good or service by the Organisation receiving goods or services. It may be used to indicate receipt of goods in conjunction with a purchase order line item.
`ErpReceivable`	Transaction representing an invoice, credit memo or debit memo to a customer. It is an open (unpaid) item in the Accounts Receivable ledger.
`ErpReceiveDelivery`	Transaction for an Organisation receiving goods or services that may be used to indicate receipt of goods in conjunction with a purchase order. A receivable is an open (unpaid) item in the Accounts Receivable ledger.
`ErpRecLineItem`	Individual entry of an ErpReceivable, it is a particular transaction representing an invoice, credit memo or debit memo to a customer.
`ErpReqLineItem`	Information that describes a requested item and its attributes.
`ErpRequisition`	General information that applies to a utility requisition that is a request for the purchase of goods or services. Typically, a requisition leads to the creation of a purchase order to a specific supplier.
`ErpSalesOrder`	General purpose Sales Order is used for utility service orders, etc. As used by the OAG, the SalesOrder is a step beyond a PurchaseOrder in that the receiving entity of the order also communicates SalesInformoration about the Order along with the Order itself.
`ErpSiteLevelData`	For a utility, general information that describes physical locations of organizations or the location codes and their meanings. This enables ERP applications to ensure that the physical location identifiers are synchronized between the business applications.
`ErpTimeEntry`	An individual entry on an ErpTimeSheet.
`ErpTimeSheet`	Time sheet for employees and contractors. Note that ErpTimeSheet inherits the relationship to ErpPerson from Document.
`EstimatedRestorationTime`	The Estimated Restoration Time (ERT) for a single outage
`ExcAC1A`	Modified IEEE AC1A alternator-supplied rectifier excitation system with different rate feedback source.
`ExcAC2A`	Modified IEEE AC2A alternator-supplied rectifier excitation system with different field current limit.
`ExcAC3A`	Modified IEEE AC3A alternator-supplied rectifier excitation system with different field current limit.
`ExcAC4A`	Modified IEEE AC4A alternator-supplied rectifier excitation system with different minimum controller output.
`ExcAC5A`	Modified IEEE AC5A alternator-supplied rectifier excitation system with different minimum controller output.
`ExcAC6A`	Modified IEEE AC6A alternator-supplied rectifier excitation system with speed input.
`ExcAC8B`	Modified IEEE AC8B alternator-supplied rectifier excitation system with speed input and input limiter.
`ExcANS`	Italian excitation system. It represents static field voltage or excitation current feedback excitation system.
`ExcAVR1`	Italian excitation system corresponding to IEEE (1968) type 1 model. It represents an exciter dynamo and electromechanical regulator.
`ExcAVR2`	Italian excitation system corresponding to IEEE (1968) type 2 model. It represents an alternator and rotating diodes and electromechanic voltage regulators.
`ExcAVR3`	Italian excitation system. It represents an exciter dynamo and electric regulator.
`ExcAVR4`	Italian excitation system. It represents a static exciter and electric voltage regulator.
`ExcAVR5`	Manual excitation control with field circuit resistance. This model can be used as a very simple representation of manual voltage control.
`ExcAVR7`	IVO excitation system.
`ExcBBC`	Transformer fed static excitation system (static with ABB regulator). This model represents a static excitation system in which a gated thyristor bridge fed by a transformer at the main generator terminals feeds the main generator directly.
`ExcCZ`	Czech proportion/integral exciter.
`ExcDC1A`	Modified IEEE DC1A direct current commutator exciter with speed input and without underexcitation limiters (UEL) inputs.
`ExcDC2A`	Modified IEEE DC2A direct current commutator exciter with speed input, one more leg block in feedback loop and without underexcitation limiters (UEL) inputs. DC type 2 excitation system model with added speed multiplier, added lead-lag, and voltage-dependent limits.
`ExcDC3A`	Modified IEEE DC3A direct current commutator exciter with speed input, and deadband. DC old type 4.
`ExcDC3A1`	Modified old IEEE type 3 excitation system.
`ExcELIN1`	Static PI transformer fed excitation system ELIN (VATECH) - simplified model. This model represents an all-static excitation system. A PI voltage controller establishes a desired field current set point for a proportional current controller. The integrator of the PI controller has a follow-up input to match its signal to the present field current. A power system stabilizer with power input is included in the model.
`ExcELIN2`	Detailed excitation system ELIN (VATECH). This model represents an all-static excitation system. A PI voltage controller establishes a desired field current set point for a proportional current controller. The integrator of the PI controller has a follow-up input to match its signal to the present field current. Power system stabilizer models used in conjunction with this excitation system model: PssELIN2, PssIEEE2B, Pss2B.
`ExcHU`	Hungarian excitation system, with built-in voltage transducer.
`ExcIEEEAC1A`	IEEE 421.5-2005 type AC1A model. The model represents the field-controlled alternator-rectifier excitation systems designated type AC1A. These excitation systems consist of an alternator main exciter with non-controlled rectifiers. Reference: IEEE 421.5-2005, 6.1.
`ExcIEEEAC2A`	IEEE 421.5-2005 type AC2A model. The model represents a high initial response field-controlled alternator-rectifier excitation system. The alternator main exciter is used with non-controlled rectifiers. The type AC2A model is similar to that of type AC1A except for the inclusion of exciter time constant compensation and exciter field current limiting elements. Reference: IEEE 421.5-2005, 6.2.
`ExcIEEEAC3A`	IEEE 421.5-2005 type AC3A model. The model represents the field-controlled alternator-rectifier excitation systems designated type AC3A. These excitation systems include an alternator main exciter with non-controlled rectifiers. The exciter employs self-excitation, and the voltage regulator power is derived from the exciter output voltage. Therefore, this system has an additional nonlinearity, simulated by the use of a multiplier whose inputs are the voltage regulator command signal, Va, and the exciter output voltage, Efd, times K_R. This model is applicable to excitation systems employing static voltage regulators. Reference: IEEE 421.5-2005, 6.3.
`ExcIEEEAC4A`	IEEE 421.5-2005 type AC4A model. The model represents type AC4A alternator-supplied controlled-rectifier excitation system which is quite different from the other types of AC systems. This high initial response excitation system utilizes a full thyristor bridge in the exciter output circuit. The voltage regulator controls the firing of the thyristor bridges. The exciter alternator uses an independent voltage regulator to control its output voltage to a constant value. These effects are not modelled; however, transient loading effects on the exciter alternator are included. Reference: IEEE 421.5-2005, 6.4.
`ExcIEEEAC5A`	IEEE 421.5-2005 type AC5A model. The model represents a simplified model for brushless excitation systems. The regulator is supplied from a source, such as a permanent magnet generator, which is not affected by system disturbances. Unlike other AC models, this model uses loaded rather than open circuit exciter saturation data in the same way as it is used for the DC models. Because the model has been widely implemented by the industry, it is sometimes used to represent other types of systems when either detailed data for them are not available or simplified models are required. Reference: IEEE 421.5-2005, 6.5.
`ExcIEEEAC6A`	IEEE 421.5-2005 type AC6A model. The model represents field-controlled alternator-rectifier excitation systems with system-supplied electronic voltage regulators. The maximum output of the regulator, V_R, is a function of terminal voltage, V_T. The field current limiter included in the original model AC6A remains in the 2005 update. Reference: IEEE 421.5-2005, 6.6.
`ExcIEEEAC7B`	IEEE 421.5-2005 type AC7B model. The model represents excitation systems which consist of an AC alternator with either stationary or rotating rectifiers to produce the DC field requirements. It is an upgrade to earlier AC excitation systems, which replace only the controls but retain the AC alternator and diode rectifier bridge. Reference: IEEE 421.5-2005, 6.7. Note, however, that in IEEE 421.5-2005, the [1 / sT_E] block is shown as [1 / (1 + sT_E)], which is incorrect.
`ExcIEEEAC8B`	IEEE 421.5-2005 type AC8B model. This model represents a PID voltage regulator with either a brushless exciter or DC exciter. The AVR in this model consists of PID control, with separate constants for the proportional (K_PR), integral (K_IR), and derivative (K_DR) gains. The representation of the brushless exciter (T_E, K_E, S_E, K_C, K_D) is similar to the model type AC2A. The type AC8B model can be used to represent static voltage regulators applied to brushless excitation systems. Digitally based voltage regulators feeding DC rotating main exciters can be represented with the AC type AC8B model with the parameters K_C and K_D set to 0. For thyristor power stages fed from the generator terminals, the limits V_RMAX and V_RMIN should be a function of terminal voltage: V_T x V_RMAXand V_T x V_RMIN. Reference: IEEE 421.5-2005, 6.8.
`ExcIEEEDC1A`	IEEE 421.5-2005 type DC1A model. This model represents field-controlled DC commutator exciters with continuously acting voltage regulators (especially the direct-acting rheostatic, rotating amplifier, and magnetic amplifier types). Because this model has been widely implemented by the industry, it is sometimes used to represent other types of systems when detailed data for them are not available or when a simplified model is required. Reference: IEEE 421.5-2005, 5.1.
`ExcIEEEDC2A`	IEEE 421.5-2005 type DC2A model. This model represents field-controlled DC commutator exciters with continuously acting voltage regulators having supplies obtained from the generator or auxiliary bus. It differs from the type DC1A model only in the voltage regulator output limits, which are now proportional to terminal voltage V_T. It is representative of solid-state replacements for various forms of older mechanical and rotating amplifier regulating equipment connected to DC commutator exciters. Reference: IEEE 421.5-2005, 5.2.
`ExcIEEEDC3A`	IEEE 421.5-2005 type DC3A model. This model represents older systems, in particular those DC commutator exciters with non-continuously acting regulators that were commonly used before the development of the continuously acting varieties. These systems respond at basically two different rates, depending upon the magnitude of voltage error. For small errors, adjustment is made periodically with a signal to a motor-operated rheostat. Larger errors cause resistors to be quickly shorted or inserted and a strong forcing signal applied to the exciter. Continuous motion of the motor-operated rheostat occurs for these larger error signals, even though it is bypassed by contactor action. Reference: IEEE 421.5-2005, 5.3.
`ExcIEEEDC4B`	IEEE 421.5-2005 type DC4B model. These excitation systems utilize a field-controlled DC commutator exciter with a continuously acting voltage regulator having supplies obtained from the generator or auxiliary bus. Reference: IEEE 421.5-2005, 5.4.
`ExcIEEEST1A`	IEEE 421.5-2005 type ST1A model. This model represents systems in which excitation power is supplied through a transformer from the generator terminals (or the unit’s auxiliary bus) and is regulated by a controlled rectifier. The maximum exciter voltage available from such systems is directly related to the generator terminal voltage. Reference: IEEE 421.5-2005, 7.1.
`ExcIEEEST2A`	IEEE 421.5-2005 type ST2A model. Some static systems use both current and voltage sources (generator terminal quantities) to comprise the power source. The regulator controls the exciter output through controlled saturation of the power transformer components. These compound-source rectifier excitation systems are designated type ST2A and are represented by ExcIEEEST2A. Reference: IEEE 421.5-2005, 7.2.
`ExcIEEEST3A`	IEEE 421.5-2005 type ST3A model. Some static systems utilize a field voltage control loop to linearize the exciter control characteristic. This also makes the output independent of supply source variations until supply limitations are reached. These systems utilize a variety of controlled-rectifier designs: full thyristor complements or hybrid bridges in either series or shunt configurations. The power source can consist of only a potential source, either fed from the machine terminals or from internal windings. Some designs can have compound power sources utilizing both machine potential and current. These power sources are represented as phasor combinations of machine terminal current and voltage and are accommodated by suitable parameters in model type ST3A which is represented by ExcIEEEST3A. Reference: IEEE 421.5-2005, 7.3.
`ExcIEEEST4B`	IEEE 421.5-2005 type ST4B model. This model is a variation of the type ST3A model, with a proportional plus integral (PI) regulator block replacing the lag-lead regulator characteristic that is in the ST3A model. Both potential and compound source rectifier excitation systems are modelled. The PI regulator blocks have non-windup limits that are represented. The voltage regulator of this model is typically implemented digitally. Reference: IEEE 421.5-2005, 7.4.
`ExcIEEEST5B`	IEEE 421.5-2005 type ST5B model. The type ST5B excitation system is a variation of the type ST1A model, with alternative overexcitation and underexcitation inputs and additional limits. The block diagram in the IEEE 421.5 standard has input signal Vc and does not indicate the summation point with Vref. The implementation of the ExcIEEEST5B shall consider summation point with Vref. Reference: IEEE 421.5-2005, 7.5.
`ExcIEEEST6B`	IEEE 421.5-2005 type ST6B model. This model consists of a PI voltage regulator with an inner loop field voltage regulator and pre-control. The field voltage regulator implements a proportional control. The pre-control and the delay in the feedback circuit increase the dynamic response. Reference: IEEE 421.5-2005, 7.6.
`ExcIEEEST7B`	IEEE 421.5-2005 type ST7B model. This model is representative of static potential-source excitation systems. In this system, the AVR consists of a PI voltage regulator. A phase lead-lag filter in series allows the introduction of a derivative function, typically used with brushless excitation systems. In that case, the regulator is of the PID type. In addition, the terminal voltage channel includes a phase lead-lag filter. The AVR includes the appropriate inputs on its reference for overexcitation limiter (OEL1), underexcitation limiter (UEL), stator current limiter (SCL), and current compensator (DROOP). All these limitations, when they work at voltage reference level, keep the PSS (VS signal from PSS) in operation. However, the UEL limitation can also be transferred to the high value (HV) gate acting on the output signal. In addition, the output signal passes through a low value (LV) gate for a ceiling overexcitation limiter (OEL2). Reference: IEEE 421.5-2005, 7.7.
`ExcitationSystemDynamics`	Excitation system function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.
`ExcitationSystemUserDefined`	Excitation system function block whose dynamic behaviour is described by a user-defined model.
`ExcNI`	Bus or solid fed SCR (silicon-controlled rectifier) bridge excitation system model type NI (NVE).
`ExcOEX3T`	Modified IEEE type ST1 excitation system with semi-continuous and acting terminal voltage limiter.
`ExcPIC`	Proportional/integral regulator excitation system. This model can be used to represent excitation systems with a proportional-integral (PI) voltage regulator controller.
`ExcREXS`	General purpose rotating excitation system. This model can be used to represent a wide range of excitation systems whose DC power source is an AC or DC generator. It encompasses IEEE type AC1, AC2, DC1, and DC2 excitation system models.
`ExcRQB`	Excitation system type RQB (four-loop regulator, r?gulateur quatre boucles, developed in France) primarily used in nuclear or thermal generating units. This excitation system shall be always used together with power system stabilizer type PssRQB.
`ExcSCRX`	Simple excitation system with generic characteristics typical of many excitation systems; intended for use where negative field current could be a problem.
`ExcSEXS`	Simplified excitation system.
`ExcSK`	Slovakian excitation system. UEL and secondary voltage control are included in this model. When this model is used, there cannot be a separate underexcitation limiter or VAr controller model.
`ExcST1A`	Modification of an old IEEE ST1A static excitation system without overexcitation limiter (OEL) and underexcitation limiter (UEL).
`ExcST2A`	Modified IEEE ST2A static excitation system with another lead-lag block added to match the model defined by WECC.
`ExcST3A`	Modified IEEE ST3A static excitation system with added speed multiplier.
`ExcST4B`	Modified IEEE ST4B static excitation system with maximum inner loop feedback gain Vgmax.
`ExcST6B`	Modified IEEE ST6B static excitation system with PID controller and optional inner feedback loop.

AcceptanceTest

Acceptance test for assets.

AccessPermit

A permit is sometimes needed to provide legal access to land or equipment. For example, local authority permission for road works.

AccountingUnit

Unit for accounting; use either 'energyUnit' or 'currencyUnit' to specify the unit for 'value'.

AccountMovement

Credit/debit movements for an account.

AccountNotification

Notifications for move-in, move-out, delinquencies, etc.

Accumulator

Accumulator represents an accumulated (counted) Measurement, e.g. an energy value.

AccumulatorLimit

Limit values for Accumulator measurements.

AccumulatorLimitSet

An AccumulatorLimitSet specifies a set of Limits that are associated with an Accumulator measurement.

AccumulatorReset

This command resets the counter value to zero.

AccumulatorValue

AccumulatorValue represents an accumulated (counted) MeasurementValue.

ACDCConverter

A unit with valves for three phases, together with unit control equipment, essential protective and switching devices, DC storage capacitors, phase reactors and auxiliaries, if any, used for conversion.

ACDCConverterDCTerminal

A DC electrical connection point at the AC/DC converter. The AC/DC converter is electrically connected also to the AC side. The AC connection is inherited from the AC conducting equipment in the same way as any other AC equipment. The AC/DC converter DC terminal is separate from generic DC terminal to restrict the connection with the AC side to AC/DC converter and so that no other DC conducting equipment can be connected to the AC side.

ACDCTerminal

An electrical connection point (AC or DC) to a piece of conducting equipment. Terminals are connected at physical connection points called connectivity nodes.

AceTariffType

The Area Control Error tariff type that is applied or used.

ACLineSegment

A wire or combination of wires, with consistent electrical characteristics, building a single electrical system, used to carry alternating current between points in the power system. For symmetrical, transposed three phase lines, it is sufficient to use attributes of the line segment, which describe impedances and admittances for the entire length of the segment. Additionally impedances can be computed by using length and associated per length impedances. The BaseVoltage at the two ends of ACLineSegments in a Line shall have the same BaseVoltage.nominalVoltage. However, boundary lines may have slightly different BaseVoltage.nominalVoltages and variation is allowed. Larger voltage difference in general requires use of an equivalent branch.

ACLineSegmentPhase

Represents a single wire of an alternating current line segment.

ActionRequest

Action request against an existing Trade.

ActivePowerLimit

Limit on active power flow.

ActivityRecord

Records activity for an entity at a point in time; activity may be for an event that has already occurred or for a planned activity.

AdjacentCASet

Groups Adjacent Control Areas.

AggregatedPnode

An aggregated pricing node is a specialized type of pricing node used to model items such as System Zone, Default Price Zone, Custom Price Zone, Control Area, Aggregated Generation, Aggregated Particpating Load, Aggregated Non-Participating Load, Trading Hub, Designated Control Area(DCA) Zone.

AggregateNode

An aggregated node can define a typed grouping further defined by the AnodeType enumeratuion. Types range from System Zone/Regions to Market Energy Regions to Aggregated Loads and Aggregated Generators.

AggregateScore

An aggregated indicative scoring by an analytic, which is based on other analytic scores, that can be used to characterize the health of or the risk associated with one or more assets.

Agreement

Formal agreement between two parties defining the terms and conditions for a set of services. The specifics of the services are, in turn, defined via one or more service agreements.

AirCompressor

Combustion turbine air compressor which is an integral part of a compressed air energy storage (CAES) plant.

AlertTypeList

A named list of alert types. Note: the name of the list is reflected in the .name attribute (inherited from IdentifiedObject).

AllocationResult

Models Market clearing results. Indicates market horizon, interval based. Used by a market quality system for billing and settlement purposes.

AllocationResultValues

Models Market clearing results in terms of price and MW values.

AlternateModel

n/a

AlternateModelGroup

n/a

AltGeneratingUnitMeas

A prioritized measurement to be used for the generating unit in the control area specification.

AltTieMeas

A prioritized measurement to be used for the tie flow as part of the control area specification.

Analog

Analog represents an analog Measurement.

AnalogControl

An analog control used for supervisory control.

AnalogLimit

Limit values for Analog measurements.

AnalogLimitSet

An AnalogLimitSet specifies a set of Limits that are associated with an Analog measurement.

AnalogMeasurementValueQuality

Measurement quality flags for Analog Values.

AnalogValue

AnalogValue represents an analog MeasurementValue.

Analytic

An algorithm or calculation for making an assessment about an asset or asset grouping for lifecycle decision making.

AnalyticScore

An indicative scoring by an analytic that can be used to characterize the health of or the risk associated with one or more assets. The analytic score reflects the results of an execution of an analytic against an asset or group of assets.

AncillaryServiceClearing

Model of results of market clearing with respect to Ancillary Service products.

AnnotatedProjectDependency

n/a

ApparentPowerLimit

Apparent power limit.

Appointment

Meeting time and location.

Approver

Person who accepted/signed or rejected the document.

AreaLoadBid

AreaLoadBid is not submitted by a market participant into the Markets. Instead, it is simply an aggregation of all LoadBids contained wtihin a specific SubControlArea. This entity should inherit from Bid for representation of the timeframe (startTime, stopTime) and the market type.

AreaLoadCurve

Area load curve definition.

AreaReserveSpec

The control area's reserve specification.

ASRequirements

Models Ancillary Service Requirements. Describes interval for which the requirement is applicable.

AssemblyDescription

A description for how to assemble model parts for a specific purpose.

AssemblyManifest

A collection of model parts when combined form a case or part of a case.

Asset

Tangible resource of the utility, including power system equipment, various end devices, cabinets, buildings, etc. For electrical network equipment, the role of the asset is defined through PowerSystemResource and its subclasses, defined mainly in the Wires model (refer to IEC61970-301 and model package IEC61970::Wires). Asset description places emphasis on the physical characteristics of the equipment fulfilling that role.

AssetAnalog

Definition of type of analog useful in asset domain.

AssetContainer

Asset that is aggregation of other assets such as conductors, transformers, switchgear, land, fences, buildings, equipment, vehicles, etc.

AssetDeployment

Deployment of asset deployment in a power system resource role.

AssetDiscrete

Definition of type of discrete useful in asset domain.

AssetFunction

Function performed by an asset.

AssetGroup

A grouping of assets created for a purpose such as fleet analytics, inventory or compliance management.

AssetHealthEvent

An asset health-related event that is created by an analytic. The event is a record of a change in asset health.

AssetInfo

Set of attributes of an asset, representing typical datasheet information of a physical device that can be instantiated and shared in different data exchange contexts: - as attributes of an asset instance (installed or in stock) - as attributes of an asset model (product by a manufacturer) - as attributes of a type asset (generic type of an asset as used in designs/extension planning).

AssetLocationHazard

Potential hazard related to the location of an asset. Examples are trees growing under overhead power lines, a park being located by a substation (i.e., children climb fence to recover a ball), a lake near an overhead distribution line (fishing pole/line contacting power lines), dangerous neighbour, etc.

AssetModelCatalogue

Catalogue of available types of products and materials that are used to build or install, maintain or operate an Asset. Each catalogue item is for a specific product (AssetModel) available from a specific supplier.

AssetModelCatalogueItem

Provides pricing and other relevant information about a specific manufacturer's product (i.e., AssetModel), and its price from a given supplier. A single AssetModel may be availble from multiple suppliers. Note that manufacturer and supplier are both types of organisation, which the association is inherited from Document.

AssetOrganisationRole

Role an organisation plays with respect to asset.

AssetOwner

Owner of the asset.

AssetPropertyCurve

An Asset Property that is described through curves rather than as a data point. The relationship is to be defined between an independent variable (X-axis) and one or two dependent variables (Y1-axis and Y2-axis).

AssetStringMeasurement

Definition of type of string measurement useful in asset domain.

AssetTemperaturePressureAnalog

Temperature or pressure type of asset analog.

AssetTestLab

Test lab that performs various types of testing related to assets.

AssetTestSampleTaker

Identity of person/organization that took sample.

AssetUser

Organisation that is a user of the asset.

Assignment

An assignment is given to an ErpPerson, Crew, Organisation, Equipment Item, Tool, etc. and may be used to perform Work, WorkTasks, Procedures, etc. TimeSchedules may be set up directly for Assignments or indirectly via the associated WorkTask. Note that these associations are all inherited through the recursive relationship on Document.

ASTMStandard

Standard published by ASTM (ASTM International).

AsynchronousMachine

A rotating machine whose shaft rotates asynchronously with the electrical field. Also known as an induction machine with no external connection to the rotor windings, e.g. squirrel-cage induction machine.

AsynchronousMachineDynamics

Asynchronous machine whose behaviour is described by reference to a standard model expressed in either time constant reactance form or equivalent circuit form or by definition of a user-defined model. Parameter details:

Asynchronous machine parameters such as Xl, Xs, etc. are actually used as inductances in the model, but are commonly referred to as reactances since, at nominal frequency, the PU values are the same. However, some references use the symbol L instead of X.

AsynchronousMachineEquivalentCircuit

The electrical equations of all variations of the asynchronous model are based on the AsynchronousEquivalentCircuit diagram for the direct- and quadrature- axes, with two equivalent rotor windings in each axis. Equations for conversion between equivalent circuit and time constant reactance forms: Xs = Xm + Xl X' = Xl + Xm x Xlr1 / (Xm + Xlr1) X'' = Xl + Xm x Xlr1 x Xlr2 / (Xm x Xlr1 + Xm x Xlr2 + Xlr1 x Xlr2) T'o = (Xm + Xlr1) / (omega₀ x Rr1) T''o = (Xm x Xlr1 + Xm x Xlr2 + Xlr1 x Xlr2) / (omega₀ x Rr2 x (Xm + Xlr1) Same equations using CIM attributes from AsynchronousMachineTimeConstantReactance class on left of "=" and AsynchronousMachineEquivalentCircuit class on right (except as noted): xs = xm + RotatingMachineDynamics.statorLeakageReactance xp = RotatingMachineDynamics.statorLeakageReactance + xm x xlr1 / (xm + xlr1) xpp = RotatingMachineDynamics.statorLeakageReactance + xm x xlr1 x xlr2 / (xm x xlr1 + xm x xlr2 + xlr1 x xlr2) tpo = (xm + xlr1) / (2 x pi x nominal frequency x rr1) tppo = (xm x xlr1 + xm x xlr2 + xlr1 x xlr2) / (2 x pi x nominal frequency x rr2 x (xm + xlr1).

AsynchronousMachineTimeConstantReactance

Parameter details:

If X'' = X', a single cage (one equivalent rotor winding per axis) is modelled.
The “p” in the attribute names is a substitution for a “prime” in the usual parameter notation, e.g. tpo refers to T'o.

The parameters used for models expressed in time constant reactance form include: - RotatingMachine.ratedS (MVAbase); - RotatingMachineDynamics.damping (D); - RotatingMachineDynamics.inertia (H); - RotatingMachineDynamics.saturationFactor (S1); - RotatingMachineDynamics.saturationFactor120 (S12); - RotatingMachineDynamics.statorLeakageReactance (Xl); - RotatingMachineDynamics.statorResistance (Rs); - .xs (Xs); - .xp (X'); - .xpp (X''); - .tpo (T'o); - .tppo (T''o).

AsynchronousMachineUserDefined

Asynchronous machine whose dynamic behaviour is described by a user-defined model.

AtmosphericAnalog

Analog (float) measuring an atmospheric condition.

AtmosphericPhenomenon

An atmospheric phenomenon with a base and altitude providing the vertical coverage (combined with the Location to provide three dimensional space).

AttributeInstanceComponent

A class used to provide information about an attribute.

AttributeProperty

Property for a particular attribute that contains name and value.

Auction

A class providing the identification and type of an auction.

Author

Person who created document or activity record.

AuxiliaryAccount

Variable and dynamic part of auxiliary agreement, generally representing the current state of the account related to the outstanding balance defined in auxiliary agreement.

AuxiliaryAgreement

An ad-hoc auxiliary account agreement associated with a customer agreement, not part of the customer's account, but typically subject to formal agreement between customer and supplier (utility). Typically this is used to collect revenue owed by the customer for other services or arrears accrued with the utility for other services. It is typically linked to a prepaid token purchase transaction, thus forcing the customer to make a payment towards settlement of the auxiliary account balance whenever the customer needs to purchase a prepaid token for electricity. The present status of the auxiliary agreement can be defined in the context of the utility's business rules, for example: enabled, disabled, pending, over recovered, under recovered, written off, etc.

AuxiliaryCost

Models Market clearing results for Auxiliary costs.

AuxiliaryEquipment

AuxiliaryEquipment describe equipment that is not performing any primary functions but support for the equipment performing the primary function. AuxiliaryEquipment is attached to primary equipment via an association with Terminal.

AuxiliaryObject

Models Auxiliary Values.

AuxiliaryValues

Models Auxiliary Values.

AvailablityPlan

The collection of all the availability schedules for a given time range. Only one availability plan shall be valid for the same period.

Bank

Organisation that is a commercial bank, agency, or other institution that offers a similar service.

BankAccount

Bank account.

BankAccountDetail

Details of a bank account.

BaseCaseConstraintLimit

Possibly time-varying max MW or MVA and optionally Min MW limit or MVA limit (Y1 and Y2, respectively) assigned to a contingency analysis base case. Use CurveSchedule XAxisUnits to specify MW or MVA. To be used only if the BaseCaseConstraintLimit differs from the DefaultConstraintLimit.

BaseFrequency

The BaseFrequency class describes a base frequency for a power system network. In case of multiple power networks with different frequencies, e.g. 50 Hz or 60 Hz each network will have its own base frequency class. Hence it is assumed that power system objects having different base frequencies appear in separate documents where each document has a single base frequency instance.

BasePower

The BasePower class defines the base power used in the per unit calculations.

BaseReading

Common representation for reading values. Note that a reading value may have multiple qualities, as produced by various systems ('ReadingQuality.source').

BaseVoltage

Defines a system base voltage which is referenced.

BaseWork

Common representation for work and work tasks.

BasicIntervalSchedule

Schedule of values at points in time.

BatteryUnit

An electrochemical energy storage device.

Bay

A collection of power system resources (within a given substation) including conducting equipment, protection relays, measurements, and telemetry. A bay typically represents a physical grouping related to modularization of equipment.

Bid

Represents both bids to purchase and offers to sell energy or ancillary services in an RTO-sponsored market.

BidDistributionFactor

This class allows SC to input different time intervals for distribution factors.

BidError

This class represent the error information for a bid that is detected during bid validation.

BidHourlyProductSchedule

Containment for bid parameters that are dependent on a market product type.

BidHourlySchedule

Containment for bid hourly parameters that are not product dependent.

BidPriceCap

This class represent the bid price cap.

BidPriceCurve

Relationship between unit operating price in $/hour (Y-axis) and unit output in MW (X-axis).

BidPriceSchedule

Defines bid schedules to allow a product bid to use specified bid price curves for different time intervals.

BidSelfSched

Defines self schedule values to be used for specified time intervals.

BidSet

As set of mutually exclusive bids for which a maximum of one may be scheduled. Of these generating bids, only one generating bid can be scheduled at a time.

BidTimeSeries

The formal specification of specific characteristics related to a bid.

BilateralExchangeActor

BilateralExchangeActor describes an actor that provides ICCP data, consumes ICCP data or both. The ICCP data provider lists the data it makes available to an ICCP data consumer. This data is described by ProvidedBilateralPoints. The relation between an ICCP data provider and a consumer is established by a BilateralExchangeAgreement. It is up to the ICCP data consumer to select what ProvidedBilateralPoints to use. The selection made is not described in this information model.

BilateralExchangeAgreement

This is the representation of the information exchange agreement between peers.

BilateralTransaction

Bilateral transaction

BillDeterminant

Models various charges to support billing and settlement.

BlockDispatchComponent

n/a

BlockDispatchInstruction

n/a

BlockDispatchOrder

n/a

BlockingFunction

n/a

BranchEndFlow

Dynamic flows and ratings associated with a branch end.

BranchGroup

A group of branch terminals whose directed flow summation is to be monitored. A branch group need not form a cutset of the network.

BranchGroupTerminal

A specific directed terminal flow for a branch group.

Breaker

A mechanical switching device capable of making, carrying, and breaking currents under normal circuit conditions and also making, carrying for a specified time, and breaking currents under specified abnormal circuit conditions e.g. those of short circuit.

BreakerInfo

Properties of breaker assets.

BusbarSection

A conductor, or group of conductors, with negligible impedance, that serve to connect other conducting equipment within a single substation. Voltage measurements are typically obtained from voltage transformers that are connected to busbar sections. A bus bar section may have many physical terminals but for analysis is modelled with exactly one logical terminal.

BusbarSectionInfo

Busbar section data.

Bushing

Bushing asset.

BushingInfo

Bushing datasheet information.

BushingInsulationPF

Bushing insulation power factor condition as a result of a test. Typical status values are: Acceptable, Minor Deterioration or Moisture Absorption, Major Deterioration or Moisture Absorption, Failed.

BusinessCase

Business justification for capital expenditures, usually addressing operations and maintenance costs as well.

BusinessPlan

A BusinessPlan is an organized sequence of predetermined actions required to complete a future organizational objective. It is a type of document that typically references a schedule, physical and/or logical resources (assets and/or PowerSystemResources), locations, etc.

BusinessRole

A business role that this organisation plays. A single organisation typically performs many functions, each one described as a role.

BusNameMarker

Used to apply user standard names to TopologicalNodes. Associated with one or more terminals that are normally connected with the bus name. The associated terminals are normally connected by non-retained switches. For a ring bus station configuration, all BusbarSection terminals in the ring are typically associated. For a breaker and a half scheme, both BusbarSections would normally be associated. For a ring bus, all BusbarSections would normally be associated. For a "straight" busbar configuration, normally only the main terminal at the BusbarSection would be associated.

BWRSteamSupply

Boiling water reactor used as a steam supply to a steam turbine.

Cabinet

Enclosure that offers protection to the equipment it contains and/or safety to people/animals outside it.

CableInfo

Cable data.

CAESPlant

Compressed air energy storage plant.

CalculationMethodHierarchy

The hierarchy of calculation methods used to derive this measurement. .

CalculationMethodOrder

The order of this calculation method in a hierarchy of calculation methods.

Capability

Capabilities of a crew.

Card

Documentation of the tender when it is a type of card (credit, debit, etc).

Cashier

The operator of the point of sale for the duration of CashierShift. Cashier is under the exclusive management control of Vendor.

CashierShift

The operating shift for a cashier, during which the cashier may transact against the cashier shift, subject to vendor shift being open.

CatalogAssetType

a Assets that may be used for planning, work or design purposes.

CCAinverter

n/a

CCArectifierControl

n/a

ChangeSet

Describes a set of changes that can be applied in different situations. A given registered target object MRID may only be referenced once by the contained change set members.

ChangeSetMember

A CRUD-style data object.

Channel

A single path for the collection or reporting of register values over a period of time. For example, a register which measures forward energy can have two channels, one providing bulk quantity readings and the other providing interval readings of a fixed interval size.

Charge

A charge element associated with other entities such as tariff structures, auxiliary agreements or other charge elements. The total charge amount applicable to this instance of charge is the sum of fixed and variable portion.

ChargeComponent

A Charge Component is a list of configurable charge quality items to feed into settlement calculation and/or bill determinants.

ChargeGroup

Charge Group is the grouping of Charge Types for settlement invoicing purpose. Examples such as Ancillary Services, Interests, etc.

ChargeProfile

A type of profile for financial charges.

ChargeProfileData

Model of various charges associated with an energy profile to support billing and settlement.

ChargeType

Charge Type is the basic level configuration for settlement to process specific charges for invoicing purpose. Examples such as: Day Ahead Spinning Reserve Default Invoice Interest Charge, etc.

Cheque

The actual tender when it is a type of cheque.

CIGREStandard

Standard published by CIGRE (Council on Large Electric Systems).

Circuit

n/a

Clamp

A Clamp is a galvanic connection at a line segment where other equipment is connected. A Clamp does not cut the line segment. A Clamp is ConductingEquipment and has one Terminal with an associated ConnectivityNode. Any other ConductingEquipment can be connected to the Clamp ConnectivityNode.

ClampAction

Action on Clamp as a switching step

ClassificationCondition

A classification condition used to define preconditions that must be met by a phenomena classification.

ClearanceAction

Action on clearance document as a switching step.

ClearanceDocument

Safety document used to authorise work on conducting equipment in the field. Tagged equipment is not allowed to be operated.

CloudCondition

A classified cloud phenomenon with a type.

CnodeDistributionFactor

Participation factors per Cnode. Used to calculate "participation" of Cnode in an AggregateNode. Each Cnode associated to an AggregateNode would be assigned a participation factor for its participation within the AggregateNode.

CogenerationPlant

A set of thermal generating units for the production of electrical energy and process steam (usually from the output of the steam turbines). The steam sendout is typically used for industrial purposes or for municipal heating and cooling.

CombinedCycleConfiguration

Configuration options for combined cycle units. For example, a Combined Cycle with (CT1, CT2, ST1) will have (CT1, ST1) and (CT2, ST1) configurations as part of(1CT + 1STlogicalconfiguration).

CombinedCycleConfigurationMember

Configuration Member of CCP Configuration.

CombinedCycleLogicalConfiguration

Logical Configuration of a Combined Cycle plant.

Operating Combined Cycle Plant (CCP) configurations are represented as Logical CCP Resources. Logical representation shall be used for Market applications to optimize and control Market Operations. Logical representation is also necessary for controlling the number of CCP configurations and to temper performance issues that may otherwise occur.

For example,(2CT configuration),(1CT + 1ST configuration) are examples of logical configuration, without specifying the specific CT and ST participating in the configuration.

CombinedCyclePlant

A set of combustion turbines and steam turbines where the exhaust heat from the combustion turbines is recovered to make steam for the steam turbines, resulting in greater overall plant efficiency.

CombinedCycleTransitionState

Defines the available from and to Transition States for the Combine Cycle Configurations.

CombustionTurbine

A prime mover that is typically fuelled by gas or light oil.

ComFunction

Communication function of communication equipment or a device such as a meter.

Command

A Command is a discrete control used for supervisory control.

ComMedia

Communication media such as fibre optic cable, power-line, telephone, etc.

CommitmentClearing

Models results of market clearing which call for commitment of units.

Commitments

Provides the necessary information (on a resource basis) to capture the Startup/Shutdown commitment results. This information is relevant to all markets.

CommodityDefinition

Commodities in the context of IEC 62325 are MarketProducts (energy, regulation, reserve, etc) traded at a specific location, which in this case is a Pnode (either a specific pricing node or a pricing area or zone defined as a collection of pricing nodes). The CommodityDefinition is a container for these two parameters, plus the unit of measure and the currency in which the Commodity is traded. Each CommodityDefinition should be relatively static; defined once and rarely changed.

CommodityPrice

The CommodityPrice class is used to define the price of a commodity during a given time interval. The interval may be long, e.g. a year, or very short, e.g. 5 minutes. There will be many instances of the CommodityPrice class for each instance of the CommodityDefinition to which it is associated. Note that there may be more than once price associated with a given interval and these variances are described by the association (or associations) with the PriceDescriptor class.

ComModule

An asset having communications capabilities that can be paired with a meter or other end device to provide the device with communication ability, through associated communication function. An end device that has communications capabilities through embedded hardware can use that function directly (without the communication module), or combine embedded communication function with additional communication functions provided through an external communication module (e.g. zigbee).

CommunicationLink

The connection to remote units is through one or more communication links. Reduntant links may exist. The CommunicationLink class inherits PowerSystemResource. The intention is to allow CommunicationLinks to have Measurements. These Measurements can be used to model link status as operational, out of service, unit failure etc.

CompatibleUnit

A pre-planned job model containing labor, material, and accounting requirements for standardized job planning.

CompleteModelToBeDeleted

A complete model can be used in applications to perform meaningful calculations, e.g. a study case in offline tools or a real time model in a SCADA/EMS.

ComplianceEvent

Compliance events are used for reporting regulatory or contract compliance issues and/or variances. These might be created as a consequence of local business processes and associated rules. It is anticipated that this class will be customised extensively to meet local implementation needs. Use inherited 'type' to indicate that, for example, expected performance will not be met or reported as mandated.

CompositeSwitch

A model of a set of individual Switches normally enclosed within the same cabinet and possibly with interlocks that restrict the combination of switch positions. These are typically found in medium voltage distribution networks. A CompositeSwitch could represent a Ring-Main-Unit (RMU), or pad-mounted switchgear, with primitive internal devices such as an internal bus-bar plus 3 or 4 internal switches each of which may individually be open or closed. A CompositeSwitch and a set of contained Switches can also be used to represent a multi-position switch e.g. a switch that can connect a circuit to Ground, Open or Busbar.

CompositeSwitchInfo

Properties of a composite switch.

ConcentricNeutralCableInfo

Concentric neutral cable data.

ConditionFactor

This is to specify the various condition factors for a design that may alter the cost estimate or the allocation.

ConductingEquipment

The parts of the AC power system that are designed to carry current or that are conductively connected through terminals.

Conductor

Combination of conducting material with consistent electrical characteristics, building a single electrical system, used to carry current between points in the power system.

ConfigurationEvent

Used to report details on creation, change or deletion of an entity or its configuration.

ConformLoad

ConformLoad represent loads that follow a daily load change pattern where the pattern can be used to scale the load with a system load.

ConformLoadGroup

A group of loads conforming to an allocation pattern.

ConformLoadSchedule

A curve of load versus time (X-axis) showing the active power values (Y1-axis) and reactive power (Y2-axis) for each unit of the period covered. This curve represents a typical pattern of load over the time period for a given day type and season.

CongestionArea

Designated Congestion Area Definition (DCA).

CongestionRevenueRight

Congestion Revenue Rights (CRR) class that is inherited from a Document class.

A CRR is a financial concept that is used to hedge congestion charges.

The CRR is usually settled based on the Locational Marginal Prices (LMPs) that are calculated in the day-ahead market. These LMPs are determined by the Day-ahead resource schedules/bids. CRRs will not hedge against marginal losses. If the congestion component of LMP at the sink is greater than at the source, then the CRR owner is entitled to receive a portion of congestion revenues. If the congestion component at the sink is less than at the source, then an obligation-type CRR owner will be charged, but an option-type CRR owner will not.

ConnectDisconnectFunction

A function that will disconnect and reconnect the customer's load under defined conditions.

ConnectivityNode

Connectivity nodes are points where terminals of AC conducting equipment are connected together with zero impedance.

ConnectivityNodeContainer

A base class for all objects that may contain connectivity nodes or topological nodes.

Connector

A conductor, or group of conductors, with negligible impedance, that serve to connect other conducting equipment within a single substation and are modelled with a single logical terminal.

ConstraintClearing

Groups all items associated with Binding Constraints and Constraint Violations per interval and market.

ConstraintDuration

Duration constraint to activate, to put in operation, to deactivate, ... a given event.

ConstraintResults

Provides the Market results for the constraint processing for either the DAM or RTM. The data includes the constraint type (binding or violated), the solved value for the constraint, and the associated shadow price.

ConstraintTerm

A constraint term is one element of a linear constraint.

ConsumptionTariffInterval

One of a sequence of intervals defined in terms of consumption quantity of a service such as electricity, water, gas, etc. It is typically used in association with TariffProfile to define the steps or blocks in a step tariff structure, where startValue simultaneously defines the entry value of this step and the closing value of the previous step. Where consumption is >= startValue it falls within this interval and where consumption is < startValue it falls within the previous interval.

Contingency

An event threatening system reliability, consisting of one or more contingency elements.

ContingencyConstraintLimit

Possibly time-varying max MW or MVA and optionally Min MW limit or MVA limit (Y1 and Y2, respectively) assigned to a constraint for a specific contingency. Use CurveSchedule XAxisUnits to specify MW or MVA.

ContingencyElement

An element of a system event to be studied by contingency analysis, representing a change in status of a single piece of equipment.

ContingencyEquipment

Equipment whose in service status is to change, such as a power transformer or AC line segment.

ContractDistributionFactor

Distribution among resources at the sink point or source point.

ContractorItem

Contractor information for work task.

ContractRight

Provides definition of Transmission Ownership Right and Existing Transmission Contract identifiers for use by SCUC. RMR contract hosting: Startup lead time, Contract Service Limits, Max Service Hours, Max MWhs, Max Start-ups, Ramp Rate, Max Net Dependable Capacity, Min Capacity and Unit Substitution for DAM/RTM to retrieve.

Control

Control is used for supervisory/device control. It represents control outputs that are used to change the state in a process, e.g. close or open breaker, a set point value or a raise lower command.

ControlAction

Control executed as a switching step.

ControlArea

A control area is a grouping of generating units and/or loads and a cutset of tie lines (as terminals) which may be used for a variety of purposes including automatic generation control, power flow solution area interchange control specification, and input to load forecasting. All generation and load within the area defined by the terminals on the border are considered in the area interchange control. Note that any number of overlapping control area specifications can be superimposed on the physical model. The following general principles apply to ControlArea: 1. The control area orientation for net interchange is positive for an import, negative for an export. 2. The control area net interchange is determined by summing flows in Terminals. The Terminals are identified by creating a set of TieFlow objects associated with a ControlArea object. Each TieFlow object identifies one Terminal. 3. In a single network model, a tie between two control areas must be modelled in both control area specifications, such that the two representations of the tie flow sum to zero. 4. The normal orientation of Terminal flow is positive for flow into the conducting equipment that owns the Terminal. (i.e. flow from a bus into a device is positive.) However, the orientation of each flow in the control area specification must align with the control area convention, i.e. import is positive. If the orientation of the Terminal flow referenced by a TieFlow is positive into the control area, then this is confirmed by setting TieFlow.positiveFlowIn flag TRUE. If not, the orientation must be reversed by setting the TieFlow.positiveFlowIn flag FALSE.

ControlAreaDesignation

Indicates Control Area associated with self-schedule.

ControlAreaGeneratingUnit

A control area generating unit. This class is needed so that alternate control area definitions may include the same generating unit. It should be noted that only one instance within a control area should reference a specific generating unit.

ControlAreaOperator

Operates the Control Area. Approves and implements energy transactions. Verifies both Inter-Control Area and Intra-Control Area transactions for the power system before granting approval (and implementing) the transactions.

ControlAreaSolutionData

State Estimator Solution Pool Interchange and Losses.

ControlledAppliance

Appliance controlled with a PAN device control.

CoolingPowerRating

There are often stages of power which are associated with stages of cooling. For instance, a transformer may be rated 121kV on the primary, 15kV on the secondary and 4kV on the tertiary winding. These are voltage ratings and the power ratings are generally the same for all three windings and independent of the voltage ratings, there are instances where the tertiary may have a lower power rating. For example, for three stages, the power rating may be 15/20/25 MVA and the cooling is OA/FA/FOA. The 15 MVA rating goes with the OA cooling (Oil and Air cooling). This is called the self cooled rating as there are no external cooling enhancements. The 20 MVA rating goes with the FA cooling (Forced Air cooling), this means that when the fans are running and thus enhancing the cooling characteristics, the transformer can operate at a power level of 20 MVA. The 25 MVA rating goes with the FOA cooling (Forced Oil and Air cooling), this means that when the fans and pumps are running and thus enhancing the cooling characteristics even more than before, the transformer can operate at a power level of 25 MVA. This 15/20/25 MVA does not state how the power is split between the various windings. It may be 25 MVA input on the primary, 25 MVA output on the secondary and 0 MVA output on the tertiary. It may also operate at 25 MVA input on the primary, 17 MVA output on the secondary and 8 MVA output on the tertiary.

CoordinateSystem

Coordinate reference system.

CostType

A categorization for resources, often costs, in accounting transactions. Examples include: material components, building in service, coal sales, overhead, etc.

Craft

Craft of a person or a crew. Examples include overhead electric, underground electric, high pressure gas, etc. This ensures necessary knowledge and skills before being allowed to perform certain types of work.

Crew

Group of people with specific skills, tools, and vehicles.

CrewMember

Member of a crew.

CrewType

Custom description of the type of crew. This may be used to determine the type of work the crew can be assigned to. Examples include repair, tree trimming, switching, etc.

CrossCompoundTurbineGovernorDynamics

Turbine-governor cross-compound function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

CRRMarket

Model that describes the Congestion Revenue Rights Auction Market.

CRROrgRole

Identifies a way in which an organisation may participate with a defined Congestion Revenue Right (CRR).

CRRSegment

CRRSegment represents a segment of a CRR in a particular time frame.

The segment class contains amount, clearing price, start date and time, end date and time.

CSCDynamics

CSC function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

CsConverter

DC side of the current source converter (CSC). The firing angle controls the dc voltage at the converter, both for rectifier and inverter. The difference between the dc voltages of the rectifier and inverter determines the dc current. The extinction angle is used to limit the dc voltage at the inverter, if needed, and is not used in active power control. The firing angle, transformer tap position and number of connected filters are the primary means to control a current source dc line. Higher level controls are built on top, e.g. dc voltage, dc current and active power. From a steady state perspective it is sufficient to specify the wanted active power transfer (ACDCConverter.targetPpcc) and the control functions will set the dc voltage, dc current, firing angle, transformer tap position and number of connected filters to meet this. Therefore attributes targetAlpha and targetGamma are not applicable in this case. The reactive power consumed by the converter is a function of the firing angle, transformer tap position and number of connected filter, which can be approximated with half of the active power. The losses is a function of the dc voltage and dc current. The attributes minAlpha and maxAlpha define the range of firing angles for rectifier operation between which no discrete tap changer action takes place. The range is typically 10-18 degrees. The attributes minGamma and maxGamma define the range of extinction angles for inverter operation between which no discrete tap changer action takes place. The range is typically 17-20 degrees.

CSCtype1

n/a

CSCUserDefined

Current source converter (CSC) function block whose dynamic behaviour is described by a user-defined model.

CTTempActivePowerCurve

Relationship between the combustion turbine's power output rating in gross active power (X-axis) and the ambient air temperature (Y-axis).

CUAllowableAction

Allowed actions: Install, Remove, Transfer, Abandon, etc.

CUContractorItem

Compatible unit contractor item.

CUGroup

A Compatible Unit Group identifies a set of compatible units which may be jointly utilized for estimating and designating jobs.

CULaborCode

Labor code associated with various compatible unit labor items.

CULaborItem

Compatible unit labor item.

CUMaterialItem

Compatible unit of a consumable supply item. For example, nuts, bolts, brackets, glue, etc.

CurrentEmergencyScheduledInterchange

Control area emergency schedules

CurrentLimit

Operational limit on current.

CurrentRelay

A device that checks current flow values in any direction or designated direction.

CurrentScheduledInterchange

Control area current net tie (scheduled interchange) sent to real time dispatch.

CurrentState

n/a

CurrentTransformer

Instrument transformer used to measure electrical qualities of the circuit that is being protected and/or monitored. Typically used as current transducer for the purpose of metering or protection. A typical secondary current rating would be 5A.

CurrentTransformerInfo

Properties of current transformer asset.

CurtailmentProfile

Curtailing entity must be providing at least one service to the EnergyTransaction. The CurtailmentProfile must be completely contained within the EnergyProfile timeframe for this EnergyTransaction.

Curve

A multi-purpose curve or functional relationship between an independent variable (X-axis) and dependent (Y-axis) variables.

CurveData

Multi-purpose data points for defining a curve. The use of this generic class is discouraged if a more specific class can be used to specify the X and Y axis values along with their specific data types.

Customer

Organisation receiving services from service supplier.

CustomerAccount

Assignment of a group of products and services purchased by the customer through a customer agreement, used as a mechanism for customer billing and payment. It contains common information from the various types of customer agreements to create billings (invoices) for a customer and receive payment.

CustomerAgreement

Agreement between the customer and the service supplier to pay for service at a specific service location. It records certain billing information about the type of service provided at the service location and is used during charge creation to determine the type of service.

CustomerBillingInfo

The creation of the monthly customer billing statements is the method employed to notify Customers of charges, adjustments and credits applied to their account for Services and Products. The actuall billing occurs through an ErpInvoice. The CustomerBillingInfo includes information from the payment, collection, meter reading, installed meter, service, site, customer, customer account, customer agreement, services and pricing subject areas. Each component price shows up as a separate line item on the ErpInvoice. The Customer Billing Statement may include collection and account messages, marketing/civic event messages and bill inserts. One Customer Billing Statement is produced for all Agreements under a CustomerAccount per billing cycle date defined in 'CustomerAccount.billingCycle'. The history of CustomerBillingInfo, Invoices and Payments is to be maintained in associated ActivityRecords.

CustomerConsumer

The energy buyer in the energy marketplace.

CustomerNotification

Conditions for notifying the customer about the changes in the status of their service (e.g., outage restore, estimated restoration time, tariff or service level change, etc.)

Cut

A cut separates a line segment into two parts. The cut appears as a switch inserted between these two parts and connects them together. As the cut is normally open there is no galvanic connection between the two line segment parts. But it is possible to close the cut to get galvanic connection. The cut terminals are oriented towards the line segment terminals with the same sequence number. Hence the cut terminal with sequence number equal to 1 is oriented to the line segment's terminal with sequence number equal to 1. The cut terminals also act as connection points for jumpers and other equipment, e.g. a mobile generator. To enable this, connectivity nodes are placed at the cut terminals. Once the connectivity nodes are in place any conducting equipment can be connected at them.

CutAction

Action on cut as a switching step.

CUWorkEquipmentItem

Compatible unit for various types of WorkEquipmentAssets, including vehicles.

Cyclone

A cyclone (or tropical cyclone), a rapidly-rotating storm system characterized by a low-pressure center, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain.

DataSet

A generic container of a version of instance data. The MRID can be used in an audit trail, not in reusable script intended to work with new versions of data. A dataset could be serialized multiple times and in multiple technologies, yet retain the same identity.

DatasetArg

A model operation argument referencing a dataset instance.

DatasetArgDescription

n/a

DateAndOrTime

The date and/or the time.

DateInterval

Interval between two dates.

DateTimeInterval

Interval between two date and time points, where the interval includes the start time but excludes end time.

DayType

Group of similar days. For example it could be used to represent weekdays, weekend, or holidays.

DCBaseTerminal

An electrical connection point at a piece of DC conducting equipment. DC terminals are connected at one physical DC node that may have multiple DC terminals connected. A DC node is similar to an AC connectivity node. The model requires that DC connections are distinct from AC connections.

DCBreaker

A breaker within a DC system.

DCBusbar

A busbar within a DC system.

DCChopper

Low resistance equipment used in the internal DC circuit to balance voltages. It has typically positive and negative pole terminals and a ground.

DCConductingEquipment

The parts of the DC power system that are designed to carry current or that are conductively connected through DC terminals.

DCConverterUnit

Indivisible operative unit comprising all equipment between the point of common coupling on the AC side and the point of common coupling – DC side, essentially one or more converters, together with one or more converter transformers, converter control equipment, essential protective and switching devices and auxiliaries, if any, used for conversion.

DCDisconnector

A disconnector within a DC system.

DCEquipmentContainer

A modelling construct to provide a root class for containment of DC as well as AC equipment. The class differ from the EquipmentContaner for AC in that it may also contain DCNode-s. Hence it can contain both AC and DC equipment.

DCGround

A ground within a DC system.

DCLine

Overhead lines and/or cables connecting two or more HVDC substations.

DCLineSegment

A wire or combination of wires not insulated from one another, with consistent electrical characteristics, used to carry direct current between points in the DC region of the power system.

DCNode

DC nodes are points where terminals of DC conducting equipment are connected together with zero impedance.

DCSeriesDevice

A series device within the DC system, typically a reactor used for filtering or smoothing. Needed for transient and short circuit studies.

DCShunt

A shunt device within the DC system, typically used for filtering. Needed for transient and short circuit studies.

DCSwitch

A switch within the DC system.

DCTerminal

An electrical connection point to generic DC conducting equipment.

DCTopologicalIsland

An electrically connected subset of the network. DC topological islands can change as the current network state changes, e.g. due to: - disconnect switches or breakers changing state in a SCADA/EMS. - manual creation, change or deletion of topological nodes in a planning tool. Only energised TopologicalNode-s shall be part of the topological island.

DCTopologicalNode

DC bus.

DCvoltageControl

DC voltage control used for voltage regulation.

DecimalQuantity

Quantity with decimal value and associated unit or currency information.

DefaultBid

DefaultBid is a generic class to hold Default Energy Bid, Default Startup Bid, and Default Minimum Load Bid:

Default Energy Bid A Default Energy Bid is a monotonically increasing staircase function consisting at maximum 10 economic bid segments, or 10 ($/MW, MW) pairs. There are three methods for determining the Default Energy Bid:

Cost Based: derived from the Heat Rate or Average Cost multiplied by the Gas Price Index plus 10%.
LMP Based: a weighted average of LMPs in the preceding 90 days.
Negotiated: an amount negotiated with the designated Independent Entity.

Default Startup Bid A Default Startup Bid (DSUB) shall be calculated for each RMR unit based on the Startup Cost stored in the Master File and the applicable GPI and EPI.

Default Minimum Load Bid A Default Minimum Load Bid (DMLB) shall be calculated for each RMR unit based on the Minimum Load Cost stored in the Master File and the applicable GPI.

DefaultBidCurve

Default bid curve for default energy bid curve and default startup curves (cost and time).

DefaultBidCurveData

Curve data for default bid curve and startup cost curve.

DefaultConstraintLimit

Possibly time-varying max MW or MVA and optionally Min MW limit or MVA limit (Y1 and Y2, respectively) applied as a default value if no specific constraint limits are specified for a contingency analysis. Use CurveSchedule XAxisUnits to specify MW or MVA.

Delay

All the measurements are filtered by a first lag element with a time constant TM.

DemandResponseProgram

Demand response program.

DeploymentDate

Dates for deployment events of an asset. May have multiple deployment type dates for this device and a compound type allows a query to return multiple dates.

DERCurveData

The DER curve data class provides the nominal, maximum and minimum values for a DER Monitorable parameter for a series of time intervals defined by the DER DispatchSchedule.

DERFunction

Specifies the list of functions that are supported.

DERGroupDispatch

Specifies the capabilities of the DER Group that are to be dispatched according to a schedule. Each dispatch identifies a DER Group and the specific monitorable parameter to be dispatched over a specific time interval.

DERGroupForecast

Specifies the forecasted values of the DERMonitorableParameters for a DER Group over a specific time interval.

DERMonitorableParameter

To define the DER monitorable parameters that will be forecasted and dispatched for a DER Group. Each parameter is represented as a Y Value at a point in time or on a curve as a function of time, which is represented on the X axis.

Design

A design for consideration by customers, potential customers, or internal work. Note that the Version of design is the revision attribute that is inherited from Document.

DesignLocation

A logical part of the design (e.g., pole and all equipment on a pole). This includes points and spans.

DesignLocationCU

Compatible unit at a given design location.

DiagnosisDataSet

The result of a problem (typically an asset failure) diagnosis. Contains complete information like what might be received from a lab doing forensic analysis of a failed asset.

Diagram

The diagram being exchanged. The coordinate system is a standard Cartesian coordinate system and the orientation attribute defines the orientation. The initial view related attributes can be used to specify an initial view with the x,y coordinates of the diagonal points.

DiagramObject

An object that defines one or more points in a given space. This object can be associated with anything that specializes IdentifiedObject. For single line diagrams such objects typically include such items as analog values, breakers, disconnectors, power transformers, and transmission lines.

DiagramObjectGluePoint

This is used for grouping diagram object points from different diagram objects that are considered to be glued together in a diagram even if they are not at the exact same coordinates.

DiagramObjectPoint

A point in a given space defined by 3 coordinates and associated to a diagram object. The coordinates may be positive or negative as the origin does not have to be in the corner of a diagram.

DiagramObjectStyle

A reference to a style used by the originating system for a diagram object. A diagram object style describes information such as line thickness, shape such as circle or rectangle etc, and colour.

DiagramStyle

The diagram style refers to a style used by the originating system for a diagram. A diagram style describes information such as schematic, geographic, etc.

DifferentialModel

A set of statements describing the changes in the network model. The statement is defined in the incremental model.

DimensionsInfo

As applicable, the basic linear, area, or volume dimensions of an asset, asset type (AssetModel) or other type of object (such as land area). Units and multipliers are specified per dimension.

DINStandard

Standard published by DIN (German Institute of Standards).

DiscExcContIEEEDEC1A

IEEE type DEC1A discontinuous excitation control model that boosts generator excitation to a level higher than that demanded by the voltage regulator and stabilizer immediately following a system fault. Reference: IEEE 421.5-2005, 12.2.

DiscExcContIEEEDEC2A

IEEE type DEC2A model for discontinuous excitation control. This system provides transient excitation boosting via an open-loop control as initiated by a trigger signal generated remotely. Reference: IEEE 421.5-2005 12.3.

DiscExcContIEEEDEC3A

IEEE type DEC3A model. In some systems, the stabilizer output is disconnected from the regulator immediately following a severe fault to prevent the stabilizer from competing with action of voltage regulator during the first swing. Reference: IEEE 421.5-2005 12.4.

DisconnectingCircuitBreaker

A circuit breaking device including disconnecting function, eliminating the need for separate disconnectors.

Disconnector

A manually operated or motor operated mechanical switching device used for changing the connections in a circuit, or for isolating a circuit or equipment from a source of power. It is required to open or close circuits when negligible current is broken or made.

DiscontinuousExcitationControlDynamics

Discontinuous excitation control function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

DiscontinuousExcitationControlUserDefined

Discontinuous excitation control function block whose dynamic behaviour is described by a user-defined model.

Discrete

Discrete represents a discrete Measurement, i.e. a Measurement representing discrete values, e.g. a Breaker position.

DiscreteMeasurementValueQuality

Measurement quality flags for Discrete Values.

DiscreteValue

DiscreteValue represents a discrete MeasurementValue.

DispatchInstReply

Response from registered resource acknowledging receipt of dispatch instructions.

DispatchSchedule

Specifies the characteristics of the time schedule over which DERMonitorableParameters are dispatched.

DistributedResourceActualEvent

A demand response event is created when there is a need to call upon resources to respond to demand adjustment requests. These events are created by ISO/RTO system operations and managed by a demand response management system (DRMS). These events may or may not be coordinated with the Market Events and a defined Energy Market. The event will call for the deployment of a number of registered resources, or for deployment of resources within a zone (an organizational area within the power system that contains a number of resources).

DistributionFactorSet

A containing class that groups all the distribution factors within a market. This is calculated daily for DA factors and hourly for RT factors.

DobleStandard

Standard published by Doble.

Document

Parent class for different groupings of information collected and managed as a part of a business process. It will frequently contain references to other objects, such as assets, people and power system resources.

DocumentOrganisationRole

Role an organisation plays with respect to documents.

DocumentPersonRole

Person role with respect to documents.

Domain

An area of activity defined within the energy market.

DopInstruction

Provides the necessary information (on a resource basis) to capture the Dispatch Operating Point (DOP) results on a Dispatch interval. This information is only relevant to the RT interval market.

DotInstruction

Provides the necessary information (on a resource basis) to capture the Dispatch Operating Target (DOT) results on a Dispatch interval. This information is only relevant to the RT interval market.

DrumBoiler

Drum boiler.

DuctBank

A duct contains individual wires in the layout as specified with associated wire spacing instances; number of them gives the number of conductors in this duct.

Due

Details on amounts due for an account.

DynamicSchedule

A continuously variable component of a control area's MW net interchange schedule. Dynamic schedules are sent and received by control areas.

DynamicsFunctionBlock

Abstract parent class for all Dynamics function blocks.

EarthFaultCompensator

A conducting equipment used to represent a connection to ground which is typically used to compensate earth faults. An earth fault compensator device modelled with a single terminal implies a second terminal solidly connected to ground. If two terminals are modelled, the ground is not assumed and normal connection rules apply.

Earthquake

An earthquake.

Editor

Person who modified the document.

ElectronicAddress

Electronic address information.

EmissionAccount

Accounts for tracking emissions usage and credits for thermal generating units. A unit may have zero or more emission accounts, and will typically have one for tracking usage and one for tracking credits.

EmissionCurve

Relationship between the unit's emission rate in units of mass per hour (Y-axis) and output active power (X-axis) for a given type of emission. This curve applies when only one type of fuel is being burned.

EndDevice

Asset container that performs one or more end device functions. One type of end device is a meter which can perform metering, load management, connect/disconnect, accounting functions, etc. Some end devices, such as ones monitoring and controlling air conditioners, refrigerators, pool pumps may be connected to a meter. All end devices may have communication capability defined by the associated communication function(s). An end device may be owned by a consumer, a service provider, utility or otherwise. There may be a related end device function that identifies a sensor or control point within a metering application or communications systems (e.g., water, gas, electricity). Some devices may use an optical port that conforms to the ANSI C12.18 standard for communications.

EndDeviceAction

Action/command performed by an end device on a device other than the end device.

EndDeviceCapability

Inherent capabilities of an end device (i.e., the functions it supports).

EndDeviceControl

Instructs an end device (or an end device group) to perform a specified action.

EndDeviceControlType

Detailed description for a control produced by an end device. Values in attributes allow for creation of recommended codes to be used for identifying end device controls as follows: ....

EndDeviceEvent

Event detected by a device function associated with the end device.

EndDeviceEventDetail

Name-value pair, specific to end device events.

EndDeviceEventType

Detailed description for an event produced by an end device. Values in attributes allow for creation of recommended codes to be used for identifying end device events as follows: ....

EndDeviceFunction

Function performed by an end device such as a meter, communication equipment, controllers, etc.

EndDeviceGroup

Abstraction for management of group communications within a two-way AMR system or the data for a group of related end devices. Commands can be issued to all of the end devices that belong to the group using a defined group address and the underlying AMR communication infrastructure. A DERGroup and a PANDeviceGroup is an EndDeviceGroup.

EndDeviceInfo

End device data.

EndDeviceTiming

Timing for the control actions of end devices.

EnergyArea

Describes an area having energy production or consumption. Specializations are intended to support the load allocation function as typically required in energy management systems or planning studies to allocate hypothesized load levels to individual load points for power flow analysis. Often the energy area can be linked to both measured and forecast load levels.

EnergyComponent

n/a

EnergyConnection

A connection of energy generation or consumption on the power system model.

EnergyConsumer

Generic user of energy - a point of consumption on the power system model. EnergyConsumer.pfixed, .qfixed, .pfixedPct and .qfixedPct have meaning only if there is no LoadResponseCharacteristic associated with EnergyConsumer or if LoadResponseCharacteristic.exponentModel is set to False.

EnergyConsumerAction

Action to connect or disconnect the Energy Consumer from its Terminal

EnergyConsumerPhase

A single phase of an energy consumer.

EnergyGroup

n/a

EnergyMarket

Energy and Ancillary Market (e.g. Energy, Spinning Reserve, Non-Spinning Reserve) with a description of the Market operation control parameters.

EnergyPriceCurve

Relationship between a price in $(or other monetary unit) /hour (Y-axis) and a MW value (X-axis).

EnergyPriceIndex

An Energy Price Index for each Resource is valid for a period (e.g. daily) that is identified by a Valid Period Start Time and a Valid Period End Time. An Energy Price Index is in $/MWh.

EnergyProduct

An EnergyProduct is offered commercially as a ContractOrTariff.

EnergyProfile

Specifies the start time, stop time, level for an EnergyTransaction.

EnergySchedulingType

Used to define the type of generation for scheduling purposes.

EnergySource

A generic equivalent for an energy supplier on a transmission or distribution voltage level.

EnergySourceAction

Action on energy source as a switching step.

EnergySourcePhase

Represents the single phase information of an unbalanced energy source.

EnergyTransaction

Specifies the schedule for energy transfers between interchange areas that are necessary to satisfy the associated interchange transaction.

EnergyTypeReference

n/a

EnvironmentalAlert

An environmental alert issued by a provider or system.

EnvironmentalAnalog

Analog (float) measurement of relevance in the environmental domain.

EnvironmentalCodedValue

An environmental value described using a coded value. A triplicate of enumerated values representing intensity, coverage, type of weather is used. These may be concatenated into the string value.

EnvironmentalDataAuthority

An entity defining classifications or categories of environmental information, like phenomena or alerts.

EnvironmentalDataProvider

Entity providing environmental data. Could be an observed weather data provider, an entity providing forecasts, an authority providing alerts, etc.

EnvironmentalDependentLimit

This is a environmental based limit dependency model for calculating operational limits.

EnvironmentalDiscrete

Discrete (integer) measurement of relevance in the environmental domain.

EnvironmentalEvent

An environmental event to which one or more forecasts or observations may be tied and which may relate to or affect one or more assets. This class is intended to be used as a means of grouping forecasts and/or observations and could be used for a variety of purposes, including:

to define a 'named' event like Hurricane Katrina and allow the historic (or forecast) values for phenomena and measurements (precipitation, temperature) across time to be associated with it
to identify assets that were (or are forecast to be) affected by a phenomenon or set of measurements

EnvironmentalInformation

Abstract class (with concrete child classes of Observation and Forecast) that groups phenomenon and/or environmental value sets.

EnvironmentalLocationType

Type of environmental location. Used when an environmental alert or phenomenon has multiple locations associated with it.

EnvironmentalMonitoringStation

An environmental monitoring station, examples of which could be a weather station or a seismic monitoring station.

EnvironmentalPhenomenon

The actual or forecast characteristics of an environmental phenomenon at a specific point in time (or during a specific time interval) that may have both a center and area/line location.

EnvironmentalStringMeasurement

String measurement of relevance in the environmental domain.

EPAStandard

Standard published by EPA (United States Environmental Protection Agency).

Equipment

The parts of a power system that are physical devices, electronic or mechanical.

EquipmentContainer

A modelling construct to provide a root class for containing equipment.

EquipmentFault

A fault applied at the terminal, external to the equipment. This class is not used to specify faults internal to the equipment.

EquipmentLimitSeriesComponent

This represents one instance of an equipment that contributes to the calculation of an operational limit.

EquipmentUnavailabilitySchedule

n/a

EquivalentBranch

The class represents equivalent branches. In cases where a transformer phase shift is modelled and the EquivalentBranch is spanning the same nodes, the impedance quantities for the EquivalentBranch shall consider the needed phase shift.

EquivalentEquipment

The class represents equivalent objects that are the result of a network reduction. The class is the base for equivalent objects of different types.

EquivalentInjection

This class represents equivalent injections (generation or load). Voltage regulation is allowed only at the point of connection.

EquivalentNetwork

A class that groups electrical equivalents, including internal nodes, of a network that has been reduced. The ConnectivityNodes contained in the equivalent are intended to reflect internal nodes of the equivalent. The boundary Connectivity nodes where the equivalent connects outside itself are not contained by the equivalent.

EquivalentShunt

The class represents equivalent shunts.

ErpBankAccount

Relationship under a particular name, usually evidenced by a deposit against which withdrawals can be made. Types of bank accounts include: demand, time, custodial, joint, trustee, corporate, special, and regular accounts. A statement of transactions during a fiscal period and the resulting balance is maintained on each account. For Payment metering, the account is associated with Bank and Supplier, reflecting details of the bank account used for depositing revenue collected by TokenVendor. The name of the account holder should be specified in 'name' attribute.

ErpBOM

Information that generally describes the Bill of Material Structure and its contents for a utility.

This is used by ERP systems to transfer Bill of Material information between two business applications.

ErpBomItemData

An individual item on a bill of materials.

ErpChartOfAccounts

Accounting structure of a business. Each account represents a financial aspect of a business, such as its Accounts Payable, or the value of its inventory, or its office supply expenses.

ErpCompetency

Information that describes aptitudes of a utility employee. Unlike Skills that an ErpPerson must be certified to perform before undertaking certain type of assignments (to be able to perfrom a Craft), ErpCompetency has more to do with typical Human Resource (HR) matters such as schooling, training, etc.

ErpDocument

Shadow class for Document, to isolate subclassing from this package. If any subclass gets normative and needs inheritance, it will inherit directly from Document.

ErpEngChangeOrder

General Utility Engineering Change Order information.

ErpIdentifiedObject

Shadow class for IdentifiedObject, to isolate subclassing from this package. If any subclass gets normative and needs inheritance, it will inherit directly from IdentifiedObject.

ErpInventory

Utility inventory-related information about an item or part (and not for description of the item and its attributes). It is used by ERP applications to enable the synchronization of Inventory data that exists on separate Item Master databases. This data is not the master data that describes the attributes of the item such as dimensions, weight, or unit of measure - it describes the item as it exists at a specific location.

ErpInventoryCount

This is related to Inventory physical counts organized by AssetModel. Note that a count of a type of asset can be accomplished by the association inherited by AssetModel (from Document) to Asset. It enables ERP applications to transfer an inventory count between ERP and the actual physical inventory location. This count may be a cycle count or a physical count.

ErpInvoice

A roll up of invoice line items. The whole invoice has a due date and amount to be paid, with information such as customer, banks etc. being obtained through associations. The invoice roll up is based on individual line items that each contain amounts and descriptions for specific services or products.

ErpInvoiceLineItem

An individual line item on an invoice.

ErpIssueInventory

Can be used to request an application to process an issue or request information about an issue.

ErpItemMaster

Any unique purchased part for manufactured product tracked by ERP systems for a utility. Item, as used by the OAG, refers to the basic information about an item, including its attributes, cost, and locations. It does not include item quantities. Compare to the Inventory, which includes all quantities and other location-specific information.

ErpJournal

Book for recording accounting transactions as they occur. Transactions and adjustments are first recorded in a journal, which is like a diary of instructions, advising which account to be charged and by how much. A journal represents a change in the balances of a business's financial accounts. Many tasks or transactions throughout an enterprise will result in the creation of a journal. Some examples are creating a customer invoice, paying a vendor, transferring inventory, or paying employees.

ErpJournalEntry

Details of an individual entry in a journal, which is to be posted to a ledger on the posting date.

ErpLedBudLineItem

Individual entry of a given Ledger Budget, typically containing information such as amount, accounting date, accounting period, and is associated with the applicable general ledger account.

ErpLedger

In accounting transactions, a ledger is a book containing accounts to which debits and credits are posted from journals, where transactions are initially recorded. Journal entries are periodically posted to the ledger. Ledger Actual represents actual amounts by account within ledger within company or business area. Actual amounts may be generated in a source application and then loaded to a specific ledger within the enterprise general ledger or budget application.

ErpLedgerBudget

Information for utility Ledger Budgets. They support the transfer budget amounts between all possible source applications throughout an enterprise and a general ledger or budget application.

ErpLedgerEntry

Details of an individual entry in a ledger, which was posted from a journal on the posted date.

ErpPayable

A transaction that represents an invoice from a supplier. A payable (or voucher) is an open item, approved and ready for payment, in the Accounts Payable ledger.

ErpPayableLineItem

Of an ErpPayable, a line item references an ErpInvoiceLineitem or other source such as credit memos.

ErpPayment

Payment infromation and status for any individual line item of an ErpInvoice (e.g., when payment is from a customer). ErpPayable is also updated when payment is to a supplier and ErpReceivable is updated when payment is from a customer. Multiple payments can be made against a single line item and an individual payment can apply to more that one line item.

ErpPersonnel

Information that applies to the basic data about a utility person, used by ERP applications to transfer Personnel data for a worker.

ErpPOLineItem

Of an ErpPurchaseOrder, this is an individually ordered item or product along with the quantity, price and other descriptive information.

ErpProjectAccounting

Utility Project Accounting information, used by ERP applications to enable all relevant sub-systems that submit single sided transactions to transfer information with a Project Accounting Application. This would include, but not necessarily be limited to: Accounts Payable, Accounts Receivable, Budget, Order Management, Purchasing, Time and Labor, Travel and Expense.

ErpPurchaseOrder

A document that communicates an order to purchase goods from a buyer to a supplier. The PurchaseOrder carries information to and from the buyer and supplier. It is a legally binding document once both Parties agree to the contents and the specified terms and conditions of the order.

ErpQuote

Document describing the prices of goods or services provided by a supplier. It includes the terms of the purchase, delivery proposals, identification of goods or services ordered, as well as their quantities.

ErpQuoteLineItem

Of an ErpQuote, the item or product quoted along with quantity, price and other descriptive information.

ErpRecDelvLineItem

Of an ErpReceiveDelivery, this is an individually received good or service by the Organisation receiving goods or services. It may be used to indicate receipt of goods in conjunction with a purchase order line item.

ErpReceivable

Transaction representing an invoice, credit memo or debit memo to a customer. It is an open (unpaid) item in the Accounts Receivable ledger.

ErpReceiveDelivery

Transaction for an Organisation receiving goods or services that may be used to indicate receipt of goods in conjunction with a purchase order. A receivable is an open (unpaid) item in the Accounts Receivable ledger.

ErpRecLineItem

Individual entry of an ErpReceivable, it is a particular transaction representing an invoice, credit memo or debit memo to a customer.

ErpReqLineItem

Information that describes a requested item and its attributes.

ErpRequisition

General information that applies to a utility requisition that is a request for the purchase of goods or services. Typically, a requisition leads to the creation of a purchase order to a specific supplier.

ErpSalesOrder

General purpose Sales Order is used for utility service orders, etc. As used by the OAG, the SalesOrder is a step beyond a PurchaseOrder in that the receiving entity of the order also communicates SalesInformoration about the Order along with the Order itself.

ErpSiteLevelData

For a utility, general information that describes physical locations of organizations or the location codes and their meanings. This enables ERP applications to ensure that the physical location identifiers are synchronized between the business applications.

ErpTimeEntry

An individual entry on an ErpTimeSheet.

ErpTimeSheet

Time sheet for employees and contractors. Note that ErpTimeSheet inherits the relationship to ErpPerson from Document.

EstimatedRestorationTime

The Estimated Restoration Time (ERT) for a single outage

ExcAC1A

Modified IEEE AC1A alternator-supplied rectifier excitation system with different rate feedback source.

ExcAC2A

Modified IEEE AC2A alternator-supplied rectifier excitation system with different field current limit.

ExcAC3A

Modified IEEE AC3A alternator-supplied rectifier excitation system with different field current limit.

ExcAC4A

Modified IEEE AC4A alternator-supplied rectifier excitation system with different minimum controller output.

ExcAC5A

Modified IEEE AC5A alternator-supplied rectifier excitation system with different minimum controller output.

ExcAC6A

Modified IEEE AC6A alternator-supplied rectifier excitation system with speed input.

ExcAC8B

Modified IEEE AC8B alternator-supplied rectifier excitation system with speed input and input limiter.

ExcANS

Italian excitation system. It represents static field voltage or excitation current feedback excitation system.

ExcAVR1

Italian excitation system corresponding to IEEE (1968) type 1 model. It represents an exciter dynamo and electromechanical regulator.

ExcAVR2

Italian excitation system corresponding to IEEE (1968) type 2 model. It represents an alternator and rotating diodes and electromechanic voltage regulators.

ExcAVR3

Italian excitation system. It represents an exciter dynamo and electric regulator.

ExcAVR4

Italian excitation system. It represents a static exciter and electric voltage regulator.

ExcAVR5

Manual excitation control with field circuit resistance. This model can be used as a very simple representation of manual voltage control.

ExcAVR7

IVO excitation system.

ExcBBC

Transformer fed static excitation system (static with ABB regulator). This model represents a static excitation system in which a gated thyristor bridge fed by a transformer at the main generator terminals feeds the main generator directly.

ExcCZ

Czech proportion/integral exciter.

ExcDC1A

Modified IEEE DC1A direct current commutator exciter with speed input and without underexcitation limiters (UEL) inputs.

ExcDC2A

Modified IEEE DC2A direct current commutator exciter with speed input, one more leg block in feedback loop and without underexcitation limiters (UEL) inputs. DC type 2 excitation system model with added speed multiplier, added lead-lag, and voltage-dependent limits.

ExcDC3A

Modified IEEE DC3A direct current commutator exciter with speed input, and deadband. DC old type 4.

ExcDC3A1

Modified old IEEE type 3 excitation system.

ExcELIN1

Static PI transformer fed excitation system ELIN (VATECH) - simplified model. This model represents an all-static excitation system. A PI voltage controller establishes a desired field current set point for a proportional current controller. The integrator of the PI controller has a follow-up input to match its signal to the present field current. A power system stabilizer with power input is included in the model.

ExcELIN2

Detailed excitation system ELIN (VATECH). This model represents an all-static excitation system. A PI voltage controller establishes a desired field current set point for a proportional current controller. The integrator of the PI controller has a follow-up input to match its signal to the present field current. Power system stabilizer models used in conjunction with this excitation system model: PssELIN2, PssIEEE2B, Pss2B.

ExcHU

Hungarian excitation system, with built-in voltage transducer.

ExcIEEEAC1A

IEEE 421.5-2005 type AC1A model. The model represents the field-controlled alternator-rectifier excitation systems designated type AC1A. These excitation systems consist of an alternator main exciter with non-controlled rectifiers. Reference: IEEE 421.5-2005, 6.1.

ExcIEEEAC2A

IEEE 421.5-2005 type AC2A model. The model represents a high initial response field-controlled alternator-rectifier excitation system. The alternator main exciter is used with non-controlled rectifiers. The type AC2A model is similar to that of type AC1A except for the inclusion of exciter time constant compensation and exciter field current limiting elements. Reference: IEEE 421.5-2005, 6.2.

ExcIEEEAC3A

IEEE 421.5-2005 type AC3A model. The model represents the field-controlled alternator-rectifier excitation systems designated type AC3A. These excitation systems include an alternator main exciter with non-controlled rectifiers. The exciter employs self-excitation, and the voltage regulator power is derived from the exciter output voltage. Therefore, this system has an additional nonlinearity, simulated by the use of a multiplier whose inputs are the voltage regulator command signal, Va, and the exciter output voltage, Efd, times K_R. This model is applicable to excitation systems employing static voltage regulators. Reference: IEEE 421.5-2005, 6.3.

ExcIEEEAC4A

IEEE 421.5-2005 type AC4A model. The model represents type AC4A alternator-supplied controlled-rectifier excitation system which is quite different from the other types of AC systems. This high initial response excitation system utilizes a full thyristor bridge in the exciter output circuit. The voltage regulator controls the firing of the thyristor bridges. The exciter alternator uses an independent voltage regulator to control its output voltage to a constant value. These effects are not modelled; however, transient loading effects on the exciter alternator are included. Reference: IEEE 421.5-2005, 6.4.

ExcIEEEAC5A

IEEE 421.5-2005 type AC5A model. The model represents a simplified model for brushless excitation systems. The regulator is supplied from a source, such as a permanent magnet generator, which is not affected by system disturbances. Unlike other AC models, this model uses loaded rather than open circuit exciter saturation data in the same way as it is used for the DC models. Because the model has been widely implemented by the industry, it is sometimes used to represent other types of systems when either detailed data for them are not available or simplified models are required. Reference: IEEE 421.5-2005, 6.5.

ExcIEEEAC6A

IEEE 421.5-2005 type AC6A model. The model represents field-controlled alternator-rectifier excitation systems with system-supplied electronic voltage regulators. The maximum output of the regulator, V_R, is a function of terminal voltage, V_T. The field current limiter included in the original model AC6A remains in the 2005 update. Reference: IEEE 421.5-2005, 6.6.

ExcIEEEAC7B

IEEE 421.5-2005 type AC7B model. The model represents excitation systems which consist of an AC alternator with either stationary or rotating rectifiers to produce the DC field requirements. It is an upgrade to earlier AC excitation systems, which replace only the controls but retain the AC alternator and diode rectifier bridge. Reference: IEEE 421.5-2005, 6.7. Note, however, that in IEEE 421.5-2005, the [1 / sT_E] block is shown as [1 / (1 + sT_E)], which is incorrect.

ExcIEEEAC8B

IEEE 421.5-2005 type AC8B model. This model represents a PID voltage regulator with either a brushless exciter or DC exciter. The AVR in this model consists of PID control, with separate constants for the proportional (K_PR), integral (K_IR), and derivative (K_DR) gains. The representation of the brushless exciter (T_E, K_E, S_E, K_C, K_D) is similar to the model type AC2A. The type AC8B model can be used to represent static voltage regulators applied to brushless excitation systems. Digitally based voltage regulators feeding DC rotating main exciters can be represented with the AC type AC8B model with the parameters K_C and K_D set to 0. For thyristor power stages fed from the generator terminals, the limits V_RMAX and V_RMIN should be a function of terminal voltage: V_T x V_RMAXand V_T x V_RMIN. Reference: IEEE 421.5-2005, 6.8.

ExcIEEEDC1A

IEEE 421.5-2005 type DC1A model. This model represents field-controlled DC commutator exciters with continuously acting voltage regulators (especially the direct-acting rheostatic, rotating amplifier, and magnetic amplifier types). Because this model has been widely implemented by the industry, it is sometimes used to represent other types of systems when detailed data for them are not available or when a simplified model is required. Reference: IEEE 421.5-2005, 5.1.

ExcIEEEDC2A

IEEE 421.5-2005 type DC2A model. This model represents field-controlled DC commutator exciters with continuously acting voltage regulators having supplies obtained from the generator or auxiliary bus. It differs from the type DC1A model only in the voltage regulator output limits, which are now proportional to terminal voltage V_T. It is representative of solid-state replacements for various forms of older mechanical and rotating amplifier regulating equipment connected to DC commutator exciters. Reference: IEEE 421.5-2005, 5.2.

ExcIEEEDC3A

IEEE 421.5-2005 type DC3A model. This model represents older systems, in particular those DC commutator exciters with non-continuously acting regulators that were commonly used before the development of the continuously acting varieties. These systems respond at basically two different rates, depending upon the magnitude of voltage error. For small errors, adjustment is made periodically with a signal to a motor-operated rheostat. Larger errors cause resistors to be quickly shorted or inserted and a strong forcing signal applied to the exciter. Continuous motion of the motor-operated rheostat occurs for these larger error signals, even though it is bypassed by contactor action. Reference: IEEE 421.5-2005, 5.3.

ExcIEEEDC4B

IEEE 421.5-2005 type DC4B model. These excitation systems utilize a field-controlled DC commutator exciter with a continuously acting voltage regulator having supplies obtained from the generator or auxiliary bus. Reference: IEEE 421.5-2005, 5.4.

ExcIEEEST1A

IEEE 421.5-2005 type ST1A model. This model represents systems in which excitation power is supplied through a transformer from the generator terminals (or the unit’s auxiliary bus) and is regulated by a controlled rectifier. The maximum exciter voltage available from such systems is directly related to the generator terminal voltage. Reference: IEEE 421.5-2005, 7.1.

ExcIEEEST2A

IEEE 421.5-2005 type ST2A model. Some static systems use both current and voltage sources (generator terminal quantities) to comprise the power source. The regulator controls the exciter output through controlled saturation of the power transformer components. These compound-source rectifier excitation systems are designated type ST2A and are represented by ExcIEEEST2A. Reference: IEEE 421.5-2005, 7.2.

ExcIEEEST3A

IEEE 421.5-2005 type ST3A model. Some static systems utilize a field voltage control loop to linearize the exciter control characteristic. This also makes the output independent of supply source variations until supply limitations are reached. These systems utilize a variety of controlled-rectifier designs: full thyristor complements or hybrid bridges in either series or shunt configurations. The power source can consist of only a potential source, either fed from the machine terminals or from internal windings. Some designs can have compound power sources utilizing both machine potential and current. These power sources are represented as phasor combinations of machine terminal current and voltage and are accommodated by suitable parameters in model type ST3A which is represented by ExcIEEEST3A. Reference: IEEE 421.5-2005, 7.3.

ExcIEEEST4B

IEEE 421.5-2005 type ST4B model. This model is a variation of the type ST3A model, with a proportional plus integral (PI) regulator block replacing the lag-lead regulator characteristic that is in the ST3A model. Both potential and compound source rectifier excitation systems are modelled. The PI regulator blocks have non-windup limits that are represented. The voltage regulator of this model is typically implemented digitally. Reference: IEEE 421.5-2005, 7.4.

ExcIEEEST5B

IEEE 421.5-2005 type ST5B model. The type ST5B excitation system is a variation of the type ST1A model, with alternative overexcitation and underexcitation inputs and additional limits. The block diagram in the IEEE 421.5 standard has input signal Vc and does not indicate the summation point with Vref. The implementation of the ExcIEEEST5B shall consider summation point with Vref. Reference: IEEE 421.5-2005, 7.5.

ExcIEEEST6B

IEEE 421.5-2005 type ST6B model. This model consists of a PI voltage regulator with an inner loop field voltage regulator and pre-control. The field voltage regulator implements a proportional control. The pre-control and the delay in the feedback circuit increase the dynamic response. Reference: IEEE 421.5-2005, 7.6.

ExcIEEEST7B

IEEE 421.5-2005 type ST7B model. This model is representative of static potential-source excitation systems. In this system, the AVR consists of a PI voltage regulator. A phase lead-lag filter in series allows the introduction of a derivative function, typically used with brushless excitation systems. In that case, the regulator is of the PID type. In addition, the terminal voltage channel includes a phase lead-lag filter. The AVR includes the appropriate inputs on its reference for overexcitation limiter (OEL1), underexcitation limiter (UEL), stator current limiter (SCL), and current compensator (DROOP). All these limitations, when they work at voltage reference level, keep the PSS (VS signal from PSS) in operation. However, the UEL limitation can also be transferred to the high value (HV) gate acting on the output signal. In addition, the output signal passes through a low value (LV) gate for a ceiling overexcitation limiter (OEL2). Reference: IEEE 421.5-2005, 7.7.

ExcitationSystemDynamics

Excitation system function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

ExcitationSystemUserDefined

Excitation system function block whose dynamic behaviour is described by a user-defined model.

ExcNI

Bus or solid fed SCR (silicon-controlled rectifier) bridge excitation system model type NI (NVE).

ExcOEX3T

Modified IEEE type ST1 excitation system with semi-continuous and acting terminal voltage limiter.

ExcPIC

Proportional/integral regulator excitation system. This model can be used to represent excitation systems with a proportional-integral (PI) voltage regulator controller.

ExcREXS

General purpose rotating excitation system. This model can be used to represent a wide range of excitation systems whose DC power source is an AC or DC generator. It encompasses IEEE type AC1, AC2, DC1, and DC2 excitation system models.

ExcRQB

Excitation system type RQB (four-loop regulator, r?gulateur quatre boucles, developed in France) primarily used in nuclear or thermal generating units. This excitation system shall be always used together with power system stabilizer type PssRQB.

ExcSCRX

Simple excitation system with generic characteristics typical of many excitation systems; intended for use where negative field current could be a problem.

ExcSEXS

Simplified excitation system.

ExcSK

Slovakian excitation system. UEL and secondary voltage control are included in this model. When this model is used, there cannot be a separate underexcitation limiter or VAr controller model.

ExcST1A

Modification of an old IEEE ST1A static excitation system without overexcitation limiter (OEL) and underexcitation limiter (UEL).

ExcST2A

Modified IEEE ST2A static excitation system with another lead-lag block added to match the model defined by WECC.

ExcST3A

Modified IEEE ST3A static excitation system with added speed multiplier.

ExcST4B

Modified IEEE ST4B static excitation system with maximum inner loop feedback gain Vgmax.

ExcST6B

Modified IEEE ST6B static excitation system with PID controller and optional inner feedback loop.

ExcST7B

Modified IEEE ST7B static excitation system without stator current limiter (SCL) and current compensator (DROOP) inputs.

ExpectedEnergy

Model Expected Energy from Market Clearing, interval based.

ExpectedEnergyValues

Model Expected Energy from Market Clearing.

ExPostLoss

Model of ex-post calcultion of MW losses.

ExPostLossResults

Model results of ex-post calculation of MW losses. Summarizes loss in two categories losses on the the extra high voltage transmission and total losses. Calculated for each subcontrol area.

ExPostMarketRegion

Model of ex-post calculation of cleared MW on a regional basis.

ExPostMarketRegionResults

Model of expost calculation of cleared MW on a region basis. Includes cleared price.

ExPostPricing

Model of ex-post pricing of nodes.

ExPostPricingResults

Model of ex-post pricing of nodes. Includes LMP information, pnode based.

ExPostResource

Model of ex-post pricing of resources.

ExPostResourceResults

Model of ex-post pricing of resources contains components of LMPs: energy, congestion, loss. Resource based.

ExtensionItem

Specifies the extensions list items

ExtensionsList

Specifies the enumeration of the extension item

ExternalCustomerAgreement

A type of customer agreement involving an external agency. For example, a customer may form a contracts with an Energy Service Supplier if Direct Access is permitted.

ExternalNetworkInjection

This class represents the external network and it is used for IEC 60909 calculations.

Facility

A facility may contain buildings, storage facilities, switching facilities, power generation, manufacturing facilities, maintenance facilities, etc.

FACTSDevice

FACTS device asset.

FailureEvent

An event where an asset has failed to perform its functions within specified parameters. This class is intended to reflect the failure itself. Additional information resulting from forensic analysis could be captured by a diagnosis data set.

Fault

Abnormal condition causing current flow through conducting equipment, such as caused by equipment failure or short circuits from objects not typically modelled (for example, a tree falling on a line).

FaultCauseType

Type of cause of the fault.

FaultImpedance

Impedance description for the fault.

FaultIndicator

A FaultIndicator is typically only an indicator (which may or may not be remotely monitored), and not a piece of equipment that actually initiates a protection event. It is used for FLISR (Fault Location, Isolation and Restoration) purposes, assisting with the dispatch of crews to "most likely" part of the network (i.e. assists with determining circuit section where the fault most likely happened).

FaultIndicatorInfo

Parameters of fault indicator asset.

Feeder

A collection of equipment for organizational purposes, used for grouping distribution resources. The organization a feeder does not necessarily reflect connectivity or current operation state.

FieldDispatchHistory

The history of field dispatch statuses for this work.

FieldDispatchStep

Details of the step in the field dispatch history.

FieldSafetySupervisor

Crew member on work site responsible for all local safety measures for the work crew doing maintenance, construction and repair in a substation or on a power line/cable.

FinancialInfo

Various current financial properties associated with a particular asset. Historical properties may be determined by ActivityRecords associated with the asset.

Fire

A fire, often uncontrolled, covering an area of land which typically contains combustible vegetation. Associated location information is assumed to describe the total area burned as of a specified time.

FiveMinAuxiliaryData

Models 5-Minutes Auxiliary Data.

FloatQuantity

Quantity with float value and associated unit information.

Flood

A flood, an overflowing of a large amount of water beyond its normal confines, esp. over what is normally dry land.

FlowDirection

The coded identification of the direction of energy flow.

Flowgate

A flowgate, is single or group of transmission elements intended to model MW flow impact relating to transmission limitations and transmission service usage.

FlowgatePartner

Flowgate defined partner.

FlowgateRelief

IDC (Interchange Distribution Calulator) sends data for a TLR (Transmission Loading Relief).

FlowgateValue

Day Ahead, Network Native Load, Economic Dispatch, values used for calculation of Network Native Load (NNL) Determinator process.

ForbiddenRegion

Forbbiden region is operating ranges where the units are unable to maintain steady operation without causing equipment damage. The four attributes that define a forbidden region are the low MW, the High MW, the crossing time, and the crossing cost.

Forecast

A forecast group of value sets and/or phenomena characteristics.

FormerReference

Used to indicate former references to the same piece of equipment. The ID, name, and effectivity dates are utilized.

FossilFuel

The fossil fuel consumed by the non-nuclear thermal generating unit. For example, coal, oil, gas, etc. These are the specific fuels that the generating unit can consume.

FossilSteamSupply

Fossil fuelled boiler (e.g., coal, oil, gas).

FrameworkPart

The type of alternate model frame. For example, it could be generator group used to represent generators in state estimator, planning, planning dynamics, short circuit, or real-time dynamics etc., but does not specifically represent any one alternative model. This need to know what objects to be removed in the realization of any one alternate model.

FrequencyConverter

A device to convert from one frequency to another (e.g., frequency F1 to F2) comprises a pair of FrequencyConverter instances. One converts from F1 to DC, the other converts the DC to F2.

FTR

Financial Transmission Rights (FTR) regarding transmission capacity at a flowgate.

FuelAllocationSchedule

The amount of fuel of a given type which is allocated for consumption over a specified period of time.

FuelCostCurve

Relationship between unit fuel cost in $/kWh(Y-axis) and unit output in MW (X-axis).

FuelRegion

Indication of region for fuel inventory purposes.

Fuse

An overcurrent protective device with a circuit opening fusible part that is heated and severed by the passage of overcurrent through it. A fuse is considered a switching device because it breaks current.

GasPrice

Price of gas in monetary units.

Gate

Logical gate than support logical operation based on the input.

GateInputPin

Input pin for a logical gate. The condition described in the input pin will give a logical true or false. Result from measurement and calculation are converted to a true or false.

GenDistributionFactor

This class models the generation distribution factors. This class needs to be used along with the AggregatedPnode and the IndividualPnode to show the distribution of each individual party.

GeneralClearing

Model of clearing result of the market run at the market level. Identifies interval.

GeneralClearingResults

Provides the adjusted load forecast value on a load forecast zone basis.

GeneratingBid

Offer to supply energy/ancillary services from a generating unit or resource.

GeneratingUnit

A single or set of synchronous machines for converting mechanical power into alternating-current power. For example, individual machines within a set may be defined for scheduling purposes while a single control signal is derived for the set. In this case there would be a GeneratingUnit for each member of the set and an additional GeneratingUnit corresponding to the set.

GeneratingUnitDynamicValues

Optimal Power Flow or State Estimator Unit Data for Operator Training Simulator. This is used for RealTime, Study and Maintenance Users.

GenerationProvider

The energy seller in the energy marketplace.

GeneratorTypeAsset

Generic generation equipment that may be used for various purposes such as work planning. It defines both the Real and Reactive power properties (modelled at the PSR level as a GeneratingUnit + SynchronousMachine).

GenericAction

An arbitrary switching step.

GenericConstraints

Generic constraints can represent secure areas, voltage profile, transient stability and voltage collapse limits.

The generic constraints can be one of the following forms: a) Thermal MW limit constraints type b) Group line flow constraint type

GenericDataSetVersion

n/a

GenICompensationForGenJ

Resistive and reactive components of compensation for generator associated with IEEE type 2 voltage compensator for current flow out of another generator in the interconnection.

GenUnitOpCostCurve

Relationship between unit operating cost (Y-axis) and unit output active power (X-axis). The operating cost curve for thermal units is derived from heat input and fuel costs. The operating cost curve for hydro units is derived from water flow rates and equivalent water costs.

GenUnitOpSchedule

The generating unit's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The X-axis represents absolute time. The Y1-axis represents the status (0=off-line and unavailable: 1=available: 2=must run: 3=must run at fixed power value: etc.). The Y2-axis represents the must run fixed power value where required.

GeographicalRegion

A geographical region of a power system network model.

GeosphericAnalog

Analog (float) measuring a geospheric condition.

GeosphericPhenomenon

A geospheric phenomenon.

GovCT1

General model for any prime mover with a PID governor, used primarily for combustion turbine and combined cycle units. This model can be used to represent a variety of prime movers controlled by PID governors. It is suitable, for example, for the representation of:

gas turbine and single shaft combined cycle turbines

diesel engines with modern electronic or digital governors

steam turbines where steam is supplied from a large boiler drum or a large header whose pressure is substantially constant over the period under study
simple hydro turbines in dam configurations where the water column length is short and water inertia effects are minimal.

Additional information on this model is available in the 2012 IEEE report, Dynamic Models for Turbine-Governors in Power System Studies, 3.1.2.3 pages 3-4 (GGOV1).

GovCT2

General governor with frequency-dependent fuel flow limit. This model is a modification of the GovCT1 model in order to represent the frequency-dependent fuel flow limit of a specific gas turbine manufacturer.

GovGAST

Single shaft gas turbine.

GovGAST1

Modified single shaft gas turbine.

GovGAST2

Gas turbine.

GovGAST3

Generic turbogas with acceleration and temperature controller.

GovGAST4

Generic turbogas.

GovGASTWD

Woodward™ gas turbine governor. [Footnote: Woodward gas turbines are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

GovHydro1

Basic hydro turbine governor.

GovHydro2

IEEE hydro turbine governor with straightforward penstock configuration and hydraulic-dashpot governor.

GovHydro3

Modified IEEE hydro governor-turbine. This model differs from that defined in the IEEE modelling guideline paper in that the limits on gate position and velocity do not permit "wind up" of the upstream signals.

GovHydro4

Hydro turbine and governor. Represents plants with straight-forward penstock configurations and hydraulic governors of the traditional 'dashpot' type. This model can be used to represent simple, Francis/Pelton or Kaplan turbines.

GovHydroDD

Double derivative hydro governor and turbine.

GovHydroFrancis

Detailed hydro unit - Francis model. This model can be used to represent three types of governors. A schematic of the hydraulic system of detailed hydro unit models, such as Francis and Pelton, is provided in the DetailedHydroModelHydraulicSystem diagram.

GovHydroIEEE0

IEEE simplified hydro governor-turbine model. Used for mechanical-hydraulic and electro-hydraulic turbine governors, with or without steam feedback. Typical values given are for mechanical-hydraulic turbine-governor. Reference: IEEE Transactions on Power Apparatus and Systems, November/December 1973, Volume PAS-92, Number 6, Dynamic Models for Steam and Hydro Turbines in Power System Studies, page 1904.

GovHydroIEEE2

IEEE hydro turbine governor model represents plants with straightforward penstock configurations and hydraulic-dashpot governors. Reference: IEEE Transactions on Power Apparatus and Systems, November/December 1973, Volume PAS-92, Number 6, Dynamic Models for Steam and Hydro Turbines in Power System Studies, page 1904.

GovHydroPelton

Detailed hydro unit - Pelton model. This model can be used to represent the dynamic related to water tunnel and surge chamber. The DetailedHydroModelHydraulicSystem diagram, located under the GovHydroFrancis class, provides a schematic of the hydraulic system of detailed hydro unit models, such as Francis and Pelton.

GovHydroPID

PID governor and turbine.

GovHydroPID2

Hydro turbine and governor. Represents plants with straightforward penstock configurations and "three term" electro-hydraulic governors (i.e. Woodward^TM electronic). [Footnote: Woodward electronic governors are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

GovHydroR

Fourth order lead-lag governor and hydro turbine.

GovHydroWEH

Woodward^TMelectric hydro governor. [Footnote: Woodward electric hydro governors are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

GovHydroWPID

Woodward^TM PID hydro governor. [Footnote: Woodward PID hydro governors are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

GovSteam0

A simplified steam turbine governor.

GovSteam1

Steam turbine governor, based on the GovSteamIEEE1 (with optional deadband and nonlinear valve gain added).

GovSteam2

Simplified governor.

GovSteamBB

European governor model.

GovSteamCC

Cross compound turbine governor. Unlike tandem compound units, cross compound units are not on the same shaft.

GovSteamEU

Simplified boiler and steam turbine with PID governor.

GovSteamFV2

Steam turbine governor with reheat time constants and modelling of the effects of fast valve closing to reduce mechanical power.

GovSteamFV3

Simplified GovSteamIEEE1 steam turbine governor with Prmax limit and fast valving.

GovSteamFV4

Detailed electro-hydraulic governor for steam unit.

GovSteamIEEE1

IEEE steam turbine governor model. Reference: IEEE Transactions on Power Apparatus and Systems, November/December 1973, Volume PAS-92, Number 6, Dynamic Models for Steam and Hydro Turbines in Power System Studies, page 1904.

GovSteamSGO

Simplified steam turbine governor.

GrossToNetActivePowerCurve

Relationship between the generating unit's gross active power output on the X-axis (measured at the terminals of the machine(s)) and the generating unit's net active power output on the Y-axis (based on utility-defined measurements at the power station). Station service loads, when modelled, should be treated as non-conforming bus loads. There may be more than one curve, depending on the auxiliary equipment that is in service.

Ground

A point where the system is grounded used for connecting conducting equipment to ground. The power system model can have any number of grounds.

GroundAction

Action on ground as a switching step.

GroundDisconnector

A manually operated or motor operated mechanical switching device used for isolating a circuit or equipment from ground.

GroundingImpedance

A fixed impedance device used for grounding.

Hazard

An object or a condition that is a danger for causing loss or perils to an asset and/or people.

HealthScore

Score that is indicative of the health of one or more assets.

HeatInputCurve

Relationship between unit heat input in energy per time for main fuel (Y1-axis) and supplemental fuel (Y2-axis) versus unit output in active power (X-axis). The quantity of main fuel used to sustain generation at this output level is prorated for throttling between definition points. The quantity of supplemental fuel used at this output level is fixed and not prorated.

HeatRateCurve

Relationship between unit heat rate per active power (Y-axis) and unit output (X-axis). The heat input is from all fuels.

HeatRecoveryBoiler

The heat recovery system associated with combustion turbines in order to produce steam for combined cycle plants.

HostControlArea

A HostControlArea has a set of tie points and a set of generator controls (i.e., AGC). It also has a total load, including transmission and distribution losses.

HourlyPreDispatchSchedule

An indicator specifying that a resource shall have an Hourly Pre-Dispatch. The resource could be a RegisteredGenerator or a RegisteredInterTie.

This schedule is assocated with the hourly parameters in a resource bid.

Hurricane

A hurricane, a subtype of cyclone occurring in the North Atlantic Ocean or North-eastern Pacific Ocean whose intensity is measured using the Saffir-Simpson Hurricane Scale.

HVDCDynamics

HVDC whose behaviour is described by reference to a standard model or by definition of a user-defined model.

HVDCLookUpTable

n/a

HydroGeneratingEfficiencyCurve

Relationship between unit efficiency as percentage and unit output active power for a given net head in meters. The relationship between efficiency, discharge, head, and power output is expressed as follows: E =KP/HQ where: E is the efficiency, as a percentage; P is the active power; H is the height; Q is the discharge, volume/time unit; K is a constant. For example, a curve instance for a given net head could show efficiency (Y-axis) versus active power output (X-axis) or versus discharge on the X-axis.

HydroGeneratingUnit

A generating unit whose prime mover is a hydraulic turbine (e.g., Francis, Pelton, Kaplan).

HydroPowerPlant

A hydro power station which can generate or pump. When generating, the generator turbines receive water from an upper reservoir. When pumping, the pumps receive their water from a lower reservoir.

HydroPump

A synchronous motor-driven pump, typically associated with a pumped storage plant.

HydroPumpOpSchedule

The hydro pump's Operator-approved current operating schedule (or plan), typically produced with the aid of unit commitment type analyses. The unit's operating schedule status is typically given as: (0=unavailable) (1=available to startup or shutdown) (2=must pump).

HydrosphericAnalog

Analog (float) measuring a hydrospheric condition.

HydrosphericPhenomenon

A hydrospheric phenomenon.

HydroTurbine

A water driven prime mover. Typical turbine types are: Francis, Kaplan, and Pelton.

ICCPInformationMessage

This class represents the TASE.2 Information Message Object. The IdentifiedObject.name attribute must be non-null. The value of the attribute shall be used as the TASE.2 Information Reference, as specified by 60870-6-503.

ICCPProvidedPoint

The IdentifiedObject.name attribute must have a value. The name attribute shall be used as the DataValue name used for the exchange.

ICCPVCC

Indicates that the ICCP information is global in nature and normally is available to all authorized peers.

ICCPVirtualControlCentre

This contains the information that a particular actor exposes for a particular agreed upon ICCP Bilateral Table.

IdcInverterControl

n/a

IdentifiedObject

This is a root class to provide common identification for all classes needing identification and naming attributes.

IEC61968CIMVersion

IEC 61968 version number assigned to this UML model.

IEC61970CIMVersion

This is the IEC 61970 CIM version number assigned to this UML model.

IEC62325CIMVersion

IEC 62325 version number assigned to this UML model.

IECStandard

Standard published by IEC (International Electrotechnical Commission).

IEEEStandard

Standard published by IEEE (Institute of Electrical and Electronics Engineers).

IgnAngleContInverter

n/a

InadvertentAccount

An account for tracking inadvertent interchange versus time for each control area. A control area may have more than one inadvertent account in order to track inadvertent over one or more specific tie points in addition to the usual overall net inadvertent. Separate accounts would also be used to track designated time periods, such as on-peak and off-peak.

Incident

Description of a problem in the field that may be reported in a trouble ticket or come from another source. It may have to do with an outage.

IncidentHazard

Hazardous situation associated with an incident. Examples are line down, gas leak, fire, etc.

IncrementalDatasetArg

A generic model operation argument referencing an incremental change description.

IncrementalDatasetArgDescription

n/a

IncrementalHeatRateCurve

Relationship between unit incremental heat rate in (delta energy/time) per (delta active power) and unit output in active power. The IHR curve represents the slope of the HeatInputCurve. Note that the "incremental heat rate" and the "heat rate" have the same engineering units.

IndividualPnode

Individual pricing node based on Pnode.

InflowForecast

Natural water inflow to a reservoir, usually forecasted from predicted rain and snowmelt. Typically in one hour increments for up to 10 days. The forecast is given in average cubic meters per second over the time increment.

InfoQuestion

Questions and answers associated with a type of document for purposes of clarification. Questions may be predefined or ad hoc.

InspectionAnalog

Asset inspection type of analog.

InspectionDataSet

Documents the result of one inspection, for a given attribute of an asset.

InspectionDiscrete

Asset inspection type of discrete.

InstanceSet

Instance of a version of a model part. This corresponds to a payload of instance data.

InstructionClearing

Model of market clearing, relating to commitment instructions. Identifies interval.

InstructionClearingDOP

Model of market clearing, related to Dispatch Operating Point. Identifies interval.

InstructionClearingDOT

Model of market clearing, related to Dispatch Operating Target (model of anticipatory dispatch). Identifies interval.

Instructions

Provides the necessary information (on a resource basis) to capture the Startup/Shutdown instruction results. This information is relevant to the DA Market (RUC only) as well as the RT Market (HASP, Pre-dispatch, and Interval).

IntegerQuantity

Quantity with integer value and associated unit information.

InterchangeETCData

Existing Transmission Contract data for an interchange schedule.

InterchangeSchedule

Interchange schedule class to hold information for interchange schedules such as import export type, energy type, and etc.

IntermittentResourceEligibility

Indicates whether unit is eligible for treatment as a intermittent variable renewable resource.

InternalControlArea

There is one internal control area in the system, which is the single control area in the primary network company. Real time generation control affects only the internal control area.

InternalLocation

Description of location internal to a building.

InterrupterUnit

Breaker interrupter. Some interrupters have one fixed and one moving contact, some have 2 fixed contacts, some 2 moving contacts. An interrupter will have relationships with 2 bushings and those relationships may be any combination of the FixedContact and MovingContact associations.

InterrupterUnitInfo

Interrupter datasheet information.

InterTieBid

This class represents the inter tie bid.

InterTieClearing

Model of market clearing related to results at the inter-ties. Identifies interval

InterTieDispatchResponse

Response from an intertie resource acknowledging receipt of dispatch instructions.

InterTieResults

Provides the tie point specific output from the market applications. Currently, this is defined as the loop flow compensation MW value.

IntervalBlock

Time sequence of readings of the same reading type. Contained interval readings may need conversion through the application of an offset and a scalar defined in associated pending. Table 548 shows all association ends of IntervalBlock with other classes. Table 548 – Association ends of Metering::IntervalBlock with other classes Associations name mult to type description

0..* PendingCalculation 0..1 PendingCalculation Pending calculation to apply to interval reading values contained by this block (after which the resulting reading type is different than the original because it reflects the conversion result).

0..* IntervalReadings 0..* IntervalReading Interval reading contained in this block.

0..* ReadingType 0..1 ReadingType Type information for interval reading values contained in this block.

0..* MeterReading 0..1 MeterReading Meter reading containing this interval block.

IntervalReading Data captured at regular intervals of time. Interval data could be captured as incremental data, absolute data, or relative data. The source for the data is usually a tariff quantity or an engineering quantity. Data is typically captured in time-tagged, uniform, fixed-length intervals of 5 min, 10 min, 15 min, 30 min, or 60 min. Note: Interval Data is sometimes also called "Interval Data Readings" (IDR).

IntervalReading

Data captured at regular intervals of time. Interval data could be captured as incremental data, absolute data, or relative data. The source for the data is usually a tariff quantity or an engineering quantity. Data is typically captured in time-tagged, uniform, fixed-length intervals of 5 min, 10 min, 15 min, 30 min, or 60 min. Note: Interval Data is sometimes also called "Interval Data Readings" (IDR).

IntSchedAgreement

A type of agreement that provides the default method by which interchange schedules are to be integrated to obtain hourly MWh schedules for accounting.

InUseDate

Dates associated with asset 'in use' status. May have multiple in use dates for this device and a compound type allows a query to return multiple dates.

IOPoint

The class describe a measurement or control value. The purpose is to enable having attributes and associations common for measurement and control.

IOPointSource

Indicates the point source for an IO Point.

IPAccessPoint

Internet Protocol Access Point – used to represent an addressing structure is based upon an Internet Protocol (IP) address.

IrregularIntervalSchedule

The schedule has time points where the time between them varies.

IrregularTimePoint

TimePoints for a schedule where the time between the points varies.

ISOStandard

Standard published by ISO (International Organization for Standardization).

ISOUpperLayer

Is a set of configure addressing information that is required since ICCP utilizes addressing other than a TCP port.

Issuer

Person who issued the document and is responsible for its content.

Joint

Joint connects two or more cables. It includes the portion of cable under wipes, welds, or other seals.

Jumper

A short section of conductor with negligible impedance which can be manually removed and replaced if the circuit is de-energized. Note that zero-impedance branches can potentially be modelled by other equipment types.

JumperAction

Action on jumper as a switching step.

Junction

A point where one or more conducting equipments are connected with zero resistance.

LaborelecStandard

Standard published by Laborelec.

LaborItem

Labor used for work order.

LabTestDataSet

Results of testing done by a lab.

LandProperty

Information about a particular piece of (land) property such as its use. Ownership of the property may be determined through associations to Organisations and/or ErpPersons.

Landslide

A landslide, a large mass of rocks and earth that suddenly and quickly moves down the side of a mountain or hill.

LevelVsVolumeCurve

Relationship between reservoir volume and reservoir level. The volume is at the Y-axis and the reservoir level at the X-axis.

LifecycleDate

Dates for asset lifecycle state changes. May have multiple lifecycle dates for this device and a compound type allows a query to return multiple dates.

LightningStrike

A cloud-to-ground lightning strike at a particular location.

Limit

Specifies one limit value for a Measurement. A Measurement typically has several limits that are kept together by the LimitSet class. The actual meaning and use of a Limit instance (i.e., if it is an alarm or warning limit or if it is a high or low limit) is not captured in the Limit class. However the name of a Limit instance may indicate both meaning and use.

LimitDependency

A limit calculation model used to compute an operational limit based on external input such as temperature. These are intended to be shared among operational limits with the same calculation form that apply to a piece of equipment..

LimitScalingLimit

Specifies an operational limit is calculated by scaling another operational limit.

LimitSet

Specifies a set of Limits that are associated with a Measurement. A Measurement may have several LimitSets corresponding to seasonal or other changing conditions. The condition is captured in the name and description attributes. The same LimitSet may be used for several Measurements. In particular percentage limits are used this way.

Line

Contains equipment beyond a substation belonging to a power transmission line.

LinearShuntCompensator

A linear shunt compensator has banks or sections with equal admittance values.

LinearShuntCompensatorPhase

A per phase linear shunt compensator has banks or sections with equal admittance values.

LineDetail

Details on an amount line, with rounding, date and note.

LineFault

A fault that occurs on an AC line segment at some point along the length.

LoadAggregate

Aggregate loads are used to represent all or part of the real and reactive load from one or more loads in the static (power flow) data. This load is usually the aggregation of many individual load devices and the load model is an approximate representation of the aggregate response of the load devices to system disturbances. Standard aggregate load model comprised of static and/or dynamic components. A static load model represents the sensitivity of the real and reactive power consumed by the load to the amplitude and frequency of the bus voltage. A dynamic load model can be used to represent the aggregate response of the motor components of the load.

LoadAggregationPoint

A specialized class of type AggregatedNode type. Defines Load Aggregation Points.

LoadArea

The class is the root or first level in a hierarchical structure for grouping of loads for the purpose of load flow load scaling.

LoadBid

Offer to supply energy/ancillary services from a load resource (participating load reduces consumption).

LoadBreakSwitch

A mechanical switching device capable of making, carrying, and breaking currents under normal operating conditions.

LoadComposite

Combined static load and induction motor load effects. The dynamics of the motor are simplified by linearizing the induction machine equations.

LoadDistributionFactor

This class models the load distribution factors. This class should be used in one of two ways:

Use it along with the AggregatedPnode and the IndividualPnode to show the distriubtion of each individual party

Use it with Mkt_EnergyConsumer to represent the current MW/Mvar distribution within it's parnet load group.

LoadDynamics

Load whose behaviour is described by reference to a standard model or by definition of a user-defined model. A standard feature of dynamic load behaviour modelling is the ability to associate the same behaviour to multiple energy consumers by means of a single load definition. The load model is always applied to individual bus loads (energy consumers).

LoadFollowingInst

Metered SubSystem Load Following Instruction.

LoadFollowingOperatorInput

Model of load following capabilities that are entered by operators on a temporary basis. Related to Registered Resources in Metered Subsystems.

LoadGenericNonLinear

Generic non-linear dynamic (GNLD) load. This model can be used in mid-term and long-term voltage stability simulations (i.e., to study voltage collapse), as it can replace a more detailed representation of aggregate load, including induction motors, thermostatically controlled and static loads.

LoadGroup

The class is the third level in a hierarchical structure for grouping of loads for the purpose of load flow load scaling.

LoadModelPartVersion

Load a model part version.

LoadMotor

Aggregate induction motor load. This model is used to represent a fraction of an ordinary load as "induction motor load". It allows a load that is treated as an ordinary constant power in power flow analysis to be represented by an induction motor in dynamic simulation. This model is intended for representation of aggregations of many motors dispersed through a load represented at a high voltage bus but where there is no information on the characteristics of individual motors. Either a "one-cage" or "two-cage" model of the induction machine can be modelled. Magnetic saturation is not modelled. This model treats a fraction of the constant power part of a load as a motor. During initialisation, the initial power drawn by the motor is set equal to Pfrac times the constant P part of the static load. The remainder of the load is left as a static load. The reactive power demand of the motor is calculated during initialisation as a function of voltage at the load bus. This reactive power demand can be less than or greater than the constant Q component of the load. If the motor's reactive demand is greater than the constant Q component of the load, the model inserts a shunt capacitor at the terminal of the motor to bring its reactive demand down to equal the constant Q reactive load. If an induction motor load model and a static load model are both present for a load, the motor Pfrac is assumed to be subtracted from the power flow constant P load before the static load model is applied. The remainder of the load, if any, is then represented by the static load model.

LoadRatio

Representing the ratio of the load share for the associated SC.

LoadReductionPriceCurve

This is the price sensitivity that bidder expresses for allowing market load interruption. Relationship between price (Y1-axis) vs. MW (X-axis).

LoadReductionTimeCurve

This is the cureve that describes the load reduction time. Relationship between time (Y1-axis) vs. MW (X-axis).

LoadResponseCharacteristic

Models the characteristic response of the load demand due to changes in system conditions such as voltage and frequency. It is not related to demand response. If LoadResponseCharacteristic.exponentModel is True, the exponential voltage or frequency dependent models are specified and used as to calculate active and reactive power components of the load model. The equations to calculate active and reactive power components of the load model are internal to the power flow calculation, hence they use different quantities depending on the use case of the data exchange. The equations for exponential voltage dependent load model injected power are: pInjection= Pnominal* (Voltage/cim:BaseVoltage.nominalVoltage) ** cim:LoadResponseCharacteristic.pVoltageExponent qInjection= Qnominal* (Voltage/cim:BaseVoltage.nominalVoltage) ** cim:LoadResponseCharacteristic.qVoltageExponent Where: 1) * means "multiply" and ** is "raised to power of"; 2) Pnominal and Qnominal represent the active power and reactive power at nominal voltage as any load described by the voltage exponential model shall be given at nominal voltage. This means that EnergyConsumer.p and EnergyConsumer.q are at nominal voltage. 3) After power flow is solved: -pInjection and qInjection correspond to SvPowerflow.p and SvPowerflow.q respectively. - Voltage corresponds to SvVoltage.v at the TopologicalNode where the load is connected.

LoadStatic

General static load. This model represents the sensitivity of the real and reactive power consumed by the load to the amplitude and frequency of the bus voltage.

LoadUserDefined

Load whose dynamic behaviour is described by a user-defined model.

LocalReliabilityArea

Allows definition of reliability areas (e.g.. load pockets) within the ISO/RTO.

Location

The place, scene, or point of something where someone or something has been, is, and/or will be at a given moment in time. It can be defined with one or more position points (coordinates) in a given coordinate system.

LocationGrant

A grant provides a right, as defined by type, for a parcel of land. Note that the association to Location, Asset, Organisation, etc. for the Grant is inherited from Agreement, a type of Document.

LossClearing

RT only and is published on 5 minute intervals for the previous RT time interval results.

LossClearingResults

Provides the MW loss for RUC Zones, subcontrol areas, and the total loss.

LossProfile

LossProfile is associated with an EnerrgyTransaction and must be completely contained within the time frame of the EnergyProfile associated with this EnergyTransaction.

LossSensitivity

Loss sensitivity applied to a ConnectivityNode for a given time interval.

MagneticStorm

A magnetic storm, a temporary disturbance of the earth's magnetic field, induced by radiation and streams of charged particles from the sun.

Maintainer

Organisation that maintains assets.

MaintenanceDataSet

The result of a maintenance activity, a type of Procedure, for a given attribute of an asset.

MaintenanceLocation

Location where to perform maintenance work.

MaintenanceOrder

n/a

MaintenanceWorkTask

Maintenance work task. Costs associated with this are considered preventive maintenance (PM) costs.

MajorChargeGroup

A Major Charge Group is the same as Invoice Type which provides the highest level of grouping for charge types configuration. Examples: Market, FERC, RMR.

Manufacturer

Organisation that manufactures asset products.

Market

Market (e.g. Day Ahead Market, Real Time Market) with a description of the Market operation control parameters.

MarketActualEvent

This class represents the actual instance of an event.

MarketAgreement

An identification or eventually the contents of an agreement between two or more parties.

MarketCaseClearing

Market case clearing results are posted for a given settlement period.

MarketDocument

Electronic document containing the information necessary to satisfy a given business process set of requirements.

Marketer

Matches buyers and sellers, and secures transmission (and other ancillary services) needed to complete the energy transaction.

MarketEvaluationPoint

The identification of an entity where energy products are measured or computed.

MarketFactors

Aggregation of market information relative for a specific time interval.

MarketInvoice

MarketInvoiceLineItem

An individual line item on an invoice.

MarketLedger

In accounting transactions, a ledger is a book containing accounts to which debits and credits are posted from journals, where transactions are initially recorded. Journal entries are periodically posted to the ledger. Ledger actual represents actual amounts by account within ledger within company or within business area. Actual amounts may be generated in a source application and then loaded to a specific ledger within the enterprise general ledger or budget application.

MarketLedgerEntry

Details of an individual entry in a ledger, which was posted from a journal on the posted date.

MarketObjectStatus

The condition or position of an object with regard to its standing.

MarketParticipant

An identification of a party acting in a electricity market business process. This class is used to identify organizations that can participate in market management and/or market operations.

MarketPerson

General purpose information for name and other information to contact people.

MarketPlan

This class identifies a set of planned markets.

MarketProduct

A product traded by an RTO (e.g. energy, 10 minute spinning reserve). Ancillary service product examples include: Regulation, Regulation Up, Regulation Down, Spinning Reserve, Non-Spinning Reserve, etc.

MarketQualificationRequirement

Certain skills are required and shall be certified in order for a person (typically a member of a crew) to be qualified to work on types of equipment.

MarketRegion

A specialized class of AggregatedNode type. Defines the MarketRegions. Regions could be system Market Regions, Energy Regions or Ancillary Service Regions.

MarketRegionResults

Provides all Region Ancillary Service results for the DA and RT markets. The specific data is commodity type (Regulation Up, Regulation Down, Spinning Reserve, Non-spinning Reserve, or Total Up reserves) based for the cleared MW, cleared price, and total capacity required for the region.

MarketResults

This class holds elements that are single values for the entire market time horizon. That is, for the Day Ahead market, there is 1 value for each element, not hourly based. Is a summary of the market run.

MarketRole

The external intended behavior played by a party within the electricity market.

MarketRun

This class represents an actual instance of a planned market. For example, a Day Ahead market opens with the Bid Submission, ends with the closing of the Bid Submission. The market run represent the whole process. MarketRuns can be defined for markets such as Day Ahead Market, Real Time Market, Hour Ahead Market, Week Ahead Market, etc.

MarketScheduledEvent

Signifies an event to trigger one or more activities, such as reading a meter, recalculating a bill, requesting work, when generating units shall be scheduled for maintenance, when a transformer is scheduled to be refurbished, etc.

MarketSkill

Proficiency level of a craft, which is required to operate or maintain a particular type of asset and/or perform certain types of work.

MarketStatement

A statement is a roll up of statement line items. Each statement along with its line items provide the details of specific charges at any given time. Used by Billing and Settlement.

MarketStatementLineItem

An individual line item on an ISO settlement statement.

MaterialItem

The physical consumable supply used for work and other purposes. It includes items such as nuts, bolts, brackets, glue, etc.

MaxStartUpCostCurve

The maximum Startup costs and time as a function of down time. Relationship between unit startup cost (Y1-axis) vs. unit elapsed down time (X-axis). This is used to validate the information provided in the Bid.

Measurement

A Measurement represents any measured, calculated or non-measured non-calculated quantity. Any piece of equipment may contain Measurements, e.g. a substation may have temperature measurements and door open indications, a transformer may have oil temperature and tank pressure measurements, a bay may contain a number of power flow measurements and a Breaker may contain a switch status measurement. The PSR - Measurement association is intended to capture this use of Measurement and is included in the naming hierarchy based on EquipmentContainer. The naming hierarchy typically has Measurements as leaves, e.g. Substation-VoltageLevel-Bay-Switch-Measurement. Some Measurements represent quantities related to a particular sensor location in the network, e.g. a voltage transformer (VT) or potential transformer (PT) at a busbar or a current transformer (CT) at the bar between a breaker and an isolator. The sensing position is not captured in the PSR - Measurement association. Instead it is captured by the Measurement - Terminal association that is used to define the sensing location in the network topology. The location is defined by the connection of the Terminal to ConductingEquipment. If both a Terminal and PSR are associated, and the PSR is of type ConductingEquipment, the associated Terminal should belong to that ConductingEquipment instance. When the sensor location is needed both Measurement-PSR and Measurement-Terminal are used. The Measurement-Terminal association is never used alone.

MeasurementAction

Measurement taken as a switching step.

MeasurementCalculator

Result of a calculation of one or more measurement.

MeasurementCalculatorInput

Input to measurement calculation. Support Analog, Discrete and Accumulator.

MeasurementValue

The current state for a measurement. A state value is an instance of a measurement from a specific source. Measurements can be associated with many state values, each representing a different source for the measurement.

MeasurementValueQuality

Measurement quality flags. Bits 0-10 are defined for substation automation in IEC 61850-7-3. Bits 11-15 are reserved for future expansion by that document. Bits 16-31 are reserved for EMS applications.

MeasurementValueSource

MeasurementValueSource describes the alternative sources updating a MeasurementValue. User conventions for how to use the MeasurementValueSource attributes are defined in IEC 61970-301.

MechanicalLoadDynamics

Mechanical load function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

MechanicalLoadUserDefined

Mechanical load function block whose dynamic behaviour is described by a user-defined model.

MechLoad1

Mechanical load model type 1.

Medium

A substance that either (1) provides the means of transmission of a force or effect, such as hydraulic fluid, or (2) is used for a surrounding or enveloping substance, such as oil in a transformer or circuit breaker.

MerchantAccount

The operating account controlled by merchant agreement, against which the vendor may vend tokens or receipt payments. Transactions via vendor shift debit the account and bank deposits via bank statement credit the account.

MerchantAgreement

A formal controlling contractual agreement between supplier and merchant, in terms of which the merchant is authorised to vend tokens and receipt payments on behalf of the supplier. The merchant is accountable to the supplier for revenue collected at point of sale.

Meter

Physical asset that performs the metering role of the usage point. Used for measuring consumption and detection of events.

MeteredSubSystem

A metered subsystem.

MeterMultiplier

Multiplier applied at the meter.

MeterReading

Set of values obtained from the meter.

MeterReadSchedule

n/a

MeterWorkTask

Work task involving meters.

MetrologyRequirement

A specification of the metering requirements for a particular point within a network.

MiscCostItem

Various cost items that are not associated with compatible units. Examples include rental equipment, labor, materials, contractor costs, permits - anything not covered in a CU.

MitigatedBid

Mitigated bid results posted for a given settlement period.

MitigatedBidClearing

Model of market power mitigation through reference or mitigated bids. Interval based.

MitigatedBidSegment

Model of mitigated bid. Indicates segment of piece-wise linear bid, that has been mitigated.

MktACLineSegment

Subclass of IEC 61970:Wires:ACLineSegment.

MktActivityRecord

Subclass of IEC61968: Common:ActivityRecord.

MktAnalogLimit

Subclass of IEC 61970:Meas:AnalogLimit.

MktAnalogLimitSet

Subclass of IEC 61970:Meas:AnalogLimitSet.

MktCombinedCyclePlant

Subclass of Production: CombinedCyclePlant from IEC 61970 package. A set of combustion turbines and steam turbines where the exhaust heat from the combustion turbines is recovered to make steam for the steam turbines, resulting in greater overall plant efficiency.

MktConductingEquipment

Subclass of IEC 61970:Core:ConductingEquipment.

MktConnectivityNode

Subclass of IEC61970:Topology:ConnectivityNode.

MktContingency

Subclass of IEC 61970:Contingency.

MktControlArea

Market subclass of IEC 61970:ControlArea.

MktGeneratingUnit

Subclass of IEC61970:Production:GeneratingUnit.

MktHeatRateCurve

Subclass of IEC 61970: Generation: Production:HeatRateCurve.

MktLine

Subclass for IEC61970:Wires:Line.

MktMeasurement

Subclass of IEC61970:Meas:Measurement.

MktPowerTransformer

Subclass of IEC61970:Wires:PowerTransformer.

MktPSRType

The type of a power system resource.

MktSeriesCompensator

Subclass of IEC 61970:Wires:SeriesCompensator.

MktShuntCompensator

Subclass of IEC 61970:Wires:ShuntCompensator.

MktSwitch

Subclass of IEC 61970:Wires:Switch.

MktTapChanger

Subclass of IEC 61970:Wires:TapChanger.

MktTerminal

Subclass of IEC61970:Core:Terminal.

MktThermalGeneratingUnit

Subclass of ThermalGeneratingUnit from Production Package in IEC 61970.

MktUserAttribute

Subclass of IEC61968:Domain2:UserAttribute.

ModelAuthority

A Modeling Authority is an entity responsible for supplying and maintaining the data defining a specific set of objects in a network model.

ModelAuthoritySet

A Modeling Authority Set is a group of objects in a network model where the data is supplied and maintained by the same Modeling Authority. This class is typically not included in instance data exchange as this information is tracked by other mechanisms in the exchange.

ModelFrameType

Examples would be "Boundary" or "Region" type of frame.

ModelOperation

An operation performed on models.

ModelOperationArg

Describes the role a dataset plays in a model operation. The role is applicable only in the context of a single operation.

ModelOperationArgDescription

The type of custom operation dataset role for an operation description.

ModelOperationDescription

The type of model operation. This class is referenced by model operations and defines the kind of operation.

ModelOperationSequence

A concrete sequence of operations. For example, this may be used to describe a specific audit trail, a script or other specific set of actions on specific datasets.

ModelPartSpecification

The type of model. For example, state estimator, planning, planning dynamics, short circuit, or real-time dynamics etc. The model must conform to a profile.

ModelPartVersion

This is a version of a part of a model. New instances of this class with new identity are instantiated upon changes to the content of this class or changes to the associated data set. Instances of this class are considered immutable. The case audit trail can reference this immutable data to exactly reproduce a case.

ModelToBeDeleted

A Model is a collection of Datasets.

MonthDayInterval

Interval between two times specified as month and day.

MPMClearing

Model of results of Market Power tests, and possible mitigation. Interval based.

MPMResourceStatus

Model of results of Market Power tests, gives status of resource for the associated interval.

MPMTestCategory

Provides a reference to the Market Power Mitigation test identifiers and methods for the results of the DA or RT markets. Specific data is the test identifier (Price, Conduct, or Impact) and the test method (System MPM, Local MPM, Alternate System MPM, or Alternate Local MPM).

MPMTestResults

Provides the outcome and margin percent (as appropriate) result data for the MPM tests. There are relationships to Zone for Designated Congestion Area Tests, CurveSchedData for bid segment tests, to the SubControlArea for the system wide level tests, and Pnodes for the LMPM impact tests.

MPMTestThreshold

Market Power Mitigation (MPM) test thresholds for resource as well as designated congestion areas (DCAs).

MSSAggregation

Metered Sub-System aggregation of MSS Zones.

MSSZone

Model to define a zone within a Metered Sub System.

MutualCoupling

This class represents the zero sequence line mutual coupling.

MWLimitSchedule

Maximum MW and optionally Minimum MW (Y1 and Y2, respectively).

Name

The Name class provides the means to define any number of human readable names for an object. A name is not to be used for defining inter-object relationships. For inter-object relationships instead use the object identification 'mRID'.

NameType

Type of name. Possible values for attribute 'name' are implementation dependent but standard profiles may specify types. An enterprise may have multiple IT systems each having its own local name for the same object, e.g. a planning system may have different names from an EMS. An object may also have different names within the same IT system, e.g. localName as defined in CIM version 14. The definition from CIM14 is: The localName is a human readable name of the object. It is a free text name local to a node in a naming hierarchy similar to a file directory structure. A power system related naming hierarchy may be: Substation, VoltageLevel, Equipment etc. Children of the same parent in such a hierarchy have names that typically are unique among them.

NameTypeAuthority

Authority responsible for creation and management of names of a given type; typically an organization or an enterprise system.

NetworkBoundary

A framework part that is a boundary between 2 frames.

NetworkFrame

A region isolated by boundaries.

NetworkModelCaseDefinition

Instructions to build a network model case, including when appropriate the results.

NetworkModelProject

A grouping of network model change descriptions. Primarily used to organize the phases of an overall project.

NetworkModelProject2

n/a

NetworkModelProjectChange

Network model project change described by versions of an associated change set. Has persistent identity over multiple versions of the associated change set.

NetworkModelProjectChangeVersion

Describes the status and the planned implementation of the associated change set into the as-built model. New instances of this class with new identity are instantiated upon changes to the content of this class or changes to the associated change set. Instances of this class are considered immutable. The case audit trail can reference this immutable data to exactly reproduce a case.

NetworkModelProjectCollection

n/a

NetworkModelProjectComponent

Abstract class for both a network model project and network model change.

NetworkModelProjectComponent2

n/a

NetworkModelProjectDocument

n/a

NetworkModelProjectRelationship

A relationship that assists humans and software building cases by assembling project changes in the correct sequence. This class may be specialized to create specific types of relationships.

NetworkModelProjectStage

n/a

NetworkModelProjectState

A network model project version state. States are agreed upon by the exchange community. Examples are "approved", "proposed", "withdrawn", "committed" etc.

NodeConstraintTerm

To be used only to constrain a quantity that cannot be associated with a terminal. For example, a registered generating unit that is not electrically connected to the network.

NoLoadTest

No-load test results determine core admittance parameters. They include exciting current and core loss measurements from applying voltage to one winding. The excitation may be positive sequence or zero sequence. The test may be repeated at different voltages to measure saturation.

NonConformLoad

NonConformLoad represents loads that do not follow a daily load change pattern and whose changes are not correlated with the daily load change pattern.

NonConformLoadGroup

Loads that do not follow a daily and seasonal load variation pattern.

NonConformLoadSchedule

An active power (Y1-axis) and reactive power (Y2-axis) schedule (curves) versus time (X-axis) for non-conforming loads, e.g., large industrial load or power station service (where modelled).

NonlinearShuntCompensator

A non linear shunt compensator has bank or section admittance values that differ. The attributes g, b, g0 and b0 of the associated NonlinearShuntCompensatorPoint describe the total conductance and admittance of a NonlinearShuntCompensatorPoint at a section number specified by NonlinearShuntCompensatorPoint.sectionNumber.

NonlinearShuntCompensatorPhase

A per phase non linear shunt compensator has bank or section admittance values that differ. The attributes g and b of the associated NonlinearShuntCompensatorPhasePoint describe the total conductance and admittance of a NonlinearShuntCompensatorPhasePoint at a section number specified by NonlinearShuntCompensatorPhasePoint.sectionNumber.

NonlinearShuntCompensatorPhasePoint

A per phase non linear shunt compensator bank or section admittance value. The number of NonlinearShuntCompenstorPhasePoint instances associated with a NonlinearShuntCompensatorPhase shall be equal to ShuntCompensatorPhase.maximumSections. ShuntCompensator.sections shall only be set to one of the NonlinearShuntCompenstorPhasePoint.sectionNumber. There is no interpolation between NonlinearShuntCompenstorPhasePoint-s.

NonlinearShuntCompensatorPoint

A non linear shunt compensator bank or section admittance value. The number of NonlinearShuntCompenstorPoint instances associated with a NonlinearShuntCompensator shall be equal to ShuntCompensator.maximumSections. ShuntCompensator.sections shall only be set to one of the NonlinearShuntCompenstorPoint.sectionNumber. There is no interpolation between NonlinearShuntCompenstorPoint-s.

NonStandardItem

This document provides information for non-standard items like customer contributions (e.g., customer digs trench), vouchers (e.g., credit), and contractor bids.

NotificationTimeCurve

Notification time curve as a function of down time. Relationship between crew notification time (Y1-axis) and unit startup time (Y2-axis) vs. unit elapsed down time (X-axis).

NuclearGeneratingUnit

A nuclear generating unit.

ObjectCreation

An object is to be created in the context.

ObjectDeletion

An object is to be deleted in the context.

ObjectModification

The object already exists and is to be modified.

ObjectReverseModification

Used to specify precondition properties for a preconditioned update.

Observation

Observed (actual non-forecast) values sets and/or phenomena characteristics.

OilAnalysisFluidAnalog

Asset oil analysis fluid test type of analog. .

OilAnalysisFluidDiscrete

Asset oil analysis fluid type of discrete.

OilAnalysisGasAnalog

Asset oil analysis gas type of analog.

OilAnalysisMetalsAnalog

Asset oil analysis metals type of analog.

OilAnalysisMoistureAnalog

Asset oil analysis moisture type of analog.

OilAnalysisPaperAnalog

Asset oil inspection paper type of analog.

OilAnalysisParticleAnalog

Asset oil analysis particle type of analog.

OilAnalysisParticleDiscrete

Asset oil analysis particle type of discrete.

OilAnalysisPCBAnalog

Asset oil analysis PCB type of analog.

OilAnalysisPCBDiscrete

Asset oil analysis PCB type of discrete.

OilPrice

Price of oil in monetary units.

OilSpecimen

n/a

OldCrew

A crew is a group of people with specific skills, tools, and vehicles.

OldPerson

General purpose information for name and other information to contact people.

OldSwitchInfo

Properties of switch assets.

OldTransformerEndInfo

n/a

OldTransformerTankInfo

n/a

OldWorkTask

A set of tasks is required to implement a design.

OneCallRequest

A request for other utilities to mark their underground facilities prior to commencement of construction and/or maintenance.

OpenAccessProduct

Contracts for services offered commercially.

OpenCircuitTest

Open-circuit test results verify winding turn ratios and phase shifts. They include induced voltage and phase shift measurements on open-circuit windings, with voltage applied to the energised end. For three-phase windings, the excitation can be a positive sequence (the default) or a zero sequence.

OpenTieSchedule

Result of bid validation against conditions that may exist on an interchange that becomes disconnected or is heavily discounted with respect the MW flow.

This schedule is assocated with the hourly parameters in a resource bid.

OperatingMechanism

Breaker mechanism.

OperatingMechanismInfo

Breaker operating mechanism datasheet information.

OperatingParticipant

An operator of multiple power system resource objects. Note multple operating participants may operate the same power system resource object. This can be used for modeling jointly owned units where each owner operates as a contractual share.

OperatingShare

Specifies the operations contract relationship between a power system resource and a contract participant.

Operation

n/a

OperationalLimit

A value and normal value associated with a specific kind of limit. The sub class value and normalValue attributes vary inversely to the associated OperationalLimitType.acceptableDuration (acceptableDuration for short). If a particular piece of equipment has multiple operational limits of the same kind (apparent power, current, etc.), the limit with the greatest acceptableDuration shall have the smallest limit value and the limit with the smallest acceptableDuration shall have the largest limit value. Note: A large current can only be allowed to flow through a piece of equipment for a short duration without causing damage, but a lesser current can be allowed to flow for a longer duration.

OperationalLimitSet

A set of limits associated with equipment. Sets of limits might apply to a specific temperature, or season for example. A set of limits may contain different severities of limit levels that would apply to the same equipment. The set may contain limits of different types such as apparent power and current limits or high and low voltage limits that are logically applied together as a set.

OperationalLimitType

The operational meaning of a category of limits.

OperationalRestriction

A document that can be associated with equipment to describe any sort of restrictions compared with the original manufacturer's specification or with the usual operational practice e.g. temporary maximum loadings, maximum switching current, do not operate if bus couplers are open, etc. In the UK, for example, if a breaker or switch ever mal-operates, this is reported centrally and utilities use their asset systems to identify all the installed devices of the same manufacturer's type. They then apply operational restrictions in the operational systems to warn operators of potential problems. After appropriate inspection and maintenance, the operational restrictions may be removed.

OperationalTag

Operational tag placed on a power system resource or asset in the context of switching plan execution or other work in the field.

OperationalUpdatedRating

Lowered capability because of deterioration or inadequacy (sometimes referred to as derating or partial outage) or other kind of operational rating change.

OperationPersonRole

Person role in the context of utility operations.

OperationsSafetySupervisor

Operator with responsibility that the work in high voltage installation is executed in a safe manner and according to safety regulation.

OperatonalLimitTypeScaling

One operational limit type scales values of another operational limit type when under the same operational limit set. This applies to any operational limit assigned to the target operational limit type and without other limit dependency models.

Operator

Control room operator.

Organisation

Organisation that might have roles as utility, contractor, supplier, manufacturer, customer, etc.

OrganisationRole

Identifies a way in which an organisation may participate in the utility enterprise (e.g., customer, manufacturer, etc).

OrgOrgRole

Roles played between Organisations and other Organisations. This includes role ups for ogranisations, cost centers, profit centers, regulatory reporting, etc. Note that the parent and child relationship is indicated by the name on each end of the association.

OrgPnodeAllocation

This class models the allocation between asset owners and pricing nodes.

OrgResOwnership

This class model the ownership percent and type of ownership between resource and organisation.

Outage

Document describing details of an active or planned outage in a part of the electrical network. A non-planned outage may be created upon: - a breaker trip, - a fault indicator status change, - a meter event indicating customer outage, - a reception of one or more customer trouble calls, or - an operator command, reflecting information obtained from the field crew. Outage restoration may be performed using a switching plan which complements the outage information with detailed switching activities, including the relationship to the crew and work. A planned outage may be created upon: - a request for service, maintenance or construction work in the field, or - an operator-defined outage for what-if/contingency network analysis.

OutageArea

This defines the area covered by the Outage.

OutageOrder

Transmits an outage plan to a crew in order for the planned outage to be executed.

OutagePlan

Document containing the definition of planned outages of equipment and/or usage points. It will reference switching plans that are used to execute the planned outage.

OverexcitationLimiterDynamics

Overexcitation limiter function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

OverexcitationLimiterUserDefined

Overexcitation limiter system function block whose dynamic behaviour is described by a user-defined model.

OverexcLim2

Different from LimIEEEOEL, LimOEL2 has a fixed pickup threshold and reduces the excitation set-point by means of a non-windup integral regulator. Irated is the rated machine excitation current (calculated from nameplate conditions: V_nom, P_nom, CosPhi_nom).

OverexcLimIEEE

The over excitation limiter model is intended to represent the significant features of OELs necessary for some large-scale system studies. It is the result of a pragmatic approach to obtain a model that can be widely applied with attainable data from generator owners. An attempt to include all variations in the functionality of OELs and duplicate how they interact with the rest of the excitation systems would likely result in a level of application insufficient for the studies for which they are intended. Reference: IEEE OEL 421.5-2005, 9.

OverexcLimX1

Field voltage over excitation limiter.

OverexcLimX2

Field voltage or current overexcitation limiter designed to protect the generator field of an AC machine with automatic excitation control from overheating due to prolonged overexcitation.

OverheadCost

Overhead cost applied to work order.

OverheadWireInfo

Overhead wire data.

Ownership

Ownership of e.g. asset.

PackageDependenciesCIMVersion

The version of dependencies description among top level subpackages of the combined CIM model. This is not the same as the combined packages version.

PanDemandResponse

PAN control used to issue action/command to PAN devices during a demand response/load control event.

PanDisplay

PAN action/command used to issue the displaying of text messages on PAN devices.

PanPricing

PAN action/command used to issue pricing information to a PAN device.

PanPricingDetail

Detail for a single price command/action.

ParentOrganization

n/a

Participation

Participation level of a given Pnode in a given AggregatePnode.

PassThroughBill

Pass Through Bill is used for: 1)Two sided charge transactions with or without ISO involvement 2) Specific direct charges or payments that are calculated outside or provided directly to settlements 3) Specific charge bill determinants that are externally supplied and used in charge calculations

Pcontrol

n/a

PendingCalculation

When present, a scalar conversion that needs to be applied to every IntervalReading.value contained in IntervalBlock. This conversion results in a new associated ReadingType, reflecting the true dimensions of IntervalReading values after the conversion.

PenstockLossCurve

Relationship between penstock head loss (in meters) and total discharge through the penstock (in cubic meters per second). One or more turbines may be connected to the same penstock.

Period

An identification of a time interval that may have a given resolution.

PeriodicStatisticalCalculation

Description of period for which calculation is performed.

PerLengthDCLineParameter

Common type for per-length electrical catalogues describing DC line parameters.

PerLengthImpedance

Common type for per-length impedance electrical catalogues.

PerLengthLineParameter

Common type for per-length electrical catalogues describing line parameters.

PerLengthPhaseImpedance

Impedance and admittance parameters per unit length for n-wire unbalanced lines, in matrix form.

PerLengthSequenceImpedance

Sequence impedance and admittance parameters per unit length, for transposed lines of 1, 2, or 3 phases. For 1-phase lines, define x=x0=xself. For 2-phase lines, define x=xs-xm and x0=xs+xm.

Person

General purpose information for name and other information to contact people.

PersonOrganisationRole

Role an organisation plays with respect to persons.

PersonPropertyRole

The role of a person relative to a given piece of property. Examples of roles include: owner, renter, contractor, etc.

PersonRole

n/a

PetersenCoil

A variable impedance device normally used to offset line charging during single line faults in an ungrounded section of network.

PFmode

n/a

PFVArControllerType1Dynamics

Power factor or VAr controller type 1 function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

PFVArControllerType1UserDefined

Power factor or VAr controller type 1 function block whose dynamic behaviour is described by a user-defined model.

PFVArControllerType2Dynamics

Power factor or VAr controller type 2 function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

PFVArControllerType2UserDefined

Power factor or VAr controller type 2 function block whose dynamic behaviour is described by a user-defined model.

PFVArType1IEEEPFController

IEEE PF controller type 1 which operates by moving the voltage reference directly. Reference: IEEE 421.5-2005, 11.2.

PFVArType1IEEEVArController

IEEE VAR controller type 1 which operates by moving the voltage reference directly. Reference: IEEE 421.5-2005, 11.3.

PFVArType2Common1

Power factor / reactive power regulator. This model represents the power factor or reactive power controller such as the Basler SCP-250. The controller measures power factor or reactive power (PU on generator rated power) and compares it with the operator's set point. [Footnote: Basler SCP-250 is an example of a suitable product available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of this product.]

PFVArType2IEEEPFController

IEEE PF controller type 2 which is a summing point type controller making up the outside loop of a two-loop system. This controller is implemented as a slow PI type controller. The voltage regulator forms the inner loop and is implemented as a fast controller. Reference: IEEE 421.5-2005, 11.4.

PFVArType2IEEEVArController

IEEE VAR controller type 2 which is a summing point type controller. It makes up the outside loop of a two-loop system. This controller is implemented as a slow PI type controller, and the voltage regulator forms the inner loop and is implemented as a fast controller. Reference: IEEE 421.5-2005, 11.5.

PhaseImpedanceData

Impedance and conductance matrix element values. The diagonal elements are described by the elements having the same toPhase and fromPhase value and the off diagonal elements have different toPhase and fromPhase values. The matrix can also be stored in symmetric lower triangular format using the row and column attributes, which map to ACLineSegmentPhase.sequenceNumber.

PhaseTapChanger

A transformer phase shifting tap model that controls the phase angle difference across the power transformer and potentially the active power flow through the power transformer. This phase tap model may also impact the voltage magnitude.

PhaseTapChangerAsymmetrical

Describes the tap model for an asymmetrical phase shifting transformer in which the difference voltage vector adds to the in-phase winding. The out-of-phase winding is the transformer end where the tap changer is located. The angle between the in-phase and out-of-phase windings is named the winding connection angle. The phase shift depends on both the difference voltage magnitude and the winding connection angle.

PhaseTapChangerLinear

Describes a tap changer with a linear relation between the tap step and the phase angle difference across the transformer. This is a mathematical model that is an approximation of a real phase tap changer. The phase angle is computed as stepPhaseShiftIncrement times the tap position. The voltage magnitude of both sides is the same.

PhaseTapChangerNonLinear

The non-linear phase tap changer describes the non-linear behaviour of a phase tap changer. This is a base class for the symmetrical and asymmetrical phase tap changer models. The details of these models can be found in IEC 61970-301.

PhaseTapChangerSymmetrical

Describes a symmetrical phase shifting transformer tap model in which the voltage magnitude of both sides is the same. The difference voltage magnitude is the base in an equal-sided triangle where the sides corresponds to the primary and secondary voltages. The phase angle difference corresponds to the top angle and can be expressed as twice the arctangent of half the total difference voltage.

PhaseTapChangerTable

Describes a tabular curve for how the phase angle difference and impedance varies with the tap step.

PhaseTapChangerTablePoint

Describes each tap step in the phase tap changer tabular curve.

PhaseTapChangerTabular

Describes a tap changer with a table defining the relation between the tap step and the phase angle difference across the transformer.

PhenomenonClassification

A pre-defined phenomenon classification as defined by a particular authority.

PhotoVoltaicUnit

A photovoltaic device or an aggregation of such devices.

PinBranchGroup

Value associated with branch group is used as compare.

PinEquipment

Value associated with Equipment is used as compare.

PinGate

An output from one gate represent an input to another gate.

PinMeasurement

Gate input pin that is associated with a Measurement or a calculation of Measurement.

PinTerminal

Value associated with Terminal is used as compare.

PlannedMarket

Represent a planned market. For example a planned DA/HA/RT market.

PlannedMarketEvent

This class represents planned events. Used to model the various planned events in a market (closing time, clearing time, etc.)

PlannedOutage

n/a

PlannedOutageNotification

This class will be used to generate call ahead lists for customers who will be affected by a planned outage.

Plant

A Plant is a collection of equipment for purposes of generation.

Pnode

A pricing node is directly associated with a connectivity node. It is a pricing location for which market participants submit their bids, offers, buy/sell CRRs, and settle.

PnodeClearing

Pricing node clearing results posted for a given settlement period.

PnodeDistributionFactor

This class allows SC to input different distribution factors for pricing node.

PnodeResults

Provides the total price, the cost component, the loss component, and the congestion component for Pnodes for the forward and real time markets. There are several prices produced based on the run type (MPM, RUC, Pricing, or Scheduling/Dispatch).

Point

An identification of a set of values beeing adressed within a specific interval of time.

PointOfSale

Logical point where transactions take place with operational interaction between cashier and the payment system; in certain cases the point of sale interacts directly with the end customer, in which case the cashier might not be a real person: for example a self-service kiosk or over the internet.

Pole

Pole asset.

PositionPoint

Set of spatial coordinates that determine a point, defined in the coordinate system specified in 'Location.CoordinateSystem'. Use a single position point instance to describe a point-oriented location. Use a sequence of position points to describe a line-oriented object (physical location of non-point oriented objects like cables or lines), or area of an object (like a substation or a geographical zone - in this case, have first and last position point with the same values).

PostLineSensor

A sensor used mainly in overhead distribution networks as the source of both current and voltage measurements.

PotentialTransformer

Instrument transformer (also known as Voltage Transformer) used to measure electrical qualities of the circuit that is being protected and/or monitored. Typically used as voltage transducer for the purpose of metering, protection, or sometimes auxiliary substation supply. A typical secondary voltage rating would be 120V.

PotentialTransformerInfo

Properties of potential transformer asset.

PowerCutZone

An area or zone of the power system which is used for load shedding purposes.

PowerElectronicsConnection

A connection to the AC network for energy production or consumption that uses power electronics rather than rotating machines.

PowerElectronicsConnectionPhase

A single phase of a power electronics connection.

PowerElectronicsUnit

A generating unit or battery or aggregation that connects to the AC network using power electronics rather than rotating machines.

PowerElectronicsWindUnit

A wind generating unit that connects to the AC network with power electronics rather than rotating machines or an aggregation of such units.

PowerQualityPricing

Pricing can be based on power quality.

PowerSystemProjectLifecycleToBeDeleted

Represent the base lifecycle of a functional model change that could be a construction of new elements.

PowerSystemResource

A power system resource (PSR) can be an item of equipment such as a switch, an equipment container containing many individual items of equipment such as a substation, or an organisational entity such as sub-control area. Power system resources can have measurements associated.

PowerSystemStabilizerDynamics

Power system stabilizer function block whose behaviour is described by reference to a standard model or by definition of a user-defined model.

PowerSystemStabilizerUserDefined

Power system stabilizer function block whose dynamic behaviour is described by a user-defined model.

PowerTransformer

An electrical device consisting of two or more coupled windings, with or without a magnetic core, for introducing mutual coupling between electric circuits. Transformers can be used to control voltage and phase shift (active power flow). A power transformer may be composed of separate transformer tanks that need not be identical. A power transformer can be modelled with or without tanks and is intended for use in both balanced and unbalanced representations. A power transformer typically has two terminals, but may have one (grounding), three or more terminals. The inherited association ConductingEquipment.BaseVoltage should not be used. The association from TransformerEnd to BaseVoltage should be used instead.

PowerTransformerEnd

A PowerTransformerEnd is associated with each Terminal of a PowerTransformer. The impedance values r, r0, x, and x0 of a PowerTransformerEnd represents a star equivalent as follows. 1) for a two Terminal PowerTransformer the high voltage (TransformerEnd.endNumber=1) PowerTransformerEnd has non zero values on r, r0, x, and x0 while the low voltage (TransformerEnd.endNumber=2) PowerTransformerEnd has zero values for r, r0, x, and x0. Parameters are always provided, even if the PowerTransformerEnds have the same rated voltage. In this case, the parameters are provided at the PowerTransformerEnd which has TransformerEnd.endNumber equal to 1. 2) for a three Terminal PowerTransformer the three PowerTransformerEnds represent a star equivalent with each leg in the star represented by r, r0, x, and x0 values. 3) For a three Terminal transformer each PowerTransformerEnd shall have g, g0, b and b0 values corresponding to the no load losses distributed on the three PowerTransformerEnds. The total no load loss shunt impedances may also be placed at one of the PowerTransformerEnds, preferably the end numbered 1, having the shunt values on end 1. This is the preferred way. 4) for a PowerTransformer with more than three Terminals the PowerTransformerEnd impedance values cannot be used. Instead use the TransformerMeshImpedance or split the transformer into multiple PowerTransformers. Each PowerTransformerEnd must be contained by a PowerTransformer. Because a PowerTransformerEnd (or any other object) can not be contained by more than one parent, a PowerTransformerEnd can not have an association to an EquipmentContainer (Substation, VoltageLevel, etc).

PowerTransformerInfo

Set of power transformer data, from an equipment library.

Price

The cost corresponding to a specific measure and expressed in a currency.

PriceDescriptor

The price of a Commodity during a given time interval may change over time. For example, a price may be forecasted a year ahead, a month ahead, a day ahead, an hour ahead, and in real time; this is defined using the MarketType. Additionally a price may have one or more components. For example, a locational marginal energy price may be the arithmetic sum of the system price, the congestion price, and the loss price. The priceType enumeration is used determine if the price is the complete price (priceType="total") or one of potentially many constituent components.

PricingStructure

Grouping of pricing components and prices used in the creation of customer charges and the eligibility criteria under which these terms may be offered to a customer. The reasons for grouping include state, customer classification, site characteristics, classification (i.e. fee price structure, deposit price structure, electric service price structure, etc.) and accounting requirements.

PrimeMover

The machine used to develop mechanical energy used to drive a generator.

Priority

Priority definition.

Procedure

Documented procedure for various types of work or work tasks on assets.

ProcedureDataSet

A data set recorded each time a procedure is executed. Observed results are captured in associated measurement values and/or values for properties relevant to the type of procedure performed.

Process

The formal specification of a set of business transactions having the same business goal.

ProductAssetModel

Asset model by a specific manufacturer.

ProductBid

Component of a bid that pertains to one market product.

Profile

A profile is a simpler curve type.

ProfileData

Data for profile.

Project

A collection of related work. For construction projects and maintenance projects, multiple phases may be performed.

ProjectAlternative

Project B is an alternative to project A. Project A is the primary alternative. Multiple project alternatives should not be selected into a single network study case.

ProjectDependency

Project A change sets should be applied before Project B during case creation.

PropertyOrganisationRole

Role an organisation plays with respect to property (for example, the organisation may be the owner, renter, occupier, taxiing authority, etc.).

PropertyUnit

Unit of property for reporting purposes.

ProportionalDistributionComponent

n/a

ProprietaryParameterDynamics

Supports definition of one or more parameters of several different datatypes for use by proprietary user-defined models. This class does not inherit from IdentifiedObject since it is not intended that a single instance of it be referenced by more than one proprietary user-defined model instance.

ProtectedSwitch

A ProtectedSwitch is a switching device that can be operated by ProtectionEquipment.

ProtectionEquipment

An electrical device designed to respond to input conditions in a prescribed manner and after specified conditions are met to cause contact operation or similar abrupt change in associated electric control circuits, or simply to display the detected condition. Protection equipment is associated with conducting equipment and usually operate circuit breakers.

ProtectionEquipmentInfo

Properties of protection equipment asset.

ProtectiveAction

A protective action for supporting the integrity of the power system.

ProtectiveActionAdjustment

Protective actions on non-switching equipment. The operating condition is adjusted.

ProtectiveActionCollection

A collection of protective actions to protect the integrity of the power system.

ProtectiveActionEquipment

Protective action to put an Equipment in-service/out-of-service.

ProtectiveActionRegulation

Protective action to change regulation to Equipment.

ProvidedBilateralPoint

Allows declaration of ICCP points to be provided through a Bilateral Table agreement.

PSREvent

Event recording the change in operational status of a power system resource (PSR); may be for an event that has already occurred or for a planned activity.

PSRType

Classifying instances of the same class, e.g. overhead and underground ACLineSegments. This classification mechanism is intended to provide flexibility outside the scope of this document, i.e. provide customisation that is non standard.

Pss1

Italian PSS with three inputs (speed, frequency, power).

Pss1A

Single input power system stabilizer. It is a modified version in order to allow representation of various vendors' implementations on PSS type 1A.

Pss2B

Modified IEEE PSS2B. Extra lead/lag (or rate) block added at end (up to 4 lead/lags total).

Pss2ST

PTI microprocessor-based stabilizer type 1.

Pss5

Detailed Italian PSS.

PssELIN2

Power system stabilizer typically associated with ExcELIN2 (though PssIEEE2B or Pss2B can also be used).

PssIEEE1A

IEEE 421.5-2005 type PSS1A power system stabilizer model. PSS1A is the generalized form of a PSS with a single input signal. Reference: IEEE 1A 421.5-2005, 8.1.

PssIEEE2B

IEEE 421.5-2005 type PSS2B power system stabilizer model. This stabilizer model is designed to represent a variety of dual-input stabilizers, which normally use combinations of power and speed or frequency to derive the stabilizing signal. Reference: IEEE 2B 421.5-2005, 8.2.

PssIEEE3B

IEEE 421.5-2005 type PSS3B power system stabilizer model. The PSS model PSS3B has dual inputs of electrical power and rotor angular frequency deviation. The signals are used to derive an equivalent mechanical power signal. This model has 2 input signals. They have the following fixed types (expressed in terms of InputSignalKind values): the first one is of rotorAngleFrequencyDeviation type and the second one is of generatorElectricalPower type. Reference: IEEE 3B 421.5-2005, 8.3.

PssIEEE4B

IEEE 421.5-2005 type PSS4B power system stabilizer. The PSS4B model represents a structure based on multiple working frequency bands. Three separate bands, respectively dedicated to the low-, intermediate- and high-frequency modes of oscillations, are used in this delta omega (speed input) PSS. There is an error in the in IEEE 421.5-2005 PSS4B model: the Pe input should read –Pe. This implies that the input Pe needs to be multiplied by -1. Reference: IEEE 4B 421.5-2005, 8.4. Parameter details: This model has 2 input signals. They have the following fixed types (expressed in terms of InputSignalKind values): the first one is of rotorAngleFrequencyDeviation type and the second one is of generatorElectricalPower type.

PssPTIST1

PTI microprocessor-based stabilizer type 1.

PssPTIST3

PTI microprocessor-based stabilizer type 3.

PssRQB

Power system stabilizer type RQB. This power system stabilizer is intended to be used together with excitation system type ExcRQB, which is primarily used in nuclear or thermal generating units.

PssSB4

Power sensitive stabilizer model.

PssSH

Siemens^TM “H infinity” power system stabilizer with generator electrical power input. [Footnote: Siemens "H infinity" power system stabilizers are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

PssSK

Slovakian PSS with three inputs.

PssSTAB2A

Power system stabilizer part of an ABB excitation system. [Footnote: ABB excitation systems are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]

PssWECC

Dual input power system stabilizer, based on IEEE type 2, with modified output limiter defined by WECC (Western Electricity Coordinating Council, USA).

PublicX509Certificate

Used to convey information that will allow matching in order to determine which certificate to use. Actual certificates are exchanged externally to the CIM exchange.

PumpingCostSchedule

The operating cost of a Pump Storage Hydro Unit operating as a hydro pump.

This schedule is assocated with the hourly parameters in a resource bid associated with a specific product within the bid.

PumpingLevelSchedule

The fixed operating level of a Pump Storage Hydro Unit operating as a hydro pump. Associated with the energy market product type.

This schedule is assocated with the hourly parameters in a resource bid associated with a specific product within the bid.

PumpingShutDownCostSchedule

The cost to shutdown a Pump Storage Hydro Unit (in pump mode) or a pump.

This schedule is assocated with the hourly parameters in a resource bid associated with a specific product within the bid.

PWRSteamSupply

Pressurized water reactor used as a steam supply to a steam turbine.

Qlimiter

n/a

Qmode

n/a

Qregulator

n/a

QualificationRequirement

Certain skills are required and must be certified in order for a person (typically a member of a crew) to be qualified to work on types of equipment.

Quality61850

Quality flags in this class are as defined in IEC 61850, except for estimatorReplaced, which has been included in this class for convenience.

Quantity

Description of quantities needed in the data exchange. The type of the quantity is described either by the role of the association or the type attribute. The quality attribute provides the information about the quality of the quantity (measured, estimated, etc.).

RaiseLowerCommand

An analog control that increases or decreases a set point value with pulses. Unless otherwise specified, one pulse moves the set point by one.

RampRateCurve

Ramp rate as a function of resource MW output.

Ratio

Fraction specified explicitly with a numerator and denominator, which can be used to calculate the quotient.

RationalNumber

Rational number = 'numerator' / 'denominator'.

RatioTapChanger

A tap changer that changes the voltage ratio impacting the voltage magnitude but not the phase angle across the transformer.

Angle sign convention (general): Positive value indicates a positive phase shift from the winding where the tap is located to the other winding (for a two-winding transformer).

RatioTapChangerTable

Describes a curve for how the voltage magnitude and impedance varies with the tap step.

RatioTapChangerTablePoint

Describes each tap step in the ratio tap changer tabular curve.

ReactiveCapabilityCurve

Reactive power rating envelope versus the synchronous machine's active power, in both the generating and motoring modes. For each active power value there is a corresponding high and low reactive power limit value. Typically there will be a separate curve for each coolant condition, such as hydrogen pressure. The Y1 axis values represent reactive minimum and the Y2 axis values represent reactive maximum.

Reading

Specific value measured by a meter or other asset, or calculated by a system. Each Reading is associated with a specific ReadingType.

ReadingInterharmonic

Interharmonics are represented as a rational number 'numerator' / 'denominator', and harmonics are represented using the same mechanism and identified by 'denominator'=1.

ReadingQuality

Quality of a specific reading value or interval reading value. Note that more than one quality may be applicable to a given reading. Typically not used unless problems or unusual conditions occur (i.e., quality for each reading is assumed to be good unless stated otherwise in associated reading quality type). It can also be used with the corresponding reading quality type to indicate that the validation has been performed and succeeded.

ReadingQualityType

Detailed description for a quality of a reading value, produced by an end device or a system. Values in attributes allow for creation of the recommended codes to be used for identifying reading value quality codes as follows: ...

ReadingType

Detailed description for a type of a reading value. Values in attributes allow for the creation of recommended codes to be used for identifying reading value types as follows: ..................

Reason

The motivation of an act.

Receipt

Record of total receipted payment from customer.

Recloser

Pole-mounted fault interrupter with built-in phase and ground relays, current transformer (CT), and supplemental controls.

RecloserInfo

Properties of recloser assets.

RecloseSequence

A reclose sequence (open and close) is defined for each possible reclosure of a breaker.

Reconditioning

Reconditioning information for an asset.

RedLine

This class is used for handling the accompanying annotations, time stamp, author, etc. of designs, drawings and maps. A red line can be associated with any Location object.

Register

A device that indicates or records units of the commodity or other quantity measured.

RegisteredControllableLoad

Temporary holding for load reduction attributes removed from RegisteredLoad. Use for future use case when developing the RegisteredDistributedResource specialized classes.

RegisteredDistributedResource

A registered resource that represents a distributed energy resource, such as a micro-generator, fuel cell, photo-voltaic energy source, etc.

RegisteredGenerator

Model of a generator that is registered to participate in the market.

RegisteredInterTie

This class represents the inter tie resource.

RegisteredLoad

Model of a load that is registered to participate in the market.

RegisteredLoad is used to model any load that is served by the wholesale market directly. RegisteredLoads may be dispatchable or non-dispatchable and may or may not have bid curves. Examples of RegisteredLoads would include: distribution company load, energy retailer load, large bulk power system connected facility load.

Loads that are served indirectly, for example - through an energy retailer or a vertical utility, should be modeled as RegisteredDistributedResources. Examples of RegisteredDistributedResources would include: distribution level storage, distribution level generation and distribution level demand response.

RegisteredResource

A resource that is registered through the market participant registration system. Examples include generating unit, load, and non-physical generator or load.

RegularIntervalSchedule

The schedule has time points where the time between them is constant.

RegularTimePoint

Time point for a schedule where the time between the consecutive points is constant.

RegulatingCondEq

A type of conducting equipment that can regulate a quantity (i.e. voltage or flow) at a specific point in the network.

RegulatingControl

Specifies a set of equipment that works together to control a power system quantity such as voltage or flow. Remote bus voltage control is possible by specifying the controlled terminal located at some place remote from the controlling equipment. The specified terminal shall be associated with the connectivity node of the controlled point. The most specific subtype of RegulatingControl shall be used in case such equipment participate in the control, e.g. TapChangerControl for tap changers. For flow control, load sign convention is used, i.e. positive sign means flow out from a TopologicalNode (bus) into the conducting equipment. The attribute minAllowedTargetValue and maxAllowedTargetValue are required in the following cases: - For a power generating module operated in power factor control mode to specify maximum and minimum power factor values; - Whenever it is necessary to have an off center target voltage for the tap changer regulator. For instance, due to long cables to off shore wind farms and the need to have a simpler setup at the off shore transformer platform, the voltage is controlled from the land at the connection point for the off shore wind farm. Since there usually is a voltage rise along the cable, there is typical and overvoltage of up 3-4 kV compared to the on shore station. Thus in normal operation the tap changer on the on shore station is operated with a target set point, which is in the lower parts of the dead band. The attributes minAllowedTargetValue and maxAllowedTargetValue are not related to the attribute targetDeadband and thus they are not treated as an alternative of the targetDeadband. They are needed due to limitations in the local substation controller. The attribute targetDeadband is used to prevent the power flow from move the tap position in circles (hunting) that is to be used regardless of the attributes minAllowedTargetValue and maxAllowedTargetValue.

RegulatingLimit

This class represents the physical characteristic of a generator regarding the regulating limit.

Regulation

Special requirements and/or regulations may pertain to certain types of assets or work. For example, fire protection and scaffolding.

RegulationSchedule

A pre-established pattern over time for a controlled variable, e.g., busbar voltage.

RelativeDisplacement

Vertical displacement relative to either sealevel, ground or the center of the earth.

ReliabilityInfo

Information regarding the experienced and expected reliability of a specific asset, type of asset, or asset model.

RemedialActionScheme

Remedial Action Scheme (RAS), Special Protection Schemes (SPS), System Protection Schemes (SPS) or System Integrity Protection Schemes (SIPS).

RemoteConnectDisconnectInfo

Details of remote connect and disconnect function.

RemoteControl

Remote controls are outputs that are sent by the remote unit to actuators in the process.

RemoteInputSignal

Supports connection to a terminal associated with a remote bus from which an input signal of a specific type is coming.

RemotePoint

For an RTU, remote points correspond to telemetered values or control outputs. Other units (e.g. control centres) usually also contain calculated values.

RemoteSource

Remote sources are state variables that are telemetered or calculated within the remote unit.

RemoteUnit

A remote unit can be an RTU, IED, substation control system, control centre, etc. The communication with the remote unit can be through various standard protocols (e.g. IEC 61870, IEC 61850) or non standard protocols (e.g. DNP, RP570, etc.). A remote unit contains remote data points that might be telemetered, collected or calculated. The RemoteUnit class inherits PowerSystemResource. The intention is to allow RemoteUnits to have Measurements. These Measurements can be used to model unit status as operational, out of service, unit failure, etc.

RepairItem

Asset component to be repaired or problem area to be corrected.

RepairWorkTask

Work task for asset repair. Costs associated with this are considered corrective maintenance (CM) costs.

ReportingCapability

Definition of one set of reporting capabilities for this monitoring station. The associated EnvironmentalValueSets describe the maximum range of possible environmental values the station is capable of returning. This attribute is intended primarily to assist a utility in managing its stations.

ReportingGroup

A reporting group is used for various ad-hoc groupings used for reporting.

ReportingSuperGroup

A reporting super group, groups reporting groups for a higher level report.

ReserveDemandCurve

Reserve demand curve. Models maximum quantities of reserve required per Market Region and models a reserve demand curve for the minimum quantities of reserve. The ReserveDemandCurve is a relationship between unit operating reserve price in $/MWhr (Y-axis) and unit reserves in MW (X-axis).

ReserveReq

Requirements for minimum amount of reserve and/or regulation to be supplied by a set of qualified resources.

ReserveReqCurve

A curve relating reserve requirement versus time, showing the values of a specific reserve requirement for each unit of the period covered. The curve can be based on "absolute" time or on "normalized' time. X is time, typically expressed in absolute time Y1 is reserve requirement, typically expressed in MW

Reservoir

A water storage facility within a hydro system, including: ponds, lakes, lagoons, and rivers. The storage is usually behind some type of dam.

ResourceAwardClearing

Models details of bid and offer market clearing. Class indicates whether a contingency is active and whether the automatic dispatching system is active for this interval of the market solution.

ResourceAwardInstruction

Model of market results, instruction for resource. Contains details of award as attributes.

ResourceBid

Energy bid for generation, load, or virtual type for the whole of the market-trading period (i.e., one day in day ahead market or one hour in the real time market).

ResourceCapacity

This class model the various capacities of a resource. A resource may have numbers of capacities related to operating, ancillary services, energy trade and so forth. Capacities may be defined for active power or reactive power.

ResourceCertification

Specifies certification for a resource to participate in a specific markets.

ResourceClearing

Model of market results, including cleaing result of resources. Associated with ResourceDispatchResults.

ResourceDeploymentStatus

n/a

ResourceDispatchResults

The ResourceDispatchResults class provides market results that can be provided to a SC. The specific data provided consists of several indicators such as contingency flags, blocked start up, and RMR dispatch. It also provides the projected overall and the regulating status of the resource.

ResourceGroup

A logical grouping of resources that are used to model location of types of requirements for ancillary services such as spinning reserve zones, regulation zones, etc.

ResourceGroupReq

Ancillary service requirements for a market.

ResourceLoadFollowingInst

Model of market clearing results for resources that bid to follow load.

ResourceOperationMaintenanceCost

To model the Operation and Maintenance (O and M) costs of a generation resource.

ResourcePerformanceEvaluation

Represents an the performance evaluation of a resource deployment. Every resource deployment may have many performance evaluations, using different evaluation metrics or algorithms, or produced by different evaluation authorities.

ResourcePerformanceGlobalFactor

Global factors are property/value pairs that are used to adjust resource performance values. Example include scale factors (e.g. scale a baseline up or down), adders (positive or negative), etc.

ResourcePerformanceRating

Rating of a resource for its demand response performance. e.g. given a set on monthly resource demand response performance evaluations, the resource may be rated with excellent, average, or poor performance for the sample set.

ResourcePerformanceTimeSeriesFactor

Represents the performance of a resource as time series data for a specified time period, time interval, and evaluation criteria.

ResourceStartupCost

To model the startup costs of a generation resource.

ResourceVerifiableCosts

This class is defined to describe the verifiable costs associated with a generation resource.

ResponseMethod

Specifies a category of energy usage that the demand response applies for; e.g. energy from lighting, HVAC, other.

RevisionHistory

History of changes made to a switching plan step after the switching plan has been approved.

RightOfWay

A right-of-way (ROW) is for land where it is lawful to use for a public road, an electric power line, etc. Note that the association to Location, Asset, Organisation, etc. for the Grant is inherited from Agreement, a type of Document.

RiskScore

Score that is indicative of the risk associated with one or more assets.

RMRDetermination

Indicates whether unit is a reliablity must run unit: required to be on to satisfy Grid Code Reliablitiy criteria, load demand, or voltage support.

RMRHeatRateCurve