SynchronousMachineTimeConstantReactance

InstanceSet

1

InstanceSet

Dataset containing the data objects.

SynchronousMachine

1

SynchronousMachine

Synchronous machine to which synchronous machine dynamics model applies.

ks

0..1

float

Saturation loading correction factor (Ks) (>= 0). Used only by type J model. Typical value = 0.

modelType

0..1

SynchronousMachineModelKind

Type of synchronous machine model used in dynamic simulation applications.

rotorType

0..1

RotorKind

Type of rotor on physical machine.

tc

0..1

Seconds

Damping time constant for “Canay” reactance (>= 0). Typical value = 0.

tpdo

0..1

Seconds

Direct-axis transient rotor time constant (T'do) (> SynchronousMachineTimeConstantReactance.tppdo). Typical value = 5.

tppdo

0..1

Seconds

Direct-axis subtransient rotor time constant (T''do) (> 0). Typical value = 0,03.

tppqo

0..1

Seconds

Quadrature-axis subtransient rotor time constant (T''qo) (> 0). Typical value = 0,03.

tpqo

0..1

Seconds

Quadrature-axis transient rotor time constant (T'qo) (> SynchronousMachineTimeConstantReactance.tppqo). Typical value = 0,5.

xDirectSubtrans

0..1

PU

Direct-axis subtransient reactance (unsaturated) (X''d) (> RotatingMachineDynamics.statorLeakageReactance). Typical value = 0,2.

xDirectSync

0..1

PU

Direct-axis synchronous reactance (Xd) (>= SynchronousMachineTimeConstantReactance.xDirectTrans). The quotient of a sustained value of that AC component of armature voltage that is produced by the total direct-axis flux due to direct-axis armature current and the value of the AC component of this current, the machine running at rated speed. Typical value = 1,8.

xDirectTrans

0..1

PU

Direct-axis transient reactance (unsaturated) (X'd) (>= SynchronousMachineTimeConstantReactance.xDirectSubtrans). Typical value = 0,5.

xQuadSubtrans

0..1

PU

Quadrature-axis subtransient reactance (X''q) (> RotatingMachineDynamics.statorLeakageReactance). Typical value = 0,2.

xQuadSync

0..1

PU

Quadrature-axis synchronous reactance (Xq) (>= SynchronousMachineTimeConstantReactance.xQuadTrans). The ratio of the component of reactive armature voltage, due to the quadrature-axis component of armature current, to this component of current, under steady state conditions and at rated frequency. Typical value = 1,6.

xQuadTrans

0..1

PU

Quadrature-axis transient reactance (X'q) (>= SynchronousMachineTimeConstantReactance.xQuadSubtrans). Typical value = 0,3.

CrossCompoundTurbineGovernorDyanmics

0..1

CrossCompoundTurbineGovernorDynamics

The cross-compound turbine governor with which this high-pressure synchronous machine is associated.

CrossCompoundTurbineGovernorDynamics

0..1

CrossCompoundTurbineGovernorDynamics

The cross-compound turbine governor with which this low-pressure synchronous machine is associated.

ExcitationSystemDynamics

0..1

ExcitationSystemDynamics

Excitation system model associated with this synchronous machine model.

MechanicalLoadDynamics

0..1

MechanicalLoadDynamics

Mechanical load model associated with this synchronous machine model.

PropertiesCIMDataObject

0..1

ChangeSetMember

The single CIM data object in the appropriate dataset context.

aliasName

0..1

string

The aliasName is free text human readable name of the object alternative to IdentifiedObject.name. It may be non unique and may not correlate to a naming hierarchy. The attribute aliasName is retained because of backwards compatibility between CIM relases. It is however recommended to replace aliasName with the Name class as aliasName is planned for retirement at a future time.

damping

0..1

float

Damping torque coefficient (D) (>= 0). A proportionality constant that, when multiplied by the angular velocity of the rotor poles with respect to the magnetic field (frequency), results in the damping torque. This value is often zero when the sources of damping torques (generator damper windings, load damping effects, etc.) are modelled in detail. Typical value = 0.

description

0..1

string

The description is a free human readable text describing or naming the object. It may be non unique and may not correlate to a naming hierarchy.

efdBaseRatio

0..1

float

Ratio (exciter voltage/generator voltage) of Efd bases of exciter and generator models (> 0). Typical value = 1.

enabled

0..1

boolean

Function block used indicator. true = use of function block is enabled false = use of function block is disabled.

ifdBaseType

0..1

IfdBaseKind

Excitation base system mode. It should be equal to the value of WLMDV given by the user. WLMDV is the PU ratio between the field voltage and the excitation current: Efd = WLMDV x Ifd. Typical value = ifag.

inertia

0..1

Seconds

Inertia constant of generator or motor and mechanical load (H) (> 0). This is the specification for the stored energy in the rotating mass when operating at rated speed. For a generator, this includes the generator plus all other elements (turbine, exciter) on the same shaft and has units of MW x s. For a motor, it includes the motor plus its mechanical load. Conventional units are PU on the generator MVA base, usually expressed as MW x s / MVA or just s. This value is used in the accelerating power reference frame for operator training simulator solutions. Typical value = 3.

mRID

0..1

string

Master resource identifier issued by a model authority. The mRID is unique within an exchange context. Global uniqueness is easily achieved by using a UUID, as specified in RFC 4122, for the mRID. The use of UUID is strongly recommended. For CIMXML data files in RDF syntax conforming to IEC 61970-552, the mRID is mapped to rdf:ID or rdf:about attributes that identify CIM object elements.

name

0..1

string

The name is any free human readable and possibly non unique text naming the object.

saturationFactor

0..1

float

Saturation factor at rated terminal voltage (S1) (>= 0). Not used by simplified model. Defined by defined by S(E1) in the SynchronousMachineSaturationParameters diagram. Typical value = 0,02.

saturationFactor120

0..1

float

Saturation factor at 120% of rated terminal voltage (S12) (>= RotatingMachineDynamics.saturationFactor). Not used by the simplified model, defined by S(E2) in the SynchronousMachineSaturationParameters diagram. Typical value = 0,12.

saturationFactor120QAxis

0..1

float

Quadrature-axis saturation factor at 120% of rated terminal voltage (S12q) (>= SynchonousMachineDetailed.saturationFactorQAxis). Typical value = 0,12.

saturationFactorQAxis

0..1

float

Quadrature-axis saturation factor at rated terminal voltage (S1q) (>= 0). Typical value = 0,02.

statorLeakageReactance

0..1

PU

Stator leakage reactance (Xl) (>= 0). Typical value = 0,15.

statorResistance

0..1

PU

Stator (armature) resistance (Rs) (>= 0). Typical value = 0,005.

DiagramObjects

0..*

DiagramObject

The diagram objects that are associated with the domain object.

GenICompensationForGenJ

0..*

GenICompensationForGenJ

Compensation of voltage compensator's generator for current flow out of this generator.

Names

0..*

Name

All names of this identified object.

TargetingCIMDataObject

0..*

ChangeSetMember

Data objects registered.

TurbineGovernorDynamics

0..*

TurbineGovernorDynamics

Turbine-governor model associated with this synchronous machine model. Multiplicity of greater than one is intended to support hydro units that have multiple turbines on one generator.