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.

URI: cim:Measurement
Type: Class

 classDiagram
    class Measurement
    click Measurement href "../Measurement"
      IdentifiedObject <|-- Measurement
        click IdentifiedObject href "../IdentifiedObject"


      Measurement <|-- Accumulator
        click Accumulator href "../Accumulator"
      Measurement <|-- Analog
        click Analog href "../Analog"
      Measurement <|-- Discrete
        click Discrete href "../Discrete"
      Measurement <|-- StringMeasurement
        click StringMeasurement href "../StringMeasurement"


      Measurement : IdentifiedObject.description

      Measurement : Measurement.measurementType

      Measurement : IdentifiedObject.mRID

      Measurement : IdentifiedObject.name

      Measurement : Measurement.phases

          Measurement --> PhaseCode : Measurement.phases
          click PhaseCode href "../PhaseCode"

      Measurement : Measurement.PowerSystemResource

          Measurement --> PowerSystemResource : Measurement.PowerSystemResource
          click PowerSystemResource href "../PowerSystemResource"

      Measurement : Measurement.Terminal

          Measurement --> ACDCTerminal : Measurement.Terminal
          click ACDCTerminal href "../ACDCTerminal"

      Measurement : Measurement.unitMultiplier

          Measurement --> UnitMultiplier : Measurement.unitMultiplier
          click UnitMultiplier href "../UnitMultiplier"

      Measurement : Measurement.unitSymbol

          Measurement --> UnitSymbol : Measurement.unitSymbol
          click UnitSymbol href "../UnitSymbol"

Inheritance

• IdentifiedObject
  • Measurement
    • Accumulator
    • Analog
    • Discrete
    • StringMeasurement

Attributes

Name	URI	Cardinality and Range	Description	Inheritance
Terminal	cim:Measurement.Terminal	0..1 ACDCTerminal	One or more measurements may be associated with a terminal in the network	direct
measurementType	cim:Measurement.measurementType	1 string	Specifies the type of measurement	direct
phases	cim:Measurement.phases	0..1 PhaseCode	Indicates to which phases the measurement applies and avoids the need to use ...	direct
unitMultiplier	cim:Measurement.unitMultiplier	1 UnitMultiplier	The unit multiplier of the measured quantity	direct
unitSymbol	cim:Measurement.unitSymbol	1 UnitSymbol	The unit of measure of the measured quantity	direct
PowerSystemResource	cim:Measurement.PowerSystemResource	1 PowerSystemResource	The power system resource that contains the measurement	direct
description	cim:IdentifiedObject.description	0..1 string	The description is a free human readable text describing or naming the object	IdentifiedObject
mRID	cim:IdentifiedObject.mRID	1 string	Master resource identifier issued by a model authority	IdentifiedObject
name	cim:IdentifiedObject.name	1 string	The name is any free human readable and possibly non unique text naming the o...	IdentifiedObject

Usages

used by	used in	type	used
ACDCTerminal	Measurements	range	Measurement
PowerSystemResource	Measurements	range	Measurement
Terminal	Measurements	range	Measurement

Identifier and Mapping Information

Schema Source

• from schema: http://iec.ch/TC57/ns/CIM/Operation-EU#Package_OperationProfile

Mappings

Mapping Type	Mapped Value
self	cim:Measurement
native	this:Measurement