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.

• NOTE: this is an abstract class and should not be instantiated directly

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.PowerSystemResource

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

      Measurement : Measurement.Terminal

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

Inheritance

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

Attributes

Name	URI	Cardinality and Range	Description	Inheritance
measurementType	cim:Measurement.measurementType	1 string	Specifies the type of measurement	direct
PowerSystemResource	cim:Measurement.PowerSystemResource	1 PowerSystemResource	The power system resource that contains the measurement	direct
Terminal	cim:Measurement.Terminal	0..1 ACDCTerminal	One or more measurements may be associated with a terminal in the network	direct
mRID	cim:IdentifiedObject.mRID	1 string	Master resource identifier issued by a model authority	IdentifiedObject
description	cim:IdentifiedObject.description	0..1 string	The description is a free human readable text describing or naming the object	IdentifiedObject
name	cim:IdentifiedObject.name	1 string	The name is any free human readable and possibly non unique text naming the o...	IdentifiedObject

Identifier and Mapping Information

Schema Source

• from schema: http://iec.ch/TC57/2020/CPSM-Operation#

Mappings

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