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
%%{init: {'theme':'base','themeVariables': {'lineColor': '#FF0000'}}}%%
classDiagram
class Measurement
click Measurement href "/Models/Profiles/Operation/AbstractClasses/Measurement/"
style Measurement fill:#102820,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement <|-- Accumulator : inherits
Accumulator
click Accumulator href "/Models/Profiles/Operation/ConcreteClasses/Accumulator/"
style Accumulator fill:#8F9779,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement <|-- Analog : inherits
Analog
click Analog href "/Models/Profiles/Operation/ConcreteClasses/Analog/"
style Analog fill:#8F9779,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement <|-- Discrete : inherits
Discrete
click Discrete href "/Models/Profiles/Operation/ConcreteClasses/Discrete/"
style Discrete fill:#8F9779,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement <|-- StringMeasurement : inherits
StringMeasurement
click StringMeasurement href "/Models/Profiles/Operation/ConcreteClasses/StringMeasurement/"
style StringMeasurement fill:#8F9779,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
IdentifiedObject <|-- Measurement : inherits
click IdentifiedObject href "/Models/Profiles/Operation/AbstractClasses/IdentifiedObject/"
style IdentifiedObject fill:#8F9779,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement --> ACDCTerminal : Measurement.Terminal
ACDCTerminal
click ACDCTerminal href "/Models/Profiles/Operation/AbstractClasses/ACDCTerminal/"
style ACDCTerminal fill:#A52A2A,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement --> PowerSystemResource : Measurement.PowerSystemResource
PowerSystemResource
click PowerSystemResource href "/Models/Profiles/Operation/AbstractClasses/PowerSystemResource/"
style PowerSystemResource fill:#A52A2A,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
ACDCTerminal --> Measurement : ACDCTerminal.Measurements
ACDCTerminal
click ACDCTerminal href "/Models/Profiles/Operation/AbstractClasses/ACDCTerminal/"
style ACDCTerminal fill:#A52A2A,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
PowerSystemResource --> Measurement : PowerSystemResource.Measurements
PowerSystemResource
click PowerSystemResource href "/Models/Profiles/Operation/AbstractClasses/PowerSystemResource/"
style PowerSystemResource fill:#A52A2A,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement --> PhaseCode : Measurement.phases
PhaseCode
click PhaseCode href "/Models/Profiles/Operation/Enumerations/PhaseCode/"
style PhaseCode fill:#4D2D18,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement --> UnitMultiplier : Measurement.unitMultiplier
UnitMultiplier
click UnitMultiplier href "/Models/Profiles/Operation/Enumerations/UnitMultiplier/"
style UnitMultiplier fill:#4D2D18,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement --> UnitSymbol : Measurement.unitSymbol
UnitSymbol
click UnitSymbol href "/Models/Profiles/Operation/Enumerations/UnitSymbol/"
style UnitSymbol fill:#4D2D18,stroke:#333,stroke-width:2px,rx:10,ry:10,color:white
Measurement : Measurement.Terminal
Measurement : Measurement.measurementType
Measurement : Measurement.phases
Measurement : Measurement.unitMultiplier
Measurement : Measurement.unitSymbol
Measurement : Measurement.PowerSystemResource
IdentifiedObject : IdentifiedObject.description
IdentifiedObject : IdentifiedObject.mRID
IdentifiedObject : IdentifiedObject.nameInheritance
- IdentifiedObject
- Measurement
Attributes
| Name | URI | Cardinality and Range | Description | Inheritance |
|---|---|---|---|---|
| Terminal | cim:Measurement.Terminal | No cardinality available ACDCTerminal | One or more measurements may be associated with a terminal in the network. | direct |
| measurementType | cim:Measurement.measurementType | No cardinality available string | Specifies the type of measurement. For example, this specifies if the measurement represents an indoor temperature, outdoor temperature, bus voltage, line flow, etc. | |
| When the measurementType is set to "Specialization", the type of Measurement is defined in more detail by the specialized class which inherits from Measurement. | direct | |||
| phases | cim:Measurement.phases | No cardinality available PhaseCode | Indicates to which phases the measurement applies and avoids the need to use 'measurementType' to also encode phase information (which would explode the types). The phase information in Measurement, along with 'measurementType' and 'phases' uniquely defines a Measurement for a device, based on normal network phase. Their meaning will not change when the computed energizing phasing is changed due to jumpers or other reasons. | |
| If the attribute is missing three phases (ABC) shall be assumed. | direct | |||
| unitMultiplier | cim:Measurement.unitMultiplier | No cardinality available UnitMultiplier | The unit multiplier of the measured quantity. | direct |
| unitSymbol | cim:Measurement.unitSymbol | No cardinality available UnitSymbol | The unit of measure of the measured quantity. | direct |
| PowerSystemResource | cim:Measurement.PowerSystemResource | No cardinality available PowerSystemResource | The power system resource that contains the measurement. | direct |
| description | cim:IdentifiedObject.description | No cardinality available 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. | IdentifiedObject |
| mRID | cim:IdentifiedObject.mRID | No cardinality available 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. | IdentifiedObject | |||
| name | cim:IdentifiedObject.name | No cardinality available string | The name is any free human readable and possibly non unique text naming the object. | IdentifiedObject |