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).

URI: cim:PowerTransformerEnd
Type: Class

 classDiagram
    class PowerTransformerEnd
    click PowerTransformerEnd href "../PowerTransformerEnd"
      TransformerEnd <|-- PowerTransformerEnd
        click TransformerEnd href "../TransformerEnd"

      PowerTransformerEnd : PowerTransformerEnd.b

          PowerTransformerEnd --> Susceptance : PowerTransformerEnd.b
          click Susceptance href "../Susceptance"

      PowerTransformerEnd : TransformerEnd.BaseVoltage

          PowerTransformerEnd --> BaseVoltage : TransformerEnd.BaseVoltage
          click BaseVoltage href "../BaseVoltage"

      PowerTransformerEnd : PowerTransformerEnd.connectionKind

          PowerTransformerEnd --> WindingConnection : PowerTransformerEnd.connectionKind
          click WindingConnection href "../WindingConnection"

      PowerTransformerEnd : IdentifiedObject.description

      PowerTransformerEnd : TransformerEnd.endNumber

      PowerTransformerEnd : IdentifiedObject.energyIdentCodeEic

      PowerTransformerEnd : PowerTransformerEnd.g

          PowerTransformerEnd --> Conductance : PowerTransformerEnd.g
          click Conductance href "../Conductance"

      PowerTransformerEnd : IdentifiedObject.mRID

      PowerTransformerEnd : IdentifiedObject.name

      PowerTransformerEnd : TransformerEnd.PhaseTapChanger

          PowerTransformerEnd --> PhaseTapChanger : TransformerEnd.PhaseTapChanger
          click PhaseTapChanger href "../PhaseTapChanger"

      PowerTransformerEnd : PowerTransformerEnd.PowerTransformer

          PowerTransformerEnd --> PowerTransformer : PowerTransformerEnd.PowerTransformer
          click PowerTransformer href "../PowerTransformer"

      PowerTransformerEnd : PowerTransformerEnd.r

          PowerTransformerEnd --> Resistance : PowerTransformerEnd.r
          click Resistance href "../Resistance"

      PowerTransformerEnd : PowerTransformerEnd.ratedS

          PowerTransformerEnd --> ApparentPower : PowerTransformerEnd.ratedS
          click ApparentPower href "../ApparentPower"

      PowerTransformerEnd : PowerTransformerEnd.ratedU

          PowerTransformerEnd --> Voltage : PowerTransformerEnd.ratedU
          click Voltage href "../Voltage"

      PowerTransformerEnd : TransformerEnd.RatioTapChanger

          PowerTransformerEnd --> RatioTapChanger : TransformerEnd.RatioTapChanger
          click RatioTapChanger href "../RatioTapChanger"

      PowerTransformerEnd : IdentifiedObject.shortName

      PowerTransformerEnd : TransformerEnd.Terminal

          PowerTransformerEnd --> Terminal : TransformerEnd.Terminal
          click Terminal href "../Terminal"

      PowerTransformerEnd : PowerTransformerEnd.x

          PowerTransformerEnd --> Reactance : PowerTransformerEnd.x
          click Reactance href "../Reactance"

Inheritance

• IdentifiedObject
  • TransformerEnd
    • PowerTransformerEnd

Attributes

Name	URI	Cardinality and Range	Description	Inheritance
PowerTransformer	cim:PowerTransformerEnd.PowerTransformer	1 PowerTransformer	The power transformer of this power transformer end	direct
b	cim:PowerTransformerEnd.b	1 Susceptance	Magnetizing branch susceptance (B mag)	direct
connectionKind	cim:PowerTransformerEnd.connectionKind	0..1 WindingConnection	Kind of connection	direct
ratedS	cim:PowerTransformerEnd.ratedS	0..1 ApparentPower	Normal apparent power rating	direct
g	cim:PowerTransformerEnd.g	0..1 Conductance	Magnetizing branch conductance	direct
ratedU	cim:PowerTransformerEnd.ratedU	1 Voltage	Rated voltage: phase-phase for three-phase windings, and either phase-phase o...	direct
r	cim:PowerTransformerEnd.r	1 Resistance	Resistance (star-model) of the transformer end	direct
x	cim:PowerTransformerEnd.x	1 Reactance	Positive sequence series reactance (star-model) of the transformer end	direct
BaseVoltage	cim:TransformerEnd.BaseVoltage	1 BaseVoltage	Base voltage of the transformer end	TransformerEnd
PhaseTapChanger	cim:TransformerEnd.PhaseTapChanger	0..1 PhaseTapChanger	Phase tap changer associated with this transformer end	TransformerEnd
RatioTapChanger	cim:TransformerEnd.RatioTapChanger	0..1 RatioTapChanger	Ratio tap changer associated with this transformer end	TransformerEnd
Terminal	cim:TransformerEnd.Terminal	1 Terminal	Terminal of the power transformer to which this transformer end belongs	TransformerEnd
endNumber	cim:TransformerEnd.endNumber	1 integer	Number for this transformer end, corresponding to the end's order in the powe...	TransformerEnd
description	cim:IdentifiedObject.description	0..1 string	The description is a free human readable text describing or naming the object	IdentifiedObject
energyIdentCodeEic	eu:IdentifiedObject.energyIdentCodeEic	0..1 string	The attribute is used for an exchange of the EIC code (Energy identification ...	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
shortName	eu:IdentifiedObject.shortName	0..1 string	The attribute is used for an exchange of a human readable short name with len...	IdentifiedObject

Usages

used by	used in	type	used
PowerTransformer	PowerTransformerEnd	range	PowerTransformerEnd

Identifier and Mapping Information

Schema Source

• from schema: http://iec.ch/TC57/ns/CIM/CoreEquipment-EU#Package_CoreEquipmentProfile

Mappings

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