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.b0

          PowerTransformerEnd --> Susceptance : PowerTransformerEnd.b0
          click Susceptance href "../Susceptance"

      PowerTransformerEnd : PowerTransformerEnd.g0

          PowerTransformerEnd --> Conductance : PowerTransformerEnd.g0
          click Conductance href "../Conductance"

      PowerTransformerEnd : TransformerEnd.grounded

      PowerTransformerEnd : IdentifiedObject.mRID

      PowerTransformerEnd : PowerTransformerEnd.phaseAngleClock

      PowerTransformerEnd : PowerTransformerEnd.r0

          PowerTransformerEnd --> Resistance : PowerTransformerEnd.r0
          click Resistance href "../Resistance"

      PowerTransformerEnd : TransformerEnd.rground

          PowerTransformerEnd --> Resistance : TransformerEnd.rground
          click Resistance href "../Resistance"

      PowerTransformerEnd : PowerTransformerEnd.x0

          PowerTransformerEnd --> Reactance : PowerTransformerEnd.x0
          click Reactance href "../Reactance"

      PowerTransformerEnd : TransformerEnd.xground

          PowerTransformerEnd --> Reactance : TransformerEnd.xground
          click Reactance href "../Reactance"

Inheritance

• IdentifiedObject
  • TransformerEnd
    • PowerTransformerEnd

Attributes

Name	URI	Cardinality and Range	Description	Inheritance
b0	cim:PowerTransformerEnd.b0	1 Susceptance	Zero sequence magnetizing branch susceptance	direct
phaseAngleClock	cim:PowerTransformerEnd.phaseAngleClock	1 integer	Terminal voltage phase angle displacement where 360 degrees are represented w...	direct
g0	cim:PowerTransformerEnd.g0	1 Conductance	Zero sequence magnetizing branch conductance (star-model)	direct
r0	cim:PowerTransformerEnd.r0	1 Resistance	Zero sequence series resistance (star-model) of the transformer end	direct
x0	cim:PowerTransformerEnd.x0	1 Reactance	Zero sequence series reactance of the transformer end	direct
rground	cim:TransformerEnd.rground	0..1 Resistance	(for Yn and Zn connections) Resistance part of neutral impedance where 'groun...	TransformerEnd
grounded	cim:TransformerEnd.grounded	1 boolean	(for Yn and Zn connections) True if the neutral is solidly grounded	TransformerEnd
xground	cim:TransformerEnd.xground	0..1 Reactance	(for Yn and Zn connections) Reactive part of neutral impedance where 'grounde...	TransformerEnd
mRID	cim:IdentifiedObject.mRID	1 string	Master resource identifier issued by a model authority	IdentifiedObject

Identifier and Mapping Information

Schema Source

• from schema: http://iec.ch/TC57/ns/CIM/ShortCircuit-EU#Package_ShortCircuitProfile

Mappings

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