modelTransformerRatioTapChanger

Two winding transformer with a fixed phase and variable ratio
Diagram of TransformerRatioTapChanger

Extends from Dynawo.AdditionalIcons.Transformer, Dynawo.Electrical.Transformers.BaseClasses.BaseTransformer (Base model for a general two winding transformer (fixed or variable phase and/or ratio)).

Information

The transformer has the following equivalent circuit and conventions:


               I1  r,alpha          I2
    U1,P1,Q1 -->---oo----R+jX-------<-- U2,P2,Q2
  (terminal1)                   |      (terminal2)
                               G+jB
                                |
                               ---

Parameters

TypeNameDefaultDescription
IntegerNbSwitchOffSignals (from SwitchOffLogic)Number of switch-off signals to take into account in inputs
BooleanSwitchOffSignal10 (from SwitchOffLogic)falseInitial switch-off signal 1
BooleanSwitchOffSignal20 (from SwitchOffLogic)falseInitial switch-off signal 2
BooleanSwitchOffSignal30 (from SwitchOffLogic)falseInitial switch-off signal 3
BooleanRunning0 (from SwitchOffLogic)if NbSwitchOffSignals >= 3 then not (SwitchOffSignal10 or SwitchOffSignal20 or SwitchOffSignal30) elseif NbSwitchOffSignals >= 2 then not (SwitchOffSignal10 or SwitchOffSignal20) else not SwitchOffSignal10Indicates if the component is initially running or not
Constants.stateState0 (from SwitchOffTransformer)Constants.state.ClosedStart value of connection state
Types.PerUnitRPu (from TransformerParameters)Resistance of the generator transformer in pu (base U2Nom, SnRef)
Types.PerUnitXPu (from TransformerParameters)Reactance of the generator transformer in pu (base U2Nom, SnRef)
Types.PerUnitGPu (from TransformerParameters)Conductance of the generator transformer in pu (base U2Nom, SnRef)
Types.PerUnitBPu (from TransformerParameters)Susceptance of the generator transformer in pu (base U2Nom, SnRef)
Types.ComplexImpedancePuZPu (from TransformerParameters)Complex(RPu, XPu)Impedance in pu (base U2Nom, SnRef)
Types.ComplexAdmittancePuYPu (from TransformerParameters)Complex(GPu, BPu)Admittance in pu (base U2Nom, SnRef)
Types.ActivePowerPuP10Pu (from BaseTransformer)Start value of active power at terminal 1 in pu (base SnRef) (receptor convention)
Types.ReactivePowerPuQ10Pu (from BaseTransformer)Start value of reactive power at terminal 1 in pu (base SnRef) (receptor convention)
Types.VoltageModulePuU10Pu (from BaseTransformer)Start value of voltage amplitude at terminal 1 in pu (base U1Nom)
Types.PerUnitRatioTfo0Pu (from BaseTransformer)Start value of transformation ratio in pu: U2/U1 in no load conditions
Types.AngleAlphaTfo0 (from BaseTransformer)Start value of transformation phase shift in rad
Types.ComplexCurrentPui10Pu (from BaseTransformer)Start value of complex current at terminal 1 in pu (base U1Nom, SnRef) (receptor convention)
Types.ComplexCurrentPui20Pu (from BaseTransformer)Start value of complex current at terminal 2 in pu (base U2Nom, SnRef) (receptor convention)
Types.ComplexVoltagePuu10Pu (from BaseTransformer)Start value of complex voltage at terminal 1 in pu (base U1Nom)
Types.ComplexVoltagePuu20Pu (from BaseTransformer)Start value of complex voltage at terminal 2 in pu (base U2Nom)
Types.VoltageModulePuU20Pu (from BaseTransformer)Start value of voltage amplitude at terminal 2 in pu (base U2Nom)
IntegerNbTapNumber of taps
Types.PerUnitRatioTfoMinPuMinimum transformation ratio in pu: U2/U1 in no load conditions
Types.PerUnitRatioTfoMaxPuMaximum transformation ratio in pu: U2/U1 in no load conditions
Types.AngleAlphaTfoAlphaTfo0Transformation phase shift in rad
IntegerTap0Start value of transformer tap

Connectors

TypeNameDefaultDescription
Dynawo.Connectors.BPinswitchOffSignal1 (from SwitchOffLogic)Switch-off signal 1
Dynawo.Connectors.BPinswitchOffSignal2 (from SwitchOffLogic)Switch-off signal 2
Dynawo.Connectors.BPinswitchOffSignal3 (from SwitchOffLogic)Switch-off signal 3
Dynawo.Connectors.BPinrunning (from SwitchOffLogic)Indicates if the component is running or not
Dynawo.Connectors.ImPinP1Pu (from BaseTransformer)Active power at terminal 1 in pu (base SnRef) (receptor convention)
Dynawo.Connectors.ImPinQ1Pu (from BaseTransformer)Reactive power at terminal 1 in pu (base SnRef) (receptor convention)
Dynawo.Connectors.ImPinU1Pu (from BaseTransformer)Voltage amplitude at terminal 1 in pu (base U1Nom)
Dynawo.Connectors.ImPinU2Pu (from BaseTransformer)Voltage amplitude at terminal 2 in pu (base U2Nom)
Dynawo.Connectors.ACPowerterminal1 (from BaseTransformer)Connector used to connect the transformer to the grid (terminal 1)
Dynawo.Connectors.ACPowerterminal2 (from BaseTransformer)Connector used to connect the transformer to the grid (terminal 2)
Dynawo.Connectors.ZPintapCurrent transformer tap (between 0 and NbTap - 1)

Components

TypeNameDefaultDescription
Constants.statestate (from SwitchOffTransformer)Transformer connection state
Dynawo.Types.ComplexPerUnitrTfoPu (from BaseTransformer)Transformation complex ratio in complex pu
Types.PerUnitratioTfoPuTransformation ratio in pu: U2/U1 in no load conditions