Package com.powsybl.iidm.network

Interface ThreeWindingsTransformer

  • All Superinterfaces:
    Connectable<ThreeWindingsTransformer>, Extendable<ThreeWindingsTransformer>, Identifiable<ThreeWindingsTransformer>
    All Known Implementing Classes:
    ThreeWindingsTransformerAdapter
    public interface ThreeWindingsTransformer
extends Connectable<ThreeWindingsTransformer>
    A Three Windings Power Transformer.

    The equivalent star model used is:

    Usually side 1 is the primary (high voltage), side 2 is the secondary (medium voltage) and side 3 the tertiary voltage (low voltage).

    g1, g2, g3 and b1, b2, b3 unit is siemens.

    r1, r2, r3, x1, x2 and x3 unit is ohm.

    A Three Windings Transformer is connected to three voltage levels (side 1, side 2 and side 3) that belong to the same substation. It has three identical legs. Each leg has the same model of a Two Windings Power Transformer.

    All three legs may have a Ratio Tap Changer and a Phase Tap Changer. A warning is emitted if a leg has both Ratio and Phase Tap Changers.

    Only one Tap Changer is allowed to be regulating on the equipment. An exception is thrown if two or more regulating controls are enabled.

    Characteristics

    Attribute Type Unit Required Defaut value Description
    Id String - yes - Unique identifier of the transformer
    Name String - yes - Human-readable name of the transformer
    RatedU0 double kV yes - The rated voltage at the star bus
    Leg1 ThreeWindingsTransformer.Leg - yes - The leg at the primary side
    Leg2 ThreeWindingsTransformer.Leg - yes - The leg at the secondary side
    Leg3 ThreeWindingsTransformer.Leg - yes - The leg at the tertiary side

    To create a three windings transformer, see ThreeWindingsTransformerAdder

    Author:
    Geoffroy Jamgotchian
    See Also:
    RatioTapChanger, PhaseTapChanger, ThreeWindingsTransformerAdder