Package com.powsybl.cgmes.conversion.elements.transformers

Class TwoWindingsTransformerConversion

  • All Implemented Interfaces:
    EquipmentAtBoundaryConversion
    public class TwoWindingsTransformerConversion
extends AbstractConductingEquipmentConversion
implements EquipmentAtBoundaryConversion
    TwoWindingsTransformer Cgmes Conversion

    Cgmes conversion for transformers (two and three windings) is divided into four stages: load, interpret, convert and set.

    Load
    Native CGMES data is loaded from the triple store query and is put in the CGMES model object (CgmesT2xModel).

    Interpret
    CgmesT2xModel data is mapped to a more general two windings transformer model (InterpretedT2xModel) according to a predefined configured alternative. It is an elemental process as the only objective is to put Cgmes data in the fields of the general two windings transformer model. All possible alternatives and the default one are defined in conversion class. See Conversion
    InterpretedT2xModel supports ratioTapChanger and phaseTapChanger at each end. Shunt admittances can be defined at both ends and allows to specify the end of the structural ratio.

    Convert
    Converts the interpreted model (InterpretedT2xModel) to the converted model object (ConvertedT2xModel).
    The ConvertedT2xModel only allows to define ratioTapChanger and phaseTapChanger at end1. Shunt admittances and structural ratio must be also at end1.
    To do this process the following methods are used:
    moveTapChangerFrom2To1: To move a tapChanger from end2 to end1
    combineTapChanger: To reduce two tapChangers to one
    moveRatioFrom2To1: To move structural ratio from end2 to end1
    Finally shunt admittance of both ends are added to end1. This step is an approximation and only will be possible to reproduce the exact case result if Cgmes shunts are defined at end1 or are split and the LoadflowParameter splitShuntAdmittance option is selected.
    See TapChangerConversion

    Set
    A direct map from ConvertedT2xModel to IIDM model

    Author:
    Luma Zamarreño , José Antonio Marqués