2 and 3 windings transformer representation in substation or zone diagram

[geofjamg]

• Do you want to request a feature or report a bug?
  Feature

• What is the current behavior?
  2 and 3 windings representation has been correctly designed for voltage level diagram. With substation diagram (and soon zone diagram), representation looks like a little bit strange as the windings symbole is duplicated at each end of the transformer. Consequently coloration is also very confusing.

Here is an example with a 3 windings transformer but same apply for 2 windings:

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem
  Here is the xiidm sample:

<?xml version="1.0" encoding="UTF-8"?>
<iidm:network xmlns:iidm="http://www.itesla_project.eu/schema/iidm/1_0" id="three-windings-transformer" caseDate="2018-03-05T13:30:30.486+01:00" forecastDistance="0" sourceFormat="test">
    <iidm:substation id="SUBSTATION" country="FR">
        <iidm:voltageLevel id="VL_132" nominalV="132.0" lowVoltageLimit="118.8" highVoltageLimit="145.2" topologyKind="BUS_BREAKER">
            <iidm:busBreakerTopology>
                <iidm:bus id="BUS_132" v="133.584" angle="-9.62"/>
                <iidm:bus id="BUS_133" v="133.584" angle="-9.62"/>
            </iidm:busBreakerTopology>
            <iidm:load id="LOAD_132" loadType="UNDEFINED" p0="7.6" q0="1.6" bus="BUS_132" connectableBus="BUS_132"/>
            <iidm:load id="LOAD_133" loadType="UNDEFINED" p0="7.6" q0="1.6" bus="BUS_133" connectableBus="BUS_133"/>
        </iidm:voltageLevel>
        <iidm:voltageLevel id="VL_33" nominalV="33.0" lowVoltageLimit="29.7" highVoltageLimit="36.3" topologyKind="BUS_BREAKER">
            <iidm:busBreakerTopology>
                <iidm:bus id="BUS_33" v="34.881" angle="-15.24"/>
                <iidm:bus id="BUS_333" v="34.881" angle="-15.24"/>
            </iidm:busBreakerTopology>
            <iidm:load id="LOAD_33" loadType="UNDEFINED" p0="11.2" q0="7.5" bus="BUS_33" connectableBus="BUS_33" p="11.2" q="7.5"/>
            <iidm:load id="LOAD_333" loadType="UNDEFINED" p0="11.2" q0="7.5" bus="BUS_333" connectableBus="BUS_333" p="11.2" q="7.5"/>
        </iidm:voltageLevel>
        <iidm:voltageLevel id="VL_11" nominalV="11.0" lowVoltageLimit="9.9" highVoltageLimit="12.1" topologyKind="BUS_BREAKER">
            <iidm:busBreakerTopology>
                <iidm:bus id="BUS_11" v="11.781" angle="-15.24"/>
                <iidm:bus id="BUS_111" v="11.781" angle="-15.24"/>
            </iidm:busBreakerTopology>
            <iidm:load id="LOAD_11" loadType="UNDEFINED" p0="0.0" q0="-10.6" bus="BUS_11" connectableBus="BUS_11" p="0.0" q="-10.6"/>
            <iidm:shunt id="SELF_11" bPerSection="-0.15" maximumSectionCount="1" currentSectionCount="0" bus="BUS_111" connectableBus="BUS_111" q="-0">
              <property name="qMax" value="-150"/>
            </iidm:shunt>
        </iidm:voltageLevel>
        <iidm:threeWindingsTransformer id="3WT" r1="17.424" x1="1.7424" g1="0.00573921028466483" b1="5.73921028466483E-4" ratedU1="132.0" r2="1.089" x2="0.1089" ratedU2="33.0" r3="0.121" x3="0.0121" ratedU3="11.0" bus1="BUS_132" connectableBus1="BUS_132" voltageLevelId1="VL_132" bus2="BUS_33" connectableBus2="BUS_33" voltageLevelId2="VL_33" bus3="BUS_11" connectableBus3="BUS_11" voltageLevelId3="VL_11">
            <iidm:ratioTapChanger2 lowTapPosition="0" tapPosition="2" loadTapChangingCapabilities="true" regulating="true" targetV="33.0">
                <iidm:terminalRef id="LOAD_33"/>
                <iidm:step r="0.9801" x="0.09801" g="0.08264462809917356" b="0.008264462809917356" rho="0.9"/>
                <iidm:step r="1.089" x="0.1089" g="0.09182736455463728" b="0.009182736455463728" rho="1.0"/>
                <iidm:step r="1.1979" x="0.11979" g="0.10101010101010101" b="0.0101010101010101" rho="1.1"/>
            </iidm:ratioTapChanger2>
            <iidm:ratioTapChanger3 lowTapPosition="0" tapPosition="0" loadTapChangingCapabilities="true" regulating="true" targetV="11.0">
                <iidm:terminalRef id="LOAD_11"/>
                <iidm:step r="0.1089" x="0.01089" g="0.8264462809917356" b="0.08264462809917356" rho="0.9"/>
                <iidm:step r="0.121" x="0.0121" g="0.8264462809917356" b="0.08264462809917356" rho="1.0"/>
                <iidm:step r="0.1331" x="0.01331" g="0.9090909090909092" b="0.09090909090909093" rho="1.1"/>
            </iidm:ratioTapChanger3>
            <iidm:currentLimits1 permanentLimit="1000.0">
                <iidm:temporaryLimit name="20'" acceptableDuration="1200" value="1200.0"/>
                <iidm:temporaryLimit name="10'" acceptableDuration="600" value="1400.0"/>
            </iidm:currentLimits1>
            <iidm:currentLimits2 permanentLimit="100.0">
                <iidm:temporaryLimit name="20'" acceptableDuration="1200" value="120.0"/>
                <iidm:temporaryLimit name="10'" acceptableDuration="600" value="140.0"/>
            </iidm:currentLimits2>
            <iidm:currentLimits3 permanentLimit="10.0">
                <iidm:temporaryLimit name="20'" acceptableDuration="1200" value="12.0"/>
                <iidm:temporaryLimit name="10'" acceptableDuration="600" value="14.0"/>
            </iidm:currentLimits3>
        </iidm:threeWindingsTransformer>
    </iidm:substation>
</iidm:network>

• What is the expected behavior?
  Here is a picture of what should be rendered in substation/zone mode for a 3 windings transformer:

Ideally, we should be able to precise in the component library if a component is a single terminal or multiple terminal and automatically in case of multi-terminal component adapt rendering like in the previous picture. We must not hard coded a specific behaviour for transformers, but be generic for multi terminal components.

• What is the motivation / use case for changing the behavior?

• Please tell us about your environment:

  • PowSyBl Version: ...
  • OS Version: ...

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, spectrum, etc)

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