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Add unit test with VSC voltage control and targetP = 0 #1002

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merged 2 commits into from
Mar 26, 2024
Merged

Add unit test with VSC voltage control and targetP = 0 #1002

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e68eca1
test to ensure VSC control tension even when there is no active power…
vidaldid-rte Mar 25, 2024
73a1e35
Small clean.
annetill Mar 26, 2024
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70 changes: 70 additions & 0 deletions src/test/java/com/powsybl/openloadflow/ac/AcLoadFlowVscTest.java
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@
package com.powsybl.openloadflow.ac;

import com.powsybl.iidm.network.*;
import com.powsybl.iidm.network.extensions.HvdcAngleDroopActivePowerControl;
import com.powsybl.iidm.network.extensions.HvdcAngleDroopActivePowerControlAdder;
import com.powsybl.loadflow.LoadFlow;
import com.powsybl.loadflow.LoadFlowParameters;
Expand Down Expand Up @@ -398,4 +399,73 @@ void testHvdcAndGenerator() {
assertActivePowerEquals(-2.0, network.getGenerator("g4").getTerminal());
assertActivePowerEquals(-2.047, network.getGenerator("g1").getTerminal());
}

@Test
void testVscVoltageControlWithZeroTargetP() {
Network network = HvdcNetworkFactory.createHvdcLinkedByTwoLinesAndSwitch(HvdcConverterStation.HvdcType.VSC);
LoadFlow.Runner loadFlowRunner = new LoadFlow.Runner(new OpenLoadFlowProvider(new DenseMatrixFactory()));
// Set specific voltage setPoints to the stations
double vcs2 = 397;
double vcs3 = 401;
network.getVscConverterStation("cs2").setVoltageSetpoint(vcs2);
network.getVscConverterStation("cs3").setVoltageSetpoint(vcs3);

// shut down active power flow in HVDC
network.getHvdcLine("hvdc23").setActivePowerSetpoint(0);
network.getHvdcLine("hvdc23").getExtension(HvdcAngleDroopActivePowerControl.class).setDroop(0).setP0(0);

LoadFlowParameters p = new LoadFlowParameters();

// without AC emulation
p.setHvdcAcEmulation(false);
LoadFlowResult result = loadFlowRunner.run(network, p);

assertTrue(result.isFullyConverged());
assertActivePowerEquals(0, network.getVscConverterStation("cs2").getTerminal());
assertVoltageEquals(vcs2, network.getVscConverterStation("cs2").getTerminal().getBusView().getBus());
assertActivePowerEquals(0, network.getVscConverterStation("cs3").getTerminal());
assertVoltageEquals(vcs3, network.getVscConverterStation("cs3").getTerminal().getBusView().getBus());

// with AC emulation
p.setHvdcAcEmulation(true);
result = loadFlowRunner.run(network, p);

assertTrue(result.isFullyConverged());
assertActivePowerEquals(0, network.getVscConverterStation("cs2").getTerminal());
assertVoltageEquals(vcs2, network.getVscConverterStation("cs2").getTerminal().getBusView().getBus());
assertActivePowerEquals(0, network.getVscConverterStation("cs3").getTerminal());
assertVoltageEquals(vcs3, network.getVscConverterStation("cs3").getTerminal().getBusView().getBus());
}

@Test
void testVscVoltageControlWithOneSideDisconnected() {
Network network = HvdcNetworkFactory.createHvdcLinkedByTwoLinesAndSwitch(HvdcConverterStation.HvdcType.VSC);
LoadFlow.Runner loadFlowRunner = new LoadFlow.Runner(new OpenLoadFlowProvider(new DenseMatrixFactory()));
// Set specific voltage setPoints to the stations
double vcs2 = 397;
double vcs3 = 401;
network.getVscConverterStation("cs2").setVoltageSetpoint(vcs2);
network.getVscConverterStation("cs3").setVoltageSetpoint(vcs3);

// Disconnect line at HVDCoutput
Line l34 = network.getLine("l34");
l34.getTerminals().stream().forEach(Terminal::disconnect);

LoadFlowParameters p = new LoadFlowParameters();

// without AC emulation
p.setHvdcAcEmulation(false);
LoadFlowResult result = loadFlowRunner.run(network, p);

assertTrue(result.isFullyConverged());
assertActivePowerEquals(0, network.getVscConverterStation("cs2").getTerminal());
assertVoltageEquals(vcs2, network.getVscConverterStation("cs2").getTerminal().getBusView().getBus());

// with AC emulation
p.setHvdcAcEmulation(true);
result = loadFlowRunner.run(network, p);

assertActivePowerEquals(0, network.getVscConverterStation("cs2").getTerminal());
assertVoltageEquals(vcs2, network.getVscConverterStation("cs2").getTerminal().getBusView().getBus());
}
}