// Calculate Vsh to match the tuned constant V
private Complex solveConstV(Complex vsh1, Complex vi, ConverterLF converter, double tunedValue)
throws InterpssException {
// 1. Change the bus type to be PV bus, Solve the load flow, get the Qsh to be compensated
AclfNetwork tempNetwork = CoreObjectFactory.createAclfNetwork(this.net.serialize());
tempNetwork.getAclfBus(id).setGenCode(AclfGenCode.GEN_PV);
tempNetwork.getAclfBus(id).setVoltageMag(tunedValue);
double p = tempNetwork.getAclfBus(id).getLoadP();
double q = tempNetwork.getAclfBus(id).getLoadQ();
tempNetwork.getAclfBus(id).setGenP(-p);
tempNetwork.getAclfBus(id).setLoadP(0.0);
tempNetwork.getAclfBus(id).setLoadQ(0.0);
LoadflowAlgorithm algo = CoreObjectFactory.createLoadflowAlgorithm(tempNetwork);
tempNetwork.accept(algo);
double qsh = tempNetwork.getAclfBus(id).getGenResults().getImaginary() + q;
// 2. Calculate Vsh with constantQ control, control to Qsh
Complex vsh =
solveConstQ(converter.getVth(), tempNetwork.getAclfBus(id).getVoltage(), converter, qsh);
net.getAclfBus(id)
.setVoltage(
tempNetwork
.getAclfBus(id)
.getVoltage()); // Bus voltage should be updated, otherwise there will be a non-zero
// p
// System.out.println(converter.getSij(net).getReal() + "+j" +
// converter.getSij(net).getImaginary());
err = 0.0;
return vsh;
}
// Update vsh inside the statcom converter
public void update(AclfNetwork net) throws InterpssException {
Complex vi = net.getAclfBus(id).getVoltage();
Complex vsh1 = this.converter.getVth();
if (type == StatcomControlType.ConstB) { // Control of constant shunt admittance
Complex vsh = solveConstB(vsh1, vi, this.converter, tunedValue);
this.converter.setVth(vsh);
} else if (type
== StatcomControlType.ConstQ) { // Control of constant shunt reactive power compensation
Complex vsh = solveConstQ(vsh1, vi, this.converter, tunedValue);
this.converter.setVth(vsh);
} else if (type == StatcomControlType.ConstV) { // Control of constant voltage magnitude
Complex vsh = solveConstV(vsh1, vi, this.converter, tunedValue);
this.converter.setVth(vsh);
}
Complex vsh2 = this.converter.getVth();
if (type != StatcomControlType.ConstV) err = (vsh1.subtract(vsh2)).abs();
}
