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#include "Fault.h"
Fault::Fault()
: ElectricCalculation()
{
}
Fault::Fault(std::vector<Element*> elementList) { GetElementsFromList(elementList); }
Fault::~Fault() {}
bool Fault::RunFaultCalculation(double systemPowerBase)
{
int numberOfBuses = static_cast<int>(m_busList.size());
if(numberOfBuses == 0) {
m_errorMsg = _("There is no buses in the system.");
return false;
}
// Get adimittance matrices.
std::vector<std::vector<std::complex<double> > > yBusPos;
GetYBus(yBusPos, systemPowerBase, POSITIVE_SEQ, true);
std::vector<std::vector<std::complex<double> > > yBusNeg;
GetYBus(yBusNeg, systemPowerBase, NEGATIVE_SEQ, true);
std::vector<std::vector<std::complex<double> > > yBusZero;
GetYBus(yBusZero, systemPowerBase, ZERO_SEQ, true);
// Calculate the impedance matrices.
if(!InvertMatrix(yBusPos, m_zBusPos)) {
m_errorMsg = _("Fail to invert the positive sequence admittance matrix.");
return false;
}
if(!InvertMatrix(yBusNeg, m_zBusNeg)) {
m_errorMsg = _("Fail to invert the negative sequence admittance matrix.");
return false;
}
if(!InvertMatrix(yBusZero, m_zBusZero)) {
m_errorMsg = _("Fail to invert the zero sequence admittance matrix.");
return false;
}
// Pre-fault voltages (power flow solution).
std::vector<std::complex<double> > preFaultVoltages;
// Get fault parameters.
int fNumber = -1;
FaultData fType = FAULT_THREEPHASE;
FaultData fLocation = FAULT_LINE_A;
std::complex<double> fImpedance = std::complex<double>(0.0, 0.0);
for(auto it = m_busList.begin(), itEnd = m_busList.end(); it != itEnd; ++it) {
Bus* bus = *it;
BusElectricalData data = bus->GetEletricalData();
preFaultVoltages.push_back(data.voltage);
if(data.hasFault) {
fNumber = data.number;
fType = data.faultType;
fLocation = data.faultLocation;
fImpedance = std::complex<double>(data.faultResistance, data.faultReactance);
}
}
if(fNumber == -1) {
m_errorMsg = _("There is no fault in the system.");
return false;
}
// Fault calculation.
std::complex<double> fCurrentPos = std::complex<double>(0.0, 0.0);
std::complex<double> fCurrentNeg = std::complex<double>(0.0, 0.0);
std::complex<double> fCurrentZero = std::complex<double>(0.0, 0.0);
std::complex<double> preFaultVoltage = preFaultVoltages[fNumber];
std::complex<double> a = std::complex<double>(-0.5, 0.866025403784);
std::complex<double> a2 = std::complex<double>(-0.5, -0.866025403784);
switch(fType) {
case FAULT_THREEPHASE: {
fCurrentPos = preFaultVoltage / (m_zBusPos[fNumber][fNumber] + fImpedance);
} break;
case FAULT_2LINE: {
fCurrentPos = preFaultVoltage / (m_zBusPos[fNumber][fNumber] + m_zBusNeg[fNumber][fNumber] + fImpedance);
switch(fLocation) {
case FAULT_LINE_A: {
fCurrentNeg = -a2 * fCurrentPos;
} break;
case FAULT_LINE_B: {
fCurrentNeg = -fCurrentPos;
} break;
case FAULT_LINE_C: {
fCurrentNeg = -a * fCurrentPos;
} break;
default:
break;
}
} break;
case FAULT_2LINE_GROUND: {
std::complex<double> z1 = m_zBusPos[fNumber][fNumber];
std::complex<double> z2 = m_zBusNeg[fNumber][fNumber];
std::complex<double> z0 = m_zBusZero[fNumber][fNumber];
std::complex<double> zf_3 = std::complex<double>(3.0, 0.0) * fImpedance;
fCurrentPos = (preFaultVoltage * (z2 + z0 + zf_3)) / (z1 * z2 + z2 * z0 + z2 * zf_3 + z1 * z0 + z1 * zf_3);
switch(fLocation) {
case FAULT_LINE_A: {
fCurrentNeg = -a2 * ((preFaultVoltage - z1 * fCurrentPos) / z2);
fCurrentZero = -a * ((preFaultVoltage - z1 * fCurrentPos) / (z0 + zf_3));
} break;
case FAULT_LINE_B: {
fCurrentNeg = -((preFaultVoltage - z1 * fCurrentPos) / z2);
fCurrentZero = -((preFaultVoltage - z1 * fCurrentPos) / (z0 + zf_3));
} break;
case FAULT_LINE_C: {
fCurrentNeg = -a * ((preFaultVoltage - z1 * fCurrentPos) / z2);
fCurrentZero = -a2 * ((preFaultVoltage - z1 * fCurrentPos) / (z0 + zf_3));
} break;
default:
break;
}
} break;
case FAULT_LINE_GROUND: {
fCurrentPos =
preFaultVoltage / (m_zBusPos[fNumber][fNumber] + m_zBusNeg[fNumber][fNumber] +
m_zBusZero[fNumber][fNumber] + std::complex<double>(3.0, 0.0) * fImpedance);
switch(fLocation) {
case FAULT_LINE_A: {
fCurrentNeg = fCurrentPos;
fCurrentZero = fCurrentPos;
} break;
case FAULT_LINE_B: {
fCurrentNeg = a * fCurrentPos;
fCurrentZero = a2 * fCurrentPos;
} break;
case FAULT_LINE_C: {
fCurrentNeg = a2 * fCurrentPos;
fCurrentZero = a * fCurrentPos;
} break;
default:
break;
}
} break;
default:
break;
}
// Convert sequence currents to ABC. [Iabc] = [A]*[I012]
m_fCurrentA = fCurrentPos + fCurrentNeg + fCurrentZero;
m_fCurrentB = fCurrentPos + a2 * fCurrentNeg + a * fCurrentZero;
m_fCurrentC = fCurrentPos + a * fCurrentNeg + a2 * fCurrentZero;
// Pos-fault voltages calculation
m_posFaultVoltagePos.clear();
m_posFaultVoltageNeg.clear();
m_posFaultVoltageZero.clear();
m_posFaultVoltageA.clear();
m_posFaultVoltageB.clear();
m_posFaultVoltageC.clear();
for(int i = 0; i < numberOfBuses; ++i) {
m_posFaultVoltagePos.push_back(preFaultVoltages[i] - m_zBusPos[i][fNumber] * fCurrentPos);
m_posFaultVoltageNeg.push_back(-m_zBusNeg[i][fNumber] * fCurrentNeg);
m_posFaultVoltageZero.push_back(-m_zBusZero[i][fNumber] * fCurrentZero);
// V012 -> Vabc
m_posFaultVoltageA.push_back(m_posFaultVoltagePos[i] + m_posFaultVoltageNeg[i] + m_posFaultVoltageZero[i]);
m_posFaultVoltageB.push_back(
m_posFaultVoltagePos[i] + a2 * m_posFaultVoltageNeg[i] + a * m_posFaultVoltageZero[i]);
m_posFaultVoltageC.push_back(
m_posFaultVoltagePos[i] + a * m_posFaultVoltageNeg[i] + a2 * m_posFaultVoltageZero[i]);
}
UpdateElementsFault(systemPowerBase);
return true;
}
void Fault::UpdateElementsFault(double systemPowerBase)
{
std::complex<double> a = std::complex<double>(-0.5, 0.866025403784);
std::complex<double> a2 = std::complex<double>(-0.5, -0.866025403784);
for(auto it = m_busList.begin(), itEnd = m_busList.end(); it != itEnd; ++it) {
Bus* bus = *it;
auto data = bus->GetEletricalData();
if(data.hasFault) {
data.faultCurrent[0] = m_fCurrentA;
data.faultCurrent[1] = m_fCurrentB;
data.faultCurrent[2] = m_fCurrentC;
} else {
data.faultCurrent[0] = data.faultCurrent[1] = data.faultCurrent[2] = std::complex<double>(0.0, 0.0);
}
data.faultVoltage[0] = m_posFaultVoltageA[data.number];
data.faultVoltage[1] = m_posFaultVoltageB[data.number];
data.faultVoltage[2] = m_posFaultVoltageC[data.number];
bus->SetElectricalData(data);
}
for(auto it = m_lineList.begin(), itEnd = m_lineList.end(); it != itEnd; ++it) {
Line* line = *it;
if(line->IsOnline()) {
int n1 = static_cast<Bus*>(line->GetParentList()[0])->GetEletricalData().number;
int n2 = static_cast<Bus*>(line->GetParentList()[1])->GetEletricalData().number;
auto data = line->GetElectricalData();
std::complex<double> vPos[2] = { m_posFaultVoltagePos[n1], m_posFaultVoltagePos[n2] };
std::complex<double> vNeg[2] = { m_posFaultVoltageNeg[n1], m_posFaultVoltageNeg[n2] };
std::complex<double> vZero[2] = { m_posFaultVoltageZero[n1], m_posFaultVoltageZero[n2] };
std::complex<double> zPos(data.resistance, data.indReactance);
std::complex<double> bPos(0.0, data.capSusceptance / 2.0);
std::complex<double> zZero(data.zeroResistance, data.zeroIndReactance);
std::complex<double> bZero(0.0, data.zeroCapSusceptance / 2.0);
std::complex<double> lineCurrentPos[2];
std::complex<double> lineCurrentNeg[2];
std::complex<double> lineCurrentZero[2];
lineCurrentPos[0] = ((vPos[0] - vPos[1]) / zPos) + (vPos[0] * bPos);
lineCurrentNeg[0] = ((vNeg[0] - vNeg[1]) / zPos) + (vNeg[0] * bPos);
lineCurrentZero[0] = ((vZero[0] - vZero[1]) / zZero) + (vZero[0] * bZero);
lineCurrentPos[1] = ((vPos[1] - vPos[0]) / zPos) + (vPos[1] * bPos);
lineCurrentNeg[1] = ((vNeg[1] - vNeg[0]) / zPos) + (vNeg[1] * bPos);
lineCurrentZero[1] = ((vZero[1] - vZero[0]) / zZero) + (vZero[1] * bZero);
data.faultCurrent[0][0] = lineCurrentPos[0] + lineCurrentNeg[0] + lineCurrentZero[0];
data.faultCurrent[1][0] = lineCurrentPos[0] + a2 * lineCurrentNeg[0] + a * lineCurrentZero[0];
data.faultCurrent[2][0] = lineCurrentPos[0] + a * lineCurrentNeg[0] + a2 * lineCurrentZero[0];
data.faultCurrent[0][1] = lineCurrentPos[1] + lineCurrentNeg[1] + lineCurrentZero[1];
data.faultCurrent[1][1] = lineCurrentPos[1] + a2 * lineCurrentNeg[1] + a * lineCurrentZero[1];
data.faultCurrent[2][1] = lineCurrentPos[1] + a * lineCurrentNeg[1] + a2 * lineCurrentZero[1];
line->SetElectricalData(data);
}
}
for(auto it = m_transformerList.begin(), itEnd = m_transformerList.end(); it != itEnd; ++it) {
Transformer* transformer = *it;
}
}
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