## Electrical Power System Analysis |

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### Contents

POW tem N k Matr | 1 |

Per Unit System | 118 |

Symmetrical Components | 137 |

Mutually Coupled Branches in Zeus | 171 |

Symmetrical Fault Analysis | 220 |

metrical Fault An | 258 |

Unsymmetrical Faults Analysis Using Bus Impedance Matrix | 271 |

Stability Limits | 298 |

### Common terms and phrases

3-phase admittance matrix Amps base kVA base values Base voltage bus bars bus impedance matrix bus voltage buses calculated circuit breakers complex power Compute connected decoupled Determine diagonal elements equivalent circuit fault current fault occurs Gauss-Seidel method graph ground fault incidence matrix infinite bus Jacobian Jacobian matrix L-G fault line to ground machine modified motor mutual coupling mutual impedance N-R method negative and zero negative sequence neutral node partial network phase angle phasors positive sequence current power system network primitive network Problem reactance reactive power reactors reference bus rotor sequence components sequence voltage short circuit current short circuit MVA shown in figure shunt slack bus ſº stability limit steady state stability Substituting swing equation symmetrical components symmetrical fault synchronous three phase transformer transmission line unbalanced unsymmetrical Xij-i YBus ZBus zero sequence currents zero sequence network Zeus