## Computer analysis of power systemsDescribes the main computer modeling techniques that constitute the framework of modern power system analysis. After describing the main computational and transmission system developments influencing power system analysis, the book covers load or power flow, AC system faults and the electromechanical behavior of power systems. Dynamic models of power system plants and their use in multi-machine transient stability analysis are discussed. Chapters also cover the electromagnetic transients program, harmonic flow analysis, power system security and optimization analysis. Recent advances in interactive power system analysis and developments in computer graphics are also presented. The appendices cover the more basic aspects of power system theory, matrix analysis and numerical techniques to help newcomers pick up the relevant background. |

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### Contents

LOAD FLOW | 7 |

THREEPHASE LOAD FLOW | 42 |

A C D C LOAD FLOW | 93 |

Copyright | |

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### Common terms and phrases

A-stable a.c. system admittance matrix algorithm branch busbar voltage calculated capacitance characteristic components constant converter transformer d.c. link d.c. voltage decoupled derived diagram differential equations direct current effect elements equivalent circuit fast-decoupled fault Figure frequency function IEEE IEEE Trans illustrated in Fig induction injected current input inverter Jacobian matrix linear load flow matrix equation mode mutually coupled MVAR negative-sequence Newton method Newton-Raphson nodal node nonlinear number of iterations operation ordinary differential equations parameters phase positive sequence positive-sequence power flow primitive network problem reactance reactive power reference relay representation represented rotor saturation Section series impedance shown in Fig shunt admittance simulation single-phase skin effect solution solved specified stability studies steady-state step length subsystem subtransient switching symmetrical symmetrical component synchronous machine techniques terminal busbar terminal voltage three-phase transformer connection transmission line trapezoidal method turbine unbalance unbalanced valve variables vector voltage magnitudes zero zero-sequence