Improvement of Power System Transient Stability Using TCBR and TCSC, a Comparative Study

This paper shows the modeling and the effectiveness of two FACTS devices for transient stability improvement of power systems: The ability of flexible adjustment of Thyristor Control Breaking Resistor (TCBR) and Thyristor Controlled Series Capacitor (TCSC) can presumably increase the power systems stability. Their effect has been investigated separately and can be combined together to have a higher benefits when the power system is equipped with a compensator. Critical Clearing Time (CCT) has been used as an index for evaluated transient stability The transient stability is assessed by the criterion of relative rotor angles, using Runge-Kutta method The effectiveness of the proposed method is tested on the WSCC3 nine-bus system applied to the case of three-phase short circuit fault in one transmission line. The simulation results and their comparison are presented in this paper. Copyright (c) 2010 Praise Worthy Prize S.r.l.. - All rights reserved.