A NOVEL APPROACH TO COMPARING DESIGN OF SINGLE AND COORDINATED PSS AND FACTS DEVICES USING GA FOR POWER SYSTEM STABILITY ENHANCEMENT

Power system stability enhancement by comparison design of single and coordinated the Power System Stabilizer (PSS), Static VAR Compensator (SVC), Thyristor Controlled Series Compensation (TCSC) and Static synchronous Compensator (STATCOM) based conventional lead-lag damping controller using Genetic Algorithm (GA) are presented in this paper. The eigenvalue analysis and the nonlinear simulation results are used for power system stability of single machine infinite bus (SMIB) system installed with PSS and FACTS controllers. It is worth mentioning that the PSS and FACTS based controllers help in damping power system oscillations after a disturbance so as to improve the power system stability. Finally, this analysis results reveal that TCSC-based stabilizers is much better than SVC based stabilizers on the damping power system oscillations. Furthermore, coordinated design of PSS and STATCOM based controllers has significant performance to promote the damping power system oscillations compared with SVC and TCSC based controllers.