POWER SYSTEM TRANSIENT STABILITY IMPROVEMENT OF TWO MACHINE SYSTEM USING FUZZY LOGIC CONTROLLED STATCOM

A static synchronous compensator is one of the FACTS devices used to improve the transient stability of the power system. Flexible AC Transmission System (FACTS) devices are found to be very effective in a transmission network for better utilization of its existing facilities without sacrificing the desired stability margin. The effect of STATCOM for improving the stability of the two machine power system at during fault condition is investigated. In this paper a Mamdani based Fuzzy logic controller is designed, and Simulation results show that STATCOM is effective in midpoint voltage regulation on transmission line. The study is thereby simulated using the MATLAB/SIMULINK software