DAMPING OF POWER SWING BY A SSSC BASED POWER SYSTEM STABILIZERS USING HYBRID PSO AND GSA ALGORITHMS

In this paper, designing and application of an optimal supplementary controller for damping of power swing in a weakly connected power system. The proposed stabilizer is a SSSC based controller that is designed based on a hybrid PSO and GSA algorithm. The behavior of proposed controller under different loading operating conditions is also investigated. The effectiveness of proposed controller on enhancing dynamic stability is tested through modal analysis and time domain simulation. Also, nonlinear and electrical simulation results show the validity and effectiveness of the proposed control schemes over a wide range of loading conditions. It is also observed that the proposed SSSC based damping stabilizers greatly enhance the power system transient stability. The simulation results of coordinated design of stabilizer based on ? and m is also presented and discussed. The system performance analysis under different operating conditions shows that the ?-based controller is superior to the m-based controller.