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CHAOTIC-PSO APPROACH FOR COORDINATED DESIGN OF PSS AND SSSC BASED CONTROLLER

In this paper coordination scheme to improve the stability of a power system by optimal design of power system stabilizer and Static Synchronous Series Compensator (SSSC) based controller is presented. The coordinated design problem is formulated as an optimization problem and Chaotic Particle Swarm Optimization (CPSO) is employed to search for the optimal controller parameters. The performance of the proposed controllers is evaluated for both single-machine infinite-bus power system and multi-machine power system. It is observed that the proposed controllers provide efficient damping to power system oscillations under operating conditions and under disturbances. Further, simulation results show that, in a multi-machine power system, the modal oscillations are effectively damped by the proposed approach.