Multi-Agent-Based Particle Swarm Optimization Approach for PSS designing in multi-machine power systems

In this paper the design of multi-machine Power System Stabilizers (PSSs) by using Multi-Agent Particle Swarm Optimization (MAPSO) is presented. The optimum parameters of PSSs will be obtained by MAPSO and the results will be compared with PSO algorithm which eigenvalue analysis is used for comparison. The aim of the optimization problem is to shift electro-mechanical modes of all machines to the left side of the s-plane as far as possible with considering stability. The proposed method is confirmed by obtained simulation results of a three-machine power system under different operating conditions.