Multi Machine PSS Design by using Meta Heuristic Optimization Techniques

Designing power system stabilizer (PSS) in multi machine power systems has always been reported as a critical issue; because, unsuitable adjusting of PSSs may lead to stability decreasing instead of stability improvement. Therefore, a coordinated PSS design should be carried out in multi machine power systems. In this paper, all PSSs are simultaneously tuned in a multi machine power system. A Meta heuristic optimization technique namely artificial bee colony (ABC) algorithm is used to adjust the PSSs parameters. Non linear simulations are carried out to validate of results. Simulation results clearly verify that the proposed technique enhances the dynamic stability of the system considering uncertainties.