Solution of optimal power flow with facts devices using opposition-based gravitational search algorithm

Abstract

This paper presents the solution of optimal power flow (OPF) of power system with flexible AC transmission systems (FACTS) devices by using opposition-based gravitational search algorithm (OGSA). OPF problem with FACTS is solved by the way of minimizing an objective function which reflects cost of generation, emission and active power transmission loss. FACTS devices considered include thyristor controlled series capacitor and thyristor controlled phase shifter. The proposed approach has been examined and tested on the IEEE 57-bus test power system. The obtained results are compared with those reported in the literature. Simulation results demonstrate the superiority and accuracy of the proposed algorithm. Considering the quality of the solution obtained, the proposed algorithm seems to be effective and robust to solve the studied problem.