Concordant controllers based on FACTS and FPSS for solving wide-area in multi-machine power system

In this paper, a new controller based on combination of Fuzzy Power System Stabilizer (FPSS) and Flexible Ac Transmission Systems (FACTS) proposed in multi machine power system environment. In this model, the power system oscillation damping has been analyzed by considering the wide area control method. A fuzzy controller is a nonlinear controller and it is not so sensitive to system topology, parameter and operating condition changes as the conventional ones. According to wide area power system complexity and variation of the loads and network conditions, FPSS has been considered in this paper. Where, this structure is based on fewer fuzzy rules and less computational burden. Furthermore, the proposed FACTS controller has been improved by Vector Evaluated Honey Bee Mating Optimization (VEHBMO) as an optimization problem. Effectiveness of the proposed method has been applied over two case studies of single-machine infinite-bus (SMIB) and ten machine 39 bus New England power system. Obtained results demonstrate the superiority of proposed strategy.