PSO tuned combined optimal fuzzy controller for AGC of two area interconnected power system

In this work automatic generation control (AGC) of two-area interconnected power system has been studied using particle swarm optimization (PSO) tuned combined optimal fuzzy controller. As a consequence of continual load variation, the frequency and tie-line power deviate over time and these transients are to be minimized using different controllers. A combined optimal fuzzy controller has been designed and proposed to ascertain zero steady state frequency deviation and tie-line power flow deviation under all operating conditions. The proposed controller has been obtained by feeding the output of the optimal controller to a fuzzy controller. PSO has been used to optimize the parameters of the fuzzy controller. The performance of the proposed controller has been compared with that of the combined optimal fuzzy controller. The simulation results indicate that better control performance in terms of overshoot and settling time can be obtained by the PSO tuned combined optimal fuzzy controller.