Optimal design of Load Frequency Controller for a Single Area System using Fire Fly Algorithm

In this article the load-frequency control (LFC) for a single-area power system is presented. The effective control is achieved by the optimal tuning of proportional-integral-derivative (PID) controller parameters. The Firefly Algorithm (FFA) is used to tune the parameters of the controller. The integral square error of the frequency deviation is used as an objective function during the process of optimization of the parameters. The frequency deviation of the power power system is observerved without controller, controller used in literature and that of with the proposed Firefly Algorithm controller (FFA-PID). The frequency response compared in terms of step information such as rise time, settling time, peak time and undershoot and found that the proposed FFA-PID is providing encouraging results.