Performance Assessment of Fuzzy Logic Controller for Load Frequency Control in Multi Source Multi Area System

This article confers the performance of Fuzzy logic controller for Load Frequency Control (LFC) in multi-source multi area power system. The distinct energy sources include hydro, thermal, wind and diesel power plants. The suggested multi area systems for various operating load conditions are studied to realize the deviations found in system frequency and the interchange power through tie-line. Primarily, two source single area system for a step load variation is considered and the results for PI and fuzzy logic controller are compared. The proposed system model is extended to two source two area and three source two area power system model. To observe the superiority of the proposed controller the system models are run with a 24 hour MW load variation and the results found are compared with that of PI controller. From the simulation results it is remarked that the proposed fuzzy logic controller contributes superior dynamic response over conventional PI controller.