A novel load-frequency control scheme applying fuzzy logic technique for two-area interconnected power systems with renewable energy sources

Abstract

This paper proposes a novel intelligent control algorithm in dealing with the load-frequency control problem of a two-area interconnected thermal power system. This control methodology applying a modified PID controller with three parameters tuned by a reasonable fuzzy logic inference structure. The control plant of this study is a two – area interconnected electric thermal power grid model using reheat and non-reheat turbines together with renewable energy sources such as wind power and solar energy. This model is mathematically established at first and the load-frequency control solution employing the proposed fuzzy logic-based PID controllers is implemented successfully in MATLAB/Simulink environment. The numerical simulation results obtained in various scenarios compared with those of the conventional regulators and a number of existed intelligent load-frequency counterparts demonstrate the high effectiveness and applicability of the proposed control strategy.