Four area Load Frequency Control of interconnected hydro-thermal power system by Intelligent PID control technique

This paper presents the dynamic performance of Load Frequency Control (LFC) of four area hydrothermal interconnected power system by using Artificial Intelligent Controller (ANN and Fuzzy) and conventional (PI & PID) control approaches. Area-1 and area-2 consists of thermal reheat power plant whereas area-3 and area-4 consists of hydro power plant. To enhance the performance of Intelligent and Conventional controller sliding surface is included. The performances of the controllers are simulated using MATLAB/SIMULINK package. A comparison of Intelligent and Conventional controller based approaches shows the superiority of proposed ANN & fuzzy based approach over PI & PID for same conditions.