Performance Comparison of Fuzzy Gain Scheduling based LFC Controller in Deregulated AGC of a Multi Area System Incorporating Wind Energy

In this paper a fuzzy gain scheduling based controller for multi area multi source power system is presented. Area-1 comprises of thermal and hydro plant and area-2 consists of thermal and hydro power plant with wind turbine generator and both areas are connected via tie line. Frequency deviation caused by load fluctuation is controlled by PI controller. For optimal response the PI controller is tuned via Ziegler Nichols (ZN) technique and Fuzzy Gain Scheduling (FGS) method. From MATLAB simulations it is observed that FGS based PI controller outperforms ZN tuned PI and conventional PI. The proposed model is further investigated with an integrated wind turbine generator and here also superior performance of fuzzy gain scheduling based PI compared to other control techniques is observed.