Fuzzy-Proportional Integral Controller for an AGC in a Single Area Power System

In the present work, the intelligent load frequency controllers have been developed to regulate the power output and system frequency by controlling the speed of the generator with the help of fuel rack position control. This paper presents the implementation of fuzzy-proportional integral controller (FPIC) for controlling AGC in a single area power system. The aim of the proposed controller is to restore the frequency in a very smooth way to its nominal value in the shortest possible time whenever there is any change in the load demand etc. The action of this controller provides a satisfactory balance between frequency overshoot and transient oscillations with zero steady-state error. It is found that the proposed controller exhibits satisfactorily well dynamic performance and overcome all possible drawbacks associated with conventional PI controller.