Comparative study of load frequency control using PID and FGPI controller

LFC is incorporated in order to maintain the system frequency deviations and tie-line power exchange with the areas interconnected with the power system within the nominal values. The different configurations of models and control techniques/ strategies that are applied for load frequency have been addressed which are applicable for generation systems. An interconnected three area system is designed and simulated by using fuzzy controller for improved performance parameters like settling time, overshoot value, and undershoot value and maximum range over the conventional PID controller. The control methodology assure that the steady state error of frequency and exchange of tie-line power of area unit are maintained within prescribed tolerance limits. The working of the three area system incorporating these controllers are simulated using MATLAB/SIMULINK package.