A Fuzzy Approach of Autonomous Power Generating Systems

Abstract

In this paper,an fuzzy approach for determining the optimal values for the proportional-integral(PI) controller parameters of load frequency control(LFC) Automatic voltage regulator(AVR) system for single area power system using the Fuzzy Gain Scheduled proportional-integral controller (FGSPIC) techniques is presented. The LFC loop controls real power and frequency and AVR loop controls reactive power and voltage. Due to rising and falling power demand, the real and reactive power balance is harmed, hence frequency and voltage get deviated from nominal value. This necessitates designing of an accurate and fast controller to maintain the system parameters at nominal value.atahe main purpose of system generation control is to balance the system generation against the load and losses so that the desired frequency and power interchange between neighbouring systems are maintained.This work demonstrates the application of fuzzy method to search efficiently optimal PI controller parameters of LFC and AVR system. The proposed method had superior features like, stable convergence characteristics, easy implementation and good computational efficiency. The simulation results demonstrate the effectiveness of the designed system in terms of reducing settling time, overshoot and oscilllations.This results are compared with conventional Integral. PI,PID and fuzzy based controller.