IMPROVEMENT OF POWER QUALITY USING FUZZY BASED UNIFIED POWER FLOW CONTROLLER

Abstract

The Electricity is contemplated as the back bone for the industrial revolution and in order to conclave the meeting of both industrial and household needs electricity needs to be at a larger transmission. For this paving of the electricity and also regulating the issues which are cascading on the power system something Flexible need to be adapted. Flexible Alternating Current Transmission Systems (FACTS) has been a promising aspect in terms of the power system performance analysis. In this paper a comprehensive analysis on the Unified Power Flow Controller (UPFC) which being one of the FACTS device is presented. Accordingly the UPFC for different cases is perceived using a Proportional Integral (PI) controller and a Fuzzy logic controller (FLC). The Fuzzy logic controller is introduced, developed by the MAMDANI method replacing PI controller on a transmission line under different power system operating conditions. MATLAB/SIMULINK was used in order to delineate the controller network. It was observed that the UPFC with the Fuzzy logic based control technique in lines of alleviating the power quality issues an superior performance than that of UPFC with the PI controller. It could be concluded that the Fuzzy logic controller (FLC) for mitigating the issues of power quality. Keywords— Flexible Alternating current transmission systems (FACTS), Unified Power Flow Controller (UPFC), Proportional integral, fuzzy logic, MATLAB/SIMULINK, Power system, Power Quality.