IMPROVEMENT OF POWER QUALITY IN DISTRIBUTION SYTEM BY USING FACTS WITH SMES

Abstract

The main aim of project is to improve the power quality in distribution system by using facts device with SMES unit. In existing system SMES unit is proposed to improve the dynamic performance of a wind energy conversion system equipped with DFIG during voltage sag and voltage swell events. The converter and the chopper of the SMES unit are controlled using a hysteresis current controller and a fuzzy logic controller, respectively. In proposed system a 12-pulse based Static Synchronous Series Compensator (SSSC) with and without Superconducting Magnetic Energy Storage (SMES) for enhancing the voltage stability. The Control scheme for the chopper circuit of SMES coil is designed. A three area system is taken as test system and the operation of SSSC with and without SMES is analysed for various transient disturbances in MATLAB / SIMULINK environment.