Power quality improvement using DSTATCOM

Abstract

This paper presents a combination of voltage source converter and capacitor banks which is called as Static Compensator (STATCOM), voltage source converter (VSC) based diversion connected Flexible AC Transmission System (FACTS) devices which improves the dynamic and static voltage control in transmission in addition with distribution system. It is a reactive power return device which can produce and absorb the reactive power. The power quality has ongoing to play an important role in electronic and electrical industries. A system concerning the power quality measurement are voltage flicker and harmonics. Normally DSTATCOM is connected in distribution system. In some application DSTATCOM is used instead of capacitor banks because it is having low power losses. The IGBT is used as a power switch which has low switching loss and the turn off is very simple. In this paper THD is evaluated, disturbances obtained in the voltage and current waveforms are reduced by means of DSTATCOM. The distribution system with DSTATCOM and the control scheme used for power quality enhancement is simulated and validated by means of MATLAB/SIMULINK.