Voltage flicker mitigation using PWM-based distribution STATCOM

Voltage flicker, a phenomenon of annoying fight intensity fluctuation, caused by large rapid industrial load changes, has been a major concern for both power companies and customers in the area of power quality. The fast response of the distribution static compensator (DSTATCOM) makes it the efficient solution for improving power quality in distribution systems. In this paper, a voltage flicker phenomena in a 69/13.8 kV distribution system Is modeled and simulated using MATLAB/Simulink Power System Blockset (PSB). Voltage flicker mitigation studies with a current controlled PWM-based DSTATCOM are also performed and discussed.