A Voltage Compensation in Low Voltage Distribution Grid using Minimum Power Point Tracking in STATCOM

Abstract

This paper presents the design of a distribution static compensator (D-STATCOM) for voltage sag mitigation in an
240V Low Voltage Distribution system in different loading conditions. The model is based on the voltage source
converter (VSC) principle. A new PWM based control scheme has been implemented to control the electronic valves in
VSC. The D-STATCOM injects current into the system using minimum power point technique to mitigate the voltage
sags. In the present work the 6pulse D-STATCOM configuration with IGBT has been designed using Matlab/Simulink.
Accordingly, simulations are carried out to illustrate the use of D-STATCOM in mitigating voltage sag in the low
voltage distribution system. Simulation results prove that the D-STATCOM is capable of mitigating voltage sag as well
as reducing the power loss in the distribution system. Cost calculation has been made before and after installation of
D-STATCOM.