Mitigation of Voltage Sag by Using Distribution Static Compensator (D-STATCOM)

This paper presents a study on the modeling of a D-STATCOM (Distribution Static Compensator) used for mitigating voltage sag on a distribution network. The power circuits of the D-STATCOM and the distribution network are modeled by specific blocks from the Power System Block set while the control system is modeled by Simulink blocks. A main feeder feeding a 10 MW load is abruptly disturbed by the inclusion of a sudden load of 10 MW thereby creating voltage sag. This voltage sag is corrected by the static compensator.