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PSCAD Simulation Model of D-Statcom for Voltage Sag Improvement

This paper deals with the modeling and simulation of Distribution Static Compensator (D-STATCOM) for voltage sag mitigation. The D-STATCOM simulation model consists of 12-pulse inverter, which is connected in shunt with the system. A generalized sinusoidal pulse width modulation (SPWM) technique was developed in the proposed controller for fast control action of the D-STATCOM. Simulations of the D-STATCOM were carried out by using Power System Computer Aided Design (PSCAD) software. Simulation results prove that the D-STATCOM is capable of mitigating voltage sag as well as improving power quality of a distribution system.