Abstract

A Static Compensator (STATCOM) is a flexible ac transmission system (FACTS) controller, which can either absorb or deliver reactive power to a power system. Distribution STATic COMpensator (D- STATCOM) is proposed for compensation of reactive power and unbalance caused by various loads in distribution system. Distribution static compensator is based on the VSC principle. A D-STATCOM injects a current into the system to correct the voltage sag, swell and power factor. Distribution Static Synchronous Compensator (D-STATCOM) is an effective measure to maintain voltage stability and improve power quality of distribution grid. This paper deals with the modeling and control scheme of D-STATCOM. A stability analysis of D-STATCOM is obtained by bode plot approach. The theoretical analysis and design are verified by the results.

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