Mitigation of sub synchronous resonance oscillations using static var compensator

Abstract

Subsynchronous Resonance (SSR) is a serious problem in power system networks which causes uncontrolled oscillations in the mechanical system of a multi mass model [1]. Many models have been developed to mitigate these oscillations which generally occur during a symmetrical closed circuit fault on the power system. In this paper the developed model has been tested using IEEE second benchmark system [2] in MATLAB Simulink. Here, this model is simulated without FACTS controllers and then the Static VAr Compensator (SVC) is included in the model and the results are compared for their effectiveness in damping the SSR oscillations.