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Damping of Subsynchronous Resonance in an Series Compensated System using PSCAD

Abstract

Abstract-Series capacitor compensation in AC transmission systems may cause sub synchronous resonance that can lend to turbine generator shaft failure. Series capacities also have a tendency to amplify the shaft stress during major network transient events. When the level of series compensation is increased subsynchronous Resonance will be more. The mode of oscillation between the electrical and mechanical system will be high. The major concern of sub synchronous resonance is self excitation and Transient Toque Amplification. This paper is based on IEEE first Bench mark model and provides an overview of sub synchronous resonance for the various level of series compensation. The paper also provides method for mitigating sub synchronous Resonance problems. Simulation is carried out in PSCAD Software

Naresh Babu.G, Sudhagar.V

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