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Mitigation of Subsynchronous Resonance in Power System through STATCOM and Auxiliary Controller
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In FACTS devices, auxiliary signals are widely used to enhance damping and mitigate Subsynchronous Resonance in Power System. Subsynchronous Resonance occurs due to series capacitor in Power System. In this paper a novel auxiliary controller of STATCOM is designed with auxiliary signal ωg i.e. accelerating frequency of generator rotor mode. Auxiliary controller is superimposed on conventional PI controller. The study system is IEEE First Benchmark Model. Alone PI is not able to damp all the modes of First Benchmark Model.
Keywords
STATCOM, Auxiliary signals, Accelerating frequency, PI controller, IEEE First Benchmark Model.
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