Abstract

AbstractIn this work, a fractional STATCOM-based controller action is proposed for small signal stability enhancement of a variable wind integrated power system. The controlled action is provided by a fractional lead-lag compensation based on STATCOM whose parameters are optimized using lightning search algorithm (LSA) in contrast with PSO and DE techniques. The system response and eigenvalues are analyzed prior to and post damping action of the power system with step and random wind penetrations and also varying turbine input power. Eigenvalue analysis of mechanical modes of system with different case studies has been analyzed. Also, time domain analysis has been performed for 200 s with random wind penetrations to prove the efficiency of proposed controller. It is observed that fractional control action based on STATCOM with parameters tuned by LSA can much enhance system oscillation damping subject to step and random mechanical and wind power variations.KeywordsSTATCOMWind sourceSmall signal stabilityLightning search algorithm

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