Intelligent SVC control for transient stability enhancement

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Abstract
An adaptive static VAR compensator (SVC) controller used to control the output of an SVC to damp power system oscillations is developed. The adaptive controller consists of an on-line identified plant model and a fuzzy logic controller. On-line model identification by recursive least-squares algorithm is used to obtain a dynamic equivalent model of the system model. A fuzzy logic controller is then adapted using the identified model. Effectiveness of the proposed technique is demonstrated by simulation studies on a single machine infinite bus system. Results obtained show improvement in the overall system damping characteristics using the proposed adaptive fuzzy logic SVC controller.

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