Intelligent SVC control for transient stability enhancement

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.