Improvement of the Stability of Power Systems Using Static Var Compensator by Fuzzy Control

Abstract

In this paper, a fuzzy controller for a static Var compensator (SVC) to enhance the damping of power systems is proposed. The proposed fuzzy controller can consider the stability of power systems because the control rules of the fuzzy controller are constructed to satisfy the stability of power systems based on sliding mode control. Therefore, the control efficiencies are improved sufficiently; besides, the fuzzy rules can be composed systematically. The proposed controller has the robustness in terms of parameter variations and non-linearity. The validity of proposed control method is examined by computer simulations modeled on a single-machine infinite bus system.