Performance Analysis of SVC for Damping Oscillations in Two Area System

Development of electric power transmission facilities is constrained despite the fact that bulk power transfers and use of transmission systems by consumers are increasing rapidly. Due to this fact power system stability is becoming the major issue these days. Due to vast and complex power system variation in the load occurs with respect to time which results in rotor angle instability which causes the oscillations in the power system Power system oscillation is one of the major problems in power system operation. If not damped, these oscillations can grow and decrease transmission capacity of the lines which may cause interruption in energy supply. Traditionally, these oscillations have been damped by power system stabilizers (PSS). Recently, FACTS devices such as static synchronous compensator (SVC) equipped with a power oscillation damper (POD) have been also efficiently used for damping oscillation. The function of SVC is to regulate voltage at its terminal by changing the amount of reactive power exchanges with the power system and power oscillation damping is also provided by this device.