Application Lyapunov Theory to Determine Control Strategy of Static Var Compensator for Damping Power System Oscillation

摘要

Problem statement: The disturbance in power system is unavoidable situation. It causes in power system oscillation. Approach: This study applied the Static Var Compensator (SVC) to damp power system oscillation. The stability criterion of the Lyapunov is applied to derive the control strategy of SVC. The simulation results are tested on a Single Machine Infinite bus. The proposed method is equipped in sample system with disturbance. The generator rotor angle curve of the system without and with a SVC is plotted and compared for various cases. Results: It was found that the system without a SVC has high variation whereas that of the system with a SVC has much smaller variation. Conclusion: From the simulation results, the SVC can damp power system oscillaton. 【keyworks】 Power system;power system oscillation;Flexible AC Transmission Systems (FACTS);static var compensator;thyristor controlled phase shifter transformer;thyristor controller series capacitor;static synchronous compensator;static synchronous series compensator;unified power flow controller;inter-line power flow controller;control strategy