Dynamic Simulation of Stability Enhancement Tools and Comparison of Control Strategies

The paper presents a study of different stability enhancement techniques with emphasis on the damping effectiveness of proposed static phase shifters. A linearized state-space model is derived to simulate the phase shifting action in AC system dynamics. The paper also presents a robust controller design procedure that transforms static phase shifters into a powerful stability enhancement tool similar in action to switched load, series compensation, and HVDC transmission damping capabilities.