Transient stability model and preventive control based on phase shifting transformer in power system

Control schemes are needed in electric power networks to avoid unwanted outages and blackouts, otherwise non-stationary disturbance may pose stability issues in dynamic process. For improving system transient stability and avoiding voltage collapse, this paper presents a dynamic control scheme for power system by employing phase shifting transformer(PST). In particular, the control scheme is based on trajectory sensitivity analysis for realizing preventive control. The simulation results have verified the validation of the proposed method.