Quantitative Evaluation on Generator Power Control Effect of FACTS Controllers for Power System Stabilization

Abstract

The advancement of power electronics technologies has significantly developed the power system stabilizing controllers. Quantitative as well as qualitative evaluation on their effectiveness in power systems is a matter of great importance for the feasibility investigation of these apparatus. In this paper, the possible control region of FACTS controllers with series and/or shunt configuration in a single machine to infinite bus system is formulated in the power-angle curve with a set of algebraic equations. The effectiveness of TCPST (Thyristor-Controlled Phase Shifting Transformer), SSSC (Static Synchronous Series Compensator) and TCSC (Thyristor-Controlled Series Compensator) for the improvement of the transient stability is evaluated quantitatively as a numerical example. The correctness of the proposed method has been confirmed by the analysis based on the EMTP simulation with a detailed system model.