The Effect of Thyristor Controlled Series Compensator on Power System Oscillation Damping Control

摘要

The variable series compensation is highly effective in both controlling power flow in the line and in improving stability. Thyristor controlled series compensator (TCSC) is one of the most important and known series flexible ac transmission system (FACTS) controllers. This paper investigates the effects of the TCSC on small-signal power system stability. The power sensitivity model is used to the representation of the electric power system. Both IEEE type-STl and IEEE type-ST3 excitation system model are used. The proposed controller and technique are employed single-machine infinite-bus (SMIB) system under different cases. To validate the effectiveness of the TCSC on enhancing system stability, eigenvalues analysis and a time-domain simulation implemented on SMIB equipped with TCSC. Finally, the simulation results verify the validity of the proposed approach.