Using of TCSC and SSSC to Control the Power Flow and Oscillation Damping

The development of the modern power system has led to an increasing complexity in the study of power systems, and also presents new challenges to power system stability, this study investigates the improvement of power flow control and oscillation damping, by using TCSC and SSSC which is an effective FACTS device. Power system oscillation has been recognized as one of the major concerns in power system operation. Simulations are carried out in Matlab/Simulink environment to evaluate the effectiveness of Fixed Capacitor (FC), Thyristor Controlled Series Capacitor (TCSC), and Static Synchronous Series Compensator (SSSC) on three- machine power systems. The performance of TCSC is compared with FC and other FACTS devices such as Static Synchronous Series Compensator (SSSC).The simulation results show that in damping power system oscillations, the SSSC is more effective than TCSC and FC. In addition, the implementation of TCSC and SSSC to control the flow of power in apart of Libyan 220Kv ring around Tripoli center and specifically to reduce the loading of highly loaded transmission line in this network is presented.