Comparative study of the effects of SVC and TCSC on the small signal stability of a power system with renewables.

This study analyzed the effects of applications of flexible alternating current transmission system (FACTS) devices, such as a thyristor controlled series capacitor (TCSC) and static var compensator (SVC) to handle the oscillations due to wind penetration in an existing network, and to exploit the AC lines to their thermal limits. A small signal stability analysis of an interconnected power system with wind penetration in the presence of FACTS and a power system stabilizer (PSS) was studied under a diverse range of operating conditions. The coordinated tuning of SVC and PSS parameters as well as a TCSC in the presence of a wind energy conversion system was analyzed. The salp swarm algorithm, a recently developed meta-heuristic approach, was used for tuning TCSC, SVC, and PSS parameters. The supremacy of TCSC over SVC for improving system stability was demonstrated under a diverse range of operating conditions. [ABSTRACT FROM AUTHOR]