Available transfer capability enhancement with FACTS using Cat Swarm Optimization

• We focus on the impact of FACTS devices to maximize available transfer capability.
• Enhancement of ATC is more with TCSC when compared to SVC.
• Implementation of the proposed Cat Swarm Optimization gives good result.
• Installing SVC will improve voltage profile as well as resulting ATC enhancement.
• TCSC can improve ATC in both thermal dominant case and voltage dominant case.

Determination and enhancement of Available Transfer Capability (ATC) are important issues in deregulated operation of power systems. This paper investigates the use of FACTS devices, such as SVC and TCSC, to maximize power transfer transactions during normal and contingency situations. ATC is computed using Continuation Power Flow (CPF) method considering both the thermal limits and voltage profile. Cat Swarm Optimization (CSO) is used as an optimization tool to determine the location and controlling parameters of SVC and TCSC. The suggested methodology is tested on IEEE 14-bus system and also on IEEE 24-bus reliability test system for normal and different contingency cases.