Improvement of Transient Stability and Damping Power by Means of IPFC and STATCOM - A Comparative Study

An assessment study of two different FACTS-based controllers for damping power system oscillation is presented in this paper. This application examines the influence of Interline Power Flow Controller (IPFC) and static synchronous compensator (STATCOM) on the synchronizing power and damping power of a single-machine system. The main function of IPFC is to compensate for the voltage drop across the impedance transmission line while the STATCOM provides voltage support at the point of connection at the transmission line. The proposed technique of evaluating system damping is then tested on a single-machine system with and without classical regulation. The results obtained in both the systems are then systematically described.