Effects of the SVC and the STATCOM on Damping Power Systems Low Frequency Electromechanical Oscillations

This work investigates the effects of two FACTS (Flexible AC Transmission Systems) devices, the SVC (Static Var Compensator) and the STATCOM (Static Synchronous Compensator), in power systems small-signal angle stability. This investigation is carried out to a single generator connected to an infinite bus via a loss-less transmission line. The study is based in the investigation of the critical eigenvalues of the power system linearized model in the framework of the bifurcation theory. The presented simulation results allow a comparative analysis of the effects of these two controllers in damping power systems low frequency electromechanical oscillations.