Applications of Controllable Series Capacitors for Damping of Power Swings*

* Presented at the 5th Symposium of Specialists in Electric and Expansion Planning (V SEPOPE), May 19-24, 1996, Brazil Abstract This paper examines the use of controllable series capacitors for damping of electromechanical oscillations. The fundamental input signal for damping of power swings is discussed based on the study of eigenvalues of a linearized power system. The impact of a CSC on damping of a power system is shown through an analytical approach. Use of appropriate locally measurable input signals are investigated for two power systems. The performance of CSC for damping of power swings is compared with that of a PSS. It is shown that a CSC can be a very effective device for damping of power swings using locally measurable input signals.