Enhancement of Power System Dynamics Using TCSC Based Hybride Series Capacitive Compensation

This paper demonstrate phase imbalanced series capacitive compensation to enhancing power system dynamics as it has the potential of damping power swing as well as subsynchronous resonance oscillations. In this paper, the effectiveness of a “hybrid” series capacitive compensation scheme in single line and double line to damping power system oscillations is computed. A hybrid concept is a series capacitive compensation scheme, in one case two phases are compensated by fixed series capacitor (Cs) and the third phase is compensated by a TCSC in series with a fixed capacitor (Cc) in singe line scheme. In second case one phase is compensated by fixed series capacitor (Cs) and the other phase are compensated by a TCSC in series with a fixed capacitor (Cc) in double line scheme The performance of the scheme in damping power system oscillations for various network conditions like fault and without fault are evaluated using the MATLAB simulation.