Damping of Sub-synchronous Resonance and Power Swing using TCSC and Series capacitor

Abstract

The proposed series capacitive compensation scheme is effective in damping power swing as well assub synchronous resonance oscillations. The combination of fixed series capacitor and TCSC is termed as a Hybridtechnique. In this paper, the effectiveness of a ?hybrid? series capacitive compensation scheme in damping power systemoscillations is evaluated. In this scheme, where two phases are compensated by fixed series capacitor (C) and the thirdphase is compensated by a TCSC in series with a fixed capacitor (Cc). The effectiveness of the scheme in damping powersystem oscillations for various network conditions, namely different system faults and tie-line power flows is evaluatedusing the EMTP-RV time simulation program.