Effectiveness of TCSC controllers using remote input signals for transient stability enhancement

This paper presents a method to improve the dynamic performance of a power system with Thyristor-Controlled Series Capacitor (TCSC) using remote measurement input signals. The remote signals are selected based on their effectiveness for damping the first swing oscillation. Phasor Measurement Units (PMUs) are used to measure real-time remote signals and transfer those to the TCSC stability control loop. The locations, the designs and the co-ordination of the TCSCs for damping power system oscillations are determined. Transient stability studies are performed for the Vietnamese system. The dynamic simulations demonstrate the suitable locations and good designs of the TCSCs. The case studies show the improvement of the transient stability comparing control using remote control signals instead of local signals.