Nuernapha Vititanont and Komsan Hongesombut
Phase-plane fuzzy logic control, Thyristor Controlled Series Capacitor, Robust control, Wide area control
This paper presents a robust control of Thyristor Controlled Series Capacitor (TCSC) using the phase-plane fuzzy logic to improve the power oscillation damping of a wide-area power system. First, the TCSC is installed in series with transmission lines of two-area four-machine interconnected power system. Then, the phase-plane fuzzy logic control is adopted so as to control the power oscillations robustly and to improve the power system stability due to uncertainty from the delay time of a wide area control. The performance of the proposed phase-plane fuzzy logic controller is compared with the lead-lag compensator optimally tuned by GA. The simulation results reveal that the proposed phase plane fuzzy logic control can achieve higher performance and more robustness under the large communication delay.
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