A self-tuning NeuroFuzzy feedback linearization-based damping control strategy for multiple HVDC links

Authors : SAGHIR AHMAD, LAIQ KHAN

Pages : 913-938

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Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :This research work proposes a multi-input multi-output insert ignore into journalissuearticles values(MIMO); online adaptive feedback linearization NeuroFuzzy control insert ignore into journalissuearticles values(AFLNFC); scheme to improve the damping of low frequency oscillations insert ignore into journalissuearticles values(LFOs); in an AC/DC power system. Optimized NeuroFuzzy identification architecture online captures the oscillatory dynamics of the power system through wide area measurement system insert ignore into journalissuearticles values(WAMS);-based measured speed signals of machines. Based on the identified power system model, the appropriate control law is derived through feedback linearization control with a self-tuned coefficient vector. The generated control signal modulates the real power flow through a high voltage direct current insert ignore into journalissuearticles values(HVDC); link during perturbed operating conditions and enhances system stability. The effectiveness of the proposed control strategy is demonstrated through different contingency conditions of a multi-machine test power system with multiple HVDC links. The results validate the significance of the proposed control strategy to improve the capability of HVDC links to damp inter-area modes of LFOs. The proposed MIMO AFLNFC performance is bench-marked against conventional PID based supplementary control.
Keywords : Inter area oscillation, high voltage direct transmission, adaptive NeuroFuzzy system, feedback linearization, nonlinear control