- Turkish Journal of Electrical Engineering and Computer Science
- Vol: 25 Issue: 2
- A self-tuning NeuroFuzzy feedback linearization-based damping control strategy for multiple HVDC lin...
A self-tuning NeuroFuzzy feedback linearization-based damping control strategy for multiple HVDC links
Authors : Saghir Ahmad, Laiq Khan
Pages : 913-938
View : 7 | Download : 3
Publication Date : 9999-12-31
Article Type : Makaleler
Abstract :This research work proposes a multi-input multi-output (MIMO) online adaptive feedback linearization NeuroFuzzy control (AFLNFC) scheme to improve the damping of low frequency oscillations (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 (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 (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