2015 13th International Conference on Frontiers of Information Technology (FIT) (2015)
Dec. 14, 2015 to Dec. 16, 2015
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/FIT.2015.43
This research work proposes the supplementary control design for multiple High Voltage DC (HVDC) links to damp out post-contingency oscillations and enhance the stability of large interconnected AC/DC power system. The proposed MIMO supplementary control scheme uses nonlinear feedback linearization control with real-time optimized NeuroFuzzy identification of the power system dynamics and online self-tuning of controller parameters. An appropriate control signal is generated that modulates the real power flow through HVDC link and improves the damping of low frequency electro-mechanical oscillations during perturbed operating conditions. The performance of the proposed control is validated through comparison against the conventional PID control under a variety of contingency conditions of multi-machine test power system. The results demonstrate a significant improvement in both transient and steady-state stability of the power system.
Power system stability, HVDC transmission, MIMO, Damping, Control systems, Inverters, Adaptive systems
Saghir Ahmad, Laiq Khan, "Adaptive Feedback Linearization Control for Power Oscillations Damping in AC/DC Power System", 2015 13th International Conference on Frontiers of Information Technology (FIT), vol. 00, no. , pp. 199-204, 2015, doi:10.1109/FIT.2015.43