Adaptive Sub-synchronous Resonance Damping Controller for AC/DC Hybrid Power System with High Penetration Wind Power

An adaptive sub-synchronous resonance (SSR) damping controller using Kalman filters are proposed for AC/DC hybrid system with high penetration wind in this paper. First, the supplementary damping coordinated controller of DFIG and HVDC are designed using multiple input multiple output LMIs. Then the adaptive method using Kalman online estimations for tracking the operating points caused by the variable wind power output. The AC/DC hybrid system integration with wind power generation is used as test system. The characteristic of variable SSR modes with wind power outputs is investigated, and the simulation results demonstrated that the adaptive SSR damping control method could not only track the operating condition, but also could give robust and effective control in the case of large fluctuation of wind power output.