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In this paper we address the growing concerns of wind power integration fromthe perspective of power system dynamics and stability. We propose a newretrofit control technique where an additional controller is designed at thedoubly-fed induction generator site inside the wind power plant. Thiscontroller cancels the adverse impacts of the power flow from the wind side tothe grid side on the dynamics of the overall power system. The main advantageof this controller is that it can be implemented by feeding back only the windstates and wind bus voltage without depending on any of the other synchronousmachines in the rest of the system. Through simulations of a 4-machine Kundurpower system model we show that the retrofit can efficiently enhance thedamping performance of the system variable despite very high values of windpenetration.

A Retrofitting-based Supplementary Controller Design for Enhancing Damping Performance of Wind Power Systems