  In this paper we address the growing concerns of wind power integration from
the perspective of power system dynamics and stability. We propose a new
retrofit control technique where an additional controller is designed at the
doubly-fed induction generator site inside the wind power plant. This
controller cancels the adverse impacts of the power flow from the wind side to
the grid side on the dynamics of the overall power system. The main advantage
of this controller is that it can be implemented by feeding back only the wind
states and wind bus voltage without depending on any of the other synchronous
machines in the rest of the system. Through simulations of a 4-machine Kundur
power system model we show that the retrofit can efficiently enhance the
damping performance of the system variable despite very high values of wind
penetration.
