Controller design for DFIG-based wind power generation to damp interarea oscillation

This paper proposes a new control design scheme for doubly fed induction generator (DFIG) based wind generation systems to damp interarea oscillations of power systems. The control system of DFIG consists of two parts. The first part is the primary power and voltage (PV) control. The second part is a supplementary damping controller (SDC) based on PV control, designed to enhance damping of interarea oscillations. To achieve the best performance, parameters of these two controllers are simultaneously tuned by using a differential evolution (DE) algorithm. Results of simulation on a two-area system incorporating a wind turbine generator demonstrate that the proposed control scheme can effectively suppress the interarea oscillation of the system.