Modelling analysis of transient stability simulation with high penetration of grid-connected wind farms of DFIG type

This paper shows a model of a doubly fed induction generator (DFIG) including a simplified model of a wind turbine for the purpose of transient stability analysis of large-scale power systems with great wind forms penetration. The wind turbine model and the DFIG model are systematically deducted in this paper. Specially, the improved model of rotor-side converter and the simplified grid-side converter model are considered in our work. The corresponding machine-network interface solution based on the synchronously rotating common x-y reference frame is elaborately issued in this paper. Furthermore, a method is proposed to calculate the DFIG initial conditions as well. A simplified model of the turbine is used excluding among other components the pitch control. Copyright (C) 2007 John Wiley & Sons, Ltd.