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Keywords:

  • doubly fed induction generation;
  • wind turbine;
  • rotor-side converter;
  • grid-side converter;
  • machine–network interface;
  • transient stability;
  • DFIG initialisation

Abstract

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 farms 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 © 2007 John Wiley & Sons, Ltd.