An Aggregated Model of a Large Wind Farm with Variable-Speed Wind Turbines Equipped with Doubly-Fed Induction Generators

One of the main concerns of grid-integration of large wind farms with variable-speed wind turbines equipped with doubly-fed induction generators controlled by back-to-back converters is a possible risk of mutual interaction between the control systems of the converters. This topic is discussed and illustrated by simulations on a large wind farm model consisting of eighty wind turbines, when subjected to a short-circuit fault. At no mutual interaction, the wind turbines show coherent response at the grid fault. In such a case, large wind farms can be represented by one-machine equivalent, e.g. one wind turbine model with re-scaled power capacity. This simplification can be applied for voltage stability investigations carried out on detailed models of large power systems.

[1]  M. B. Brennen,et al.  Vector analysis and control of advanced static VAr compensators , 1991 .

[2]  Vladislav Akhmatov.  Variable-Speed Wind Turbines with Doubly-Fed Induction Generators Part IV: Uninterrupted Operation Features at Grid Faults with Converter Control Coordination , 2003 .

[3]  Vladislav Akhmatov.  Variable-Speed Wind Turbines with Doubly-Fed Induction Generators Part III: Model with the Back-to-back Converters , 2003 .

[4]  Niels Kjølstad Poulsen,et al.  Modelling and transient stability of large wind farms , 2003 .

[5]  Janaka Ekanayake,et al.  Dynamic modeling of doubly fed induction generator wind turbines , 2003 .

[6]  T. Ackermann,et al.  World-wide offshore wind potential and European projects , 2001, 2001 Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.01CH37262).

[7]  J.G. Slootweg,et al.  Modeling of large wind farms in power system simulations , 2002, IEEE Power Engineering Society Summer Meeting,.

[8]  Niels Kjølstad Poulsen,et al.  Short-term Stability of Large-Scale Wind Farms , 2001 .

[9]  M. Yamamoto,et al.  Active and reactive power control of doubly-fed wound rotor induction generator , 1990, 21st Annual IEEE Conference on Power Electronics Specialists.

[10]  J.C. Clare,et al.  Vector controlled induction machines for stand-alone wind energy applications , 2000, Conference Record of the 2000 IEEE Industry Applications Conference. Thirty-Fifth IAS Annual Meeting and World Conference on Industrial Applications of Electrical Energy (Cat. No.00CH37129).

[11]  Hans Knudsen,et al.  An aggregate model of a grid-connected, large-scale, offshore wind farm for power stability investigations—importance of windmill mechanical system , 2002 .

[12]  Tore M. Undeland,et al.  DOUBLY FED INDUCTION GENERATOR IN A WIND TURBINE , 2002 .