Modelling and transient stability of large wind farms

Vladislav Akhmatov, Hans Knudsen, Arne Hejde Nielsen, Jørgen Kaas Pedersen, Niels Kjølstad Poulsen

Research output: Contribution to journalJournal articleResearchpeer-review


The paper is dealing-with modelling and short-term Voltage stability considerations of large wind farms. A physical model of a large offshore wind farm consisting of a large number of windmills is implemented in the dynamic simulation tool PSS/E. Each windmill in the wind farm is represented by a physical model of grid-connected windmills. The windmill generators ate conventional induction generators and the wind farm is ac-connected to the power system. Improvements-of short-term voltage stability in case of failure events in the external power system are treated with use of conventional generator technology. This subject is treated as a parameter study with respect to the windmill electrical and mechanical parameters and with use of control strategies within the conventional generator technology. Stability improvements on the wind farm side of the connection point lead to significant reduction of dynamic reactive compensation demands. In case of blade angle control applied at failure events, dynamic reactive compensation is not necessary for maintaining the voltage stability.
Original languageEnglish
JournalInternational Journal of Electrical Power & Energy Systems
Issue number2
Pages (from-to)123-144
Publication statusPublished - 2003


  • Electricity producing wind-turbines
  • Wind farms
  • Modelling
  • Dynamic simulation tools
  • Transient stability

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