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ZJUS-A
Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering)  2008, Vol. 9 Issue (4): 558-563    DOI: 10.1631/jzus.A071564
Electrical & Electronic Engineering     
A novel dynamic equivalence method for grid-connected wind farm
Jia-geng QIAO, Zong-xiang LU, Yong MIN
State Key Laboratory of Power Systems, Department of Electrical Engineering, Tsinghua University, Beijing 100084, China
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Abstract  Dynamic equivalence of the wind farm is a fundamental problem in the simulation of a power system connected with wind farms because it is unpractical to model every generator in a wind farm in detail. In this paper, an Equivalence Method based on the Output Characteristics (EMOC) is proposed, with which the wind farm composed of Squirrel-Cage Induction Generators (SCIGs) can be equivalent to one generator. By considering the diversity of wind generators and special operating characteristics of a wind farm, the equivalent generator based on EMOC responds accurately in various faults. No matter whether the wind farm is integrated in grid or just programmed, EMOC can be used to acquire an accurate equivalent generator. Simulation of the dynamic equivalence of an SCIG wind farm validated the method.

Key words： Grid-connected wind farm      Dynamic equivalence      Squirrel-Cage Induction Generator (SCIG)      Genetic algorithm     
Received: 25 October 2007      Published: 04 March 2008
CLC:  TM7  
  TK8  
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Jia-geng QIAO
Zong-xiang LU
Yong MIN
Cite this article:

Jia-geng QIAO, Zong-xiang LU, Yong MIN. A novel dynamic equivalence method for grid-connected wind farm. Journal of Zhejiang University-SCIENCE A (Applied Physics & Engineering), 2008, 9(4): 558-563.

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http://www.zjujournals.com/xueshu/zjus-a/10.1631/jzus.A071564     OR     http://www.zjujournals.com/xueshu/zjus-a/Y2008/V9/I4/558

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