Calculation of short-circuit current of DFIG with the considering of crowbar resistance

被引：0
|
作者：
Pan W. [1 ]
Yang G. [1 ]
Liu M. [1 ]
Pan X. [1 ]
Yang J. [2 ]
Sun K. [2 ]
Yang C. [3 ]
机构：
[1] College of Energy and Electrical Engineering, Hohai University, Nanjing, 210098, Jiangsu Province
[2] Power China Huadong Engineering Corporation Limited, Hangzhou, 311122, Zhejiang Province
[3] State Grid Yangzhou Power Supply Company, Yangzhou, 225000, Jiangsu Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2016年 / 36卷 / 13期
基金：
中国国家自然科学基金;
关键词：
Crowbar resistance; Doubly fed induction generator; PSCAD/EMTDC; Three-phase short-circuit current; Voltage dip;
D O I：
10.13334/j.0258-8013.pcsee.152124
中图分类号：
学科分类号：
摘要：
Crowbar protection is the main protection device of most double fed induction generator(DFIG) at present. The existence of Crowbar resistance has an important influence on the transient process of doubly fed induction generator. So the Crowbar resistance element should be considered in the calculation of three-phase short-circuit current of doubly fed induction generator. The transient equivalent circuit of doubly fed induction generation system with Crowbar resistance was built, the influence of stator side equivalent impedance on the transient process was analyzed, The expression of stator side transient equivalent impedance was derived, and on the basis of this, the expression of the maximum value and the effective value of the periodic component of the three-phase short-circuit current of the doubly fed wind generator was derived. The effects of different Crowbar resistance values on the calculation of three-phase short circuit current were also given. At last, the maximum of three phase short circuit current and the effective value of the periodic component were verified by PSCAD/EMTDC simulation. The effective value and the maximum value of three-phase short current of doubly fed induction generator are accurate and convenient, which is of great significance to the electrical safety design of the wind farm. © 2016 Chin. Soc. for Elec. Eng.
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页码：3629 / 3634
页数：5
相关论文
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