Fault-Current Study of the Wind-Turbine-Driven Doubly-Fed Induction Generator with the Crowbar Protection

被引：0
|
作者：
Kong, Xiangping [1 ]
Zhang, Zhe [1 ]
机构：
[1] Huazhong Univ Sci & Technol, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Hubei, Peoples R China
来源：
ELEKTROTEHNISKI VESTNIK-ELECTROCHEMICAL REVIEW | 2014年 / 81卷 / 1-2期
基金：
中国国家自然科学基金;
关键词：
doubly-fed induction generator (DFIG); crowbar protection; stator flux linkage; fault-current characteristics;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The crowbar protection is commonly used for wind turbines with a doubly-fed induction generator (DFIG) to enhance the low-voltage ride-through capability of the wind turbines. Thus, the fault-current characteristics of DFIG with the crowbar protection under symmetric- and asymmetric-fault states are studied in this paper. Firstly, a DFIG dynamic model in the stator stationary reference frame is developed and the dynamic characteristics of DFIG stator flux linkage are studied when the crowbar protection is activated. Based on it, the DFIG fault-current characteristics under symmetric- and asymmetric-fault states are analyzed and analytical expressions are obtained. Finally, the simulation results show that the accuracy of the theoretical analysis results is satisfactory to meet the requirements of the study of the relay-protection principle and calculation.
引用
收藏
页码：57 / 63
页数：7
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