Current Attenuation Factor Based Line Protection Scheme for Distribution Network of DFIG Wind Power Integration System

被引：0
|
作者：
Duan J. [1 ]
Chen T. [1 ]
Shang D. [1 ]
Cui S. [2 ]
He Y. [3 ]
机构：
[1] School of Automation and Information Engineering, Xi'an University of Technology, Xi'an, 710048, Shaanxi Province
[2] Xi'an Communication Gas Corporation Ltd., Xi'an, 710075, Shaanxi Province
[3] State Grid Shaanxi Maintenance Company, Xi'an, 710065, Shaanxi Province
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2020年 / 40卷 / 06期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Current attenuation factor; Distribution line protection; Doubly-fed induction generator (DFIG); Prony algorithm;
D O I：
10.13334/j.0258-8013.pcsee.X190386
中图分类号：
学科分类号：
摘要：
Because of the high permeability of the distributed doubly-fed induction generator (DFIG) in the distribution network and its different electromagnetic transient characteristics from the conventional power supply, the existing protection is difficult to adapt to the distribution lines of DFIG wind power integration system. Through the analysis of the general expression of the fault current by DFIG, the difference in characteristics of the transient current between the two ends of the protected line is found. Based on this, a new protection principle of distribution line of DFIG wind power integration system was proposed, and protection scheme based on current attenuation factor was constructed by Prony algorithm. At last, based on a 10kV local grid of DFIG wind power integration system as prototype, a PSCAD simulation model was build. A large number of tests show that the proposed line protection can identify the faults reliably and sensitively with different fault type, fault position, DFIG capacity and other conditions. © 2020 Chin. Soc. for Elec. Eng.
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页码：1915 / 1923
页数：8
相关论文
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