An Economical Three-phase Fault Current Limiter

被引：0
|
作者：
Gan P. [1 ]
Yuan J. [1 ,2 ]
Zhang Z. [1 ]
Zhou H. [1 ]
Chen F. [1 ]
机构：
[1] School of Electrical Engineering and Automation, Wuhan University, Wuhan
[2] Shenzhen Institute, Wuhan University, Shenzhen
来源：
Dianwang Jishu/Power System Technology | 2021年 / 45卷 / 01期
基金：
国家重点研发计划;
关键词：
Finite element analysis; Permanent magnet; Saturated core fault current limiter; Three-phase fault;
D O I：
10.13335/j.1000-3673.pst.2019.1017
中图分类号：
学科分类号：
摘要：
Fault current limiter is an effective measure to limit short-circuit fault current of HV power grid. Considering the problems existing in HV fault current limiter, such as single-phase structure, large excitation capacity, high power loss, large volume and high cost, an economical three-phase saturated core fault current limiter is proposed in this paper. The structure adopts common iron yoke, which can effectively limit all kinds of fault currents. It has obvious advantages, such as low eddy current loss and high reliability of permanent magnet, low consumption of core magnetic material and permanent magnet. Firstly, the working principle of the new structure is presented, and its equivalent circuit and magnetic circuit model are established. Secondly, the impedance characteristics and flux distribution characteristics in various states are analyzed with finite element method. Finally, a small capacity test model is designed and developed, and experimental research is carried out. Feasibility and validity of the proposed method and structure are verified with simulation and tests. © 2021, Power System Technology Press. All right reserved.
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页码：399 / 408
页数：9
相关论文
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