Single-phase ground fault line selection method of small current grounding system of multiple zero-sequence current transformer based on compensation parameters

被引：0
|
作者：
Zhang G. [1 ]
Zhang W. [1 ]
Ge Q. [1 ]
Xu L. [2 ]
机构：
[1] Faculty of Electrical and Control Engineering, Liaoning Technical University, Huludao
[2] State Grid Qinhuangdao Power Supply Company, Qinhuangdao
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2021年 / 49卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Adaptability; Compensation parameters; Multiple zero-sequence current transformers; Reliability; Sensitivity;
D O I：
10.19783/j.cnki.pspc.200308
中图分类号：
学科分类号：
摘要：
The method of multi-zero sequence current transformer structure and compensation parameters is used to study the single-phase ground fault line selection of a small current grounding system. This paper designs the topology of the system, and analyzes the influence rule of the different sequence of compensation parameters on current amplitude and phase of each zero sequence current transformer and the problem of the sensitivity of fault line selection. The variation rule of the zero-sequence current flowing through the fault point and the safety problem of the fault current under different compensation parameters are analyzed. The line selection criterion of the line selection method has high reliability and adaptability, can accurately identify the faulty line, and can effectively solve the current poor reliability and low adaptability technologies in the field of single-phase grounding fault line selection in the current small-current grounding systems problem. © 2021 Power System Protection and Control Press.
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页码：1 / 9
页数：8
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