中国电力 ›› 2018, Vol. 51 ›› Issue (12): 72-79.DOI: 10.11930/j.issn.1004-9649.201803018

• 电网 • 上一篇    下一篇

复合接地消弧方式接地故障分析及保护对策

余斌1, 尹项根2, 朱维钧1, 吴小忠3, 宁春海4, 李辉1, 龚汉阳1, 徐浩1, 刘海峰1   

  1. 1. 国网湖南省电力有限公司电力科学研究院, 湖南 长沙 410007;
    2. 电力安全与高效湖北省重点实验室(华中科技大学), 湖北 武汉 430074;
    3. 国网湖南省电力有限公司, 湖南 长沙 410000;
    4. 国网湖南省电力有限公司邵阳供电分公司, 湖南 邵阳 422000
  • 收稿日期:2018-03-06 修回日期:2018-07-29 出版日期:2018-12-05 发布日期:2018-12-13
  • 作者简介:余斌(1992-),男,助理工程师,从事电力系统继电保护、电力系统通信及配电网检测技术研究,E-mail:bindongsanchi@163.com;尹项根(1954-),男,教授,博士生导师,从事电力系统继电保护及自动化研究
  • 基金资助:
    国家重点研发计划项目(2016YFB0900600);国网湖南省电力有限公司科技项目(5216A0160009)。

Grounding Fault Analysis and Protection Scheme Study for Composite Grounding Arc-suppression Mode

YU Bin1, YIN Xianggen2, ZHU Weijun1, WU Xiaozhong3, NING Chunhai4, LI Hui1, GONG Hanyang1, XU Hao1, LIU Haifeng1   

  1. 1. State Grid Hunan Electric Power Company Limited Research Institute, Changsha 410007, China;
    2. Electric Power Security and High Efficiency Key Lab (Huazhong University of Science & Technology), Wuhan 430074, China;
    3. Construction Department of Hunan Electric Power Company, Changcha 410000, China;
    4. Construction Department of Hunan Electric Power Company Limited Shaoyang Power Supply Company, Shaoyang 422000, China
  • Received:2018-03-06 Revised:2018-07-29 Online:2018-12-05 Published:2018-12-13
  • Supported by:
    This work is supported by National Key Research and Development Program of China(No.2016YFB0900600),Science and Technology Project of State Grid Hunan Power Co., Ltd. (No.5216A0160009).

摘要: 论述了配电网中性点典型接地方式和复合接地消弧方式的接线形式。围绕单相接地故障分析,在广泛调研和梳理10 kV配电网典型网络结构及接入设备基础上,遵循现有电力设计标准规范,建立了反映配电网工程实际的精准仿真模型。分别阐述了转移接地方式和智能接地方式的工作原理,仿真分析了其故障处理过程,并提出一种利用本线路故障接地和操作接地的暂态信号首半波接地故障进行选线的方法,同时分析了过渡电阻对智能多模接地方式下零序电流保护的影响,为复合接地消弧方式的工程应用奠定了坚实的理论基础。

关键词: 配电网, 中性点接地方式, 接地故障分析, 转移接地, 智能多模接地

Abstract: The wiring form of typical grounding mode and composite grounding arc-suppression mode of distribution network neutral point are discussed. Centering on analysis of single-phase ground fault, and based on a wide-range survey of typical structure and accessing equipment of 10 kV distribution network, accurate simulation model reflecting engineering practice is established according to the existing power design standards. This paper not only describes the principle of grounding fault transfer mode and intelligent multimode grounding mode respectively, but also analyzes their fault treatment process by simulation. In addition, a line selection method based on the first transient half wave of fault grounding and operation grounding of the own line is put forward for grounding fault transfer mode, and the effect of transition resistance on zero-sequence current protection for intelligent multimode grounding mode is analyzed. This research lays a solid theoretical foundation for the engineering application of composite grounding arc-suppression mode.

Key words: distribution network, neutral grounding mode, grounding fault analysis, grounding fault transfer mode, intelligent multimode grounding mode

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