Section Location Method for High Impedance Grounding Fault Based on Declining Periodic Component of Zero Sequence Current

Zhiwen LIU; Xuzhu DONG; Lin ZOU; Zhengrong WU; Jie LI; Dehui ZENG

doi:10.7500/AEPS20190320013

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Section Location Method for High Impedance Grounding Fault Based on Declining Periodic Component of Zero Sequence Current

Application Research | 更新时间：2025-06-16

- Section Location Method for High Impedance Grounding Fault Based on Declining Periodic Component of Zero Sequence Current
- Automation of Electric Power Systems Vol. 44, Issue 7, Pages: 161-168(2020)
- 作者机构：
  
  1. 南方电网科学研究院有限责任公司，广东省广州市 510663
  2. 华南理工大学电力学院，广东省广州市 510640
- 作者简介：
- 基金信息：
  
  Science and Technology Project of China Southern Power Grid Company Limited;the Doctoral Program of Guangdong Natural Science Foundation of China
- DOI：10.7500/AEPS20190320013
  CLC：
- Received：20 March 2019，
  
  Revised：2019-08-01，
  
  Published Online：26 February 2020，
  
  Published：10 April 2020
- 稿件说明：
移动端阅览
刘志文,董旭柱,邹林等.基于零序电流衰减周期分量的高阻接地故障区段定位[J].电力系统自动化,2020,44(7):161-168.

LIU Zhiwen,DONG Xuzhu,ZOU Lin,et al.Section Location Method for High Impedance Grounding Fault Based on Declining Periodic Component of Zero Sequence Current[J].Automation of Electric Power Systems,2020,44(7):161-168.
刘志文,董旭柱,邹林等.基于零序电流衰减周期分量的高阻接地故障区段定位[J].电力系统自动化,2020,44(7):161-168. DOI： 10.7500/AEPS20190320013.

LIU Zhiwen,DONG Xuzhu,ZOU Lin,et al.Section Location Method for High Impedance Grounding Fault Based on Declining Periodic Component of Zero Sequence Current[J].Automation of Electric Power Systems,2020,44(7):161-168. DOI： 10.7500/AEPS20190320013.

摘要

消弧线圈接地配电网发生高阻接地故障的概率较大，现有的故障检测和区段定位方法存在准确度低，实现难度大等问题。文中分析了消弧线圈接地配电网发生高阻接地故障时的并联谐振过程，研究了零序暂态衰减周期分量在故障点上下游的分布特征，得出了故障点上游和下游的零序电流衰减周期分量在相位上存在较大差别的结论。提出了一种基于零序电流衰减周期分量的高阻接地故障区段定位方法。该方法由配电自动化主站收集线路中各故障区段定位终端计算的零序电流衰减周期分量相位，并利用该相位和估算的过渡电阻判断故障区段。基于实时数字仿真系统（RTDS）对所提区段定位方法进行了仿真验证，结果表明该方案具有较好的准确性和可行性。

Abstract

High impedance grounding faults occur frequently in distribution network with arc suppression coil grounding. There are some problems in existing fault detection and location methods

such as low accuracy and difficulty in implementation. Parallel resonance process is analyzed when high impedance grounding fault occurs in distribution network with arc suppression coil grounding， and the distribution characteristics and the phase differences of the declining periodic component of zero sequence current at the upstream and downstream of the fault points are also investigated. A fault section location method for a high impedance grounding fault based on the declining periodic component of zero sequence current is proposed in this paper. The main station in distribution automation collects the phases of declining periodic component of zero sequence current calculated by the fault location units of each fault section in the feeder

then the phases and estimated transition resistance are used to select the fault section. The proposed fault location method is verified by RTDS simulation

and the results show that the proposed method is accurate and feasible.

关键词

Keywords

references

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刘志文(1980—)，男，通信作者，博士，高级工程师，主要研究方向：智能配电网规划、运行与控制。 E-mail : lzw 32347 @ 126 . com

董旭柱(1970—)，男，博士，教授级高级工程师，国家“千人计划”特聘专家，主要研究方向：智能配电网自愈控制。

邹林(1983—)，男，硕士，高级工程师，主要研究方向：继电保护和配电自动化。

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