Joint Active-Passive Detection Method for Fault Section of Radial Feeder

Jun DONG; Yifan LI; Hongchun SHU; Jilai YU; Jie HE

doi:10.7500/AEPS20190613002

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Joint Active-Passive Detection Method for Fault Section of Radial Feeder

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

- Joint Active-Passive Detection Method for Fault Section of Radial Feeder
- Automation of Electric Power Systems Vol. 44, Issue 11, Pages: 135-143(2020)
- 作者机构：
  
  1.哈尔滨工业大学电气工程及自动化学院，黑龙江省哈尔滨市 150001
  2.昆明理工大学电力工程学院，云南省昆明市 650051
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China
- DOI：10.7500/AEPS20190613002
  CLC：
- Received：13 June 2019，
  
  Revised：2020-01-15，
  
  Published Online：03 April 2020，
  
  Published：10 June 2020
- 稿件说明：
移动端阅览
董俊,李一凡,束洪春等.放射型馈线故障段的主-被动联合检出方法[J].电力系统自动化,2020,44(11):135-143.

DONG Jun,LI Yifan,SHU Hongchun,et al.Joint Active-Passive Detection Method for Fault Section of Radial Feeder[J].Automation of Electric Power Systems,2020,44(11):135-143.
董俊,李一凡,束洪春等.放射型馈线故障段的主-被动联合检出方法[J].电力系统自动化,2020,44(11):135-143. DOI： 10.7500/AEPS20190613002.

DONG Jun,LI Yifan,SHU Hongchun,et al.Joint Active-Passive Detection Method for Fault Section of Radial Feeder[J].Automation of Electric Power Systems,2020,44(11):135-143. DOI： 10.7500/AEPS20190613002.

摘要

配电网拓扑复杂，仅依赖被动的检测方法不能灵敏可靠地反映故障位置。考虑中性点接地方式的变动规则，应用分布式自治模式检测故障前后及中性点变动前后量测到的故障量差异，可实现放射型馈线故障段主-被动联合检出及隔离。首先，利用主干馈线故障点上游与下游的暂态零序电流方向参数构建主干线故障段的被动检出判据；然后，根据消弧线圈补偿度变化前后首端监测工频零序电流相角差构建分支故障段的主动判据，完成放射型馈线故障段的主-被动联合检出；最后，确定故障区段后中性点投入小电阻，根据故障点上游零序电流变化来确定是否需故障隔离。该方法利用中性点运行方式的主动变动及配电自动化完成故障区段定位及隔离，简单易行，可增强配电网单相接地故障定位的可靠性，减小配电网主站负担。

Abstract

The topology of the distribution network is complex

and the passive detection method cannot reflect the fault location sensitively and reliably. Considering the variation rules of neutral grounding mode

the distributed autonomous mode is applied to detect the differences of fault amounts before and after the fault and the variation of neutral point

so as to realize the joint active-passive detection and isolation of radial feeder fault section. The passive detection criterion of the fault segment on the main line is constructed by the transient zero-sequence current direction parameters of the fault point upstream and downstream. According to the phase difference of the power-frequency zero-sequence current of the same monitoring point before and after the compensation variation of the arc suppression coil

the active criterion for the fault segment of the branch line are constructed

and the joint active-passive detection of the radial feeder fault segment is completed. After determining the fault segment

a small resistance is put at the neutral point

and the fault isolation is determined according to the zero-sequence current variation of the fault point upstream. The method utilizes the active variation of the neutral point operation mode and the distribution automation to complete the fault section location and isolation

which can enhance the section location reliability of the single-phase grounding fault of the distribution network

and reduce the burden of the main station in the distribution network.

关键词

Keywords

references

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