Novel Detection Method and Its Application for Single Phase Grounding Fault in Distribution Network

QUE Bo; CHEN Lei; SHAO Xuejian

doi:10.13296/j.1001-1609.hva.2017.06.033

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Novel Detection Method and Its Application for Single Phase Grounding Fault in Distribution Network

更新时间：2025-04-26

- Novel Detection Method and Its Application for Single Phase Grounding Fault in Distribution Network
- High VoltageApparatus Vol. 53, Issue 6, Pages: 191-196(2017)
- 作者机构：
  
  国网浙江省电力公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.06.033
  CLC： TM862
- Published：2017
- 稿件说明：
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[1]阙波,陈蕾,邵学俭.一种配电网单相接地故障判断新方法及其应用[J].高压电器,2017,53(06):191-196.

QUE Bo, CHEN Lei, SHAO Xuejian. Novel Detection Method and Its Application for Single Phase Grounding Fault in Distribution Network[J]. High voltageapparatus, 2017, 53(6): 191-196.
[1]阙波,陈蕾,邵学俭.一种配电网单相接地故障判断新方法及其应用[J].高压电器,2017,53(06):191-196. DOI： 10.13296/j.1001-1609.hva.2017.06.033.

QUE Bo, CHEN Lei, SHAO Xuejian. Novel Detection Method and Its Application for Single Phase Grounding Fault in Distribution Network[J]. High voltageapparatus, 2017, 53(6): 191-196. DOI： 10.13296/j.1001-1609.hva.2017.06.033.

摘要

准确判断单相接地故障

是馈线自动化关键技术之一。基于时频谱突变原理

提出了一种利用Daubechies db4-db8小波变换提取突变特征量

运用非定项属性决策原则

进行单相接地故障施行判断方法。开发了相应的智能柱上开关;介绍了实际物理模拟试验结果;某山区配电网变电站的现场试运行表明

单相接地故障判断准确性达到100%

验证了该方法的准确性和实用性。

Abstract

The single phase grounding fault detection is one of the key technologies in distribution feeder automation.A novel spectrum sudden change theory based method for single phase grounding fault detection is proposed

in which the spectrum sudden changes of transient component in zero-sequence current is extracted by Daubechies db4-db8 wavelet analysis

and the indefinite properties decision principle is used to analysis the sudden changes and detect the fault.A new type of smart column switch using this method is developed.The real physical system testing is introduced with curves and data analysis.A real field pilot implement is taken in the feeder lines of a substation in mountain area

which proves the accuracy and success of the proposed method.

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