NEW APPROACH TO IDENTIFYING THE SINGLE-PHASE GROUNDING FAULT LINE FOR THE ISOLATED NEUTRAL DISTRIBUTION NETWORK

CUI Liang-guang; FAN Yu-mei; LIANG Li-bo; ZHANG Xue-dan

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NEW APPROACH TO IDENTIFYING THE SINGLE-PHASE GROUNDING FAULT LINE FOR THE ISOLATED NEUTRAL DISTRIBUTION NETWORK

更新时间：2025-04-26

- NEW APPROACH TO IDENTIFYING THE SINGLE-PHASE GROUNDING FAULT LINE FOR THE ISOLATED NEUTRAL DISTRIBUTION NETWORK
- High VoltageApparatus Issue 3, Pages: 51-52+56(2003)
- 作者机构：
  
  1.   中原油田分公司
  2.   中原油田设计院
  3.   中原油田设计院河南濮阳 457001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM862
- Published：2003
- 稿件说明：
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[1]崔联广,范玉梅,梁利波,张雪丹.中性点不接地电网单相接地选线新方法[J].高压电器,2003(03):51-52+56.

CUI Liang-guang, FAN Yu-mei, LIANG Li-bo, et al. NEW APPROACH TO IDENTIFYING THE SINGLE-PHASE GROUNDING FAULT LINE FOR THE ISOLATED NEUTRAL DISTRIBUTION NETWORK[J]. High voltageapparatus, 2003, (3): 51-52+56.
[1]崔联广,范玉梅,梁利波,张雪丹.中性点不接地电网单相接地选线新方法[J].高压电器,2003(03):51-52+56. DOI：

CUI Liang-guang, FAN Yu-mei, LIANG Li-bo, et al. NEW APPROACH TO IDENTIFYING THE SINGLE-PHASE GROUNDING FAULT LINE FOR THE ISOLATED NEUTRAL DISTRIBUTION NETWORK[J]. High voltageapparatus, 2003, (3): 51-52+56. DOI：

摘要

随着中压电网中性点不接地供电网系统的不断扩大

单相接地电容电流也在不断增加

正确判别电网接地点

是关系到电网运行可靠性的关键技术问题。笔者就目前电网的单相接地选线方法进行了分析和探讨

指出采用零序电流相对相位法和零序电流5次谐波法选线所存在问题

提出利用单相接地故障时出现的零序分量的特点

从“能量”观点实现选线的新方法。

Abstract

As the enlargement of power distribution network with isolated neutral and the increase of capacitive current of single-phase grounding

correct identification of earthing point has become a key issue regarding to the reliability of electrical network operation. This paper discusses the present identification methods and mentions the disadvantages of them and arises a new method from the view point of the energy

which utilizes the feature of zero sequence component coming from the single-phase earthing fault.

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