A New Fault Line Selection Method for Cable Network

YUAN Shun1; ZHANG Lei1; CAI Zhi-yuan1; SONG Yun-dong3

doi:10.13296/j.1001-1609.hva.2011.01.012

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A New Fault Line Selection Method for Cable Network

更新时间：2025-04-26

- A New Fault Line Selection Method for Cable Network
- High VoltageApparatus Vol. 47, Issue 1, Pages: 43-48(2011)
- 作者机构：
  
  1. 沈阳工业大学电气工程学院
  2. 国家电监会东北监管局
  3. 特变电工沈阳变压器集团有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.01.012
  CLC： TM862
- Published：2011
- 稿件说明：
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[1]苑舜,张磊,蔡志远,宋云东.电缆网故障选线方法的研究[J].高压电器,2011,47(01):43-48.

YUAN Shun1, ZHANG Lei1, CAI Zhi-yuan1, et al. A New Fault Line Selection Method for Cable Network[J]. High voltageapparatus, 2011, 47(1): 43-48.
[1]苑舜,张磊,蔡志远,宋云东.电缆网故障选线方法的研究[J].高压电器,2011,47(01):43-48. DOI： 10.13296/j.1001-1609.hva.2011.01.012.

YUAN Shun1, ZHANG Lei1, CAI Zhi-yuan1, et al. A New Fault Line Selection Method for Cable Network[J]. High voltageapparatus, 2011, 47(1): 43-48. DOI： 10.13296/j.1001-1609.hva.2011.01.012.

摘要

对电缆网故障选线方法的研究一直是配电网故障研究的重点。笔者提出一种基于小波分析的暂态群体比幅比相法为主、暂态能量法为辅的故障选线法

并运用EMTP数字仿真工具搭建了一个10kV电缆网配电系统模型

进行了仿真实验。仿真结果证明该法能够准确地识别故障发生时刻

不受电压故障时刻、接地电阻大小等因素对故障选线的影响

抗干扰能力强

对故障线路识别率高

仿真图形中具有明显的故障特征信息

而且故障选线方法的主判据与辅判据具有良好的融合性

大大提高了故障选线的准确性。

Abstract

Research of cable network fault line selection method has been the focus in the fault study of distribution system.Based on the wavelet analysis

we proposed a new fault line selection method by employing the comparison method of transient population amplitudes and phases with supplementation of the transient energy method

established a 10 kV cable network distribution system model by adopting EMTP digital simulation tools

and performed a simulation experiment.Simulation results show that the present method can accurately catch the fault moment without the influences of such factors as voltage fault time and grounding resistance on selection of fault line.Its anti-interference ability and recognition rate of the fault lines are improved

and the fault feature information is obvious in the simulation graphics.The main criteria and the supplementary criterion for fault line selection can fuse very well.Hence

the accuracy of fault line selection is improved significantly.

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