基于零序电流非线性畸变特性的弧光高阻接地初期故障辨识方法

袁涛; 杨庆; 周桐; 刘红文; 李瑞桂

doi:10.13334/j.0258-8013.pcsee.232806

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基于零序电流非线性畸变特性的弧光高阻接地初期故障辨识方法

更新时间：2026-02-06

- 基于零序电流非线性畸变特性的弧光高阻接地初期故障辨识方法
- Issue 8, Pages: 3248-3260(2025)
- 作者机构：
  
  1. 输变电装备技术全国重点实验室(重庆大学电气工程学院)
  2. 云南电网有限责任公司电力科学研究院
  3. 河北旭辉电气股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13334/j.0258-8013.pcsee.232806
  CLC： TM862
- Published：2025
- 稿件说明：
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袁涛, 杨庆, 周桐, et al. 基于零序电流非线性畸变特性的弧光高阻接地初期故障辨识方法[J]. 2025, (8): 3248-3260.
DOI：

袁涛, 杨庆, 周桐, et al. 基于零序电流非线性畸变特性的弧光高阻接地初期故障辨识方法[J]. 2025, (8): 3248-3260. DOI： 10.13334/j.0258-8013.pcsee.232806.

摘要

弧光高阻接地故障是中低压配电网中最常见的故障，由于故障初期过渡电阻极大，故障信号微弱，亟需提出适应于该类故障的故障辨识方法以提高故障辨识的有效性和准确性。文章提出一种基于零序电流非线性畸变特征的弧光高阻接地初期故障辨识方法。通过搭建10 kV弧光高阻接地故障模拟试验平台获取故障零序电流，对试验数据进行滤波和分段处理，提出波形非线性畸变程度的定量表示方法，并基于波形非线性特性畸变提出3个故障特征量，通过设置故障判据实现弧光高阻接地初期故障辨识。与小波分析法、电流越限时间法、谐波法的对比结果表明，只有该方法能够识别过渡电阻高达80 kΩ的故障，能够有效应用于故障初期、极高过渡电阻阶段的弧光高阻接地故障辨识。研究结果对于配电网初期故障的辨识和防护具有一定的理论意义和工程应用价值。

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