Study on Detection Method of Transformer Winding Slight Fault Based on the Waveform Similarity of Equivalent Excitation Inductance

DENG Xiangli; YAO Yuanyuan; TU Yong

doi:10.13296/j.1001-1609.hva.2018.12.025

您当前的位置：

首页 >

文章列表页 >

Study on Detection Method of Transformer Winding Slight Fault Based on the Waveform Similarity of Equivalent Excitation Inductance

更新时间：2025-04-26

- Study on Detection Method of Transformer Winding Slight Fault Based on the Waveform Similarity of Equivalent Excitation Inductance
- High VoltageApparatus Vol. 54, Issue 12, Pages: 165-173(2018)
- 作者机构：
  
  1. 上海电力学院电气工程学院
  2. 国网四川省电力公司凉山供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.12.025
  CLC： TM855
- Published：2018
- 稿件说明：
移动端阅览
[1]邓祥力,姚媛媛,涂勇.基于等效励磁电感波形相似度的变压器绕组轻微故障检测方法研究[J].高压电器,2018,54(12):165-173.

DENG Xiangli, YAO Yuanyuan, TU Yong. Study on Detection Method of Transformer Winding Slight Fault Based on the Waveform Similarity of Equivalent Excitation Inductance[J]. High voltageapparatus, 2018, 54(12): 165-173.
[1]邓祥力,姚媛媛,涂勇.基于等效励磁电感波形相似度的变压器绕组轻微故障检测方法研究[J].高压电器,2018,54(12):165-173. DOI： 10.13296/j.1001-1609.hva.2018.12.025.

DENG Xiangli, YAO Yuanyuan, TU Yong. Study on Detection Method of Transformer Winding Slight Fault Based on the Waveform Similarity of Equivalent Excitation Inductance[J]. High voltageapparatus, 2018, 54(12): 165-173. DOI： 10.13296/j.1001-1609.hva.2018.12.025.

摘要

针对大型电力变压器绕组轻微匝间短路故障、匝间电弧放电故障在线检测困难的情况

文中提出了基于等效励磁电感波形相似度的变压器绕组轻微故障的检测方法。通过分析等效励磁电感在变压器不同工况下的特征

利用Hausdorff距离量化等效励磁电感在不同工况下波形之间的差异。与此同时

为了消除等效励磁电感的测量误差

使用小波熵阈值滤波方法对数据进行预处理

并利用余弦多项式分解重构信号的方法消除等效励磁电感的零点误差

提高了等效励磁电感的计算精度。最后搭建了变压器绕组轻微匝间故障、绕组电弧故障的仿真模型

对所提出的方法进行了仿真验证

仿真结果表明

该方案能够可靠的识别变压器绕组的轻微匝间故障和匝间电弧放电故障。

Abstract

In view of the difficulty of online detection of slight failure and partial arc discharge fault of large power transformer winding.In this paper

the waveform similarity of equivalent excitation inductance analysis method based on Hausdorff distance is proposed to realize the online detection of winding slight failure.In order to eliminate the measurement error of the equivalent excitation inductance

the use of the wavelet entropy threshold filtering method of data preprocessing

and uses the cosine decomposition method to eliminate the zero error of equivalent excitation inductance

ensure the calculation precision of the equivalent excitation inductance.Finally

the simulation model of transformer winding slight failure is built

and the simulation results are verified.The test results show that the schemes can reliable identification of slight fault of transformer winding.

关键词

Keywords

references

Views

125

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

No data

Related Author

No data

Related Institution

No data

⁰