Multi-terminal PD Detection Technology of Transformer Based on Wide Bandwidth Pulse Current Method

LIU Hongliang; DING Bin; GAO Shuguo; QI Hui; ZHANG Xuanrui; LI Junhao

doi:10.13296/j.1001-1609.hva.2018.11.034

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Multi-terminal PD Detection Technology of Transformer Based on Wide Bandwidth Pulse Current Method

更新时间：2025-04-26

- Multi-terminal PD Detection Technology of Transformer Based on Wide Bandwidth Pulse Current Method
- High VoltageApparatus Vol. 54, Issue 11, Pages: 233-238+244(2018)
- 作者机构：
  
  1. 国网河北省电力有限公司电力科学研究院
  2. 国网河北省有限公司石家庄分公司
  3. 西安交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.11.034
  CLC： TM855
- Published：2018
- 稿件说明：
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[1]刘宏亮,丁斌,高树国,齐辉,张轩瑞,李军浩.基于宽频带脉冲电流法的变压器局部放电多端检测技术研究[J].高压电器,2018,54(11):233-238+244.

LIU Hongliang, DING Bin, GAO Shuguo, et al. Multi-terminal PD Detection Technology of Transformer Based on Wide Bandwidth Pulse Current Method[J]. High voltageapparatus, 2018, 54(11): 233-238+244.
[1]刘宏亮,丁斌,高树国,齐辉,张轩瑞,李军浩.基于宽频带脉冲电流法的变压器局部放电多端检测技术研究[J].高压电器,2018,54(11):233-238+244. DOI： 10.13296/j.1001-1609.hva.2018.11.034.

LIU Hongliang, DING Bin, GAO Shuguo, et al. Multi-terminal PD Detection Technology of Transformer Based on Wide Bandwidth Pulse Current Method[J]. High voltageapparatus, 2018, 54(11): 233-238+244. DOI： 10.13296/j.1001-1609.hva.2018.11.034.

摘要

为了多方面反映局部放电信号所含信息以及变压器绕组对局部放电信号传播的影响

文中在35 kV变压器构造悬浮放电和尖端放电缺陷

基于宽频带脉冲电流法测量局部放电发生时各检测点的脉冲信号

研究不同类型、不同位置的局部放电信号特征。研究表明

不同缺陷信号波形相似而统计特征不同;不同相放电时

套管末屏信号相较于铁心与中性点信号有明显变化;绕组对高频局放信号具有"选频"作用。

Abstract

To understand the information of partial discharge（PD）and the influence of transformer winding on PD signal propagation

two defect models of suspended discharge and point discharge are built in a 35 kV transformer.The signal at each detection point is measured based on the wide bandwidth pulse current method

and the character-istics of PD signals in different types and at different positions are analyzed. Result shows that: the signal waveformsof different defects are similar but their statistical characteristics are different;the signal from the bushing tap has amore significant change compared with the signals from the core and the neutral point of the winding when PD occurs in different phases;and the winding has a"frequency selection"effect for PD signal.

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