Impact of Magnetostrictive Effect on Ultrasonic Detection of GIS Partial Discharge and Example Analysis

SONG Fangchao; LIANG Wen; ZHANG Chunxu; LIN Congyu; SONG Guanghui; JIN Aimin; MAN Chaonan

doi:10.13296/j.1001-1609.hva.2019.03.036

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Impact of Magnetostrictive Effect on Ultrasonic Detection of GIS Partial Discharge and Example Analysis

更新时间：2025-04-26

- Impact of Magnetostrictive Effect on Ultrasonic Detection of GIS Partial Discharge and Example Analysis
- High VoltageApparatus Vol. 55, Issue 3, Pages: 234-238(2019)
- 作者机构：
  
  国网烟台供电公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.03.036
  CLC： TM855
- Published：2019
- 稿件说明：
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[1]宋方超,梁雯,张春旭,林丛玉,宋光辉,金爱民,满超楠.磁致伸缩效应对GIS超声波局部放电检测的影响及实例分析[J].高压电器,2019,55(03):234-238.

SONG Fangchao, LIANG Wen, ZHANG Chunxu, et al. Impact of Magnetostrictive Effect on Ultrasonic Detection of GIS Partial Discharge and Example Analysis[J]. High voltageapparatus, 2019, 55(3): 234-238.
[1]宋方超,梁雯,张春旭,林丛玉,宋光辉,金爱民,满超楠.磁致伸缩效应对GIS超声波局部放电检测的影响及实例分析[J].高压电器,2019,55(03):234-238. DOI： 10.13296/j.1001-1609.hva.2019.03.036.

SONG Fangchao, LIANG Wen, ZHANG Chunxu, et al. Impact of Magnetostrictive Effect on Ultrasonic Detection of GIS Partial Discharge and Example Analysis[J]. High voltageapparatus, 2019, 55(3): 234-238. DOI： 10.13296/j.1001-1609.hva.2019.03.036.

摘要

通过对组合电器（gas insulated switchgear

GIS）进行带电检测可以有效发现设备内部缺陷引起的局部放电。为了提高组合电器超声波局放检测的准确性

避免因误判断引起不必要的停电检修

文中通过一现场检测实例

分析在超声波局放检测中磁致伸缩效应与悬浮放电、机械振动的差异。结果表明当有较大负荷电流流过钢制三相分箱式组合电器时

其壳体表面材料分子会产生具有100 Hz频率相关性特征的周期性扰动

其幅值与流经的负荷电流大小成正比

最后提出区分磁致伸缩噪声与放电信号的方法。

Abstract

To improve the ultrasonic detection accuracy of partial discharge in gas insulated switchgear（GIS）and avoidpower outage caused by false judgment

the difference between the magnetostrictive effect and the suspended dischargeand mechanical vibration in the ultrasonic detection of partial discharge is analyzed through an on-site testing instance.Result shows that the surface molecules of the GIS shell material produce 100 Hz periodic vibration with correlation char-acteristics when larger load current flows past the three-phase box of steel GIS

and the vibration amplitude is proportion-al to the load current. In addition

a method for distinguishing magnetostrictive noise and discharge signal is put forward.

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Related Institution

State Grid Xinjiang Electric Power Co., Ltd.

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College of Nuclear Technology and Automation Engineering, Chengdu University of Technology

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