Characteristics of Acoustic Signal from Free Moving Metallic Particles in Gas Insulated Switchgear

黎大健 1; 杨景刚 1; 梁基重 1; 吴磊 1; 郑小川 2; 罗永芬 1; 李彦明 1

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Characteristics of Acoustic Signal from Free Moving Metallic Particles in Gas Insulated Switchgear

更新时间：2025-12-08

- Characteristics of Acoustic Signal from Free Moving Metallic Particles in Gas Insulated Switchgear
- Vol. 43, Issue 2, Pages: 101-105(2009)
- 作者机构：
  
  西安交通大学电气工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM835
- Online First：10 February 2009，
  
  Published：2009
- 稿件说明：
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黎大健 1, 杨景刚 1, 梁基重 1, et al. Characteristics of Acoustic Signal from Free Moving Metallic Particles in Gas Insulated Switchgear[J]. 2009, 43(2): 101-105.
DOI：

黎大健 1, 杨景刚 1, 梁基重 1, et al. Characteristics of Acoustic Signal from Free Moving Metallic Particles in Gas Insulated Switchgear[J]. 2009, 43(2): 101-105. DOI：

摘要

为了研究气体绝缘开关(GIS)腔体内自由运动金属颗粒的超声波信号特性

首先简单分析了自由颗粒在电场中的受力

然后设计了一个模拟此类缺陷的模型

并测量了不同尺寸和形状的自由运动颗粒产生的超声波信号

最后分析了这些信号的工频相位相关性、幅值以及飞行时间等几个要素的特性.试验结果表明:当颗粒静止不动发生放电时

超声波信号幅值较小且有较强的相位相关性; 当颗粒自由跳动时

信号幅值非常大且相位相关性较弱

颗粒的尺寸和形状会影响颗粒的飞行时间; 与球状颗粒相比

丝状颗粒的飞行时间随电压的升高有更显著的变化

因此它们对GIS绝缘劣化的影响严重度不一样; 这些信号的幅值、颗粒飞行时间的变化分布具有周期性.

Abstract

To investigate the characteristics of acoustic signals emitted by free moving metallic particles in gas insulated switchgear(GIS)chamber

the force on free particles in GIS chamber is briefly described. And a test cell is designed to simulate this defect. Then a lot of acoustic signals emitted by particles with different shape and different size are measured to extract parameters of acoustic signals

such as the phase correlation

amplitude and flight time. The experimental results show that the acoustic signals are weak but with a strong phase correlation when the discharge is caused by the static particles in the enclosure

while the acoustic signals are strong with a weak phase correlation when the particles jump freely in the enclosure; and the flight time varies with the particle shape and size

and the cylindrical particle flight time is more sensitive to the test voltage than that of the spherical one

which means that they have different effects on the insulation of GIS; moreover

the signal amplitude and particle flight time possess periodicity.

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references

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贾江波. GIS中稍不均匀场内自由导电颗粒的运动特性与无害化方法研究[D]. 西安: 西安交通大学电气工程学院, 2007.

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