Research of GIS Bus Loose Contact Fault Diagnosis Techniques Based on Mechanical Vibration

HUANG Qing; WEI Xu; XU Jiangang; ZHOU Zhicheng

doi:10.13296/j.1001-1609.hva.2017.11.016

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Research of GIS Bus Loose Contact Fault Diagnosis Techniques Based on Mechanical Vibration

更新时间：2025-04-26

- Research of GIS Bus Loose Contact Fault Diagnosis Techniques Based on Mechanical Vibration
- High VoltageApparatus Vol. 53, Issue 11, Pages: 99-104+108(2017)
- 作者机构：
  
  1. 国网江苏省电力公司
  2. 国网江苏省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.11.016
  CLC： TM595
- Published：2017
- 稿件说明：
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[1]黄清,魏旭,许建刚,周志成.基于振动原理的GIS母线触头松动缺陷诊断技术研究[J].高压电器,2017,53(11):99-104+108.

HUANG Qing, WEI Xu, XU Jiangang, et al. Research of GIS Bus Loose Contact Fault Diagnosis Techniques Based on Mechanical Vibration[J]. High voltageapparatus, 2017, 53(11): 99-104+108.
[1]黄清,魏旭,许建刚,周志成.基于振动原理的GIS母线触头松动缺陷诊断技术研究[J].高压电器,2017,53(11):99-104+108. DOI： 10.13296/j.1001-1609.hva.2017.11.016.

HUANG Qing, WEI Xu, XU Jiangang, et al. Research of GIS Bus Loose Contact Fault Diagnosis Techniques Based on Mechanical Vibration[J]. High voltageapparatus, 2017, 53(11): 99-104+108. DOI： 10.13296/j.1001-1609.hva.2017.11.016.

摘要

笔者在分析GIS设备母线触头松动缺陷产生机械振动机理的基础上

研制了采用振动加速度传感器的GIS振动信号检测装置

并在实验室搭建了GIS机械振动检测试验平台

通过模拟GIS母线触头松动的机械缺陷

开展了GIS母线触头正常、松动两种情况下的试验研究

研究结果表明:不论GIS母线触头是否存在缺陷

在GIS绝缘盆子附近的外壳上都可以检测到明显的振动信号;正常运行时

各方向上的振动信号在1 400 Hz和100 Hz两个频率点上的幅值较高

且数值基本相等

比值约等于1;当GIS母线触头存在松动缺陷时

GIS壳体上检测到的振动信号在不同的方向上表现出不同的特征

选取1 400 Hz与100 Hz频率点对应幅值的比值可作为母线是否存在松动缺陷的判断特征量

当比值小于0.5或大于2时可初步判断存在母线松动缺陷。

Abstract

GIS bus contact terminals will produce mechanical vibrations if they have loose defects

based on this

a GIS vibration detector using vibration acceleration sensor is developed

a mechanical vibration diagnostic platform of GIS is established in laboratory.By simulating the mechanical defects of GIS bus contact terminals

measurements are carried out when the bus has a loose contact as well as no defects.The results indicate that obvious vibration signals can be detected in GIS shell near disc insulator whether there is a defect on GIS bus contact terminal or not.The vibration signals have outstanding amplitudes at the frequency of 1 400 Hz and 100 Hz and the ratio of two amplitudes is near 1.When the GIS bus contact terminal has a loose contact

the detected vibration signals from GIS shell will display the different characteristics at different directions.The ratio of amplitudes at 1 400 Hz and 100 Hz can be the characteristic quantity of loose defect.While the ratio is larger than 2 or smaller than 0.5

it can be preliminarily inferred that the loose defect exists.

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