Research on Vibration-based Damage Detection Method of Porcelain Insulators

LI Xiao-hong; GUO Hui-ying; LIU Yun; LI Jing

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Research on Vibration-based Damage Detection Method of Porcelain Insulators

更新时间：2025-04-26

- Research on Vibration-based Damage Detection Method of Porcelain Insulators
- High VoltageApparatus Vol. 45, Issue 1, Pages: 101-103(2009)
- 作者机构：
  
  武汉大学动力与机械学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM216
- Published：2009
- 稿件说明：
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[1]李晓红,郭慧英,刘云,李静.基于振动法检测的瓷绝缘子损伤探讨[J].高压电器,2009,45(01):101-103.

LI Xiao-hong, GUO Hui-ying, LIU Yun, et al. Research on Vibration-based Damage Detection Method of Porcelain Insulators[J]. High voltageapparatus, 2009, 45(1): 101-103.
[1]李晓红,郭慧英,刘云,李静.基于振动法检测的瓷绝缘子损伤探讨[J].高压电器,2009,45(01):101-103. DOI：

LI Xiao-hong, GUO Hui-ying, LIU Yun, et al. Research on Vibration-based Damage Detection Method of Porcelain Insulators[J]. High voltageapparatus, 2009, 45(1): 101-103. DOI：

摘要

为减少在役支柱绝缘子断裂事故

提高其检出率及检测速度

笔者首次研究了将整体损伤检测法——振动法引入绝缘子检测的可行性

并设计了4个试样绝缘子的自由悬挂与地面放置状态试验

用力锤激励绝缘子使其振动并采集加速度响应信号

对采集的信号分别进行频谱分析和小波包分析

以提取损伤特征参数

并比较这两种信号处理方法的优劣。结果表明

用3层小波包分解的信号处理方法可有效检测出支柱绝缘子4 mm深的裂纹损伤。

Abstract

In order to cut down the cracking accidents of in-service porcelain insulators

enhance the detectable rate and detecting velocity of a detection method

this paper proposed a vibration-based damage detection method for detecting insulators by making use of the global damage detection method.Four freely suspended or on-ground porcelain insulators were tested with an aluminum hammer activating them Vibration signal and acceleration response were analyzed respectively with frequency spectrum analysis and wavelet packet analysis to achieve fault characteristic parameter.The results indicated that a 4mm deep defect could be effectively detected by utilizing wavelet packet analysis.

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Related Institution

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武汉大学动力与机械学院湖北武汉430072

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