Research on Influence of Crack Depth and Position on Vibration Detection of 220 kV Porcelain Post Insulators

DONG Guozhen; JING Shangqian; WANG Qing; LI Wenbin; LI Guowei; LYU Yadong; LI Xiaokang; ZHANG Zhe; ZONG Fangrui; WAN Shuting

doi:10.13296/j.1001-1609.hva.2025.08.021

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Research on Influence of Crack Depth and Position on Vibration Detection of 220 kV Porcelain Post Insulators

Research & Analysis | 更新时间：2025-08-08

- Research on Influence of Crack Depth and Position on Vibration Detection of 220 kV Porcelain Post Insulators
- High Voltage Apparatus Vol. 61, Issue 8, Pages: 161-169(2025)
- 作者机构：
  
  1.国网河北省电力有限公司电力科学研究院，石家庄　050021
  2.华北电力大学河北省电力机械装备健康维护与失效预防重点实验室，河北　保定　071003
- 作者简介：
- 基金信息：
  
  Science and Technology Project of State Grid Hebei Energy Technology Service Co., Ltd.(TSS2022-06)
- DOI：10.13296/j.1001-1609.hva.2025.08.021
  CLC：
- Received：22 January 2025，
  
  Revised：06 April 2025，
  
  Published：16 August 2025
- 稿件说明：
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DONG Guozhen, JING Shangqian, WANG Qing, et al. Research on Influence of Crack Depth and Position on Vibration Detection of 220 kV Porcelain Post Insulators[J]. High voltage apparatus, 2025, 61(8): 161-169.
DOI：

DONG Guozhen, JING Shangqian, WANG Qing, et al. Research on Influence of Crack Depth and Position on Vibration Detection of 220 kV Porcelain Post Insulators[J]. High voltage apparatus, 2025, 61(8): 161-169. DOI： 10.13296/j.1001-1609.hva.2025.08.021.

摘要

为解决基于振动特征的变电站220 kV瓷支柱绝缘子缺陷带电检测问题，以型号为B03.8-1的220 kV串联瓷支柱绝缘子为研究对象，深入研究了瓷支柱绝缘子裂纹的深度和位置对振动检测灵敏度的影响。首先采取SolidWorks软件建模，设置不同裂纹深度和位置的模型并导入Ansys软件中，利用脉冲信号模拟锤击进行瞬态分析，提取拾振点的加速度信号进行功率谱分析。然后搭建实验平台进行测试分析，仿真与实验结果表明：振动检测的灵敏度随着瓷支柱绝缘子裂纹深度的增加而增加；裂纹与下法兰的相对位置影响振动检测的灵敏度，其中裂纹位于第一伞裙和第二伞裙之间或距离下法兰底面过近时，振动检测的灵敏度较低；裂纹与瓷支柱绝缘子中心轴线的距离不影响振动检测的灵敏度。

Abstract

For solving the on line detection of the faulty 220 kV porcelain support insulator of substation based on the vibration characteritic

the 220 kV series-connected porcelain support insulators of model B03.8-1 is taken as the research object

the influence of crack depth and positionof the porcelain support insulator on the vibration detection sensitivity is deeply studied. Firstly

SolidWorks software is used for modelling

the models of different crack depths and positions are set and imported into Ansys software. The pulse signal is used to simulate hammering for transient analysis

and the acceleration signal at the pickup point is extracted for power spectrum analysis. Then

an experimental platform is set up for test analysis. The simulation and experimental results show that the sensitivity of vibration detection increases with the increase of crack depth of the porcelian support insulator. The relative position of the crack and the lower flange affects the sensitivity of vibration detection

in which in case the crack is located between the first shed and the second shed or is too close to the bottom surface of the lower flange

the vibration detection sensitivity is lower. However

the distance between the crack and the central axis of the insulator dose not affect the sensitivity of the vibration detection.

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