Research on Optimal Setting of Excitation Points for Defect Detection Method of Insulating Spacer Based on Ultrasonic Guided Wave

LI Yang; TANG Yan; ZHOU Jinwang; YANG Jianfeng; GAO Enguang; CHEN Keda; WANG Zhe; WANG Jian

doi:10.13296/j.1001-1609.hva.2026.02.016

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Research on Optimal Setting of Excitation Points for Defect Detection Method of Insulating Spacer Based on Ultrasonic Guided Wave

Research & Analysis | 更新时间：2026-03-16

- Research on Optimal Setting of Excitation Points for Defect Detection Method of Insulating Spacer Based on Ultrasonic Guided Wave
- High Voltage Apparatus Vol. 62, Issue 2, Pages: 128-135(2026)
- 作者机构：
  
  云南电网有限责任公司丽江供电局，云南丽江 674100
  华北电力大学电气与电子工程学院，北京 102206
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.02.016
  CLC：
- Received：18 July 2025，
  
  Revised：2025-10-10，
  
  Published：16 February 2026
- 稿件说明：
移动端阅览
LI Yang, TANG Yan, ZHOU Jinwang, et al. Research on Optimal Setting of Excitation Points for Defect Detection Method of Insulating Spacer Based on Ultrasonic Guided Wave[J]. High Voltage Apparatus, 2026, 62(2): 128-135.
DOI：

LI Yang, TANG Yan, ZHOU Jinwang, et al. Research on Optimal Setting of Excitation Points for Defect Detection Method of Insulating Spacer Based on Ultrasonic Guided Wave[J]. High Voltage Apparatus, 2026, 62(2): 128-135. DOI： 10.13296/j.1001-1609.hva.2026.02.016.

摘要

盆式绝缘子的健康状况对电网建设和运行具有重要影响。文中对超声导波检测盆式绝缘子缺陷进行有限元仿真，研究了多种缺陷情况下超声导波检测盆式绝缘子的可行性，发现当缺陷尺寸小，距离激励点远，且偏移激励点与接收点连线所在垂直平面的角度较大时，信号衰减率小，检测效果不理想。为达到更好的检测效果，文中提出了一种超声导波激励点的优化设置方案：除常用的激励点位置外，在绝缘子表面增设一组激励点位置，对于在常用激励点位置处检测效果较差的缺陷，利用绝缘子表面的激励位置进行检测。搭建实验平台对该方案进行验证，优化方案接收信号衰减率将提高10%左右，检测效果提升明显。该优化方案可为基于超声导波的盆式绝缘子缺陷检测提供参考。

Abstract

The health condition of insulating spacer has important influence on the construction and operation of power grid. In this paper

the finite element simulation of ultrasonic guided wave detection of the insulating spacer defect is carried out to study the feasibility of ultrasonic guided wave detection of the insulating spacer under various defect cases. It is foundthat when the defect size is small and the distance is far from the excitation point

and the angle of the vertical plane where the offset excitation point and the receiving point are located is large

the signal attenuation rate is small and the detection effect is not ideal. For achieving better detection effect

an optimal setting scheme of ultrasonic guided wave excitation points is proposed in this paper. In addition to the commonly used excitation points

a set of excitation points are added on the insulating spacer surface. As for the defects with weak detection effect at the commonly used excitation points

the excitation position on the insulating spacer surface is used for detection. The experimental platform is set up to verify the scheme. The received signal attenuation rate of the optimized scheme will be increased by about 10% and the detection effect will be significantly improved. The optimization scheme can provide reference for the defect detection of insulating spacer based on ultrasonic guided wave.

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references

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