Influence of Damage and Wet Contamination on Spatial Electric Field of 35 kV Composite Insulator

LYU Fangcheng; WANG Zihao; NIU Leilei; LI Wei; WANG Shenghui; XIE Qing

doi:10.13296/j.1001-1609.hva.2026.01.016

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Influence of Damage and Wet Contamination on Spatial Electric Field of 35 kV Composite Insulator

Research & Analysis | 更新时间：2026-04-13

- Influence of Damage and Wet Contamination on Spatial Electric Field of 35 kV Composite Insulator
- High Voltage Apparatus Vol. 62, Issue 1, Pages: 127-133(2026)
- 作者机构：
  
  华北电力大学河北省输变电设备安全防御重点实验室，河北保定　071000
  华北电力大学新能源电力系统国家重点实验室，北京　102200
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.01.016
  CLC：
- Received：13 June 2025，
  
  Revised：2025-09-16，
  
  Published：16 January 2026
- 稿件说明：
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LYU Fangcheng, WANG Zihao, NIU Leilei, et al. Influence of Damage and Wet Contamination on Spatial Electric Field of 35 kV Composite Insulator[J]. High Voltage Apparatus, 2026, 62(1): 127-133.
DOI：

LYU Fangcheng, WANG Zihao, NIU Leilei, et al. Influence of Damage and Wet Contamination on Spatial Electric Field of 35 kV Composite Insulator[J]. High Voltage Apparatus, 2026, 62(1): 127-133. DOI： 10.13296/j.1001-1609.hva.2026.01.016.

摘要

复合绝缘子在长期辐照、盐雾、鸟啄等因素的综合作用下，会产生伞裙护套破损及表面湿污等缺陷，威胁电力系统正常运行。文中搭建了基于EHP-50F电场传感器的绝缘子空间电场测试平台，建立了FXBW4-35/70棒形悬式复合绝缘子的1∶1三维仿真模型，从试验和仿真两个方面研究了复合绝缘子伞裙护套破损及其表面存在湿污时的空间电场分布特征。结果表明：伞裙破损位置处空间电场强度下降，当破损位于低压侧时变化最大，试验和仿真值分别下降了23.29%和22.23%；护套破损位置处空间电场强度上升，且测量距离越小空间电场强度变化越大，当测量距离为3cm时提高了0.098 kV/cm；破损绝缘子上的湿污会进一步畸变其场强，随

的增加该畸变程度增加，当

=1.5 mg/cm

时，试验和仿真值分别提高了25.83%和23.35%。研究绝缘子伞裙护套破损及表面湿污情况下的空间电场分布特征对绝缘子表面状态监测等具有重要意义。

Abstract

Composite insulators

under such joint action as long term irradiation

salt spray and bird pecking

will produce such defects as damage to the shed sheath and surface contamination

and threaten normal operation of power system. The insulator space electric field test platform based on the EHP-50F electric field sensor is set up in this paper

and the 1∶1 three-dimensional si

mulation model of the FXBW4-35/70 rod-shaped suspension composite insulator is set up. The characteristics of the spatial electric field distribution in case of shed sheath damage and as well as wet contamination on its surface of the composite insulator are studied from the aspects of both test and simulation. The results show that the spatial field strength at the damaged position of the shed decreases and the variation is maximum when the damage is at the low-voltage side. The test and simulated values have dropped by 23.29% and 22.23% respectively.The spatial electric field strength at the damaged position of the sheath increases. The smaller the measuring distance is

the greater the variation of the spatial field strength is.When the measurement distance is 3 cm

it has increased by 0.098 kV/cm.The wet contamination on the damaged insulator will further distort the field strength

and the magnitude of the distortion will increase with the increase of

. When

=0.15 mg/cm

the test and simulation values are increased by 25.83% and 23.35% respectively. It is of great significance to study the characteristics of the spatial electric field distribution in case of shed sheath damage and wet contamination of surface of the composite insulator for the surface status monitoring of the insulator.

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