Infuence of Damaged Shed on Electric Field Characteristics of Catenary Oblique Wrist Arm Insulators

DUAN Chengcheng; ZHANG Tingrong; HU Yanwen; BAI Yufa

doi:10.13296/j.1001-1609.hva.2026.02.017

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Infuence of Damaged Shed on Electric Field Characteristics of Catenary Oblique Wrist Arm Insulators

Research & Analysis | 更新时间：2026-03-16

- Infuence of Damaged Shed on Electric Field Characteristics of Catenary Oblique Wrist Arm Insulators
- High Voltage Apparatus Vol. 62, Issue 2, Pages: 136-142(2026)
- 作者机构：
  
  兰州交通大学自动化与电气工程学院，兰州 730070
  中国铁路青藏集团有限公司，西宁 810000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.02.017
  CLC：
- Received：21 July 2025，
  
  Revised：2025-10-01，
  
  Published：16 February 2026
- 稿件说明：
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DUAN Chengcheng, ZHANG Tingrong, HU Yanwen, et al. Infuence of Damaged Shed on Electric Field Characteristics of Catenary Oblique Wrist Arm Insulators[J]. High Voltage Apparatus, 2026, 62(2): 136-142.
DOI：

DUAN Chengcheng, ZHANG Tingrong, HU Yanwen, et al. Infuence of Damaged Shed on Electric Field Characteristics of Catenary Oblique Wrist Arm Insulators[J]. High Voltage Apparatus, 2026, 62(2): 136-142. DOI： 10.13296/j.1001-1609.hva.2026.02.017.

摘要

西部地区自然环境复杂，因人为及非人为因素造成接触网瓷质绝缘子破损的情况较多。为了研究伞裙破损对接触网安全运行的影响，文中建立了不同破损大小、不同破损位置、两处破损组合、不同表面状态下斜腕臂绝缘子的仿真模型，利用有限元软件分析了其电场分布特性。仿真结果表明：伞裙破损半径越大，破损处表面电场强度越大，相比完好绝缘子，破损半径达到30 mm时电场强度增加了30.11%；相同破损半径时，伞裙破损出现在高压端时电场强度增加幅度最大；两处破损时，相对位置夹角越大，电场强度增加幅度越小，当破损在高压端与中压端且夹角为0°时，电场强度增加了47.31%；当绝缘子破损处积水或上表面覆水时，电场强度急剧增加，相比完好绝缘子，电场强度分别增加了129.57%和260.22%。研究结果可为斜腕臂绝缘子的运营检修提供数据支撑。

Abstract

The natural environment in western regions of China is complex

leading to a numerous instances of damage to the catenary porcelian insulators due to both human and non-human factors. For studying the influence of the damaged shed on safe operation of the catenary systems

the simulation model of the catenary oblique swage aram insulators simulation with different damage magnitude

different damage locations

combination of two damage positions and different surface conditions is set up

and its electric field distribution characteristics are analyzed using finite element software. The simulation results show that the larger the damage radius of the damaged shed

the higher the surface electric field intensity at the damaged position and

compared with intact insulators

the electric field intensity is increased by 30.11% with the damaged radius reaching 30 mm. In case of same damaged radius and the shed damage at high-voltage side

the increase amplitude of the eielctric field intensity is the maximum.While

in case of damage at two positions

the larger the relative positions

the smaller the increase amplitue of electric field intensity.When the damage is between the high voltage and low voltage ends and the inclination angle is 0°

the electric field intensity is increased by 47.31%.In case of water accumulation or surface covered with water at the damaged insulator

the electric field intensity is increased significantly and

compared with the intact insulator

the electric field intensity is increased by 129.57% and 260.22%

respectively. The study findings can provide valuable data support for the operation and maintenance of catenary catenary oblique swage aram insulators.

关键词

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references

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