Coupling Field Simulation and Experimental Verification of Heating Characteristics of Zero-value Insulator Strings Under Humid and Contaminated Condition

WANG Shenghui; MAI Jiamin; LI Bo

doi:10.13296/j.1001-1609.hva.2026.04.012

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Coupling Field Simulation and Experimental Verification of Heating Characteristics of Zero-value Insulator Strings Under Humid and Contaminated Condition

Research & Analysis | 更新时间：2026-04-08

- Coupling Field Simulation and Experimental Verification of Heating Characteristics of Zero-value Insulator Strings Under Humid and Contaminated Condition
- High Voltage Apparatus Vol. 62, Issue 4, Pages: 104-112(2026)
- 作者机构：
  
  华北电力大学电气与电子工程学院，北京 102206
  国网内蒙古东部电力有限公司电力科学研究院，呼和浩特 010000
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.04.012
  CLC：
- Received：10 September 2025，
  
  Revised：2025-11-29，
  
  Published：16 April 2026
- 稿件说明：
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WANG Shenghui, MAI Jiamin, LI Bo. Coupling Field Simulation and Experimental Verification of Heating Characteristics of Zero-value Insulator Strings Under Humid and Contaminated Condition[J]. High Voltage Apparatus, 2026, 62(4): 104-112.
DOI：

WANG Shenghui, MAI Jiamin, LI Bo. Coupling Field Simulation and Experimental Verification of Heating Characteristics of Zero-value Insulator Strings Under Humid and Contaminated Condition[J]. High Voltage Apparatus, 2026, 62(4): 104-112. DOI： 10.13296/j.1001-1609.hva.2026.04.012.

摘要

为研究严重大雾天气下污秽零值绝

缘子串的发热特性，文中建立了110 kV悬式瓷绝缘子串的电热耦合模型，分析了零值绝缘子在串中不同位置、不同污秽等级以及不同污秽分布对绝缘子串温度分布的影响特性，试验验证了仿真结果的有效性。研究表明：当盐密为0.04 mg/cm

的零值绝缘子串发热达到稳定时，串中零值绝缘子温度最低，而正常绝缘子温度明显增加，其增加的幅度受零值绝缘子的位置影响较大；污秽等级越高零值绝缘子串发热越严重，但串中零值绝缘子的温度随污秽等级提高其增加量最少，高压侧绝缘子温度增加较多，低压侧绝缘子温度增加最为明显。当绝缘子上、下表面有污秽层时，下表面污秽层引起的温度升高现象更严重，零值绝缘子温度分布曲线在两种污秽分布方式下趋势一致，正常绝缘子的表面温度最大值出现在高电阻区，温度最低值出现在低电阻区。污秽层在下盘面沿环带分布的不均匀度越大，绝缘子串的整体温度越高，盐密度增大时其影响减弱。

Abstract

For studying the heating characteristics of contaminated zero-value insulator strings under severe foggy weather

an electro-thermal coupling model of 110 kV suspended porcelain insulator sring is set up in this paper. The influence characteristics of zero-value insulators at different positions in the string

under different contamination grades and different contamination distributions on the temperature distribution of insulator strings

are analyzed. The effectiveness of the simulation results is verified by exteriment.The results show that when the salt density of the zerovalue insulator string reaches up to 0.04 mg/cm

the zero-value temperature in the string is the lowest

while the temperature of the normal insulators is significantly increased

and the increase magnitude is greatly affected by different zero-value positions. The higher the contamination level

the more serious the heating of zero-value insulator strings. However

the increase of the temperature of the zero-value insulator in the string is minimum with the increase of contamination grade.The increase of the insulator temperature at the high voltage side is more and that at the low voltage side is the most significant. In case of contamination layer on the upper and lower surface of the insulator

the rise of temperature due to the latter is most serious

the temperature distribution curve of the zero-value insulator shows the same trend under the two contamination distribution modes. The maximum surface temperature of normal insulator is in the high resistance zone a

nd the minimum value is at the low resistance zone. The greater the contamination nonuniformity along the disc on the lower surfaced

the higher the overall temperature of insulator strings

and its impact diminishes as the salt density increases.

关键词

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