Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP<sub>2</sub>-160 Porcelain Insulator Strings After Wildfire

QUAN Xincheng; HUANG Daochun; LI Peng; XU Haiwen; ZHANG Hu; WU Wenhua

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Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP₂-160 Porcelain Insulator Strings After Wildfire

更新时间：2026-03-18

- Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP₂-160 Porcelain Insulator Strings After Wildfire
- High VoltageApparatus (2026)
- 作者机构：
  
  1.湖北省输电线路工程技术研究中心（三峡大学），宜昌443002
  2.三峡大学电气与新能源学院，宜昌443002
  3.武汉大学电气与自动化学院，武汉430072
  4.中国电力科学院研究院有限公司，武汉430074
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51677138)
- DOI：
  CLC： TM75
- Received：03 September 2025，
  
  Revised：2025-11-30，
  
  Accepted：15 December 2025，
- 稿件说明：
移动端阅览
QUAN Xincheng, HUANG Daochun, LI Peng, et al. Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP₂-160 Porcelain Insulator Strings After Wildfire[J/OL]. High VoltageApparatus, 2026.
DOI：

QUAN Xincheng, HUANG Daochun, LI Peng, et al. Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP₂-160 Porcelain Insulator Strings After Wildfire[J/OL]. High VoltageApparatus, 2026. DOI：

摘要

山火过火后植被燃烧产生的灰烬颗粒会附着在绝缘子表面，灰烬颗粒作为导电性质的污秽会对绝缘子的绝缘性能产生影响。本文通过烧损试验获取植被燃烧灰烬颗粒，并以3片串XWP

-160瓷绝缘子为试品开展闪络试验，研究了灰烬颗粒浓度（

）、初始盐密（ISD）和灰烬附着面积（

）对绝缘子闪络电压以及泄漏电流的影响规律。研究表明：随着

的增加，染污绝缘子的闪络电压近似呈线性降低，泄漏电流峰值呈指数为正的幂函数增加，与无灰烬附着下的情况相比，闪络电压降低19.8%~31.5%，泄漏电流峰值升高16.6%~44.4%；在灰烬附着情况下，随着ISD的增加，绝缘子的闪络电压呈指数为负的幂函数形式降低，且

变化对染污绝缘子闪络电压以及泄漏电流峰值的影响逐渐变小；随着

的增大，闪络电压逐渐降低，泄漏电流峰值逐渐升高，两者的变化均呈现“初期平缓-中期显著-后期趋缓”的趋势。研究成果可为山火过火后输电线路绝缘子风险评估模型构建以及运行维护策略提供参考。

Abstract

The ash particles produced by the burning of vegetation after a wildfire can adhere to the surface of insulators. As conductive contaminants

these ash particles can affect the insulation performance of insulators. In this paper

ash particles from the burning of vegetation were obtained through a burn loss test

and flashover tests were conducted on three-string XWP

-160 porcelain insulators to study the influence of ash particle concentration (

)

initial salt density (ISD)

and ash attachment area (

) on the flashover voltage and leakage current of insulators. The research shows that as

increases

the flashover voltage of contaminated insulators decreases approximately linearly

and the peak leakage current increases as a power function with a positive exponent. Compared with the situation without ash attachment

the flashover voltage decreases by 19.8% to 31.5%

and the peak leakage current increases by 16.6% to 44.4%. Under the condition of ash attachment

as ISD increases

the flashover voltage of insulators decreases as a power function with a negative exponent

and the influence of

changes on the flashove

r voltage and peak leakage current of contaminated insulators gradually decreases. As

increases

the flashover voltage gradually decreases

and the peak leakage current gradually increases. Both show a trend of "initially gentle - significantly in the middle - gradually slowing down in the later stage". The research results can provide a reference for the construction of risk assessment models and operation and maintenance strategies for insulators on transmission lines after wildfire.

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⁰

Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP2-160 Porcelain Insulator Strings After Wildfire

DOI：

摘要

Abstract

关键词

Keywords

references

Influence of Ash Particle Adhesion on AC Pollution Flashover Characteristics of XWP₂-160 Porcelain Insulator Strings After Wildfire