电瓷避雷器Issue(5)：112-119,8.DOI:10.16188/j.isa.1003-8337.2025.05.014
雷击线路瓷绝缘子事故热损伤分析
Analysis of Thermal Damage Caused by Lightning Strike on Porcelain Insulators in Power Transmission Lines
张小军 1沈厚明 2庄文兵 1张燕春 3赵越 3罗辉 4漆思怡 1杜雨欣5
作者信息
- 1. 国网新疆电力有限公司电力科学研究院,乌鲁木齐 830013||新疆输变电设备极端环境运行与检测技术重点实验室,乌鲁木齐 830013
- 2. 南瑞集团(国网电力科学研究院)有限公司,南京 211106||国网电力科学研究院武汉南瑞有限责任公司,武汉 430074
- 3. 新疆送变电有限公司,乌鲁木齐 830000
- 4. 国网新疆巴州供电公司,新疆库尔勒 841000
- 5. 西安高压电器研究院股份有限公司,西安 710077
- 折叠
摘要
Abstract
In response to the accident of porcelain insulators string dropping due to lightning strike in a 750 kV transmission line,the author studied the causes of the accident from two aspects:theoretical sim-ulation analysis and experimental verification.The electrical thermal mechanical coupling analysis of porcelain insulators under lightning current impact was carried out,and the temperature field and stress field distribution of porcelain insulators under lightning current impact were obtained.Electrical and me-chanical experiments were conducted for verification.The analysis results show that when the porcelain insulator string of the line is struck by lightning,the high heat generated inside the insulator causes ex-cessive thermal stress in the cement bonding body,resulting in debonding cracks and thermal damage to the insulator,leading to string dropping accidents.关键词
瓷绝缘子/水泥胶合体/雷电冲击/温度场/热应力Key words
porcelain insulators/cement adhesive composite/lightning impulse/temperature field/ther-mal stress引用本文复制引用
张小军,沈厚明,庄文兵,张燕春,赵越,罗辉,漆思怡,杜雨欣..雷击线路瓷绝缘子事故热损伤分析[J].电瓷避雷器,2025,(5):112-119,8.
