湖北电力2024，Vol.48Issue(5)：114-122,9.DOI:10.19308/j.hep.2024.05.016
超高压输电线路合成绝缘子芯棒发热缺陷成因分析及带电更换方法
Cause Analysis of Heating Defect of Synthetic Insulator Core Rod in EHV Transmission Line and Its Hot-Line Replacement Method
摘要
Abstract
With the wide application of synthetic insulators in EHV/UHV transmission,the aging problem is becoming more and more prominent,and the heating defect of insulator core rod has become an important hidden danger affecting the stable operation of the line.Based on typical cases,this paper analyzes in depth the heating defects of synthetic insulator core rod of 500 kV EHV transmission lines.Through the infrared temperature measure technology of UAV,the abnormal temperature rise phenomenon of insulator surface is identified,and the causes and influencing factors of heating defects are systematically discussed in combination with appearance inspection,hydrophobicity test and dissection test.In addition,effective methods of investigation and live defect elimination are put forward,and the safety and efficiency of live replacement are also ensured by combining gap calculation and reasonable selection of bearing tools.The research results provide theoretical support and technical guidance for coping with the heating of synthetic insulator core rod of extra-high voltage transmission lines,thus ensuing the long-term stable operation of the power system.关键词
超特高压输电/合成绝缘子/绝缘子芯棒/发热缺陷/红外测温/憎水性试验/剖检试验/无人机Key words
EHV/UHV transmission/synthetic insulator/insulator mandrel/heating defect/infrared temperature measure/hydrophobicity test/dissection test/UAV分类
信息技术与安全科学引用本文复制引用
熊继开,李嗣,唐嘉晖,张鼎,金哲,朱传刚,葛雄,雷雨,楚江平,张晓春..超高压输电线路合成绝缘子芯棒发热缺陷成因分析及带电更换方法[J].湖北电力,2024,48(5):114-122,9.基金项目
国网湖北省电力有限公司科技项目(项目编号:52152024000B). （项目编号:52152024000B）
