广东电力Issue(5)：103-108,6.DOI:10.3969/j.issn.1007-290X.2015.05.022
运行20年以上500 kV 输电线路绝缘子运行及抽检分析
Analysis on Operation and Spot Check on Insulators on 500 kV Power Transmission Lines Running for 20 Years
苏国磊 1陈欢 1韩玉康 2李文荣1
作者信息
- 1. 中国南方电网超高压输电公司检修试验中 心，广东广州 510663
- 2. 中国南方电网超高压输电公司，广东广州510663
- 折叠
摘要
Abstract
500 kV Tianguang one-circuit line has been running for 21 years.In order to correctly know well running state of insulators on the line and provide guidance for following operation and maintenance and technical supervision,this paper studies 71 pieces of glass in-sulators and one composite insulator of 5 sampling points.Test items included check on appearance and size,examination on fitting pin, test on clad layer,tolerance test on working frequency breakdown,heat shock test,temperature circulation test,test on mechanical falling load,test on residual mechanical strength,infrared check on operational voltage,hydrophobicity test,test on sealing property, tolerance test on rated mechanical load,and so on.The research results indicate that whole running states of glass insulators and com-posite insulators are relatively good and there is no serious degradation occurring,but degradation rate of some typed glass insulators is higher than standard requirement and surface hydrophobicity of some composite insulators greatly declines which should be focused on in following operation and maintenance.关键词
输电线路/绝缘子/劣化/抽检分析/试验Key words
power transmission line/insulator/degradation/spot check analysis/test分类
信息技术与安全科学引用本文复制引用
苏国磊,陈欢,韩玉康,李文荣..运行20年以上500 kV 输电线路绝缘子运行及抽检分析[J].广东电力,2015,(5):103-108,6.
