中国电机工程学报2016，Vol.36Issue(24)：6727-6735,9.DOI:10.13334/j.0258-8013.pcsee.161816
SF6中环氧树脂纳秒脉冲沿面闪络实验研究
Experiment Study of Surface Flashover on Epoxy Resin Discharged by Nanosecond Pulses in SF6
摘要
Abstract
Surface flashover and aging experiments driven by nanosecond pulses were conducted on epoxy resin (EP) materials which have been widely applied in gas insulated switchgears (GIS) for making disc insulators. A novel experimental setup for surface flashover experiments under different gas pressure was developed, and flashover characteristics of EP driven by nanosecond pulses were studied in SF6. Then the surface morphology and elemental composition of the material before and after aging treatment were measured, and the changes of physical and chemical properties of EP in the aging process were analyzed. The results show that, with the increment of SF6 pressure, the flashover voltage of EP increased. In the process of flashover aging, the alumina particles were gradually exposed on the EP surface. As the aging time increased, the organic fluoride, which was produced by the reaction between the polymer on the material surface and the fluorine-containing substances generated by discharge, was sputtered out by the electrical arc and subsequently covered on the material surface. However, there was no obvious change to the properties of alumina particle fillers in the aging process. This research is of significance to those seeking to modify the EP material appliedin GIS, and can also provide some reference to improve the insulating performance and the aging resistance of EP materials.关键词
环氧树脂/沿面闪络/纳秒脉冲/气体绝缘组合电器(GIS)/表面特性Key words
epoxy resins/surface flashover/nanosecond pulses/gas insulated switchgear (GIS)/surface properties分类
信息技术与安全科学引用本文复制引用
谢庆,刘熊,吴高林,王谦,黄河,邵涛..SF6中环氧树脂纳秒脉冲沿面闪络实验研究[J].中国电机工程学报,2016,36(24):6727-6735,9.基金项目
国家自然科学基金项目(11575194)；国家重点基础研究发展计划项目(973项目)(2014CB239505-3)；河北省自然科学基金(E2015502081)；中央高校基本科研业务费专项资金资助(2016ZZD07)；新能源电力系统国家重点实验室开放课题(LAPS16009)。 Project supported by National Natural Science Foundation of China (11575194) （11575194）
The National Basic Research Program (973 Program)(2014CB239505-3) （973 Program）
Natural Science Foundation of Hebei Province (E2015502081) （E2015502081）
The Fundamental Research Funds for the Central Universities (2016ZZD07) （2016ZZD07）
State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (LAPS16009) （LAPS16009）
