摘要
冬季绝缘子上的覆雪会严重削弱其电气性能。通过测量雪的体积电导率寻找影响其导电性能的因素,并在矩形平板模型上模拟湿雪闪络过程。研究结果表明:覆雪水电导率及湿雪的液态水含量和密度与雪的体积电导率呈正相关关系;模型的湿雪闪络特性与雪体的体积电导率密切相关,且在临闪络前雪体内部有大量电弧产生。
Snow on insulators in winter would strongly weaken the electrical performance of insulators. The volume conductivity of snow was measured to find the influence factors of conductivity, and the flashover process of wet snow was simulated on the rectangle plate model. The results show that the volume conductivity of water applied for artificial snow, water content and density of wet snow show positive correlation with the conductivity of snow. The flashover characteristic of wet snow on the rectangle model is closely related to the volume conductivity of snow, and there is large amount of arc inside snow before flashover.
出处
《绝缘材料》
CAS
北大核心
2017年第11期38-43,共6页
Insulating Materials
基金
国网天津市电力公司科技项目(KJ16-1-01)
关键词
雪
体积电导率
矩形平板模型
闪络特性
电弧
snow
volume conductivity
rectangle plate model
flashover characteristic
arc
