Study on new cable material of resisting water treeing in polyethylene

被引：0

作者：

Dang, Zhi-Min ^{[1
]}

Kang, Jie ^{[1
]}

Tu, De-Min ^{[1
]}

机构：

[1] Dept. of Mat., Tsinghua Univ., Beijing 100084, China

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2002年 / 22卷 / 01期

关键词：

Chemical modification - Electric insulating materials - Polyethylenes;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Water treeing aging of plastic cables is mainly reason for the cable breakdown under moist environment. Polyethylene and cross-linked polyethylene was modified by a fit content of EAA and sorbital in this study. The rules of forming water treeing for samples were studied. The probability and length of water treeing increase with an increase of experimental voltage and time. The result shows that the samples modified can resist the forming of water treeing. A new kind of cable material would be prepared according to this result. The qualitative link between tanδ and the probability and length of water treeing was sound by the experimental of tanδ - V. Stronger water treeing, more tanδ. The tanδ might be a rule for determining water treeing of materials. And dielectric properties of samples containing water treeing might be recovered after transformer oil was injected into treeing sites under vacuum. Therefore water treeing can be inhibited by this method again.

引用

页码：8 / 11