摘要
分析了 XL PE电力电缆介质水树枝劣化的机理 ,在Maxwell极化应力理论的基础上建立了水树力学模型 ,应用电场有限元数值计算方法分析 XL PE介质因局部电场畸变导致的劣化过程并通过试验证明 :XL PE介质在电场作用下内部水分凝结、热膨胀及介质电致伸缩等导致介质疲劳断裂形成微观裂纹而引发水树枝 ;
Water Tree degradation in XLPE dielectric is an earlier period aging phenomenon during operation of XLPE power cable. A dynamic model of water tree with its electric field numerical calculation is proposed in this paper to describe and analyze the mechanism of water tree caused in XLPE power cable dielectric.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2002年第2期8-9,12,共3页
High Voltage Engineering
