期刊论文

Simulation calculation of thermal stress distribution of composite interface in operation of high voltage cable joint under electro-thermal coupling

Liang, Zhen

中文

电机与控制学报

1007-449X

2020

24

10

100-108

10.15938/j.emc.2020.10.011

国家自然科学基金青年基金项目(51407013) 广东电网有限责任公司珠海供电局2017年重点资助项目(GDKJXM20161905)。

本校为第一机构

目前,对于高压电缆接头故障机理的研究主要集中在电场、温度场及初始机械应力分布计算方面,少有考虑运行中复合材料界面应力分布的畸变问题。高压电缆接头的故障发生涉及到电磁-热-应力场相互耦合的复杂过程,复合材料界面应力分布的畸变,不仅会加速绝缘材料的老化进程,还会降低界面沿面放电电压。本文以220 kV高压电缆中间接头为原型,运用了有限元分析软件,建立了高压电缆接头的电磁-热-应力耦合仿真模型,基于该模型得到了电缆接头正常运行工况、绝缘材料含有杂质缺陷的工况下电场、温度场和热应力分布的计算结果,着重对典型缺陷下复合材料界面热应力分布的二次畸变情况进行了分析。结果表明:电...

At present, the research on the failure mechanism of high-voltage cable joints mainly focuses on calculation of electric field, temperature field and initial mechanical stress distribution, and rarely considers the distortion problem of the interface stress distribution of composite materials during operation. The faulty development of high-voltage cable joints involves a complex process in which the electromagnetic-thermal-stress fields are coupled to each other. The distortion of the stress distribution at the interface of the composite mater...