基于有限元分析的电缆中间接头电阻研究  

Study of Cable Intermediate Joint Resistance Based on Finite Element Analysis

作　　者：刘国建[1] 肖礼[1] 代宪亚 

机构地区：[1]上海电力学院自动化工程学院,上海200090

出　　处：《电力与能源》2016年第1期37-41,共5页Power & Energy

基　　金：上海市"科技创新行动计划"高新技术领域重点科研项目(14511101200)~~

摘　　要：针对10kV电力电缆中间接头运行时,电缆芯与连接管处的接触电阻在大电流作用下产生的热量是否为中间接头发生过热现象的最大诱因展开研究。利用有限元分析软件ANSYS对建立的中间接头连接管与电缆芯实体模型进行应力分析。在连接管外表施加冲压(强)后,得到连接管内部应力分布与形变图,读取接触处的仿真压强值,通过换算以及参考接触电阻的工程计算公式,计算出冲压操作产生的接触电阻大小。得出电缆中间接头处接触电阻远小于连接管位置本体电阻,不足以对电缆中间接头造成过热影响的结论,对进一步探究电缆中间接头发热机理具有一定的参考意义。This research focuses on whether the heat caused by the contact resistance in cable core and connec- tion pipe under the strong current is the biggest cause for overheat at the intermediate joint during the running process of 10kV cable intermediate joints. The finite element analysis software ANSYS is used to make the stress analysis of the established entity model which contains intermediate joint connection pipe and cable core location. After the force （or pressure） is applied on the surface of connecting tube, the internal stress distribu- tion and deformation map show up~ after reading the simulation pressure at the contact, through the conver- sion as well as the engineering calculation formula of the contact resistance, we can calculate the contact resist- ance caused by the stamping operation. It is calculated that the contact resistance of the intermediate ioint is much less than the body resistance in the connecting pipe position, not sufficient to cause intermediate joint o- verheating. This research can provide a certain reference value for further exploring the heating mechanism of cable intermediate joint.

关 键 词：电缆中间接头 有限元分析 应力分析 接触电阻 

分 类 号：TM726.4[电气工程—电力系统及自动化]