脉冲大电流应用电缆的设计  

Design of Cable Applied to Large Pulse Current

作　　者：冉慧娟[1] 耿召阳 赵伟康[2,3] 张金梁 王珏 严萍[2,4] RAN Hui-juan;GENG Zhao-yang;ZHAO Wei-kang;ZHANG Jin-liang;WANG Jue;YAN Ping(College of Electrical and Electronic Engineering,North China Electric Power University,Baoding 071003,China;Institute of Electrical Engineering,Chinese Academy of Sciences,Beijing 100190,China;College of Electronic,Electrical and Communication Engineering,University of Chinese Academy of Sciences,Beijing 100190,China;Key Laboratory of Power Electronics and Power Drive,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]华北电力大学电气与电子工程学院,保定071003 [2]中国科学院电工研究所,北京100190 [3]中国科学院大学电子电气与通信工程学院,北京100190 [4]中国科学院电力电子与电力驱动重点实验室,北京100190

出　　处：《科学技术与工程》2020年第3期1064-1070,共7页Science Technology and Engineering

基　　金：国家自然科学基金面上项目(51875546,51577178)。

摘　　要：为研究脉冲大电流应用所使用的电缆,优化设计其结构并选择绝缘层材料。首先针对同轴结构电缆,分析了半导电层对电缆绝缘层电场的影响。然后在绝热条件下,计算了不同导体截面积电缆的温度,并通过试验计算了硅橡胶和不同氟橡胶材料热导率随温度的变化规律。在对计算结果进行分析比较的基础上,确定选择内、外导体截面相同且没有半导电层的同轴电缆结构,以及F0-2706型氟橡胶材料作为绝缘层。最后,通过有限元Comsol软件仿真计算了氟橡胶绝缘电缆的温升,针对连续通过脉冲大电流时电缆温升过高的问题,提出了采用水冷方式降低电缆温升的方法。仿真结果表明:通过水冷方式降低电缆温升,冷却效果明显,可以在一定程度内满足工程应用需求。In order to study the cable applied to large pulse current,including the optimization of structure and the selection of insulating layer material.Firstly,to the coaxial structure cable,the effect of semi-conductive layer on electric field of insulation layer was analyzed.Then,the temperature of the cables with different conductor cross-sectional area was calculated under the condition of adiabatic.And the thermal conductivity of silicone rubber and different fluorine rubber materials with temperature was also calculated through the test calculation.On the basis of analysis and comparison of the calculation results,it was determined to select the coaxial structure cable with the same internal and external conductor cross section and no semi-conducting layer,and the F0-2706 type fluorine rubber material as insulating layer.At last,the temperature of fluorine rubber insulated cable was simulated by using the comsol software,which was based on the finite element method.Aiming at the problem that the temperature of cable is too high when continuous large pulse current passing,the method of using water cooling to reduce the temperature was proposed.The results show that the cooling effect is obvious and it can meet the demand of engineering application to a certain extent.

关 键 词：脉冲大电流 同轴电缆 绝缘材料 仿真计算 

分 类 号：TM835[电气工程—高电压与绝缘技术]