基于电磁-热-流体耦合的隧道敷设电缆载流量分析  

Current Carrying Capacity Analysis of Cables Laid in Tunael Based on Electromagnetism-heat-fluid Coupling

作　　者：石大城 李乾 余志强 孙晓云[3,4] 张明志 白英杰[1] 郑海青 韩广 SHI Dacheng;LI Qian;YU Zhiqiang;SUN Xiaoyun;ZHANG Mingzhi;BAI Yingjie;ZHENG Haiqing;HAN Guang(CRSC Research&Design Institute Group Co.,Ltd.,Beijing 100070,China;State Grid Shijiazhuang Power Supply Company,Shijiazhuang 050000,China;School of Electrical and Electronic Engineering,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Hebei Provincial Collaborative Innovation Center of Transportation Power Grid Intelligent Integration Technology and Equipment,Shijiazhuang Tiedao University,Shijiazhuang 050043,China)

机构地区：[1]北京全路通信信号研究设计院集团有限公司,北京100070 [2]国网石家庄供电公司,河北石家庄050000 [3]石家庄铁道大学电气与电子工程学院,河北石家庄050043 [4]石家庄铁道大学河北省交通电力网智能融合技术与装备协同创新中心,河北石家庄050043

出　　处：《绝缘材料》2022年第12期111-118,共8页Insulating Materials

基　　金：国网河北省电力有限公司项目(kj2021-039);河北省自然科学基金面上项目(E2021210022);轨道交通电磁环境效应研究与测试平台建设项目(50200011800);河北省专项研发项目(SJMYF2022X13)。

摘　　要：为研究电缆隧道敷设下电缆载流量的影响因素,本文建立电磁-热-流多物理场耦合的三维仿真模型,通过仿真计算隧道内空气流速、电缆水平排列间距、流入隧道空气温度和隧道通风口长度对载流量的影响规律,得到各影响因素与载流量的关系曲线。根据工程实际数据设计正交试验研究4种因素对载流量的影响,获得其影响程度的权重关系。结果表明:4种因素影响程度由大到小为:隧道内空气流速、电缆水平排列间距、通风口长度、流入隧道空气温度,为实际电缆隧道敷设施工提供参考依据。In order to study the influencing factors of cable current carrying capacity under the laying of cable tunnels,a three-dimensional simulation model of electromagnetic-heat-current multi-physics coupling was established in this paper.The influence law of air velocity in the tunnel,horizontal arrangement distance of cables,air temperature into the tunnel,and length of tunnel vent on the current carrying capacity was obtained by simulation calculation,and the relationship curve between each influencing factor and current carrying capacity was obtained.The orthogonal test was designed to study the influence of four factors on the current carrying capacity based on the actual engineering data,and the weight relationship of the influence degree was obtained.The results show that the influence degrees of four factors from large to small are the air velocity in the tunnel,the horizontal arrangement distance of cable,the length of tunnel vent,and the air temperature into the tunnel,which provides reference for the laying construction of actual cable tunnel.

关 键 词：有限元法 多物理场耦合 载流量 电缆隧道 

分 类 号：TM247[一般工业技术—材料科学与工程] TM74[电气工程—电工理论与新技术]