摘要
结合传热学知识对地下直埋电缆温度场进行分析,构造出热传导方程和边界条件后,采用专业有限元软件建立了3根直埋单芯电缆的温度场模型,计算区域采用三角形单元剖分法。对电缆温度场分布及载流量的确定采用对分法进行迭代求解。通过仿真,分析了影响土壤直埋电缆载流量的各个因素以及各因素对载流量的影响规律,为工程实际提供了参考依据。
Temperature distributions of buried cables are analyzed according to the knowledge of heat transfer. Heat conduction equation and boundary condition are established, and a model of three single core buried cables is built using the professional FEM software. The calculation region is divided with triangle format. The temperature field distributions and ampacities of the cables are calculated with bisection method. The factors effecting ampaeity of buried cable and the variation rule of ampaeity with each factor are analyzed via simulation.
出处
《高压电器》
CAS
CSCD
北大核心
2010年第2期42-45,51,共5页
High Voltage Apparatus
关键词
直埋电缆群
有限元法
温度场
载流量
仿真计算
buried cable system
finite element method
temperature field
ampacity
simulation
作者简介
张洪麟（1982-），男，硕士，从事电气设备在线监测及诊断技术的研究。
