电力电缆热分布数值计算的应用研究

Application Research of Numerical Calculation for Power Cable Temperature Distribution

按照电力电缆的结构特点和运行热稳态特性 ,建立了三相电力电缆热分布的数值仿真模型 ,采用控制容积积分法对交联聚乙烯电缆内部热场进行计算 ,研究结果和所开发的计算仿真软件能够准确给出电缆截面的热分布图 。

A numerical simulated model for temperature distribution in 3-phase power cable is set up in this paper according to the structural parameters and thermal stable characters of cable in service. The internal thermal field of XLPE cable is calculated by using Controlling Volume Integral Method. The thermal thermograms of typical cross-section of cable can be drawn accurately with the use of the developed simulation software. The research results are useful for the design of insulation structural and diagnosis of thermal failure of XLPE cable.