摘要
利用有限元计算了地下电缆的焦耳损耗和温度场分布,利用迭代法实现地下电缆温度场和电磁场间的耦合计算,提高了地下电缆温度场计算的精度,利用迭代法确定地下电缆的载流量。本文对地下直埋多芯电缆群的温度场进行了计算,并给出了相应的载流量。耦合计算结果比非耦合计算结果更接近试验结果,完全满足工程实际的需要。
Finite element method（FEM） is used to calculate the Joule losses and temperature of underground cables.Iteration method is used to solve the electro-thermal coupling problem and to improve the accuracy of the calculation.Iteration method is also used to calculate the ampacity of underground cables.The temperature of underground multi-core cables is calculated in this paper and the ampacity is given out.The result of electro-thermal coupling method is more close to experimental result than that of non coupling method.This method is effective for engineering use.
出处
《电工电能新技术》
CSCD
北大核心
2012年第2期27-30,共4页
Advanced Technology of Electrical Engineering and Energy
基金
河北省科技支撑计划资助项目(10213557)
关键词
热电耦合
有限单元法
温度场分布
载流量
electro-thermal coupling
finite element method
temperature distribution
ampacity
