地下直埋电缆温度场和载流量的数值计算

1.西安交通大学,西安,710049

2.西安交通大学,西安,710049

3.西安交通大学,西安,710049

4.西安交通大学,西安,710049;河北科技大学,石家庄,050054

5.西安交通大学,西安,710049

6.郑州电业局,郑州,450006

Numerical Computation of Temperature Field and Ampacity of Underground Cables

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利用有限元法计算了地下电缆的温度场分布,计算区域采用三角形单元剖分法.电缆的载流量采用二分法进行迭代求解.文中给出了三根单芯电缆的温度场分布图,并得到载流量和埋深的关系.

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