地下电缆载流量评估影响因素数值分析Numeric Analysis of Influencing factors on Ampacity Evaluation of Underground Power Cables
方晓宝
FANG Xiao-bao(Zhejiang Electric Power Corporation
摘要(Abstract)：
利用有限元法对影响地下电缆温度场分布的地表空气温度、电缆埋地深度、土壤热阻系数、有无回填土、电缆排列方式、电缆接地方式等因素进行了分析,利用弦截法计算地下电缆群载流量,给出电缆载流量随各项参数变化的关系,为根据实际环境和敷设条件选择合适的电缆载流量提供依据。
Through the analysis of the factors influencing the temperature field distribution of underground power cables such as surface air temperature,cable buried depth,thermal resistance coefficient of soil,backfill,cable arrangement mode,cable grounding mode etc.by the finite element method(FEM),this paper calculates the ampacity of underground power cable groups by the secant method,shows that cable ampacity varies with different parameters and provides basis for the selection of appropriate ampacity according to actual environmental and installation conditions.
关键词(KeyWords)：
有限元;地下电缆群;载流量;影响因素
finite element method;underground power cable groups;ampacity;influencing factors
基金项目(Foundation):
作者(Author):
方晓宝
FANG Xiao-bao(Zhejiang Electric Power Corporation
DOI: 10.19585/j.zjdl.2011.06.003
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