吕洪坤,汪明军,方昕,韩高岩,蔡洁聪
LYU Hongkun,WANG Mingjun,FANG Xin,HAN Gaoyan,CAI Jiecong

• 1:国网浙江省电力有限公司电力科学研究院
• 2:杭州意能电力技术有限公司

摘要(Abstract)：

为了提高数值解的准确性,将土壤物性随温度的变化考虑到110 kV覆土电缆的温度场仿真中,考察多种铺设方式下电缆温度变化的规律。结果表明,降低填埋深度和增大电缆间距都能有效降低电缆中心温度。同时,采用高导热回填土和布置冷却水管也能大幅度改善电缆的散热,其中,相比于在电缆正上方布置,冷却水管布置在电缆下方的散热效果更佳。
In present study, the temperature field of 110 kV electric cable buried in multilayered solid was analyzed through infinite element method. In order to improve the accuracy of numerical result, the variation in thermal conductivity of soil as a function of temperature was investigated. Results shows both decreasing the burial depth and increasing the cable space can lower the core temperature of electric cable. In addition,thermal backfill and cooling water pipe adopted in numerical study was found feasible in heat dissipation enhancement. Specifically, the cooling water pipe arranged below electric cable revealed a better performance than that above electric cable.

关键词(KeyWords)： 导热系数;载流量;有限元;电缆
thermal conductivity;carrying capacity;infinite element;electric cable

Abstract:

Keywords:

基金项目(Foundation): 国网浙江省电力有限公司科技项目(5211DS17002N)

作者(Author): 吕洪坤,汪明军,方昕,韩高岩,蔡洁聪
LYU Hongkun,WANG Mingjun,FANG Xin,HAN Gaoyan,CAI Jiecong

DOI: 10.19585/j.zjdl.201901011

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