南方电网技术2018，Vol.12Issue(1)：41-47,7.DOI:10.13648/j.cnki.issn1674-0629.2018.01.007
考虑降雨的埋地电缆动态负载能力预测
Dynamic Load Capacity Forecast of Buried Cable Considering Rainfall
摘要
Abstract
The load capacity of the operating cable is mainly affected by the thermal parameters of surrounding soil, such as thermal resistance coefficient,specific heat capacity,and ambient temperature. However,at present,little research has been done on the ther-mal characteristics of the soil around cables,and the influence of rainfall is seldom considered. Guangzhou Wushan area is taken as a typical representative, its soil temperature, thermal resistance coefficient and specific heat capacity are measured, and the effects of rainfall on soil thermal parameters are studied. Based on the dynamic load capacity forecasting model of transmission cable and the cor-relational studies of soil thermal parameters,the emergency load capacity of cables in different initial conditions is calculated. Finally, the influence of rainfall and its duration on the emergency load capacity of cables is analyzed. The research results can provide a refer-ence to the studies of short-term emergency load capacity of cable and cable heating during short-circuit fault.关键词
埋地电缆/负载能力/预测/降雨/土壤热特性Key words
buried cable/load capacity/prediction/rainfall/soil thermal characteristics分类
信息技术与安全科学引用本文复制引用
牛海清,余佳,郭少锋,许佳,王劲,王红斌,雷超平..考虑降雨的埋地电缆动态负载能力预测[J].南方电网技术,2018,12(1):41-47,7.基金项目
国家高技术研究发展计划(863计划)项目(SS2015AA050201).Supported by the National High Technology Research and Development Program of China(863 Program)(SS2015AA050201). （863计划）
