直埋电力电缆载流量计算与影响因素分析  

Calculation and Analysis of Influencing Factors of Directly Buried Power Cable

作　　者：马莉莉[1] 杨波[1] 梁雄 MA Lili;YANG Bo;LIANG Xiong(Guangxi Electrical Polytechnic Institute,Nanning 530007,China;China Energy Engineering Group Guangxi Electric Power Design Institute Co.,Ltd.,Nanning 530007,China)

机构地区：[1]广西电力职业技术学院,广西南宁530007 [2]中国能源建设集团广西电力设计研究院有限公司,广西南宁530007

出　　处：《红水河》2022年第4期113-117,共5页Hongshui River

基　　金：2022年度广西高校中青年教师科研基础能力提升项目(2022KY1331)。

摘　　要：直埋电力电缆缆芯温度会直接限制电缆输送容量,为更充分地利用电缆的输送能力,应对电缆温度场和电缆载流量进行准确计算。首先,采用COMSOL有限元仿真软件搭建不同工况下直埋电力电缆温度场模型;然后,采用有限元法计算不同敷设环境和敷设方式下的电缆载流量,并通过试验对计算结果进行验证。结果表明,采用有限元仿真法可准确地计算直埋电力电缆的温度场和载流量,可应用于工程实际计算中。采用有限元法分析计算外部环境和电缆敷设方式等因素对电缆载流量的影响,为电缆实际敷设提供理论指导。The temperature of the cable core of the direct buried power cable will directly limit the transmission capacity of the cable.In order to make full use of the cable transmission capacity,the cable temperature field and cable ampacity should be accurately calculated.Firstly,COMSOL finite element simulation software is used to build the temperature field model of directly buried power cable under different working conditions;Then,the cable ampacity under different laying environments and laying methods is calculated by finite element method,and the calculation results are verified by experiments.The results show that the finite element simulation method can accurately calculate the temperature field and ampacity of directly buried power cables,and can be applied to practical engineering calculations.The finite element method is used to analyze and calculate the influence of external environment and cable laying mode on cable ampacity,so as to provide theoretical guidance for the actual cable laying.

关 键 词：直埋电力电缆 温度场 载流量 有限元法 影响因素 

分 类 号：TV247[水利工程]