电力电缆超负荷下温度场模型研究  

Research on Temperature Field Model of Power Cable under Overload

作　　者：甘星 GAN Xing(Hunan Yongzhou Electric Power Bureau, Yongzhou 425000, China)

机构地区：[1]湖南省永州市电业局

出　　处：《电工技术》2019年第17期20-21,25,共3页Electric Engineering

摘　　要：以某城市电网中的实际电缆为研究对象,阐述电力电缆的损耗计算模型和传热控制方程,在COMSOL中建立电缆温度场仿真模型,计算电缆在稳态运行时350A、623A负载下的温度场分布规律,得到不同负载下的电缆温度分布数据,为电缆的运维、在线监测等提供数据支撑与技术参考。The actual cable in a city power grid is considered as the research object. Firstly, the loss calculation model and heat transfer control equation of the power cable are expounded. The temperature field simulation model of the cable is created in COMSOL. The temperature field distribution law of the cable under 350 A and 623 A loads is computed. The temperature distribution data of the cable under different loads are obtained, which is the operative dimension of the cable. The difficulties in nursing and on-line monitoring provide data support and technical reference.

关 键 词：电缆 电缆沟 传热 损耗 温度分布 

分 类 号：TM751[电气工程—电力系统及自动化]