基于ANSYS CFX的架空线路近温度场的研究  

Research on the Thermal Field around Overhead Line Based on ANSYS CFX

作　　者：李炀[1] 郝金宝 陈垣[1] 刘刚[1] 

机构地区：[1]华南理工大学,广东广州510641

出　　处：《电线电缆》2017年第3期35-38,43,共5页Wire & Cable

基　　金：国家高技术研究发展计划(863计划)(2015AA050201)

摘　　要：研究架空导线周围温度场的分布,有助于为温度监测设备的敷设和测温方式提供参考借鉴,有助于进一步研究导线粘连机理。使用有限元分析工具,以JL/G1A 300/40导体实际结构为例,将导体周围空气温度分布可视化呈现;结合仿真结果,在封闭室内对JL/G1A 300/40进行大电流实验,并分别测量上方、侧面、下方不同位置温度分布,实验结果显示,自然对流情况下,导体周围温度衰减强烈,导体上方温度在20 cm、侧面2 cm以及下方2 cm处可认为已是环境温度;采用接触式测温设备时,测温部位与导体接触方式将严重影响测量结果。The research on distribution of the temperature field around overhead transmission lines contributes to lay-ing and arrangement of temperature monitoring equipment and also provides for reference to line adhesion mechanism. We use the finite element analysis tools to present visually the temperature distribution of air around the conductor of JL/G1A 300/40. Combined with simulation results,we conduct the experiment in JL/G1A 300/40 in closed room and the temperature of top, side, bottom were measured in different locations. The results show that under natural convec-tion, the ambient temperature attenuate strongly. The temperatures at a positon 20 cm above conductor, at the side of 2 cm as well as 2 cm below conductor can be considered as the ambient temperature. Besides, If contact temperature measurement is used, the contact mode between temperature sensor and conductor surface will seriously afect the measurement results.

关 键 词：钢芯铝绞线 自然对流 近温度场 导线粘连 测温方式 

分 类 号：TM244.2[一般工业技术—材料科学与工程]