架空导线载流量计算方法的比较  

Comparison of Calculation Methods for Carrying Capacity of Overhead Conductors

作　　者：曾挺 朱文卫 房若季 ZENG Ting;ZHU Wen-wei;FANG Ruo-ji(Guangzhou Electric Power Co.Ltd.Shantou Power Supply Bureau,Guangzhou 515041,China;Guangzhou Tianxin Electric Power Engineering Testing Co.Ltd.,Guangzhou 510080,China)

机构地区：[1]广东电网有限责任公司汕头供电局,广州515041 [2]广东天信电力工程检测有限公司,广州510080

出　　处：《工程建设与设计》2024年第17期48-51,共4页Construction & Design for Engineering

摘　　要：以JL/LB20A-630/45型三层铝绞线为例,分析比较了Morgen公式及CIGRE标准导线载流量计算方法,并在不同风速风向、日照辐射及环境温度下对导线载流量进行计算。结果表明,CIGRE标准计算更为保守,但与Morgen公式计算结果差别不大,不同风速风向下最大差值仅为Morgen计算值的1.88%,不同日照辐射强度下最大差值仅为Morgen计算值的1.24%,不同环境温度下最大差值仅为Morgen计算值的1.56%,较为极端环境条件下最大差值仅为Morgen计算值的3.26%。因此,进行JL/LB20A-630/45型三层铝绞线载流量计算时,Morgen公式与CIGRE标准计算差异较小,在工程中仍可用更为简单的Morgen公式计算导线载流量。Taking JL/LB20A-630/45 three-layer aluminum stranded wire as an example,this paper analyzed and compared the Morgen formula and CIGRE standard calculation method of carrying capacity of wire,and calculated the carrying capacity of wire under different wind speed and direction,solar radiation and ambient temperature.The results show that CIGRE standard calculation is more conservative,but there is little difference with Morgen formula.The maximum difference under different wind speed and wind direction is only 1.88%of the calculated value by morgen,and the maximum difference under different solar radiation intensity is only 1.24%of the calculated value by Morgen.The maximum difference is only 1.56%of the calculated value by morgen at different ambient temperatures and 3.26%of the calculated value by morgen at more extreme ambient conditions.Therefore,when calculating the carrying capacity of JL/LB20A-630/45 three-layer aluminum conductor,Morgen formula has little difference with CIGRE standard calculation,and the simpler Morgen formula can still be used to calculate the carrying capacity of the conductor in engineering.

关 键 词：架空输电线路 动态增容 算法比较 

分 类 号：TM751[电气工程—电力系统及自动化]