架空输电线路允许载流量计算  

Calculation of Allowable Carrying Capacity for Overhead Transmission Lines

作　　者：黄俊杰 周学明 卢萍 胡丹晖 雷成华 HUANG Junjie;ZHOU Xueming;LU Ping;HU Danhui;LEI Chenghua(Electric Power Research Institute,State Grid Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430077,China;Key Laboratory of High-voltage Field-Test Technique of State Grid,Wuhan Hubei 430077,China;State Grid Hubei Electric Power Co.,Ltd.,Wuhan Hubei 430077,China)

机构地区：[1]国网湖北省电力有限公司电力科学研究院,湖北武汉430077 [2]国家电网有限公司高压电器设备现场实验技术重点实验室,湖北武汉430077 [3]国网湖北省电力有限公司,湖北武汉430077

出　　处：《湖北电力》2020年第5期29-33,共5页Hubei Electric Power

摘　　要：架空输电线路允许载流量可以采用查表法、Morgan公式法和IEEE推荐公式法来计算,这些方法计算过程繁简程度不同,需要考虑的因素不同,结果也不同。结合实际线路参数和环境信息,给出了3种方法的详细计算过程,比较了各种计算方法的优劣和适用场合。对于线路长期运行稳态允许载流量推荐采用Morgan公式法;IEEE推荐公式法可以计算线路动态允许载流量,在紧急情况下能充分发挥导线的载流潜力。The allowable current carrying capacity of overhead transmission lines can be calculated by use of the look-up table method,the Morgan formula method and the IEEE recommended formula method.The calculation results of these methods are different with different degree of complexity and different factors to be considered.Combining actual line parameters and environmental information,this paper presents the detailed calculation process of the three methods,and also compares the advantages and disadvantages of various calculation methods and applicable occasions.The Morgan formula method is recommended for the long-term steady-state allowable current-carrying capacity of the line;the IEEE recommended formula method can be used to calculate the dynamic allowable current-carrying capacity of the line,which can give full play to the current-carrying potential of the conductor in the case of emergency.

关 键 词：架空输电线路 允许载流量 Morgan公式 交流电阻 

分 类 号：TM744[电气工程—电力系统及自动化]