同塔双回线路架空地线电能损耗影响因素分析  

Analysis on Affection Factor of Power Energy Loss of Overhead Ground Wire of Double Circuit Transmission Line on the Same Tower

作　　者：毛先胤[1] 徐晓刚[1] 陈锐民[1] 王锐[1] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080

出　　处：《广东电力》2013年第4期65-71,共7页Guangdong Electric Power

基　　金：广东电网公司重点科研项目(K-GD2011-432)

摘　　要：为降低架空地线电能损耗,用电磁暂态程序(the alternative transient program-electormagnetic transient pro-gram,ATP/EMTP)建立了输电线路架空地线感应电流计算模型,仿真分析了同塔双回输电线路的导线相序、线路电流、线路电流不平衡度、线路长度、档距、导地线的平均高度、导线相间距离和地线间距等因素对架空地线感应电流以及电能损耗的影响,得到:同塔双回输电线路同相序排列时,地线感应电流主要以地线-大地为环流回路,电能损耗最大;逆相序时,地线感应电流主要以地线-地线为环流回路,电能损耗最小等方面的结论。For reducing power energy loss of overhead ground wire, this paper establishes calculation model for induced cur- rent of overhead ground wire of transmission line by using the alternative transient program-electromagnetic transient pro- gram and carries out simulated analysis on affection on induced current and power energy loss of the overhead ground wire by factors including conductor phase sequence, current of the line, degree of unbalance of the current, length of the line, span, average height of the earth wire, phase spacing of the conductor and space between the ground wire. It draws a conclusion that when the double circuit transmission line arranges with the same phase sequence, the induced current of ground wire mainly takes ground wire-earth as circulation loop and the power energy loss is the largest at this time, while when arranges with inverse phase sequence, the induced current takes ground wire-ground wire as the circulation loop and the power energy loss is the lowest.

关 键 词：架空地线 感应电流 电能损耗 同塔双回线路 

分 类 号：TM726.3[电气工程—电力系统及自动化]