中强度全铝合金导线在输电线路中的应用探讨

Research of the application of the medium strength all aluminum alloy conductor in the transmission lines

中强度全铝合金导线电阻损耗较低,在高负荷、高利用小时数、长距离输电的情况下,可以获得较好的节能效果。但同时该导线也存在综合拉断力偏小,覆冰工况下过载能力不足的问题。本文通过对各类中强度全铝合金导线与等截面钢芯铝绞线损耗特性、机械特性及弧垂特性的比较分析,结合云南线路的实际情况,对该类导线的应用给出了相应的意见。

MAAAC has low resistance loss, in the case of high load, high utilization hours and long distance transmission, better energy saving eff ect can be obtained. But at the same time, the wire also has the problem of small comprehensive pull breaking force and insuffi cient overloading capacity under icing condition. By comparing and analyzing the loss characteristics, mechanical properties and sagging characteristics of all kinds of medium strength all aluminum conductor and equal section steel reinforced aluminum conductor, combined with the actual situation of Yunnan transmission lines, the corresponding opinions and suggestions for the application of this kind of conductor.