1.引言在短路情况下,户外变电所架空软母线中会产生大的张力,因为短路电流增加了,使用了组合母线,并且最近还使用了铝合金管形母线,以获得必要的可靠性。短路电流的不断增加并且已接近组合母线的极限,所以越来越多的管形母线被使用于新建的、扩建的变电所内。在短路情况下,刚性的管形母线比软母线有着许多优点,如:拉力小并可忽略不计;最大机械载荷较小,并能很准确地测定;且比架空软母线更为雅致、紧凑,便于安排,因此管母线有着机械、电学、美观和经济等优点。但有一缺点:即容易引起风激振动,尤其是流经水域或平坦开阔地带的稳态风流。管母线受风诱发振动已由实验室和现场试验进行了理论性的研究。本文提供一个实际经 1. INTRODUCTION In the event of a short circuit, large strains occur in overhead bus bars in outdoor substations because of the increased short circuit current, the use of composite busbars, and the recent use of aluminum alloy tubular busbars to achieve the necessary reliability . Short-circuit current is increasing and is approaching the limit of the combined bus, so an increasing number of tubular busbars are being used in new, expanded substations. In the case of short-circuit, the rigid tubular bus has many advantages over the soft bus, such as: small and negligible tensile force; small maximum mechanical load and very accurate determination; and more elegant and compact than the overhead bus, Easy to arrange, so the tube bus has a mechanical, electrical, aesthetic and economic advantages. But there is one shortcoming: it is easy to cause wind-induced vibration, especially the steady-state wind flowing through the water or the flat open area. The wind induced vibration of the busbar has been theoretically studied by laboratory and field tests. This article provides a practical experience