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一、概述目前在我国,随着输变电网趋于超高压,短路电流增大,越来越多的500千伏户外变电站(升压站)采用合金铝管作母线,这种结构型式有许多优点,如:最为显著的是载流量大,其次较之软母线具有施工、使用、维护、经济和美观等优点.但是,有一缺点,即当稳态连续风流通过与流速方向垂直的管形母线时,其风下侧气流变紊乱,形成“卡门涡旋”,产生了周期干扰力,当干拢力频率与
I. Overview At present in our country, as the transmission network tends to be over-voltage and short-circuit current increase, more and more 500-kilovolt outdoor substations (booster stations) use alloy aluminum tubes as busbars. This type of structure has There are many advantages, such as: the most significant is the carrying capacity, and secondly compared with the soft bus has the construction, use, maintenance, economy and aesthetics, etc. However, there is a disadvantage that when the steady state continuous flow through with the flow direction perpendicular to the tube Bus, the air flow under the wind side becomes turmoil, the formation of “Karman vortex”, resulting in a periodic disturbance, when the frequency of dry-up force and