Overhead transmission lines with damper means for preventing galloping oscillations

摘要

In combination with an overhead transmission line a vibration damper for preventing galloping of the line including one or more specifically determined eccentric weights mounted on the line at a position laterally spaced from the axis of the conductor in case of a single-conductor transmission line, or at a position laterally spaced from the vertical plane including the axis of each conductor or the vertical plane including the center line of conductors in case of a multi-conductor transmission line. The eccentric weight thus mounted provides moment of inertia at the particular point where it is mounted. When the single conductor or multi-conductor line moves upward and downward, the conductor is subjected to moment of rotation resulting from the specifically determined eccentric weight as well as to an aerodynamic force caused by a lateral wind acting thereon, whereby the amplitude of the galloping oscillation is effectively suppressed to a desired level in the whole span of the transmission line.