Analysis of Displacement and Tension of Four-bundled Conductor for Estimating Vibration Modes by Tension

Abstract

Snow accretion and wind blowing on conductors causes short circuit and fatigue by galloping. To understand galloping by observation, estimating vibration modes by tension is effective. In this paper, the relationship between displacement and tension of four-bundled conductor is discussed by using measured value in excitation tests. In the case of vibration which have odd antinodes, natural frequencies of tension show good agreement with those of displacement. However, it doesn't apply to even antinodes. To estimate vibration modes correctly, considering magnitude of the tension fluctuation is necessary.