Development of a Wind Spoiler Anti-Galloping Device for Bundle Conductors of UHV Overhead Transmission Lines

Bundle conductors of ultra-high voltage (UHV below) overhead transmission lines are often exposed to various wind-excited vibrations, which severely threaten the safety of overhead transmission lines and cause enormous losses of economy. Based on the flow destructing principle, a new wind spoiler anti-galloping device for UHV overhead transmission lines was studied in this paper. To perform such analysis, the arbitrary Lagrangian-Eulerian (ALE below) methods and vertical galloping mechanism were adopted for the simulation of wind spoiler. Then wind tunnel tests were presented to verify the effect of the wind spoiler chosen. Finally the layout plan of this new wind spoiler anti-galloping device was detailed and the efficiency assessment was carried out. From field tests and simulation calculations, the maximum amplitude of the conductors with wind spoiler anti-galloping devices decreased by about 30%.