Studies on the Local Wind Resistance Design of Transmission Tower-conductor Systems

(3rd Report, Space-time Structure Analyses of the Local Wind Effected by Topography)

Abstract

Immediately after the Typhoon 9119 which caused severe damages in the transmission lines in western Japan, electric power utilities asked Central Research Institute of Electric Power Industry (CRIEPI) to carry out the studies on the local wind resistance design of transmission tower-conductor systems. To promote this study, CRIEPI organized a committee and three sub-committees (the Wind observation sub-committee, the Wind simulation sub-committee, and the Wind-resistance design sub-committee). This paper describes the investigation results by the Wind observation sub-committee, which conducted to observe the topographic effect to the local wind and to understand the space-time structure of the high wind.