Pages 1-
The structural design of transmission line requires wind information under severe wind load. However, wind data which has been observed only over short periods at a transmission line in high altitude mountainous terrain is not sufficient for determining design wind speed. We analyzed a correlation between wind records observed along a transmission line and its nearby observation points, for the purpose of utilizing long-term wind records at the surroundings points, such as Meteorological Observatories, effectively. Our results showed high correlations between wind at the transmission line and the nearby points in a certain range of wind speed and direction. In addition, it was found that WRF, one of the well-known meso-scale atmospheric models, reproduced wind distribution around the transmission lines brought about by Typhoon Usagi(0705) rather well. The winds measured at several transmission lines corresponded well to reproduced winds by model.
