1. School of Electrical Engineering and Automation, Fuzhou University, Fuzhou 350108; 2. Fujian Electric Power Survey and Design Institute Co., Ltd, Fuzhou 350003
Abstract：In view of the accident that Zhangquan EHV transmission lines are hit by “Moranti” typhoon, analyze the correlation between tower collapse accident and wind field distortion after typhoon passing through the ridge. The actual ridge terrain of the inverted tower is extracted. Take the wind speed of typhoon near the ground meteorological monitoring point as the input wind speed, and calculate wind speed at the tower by Fluent. According to the Shiyuan spectrum, the wind speed time history is simulated and load it on the finite element tower model to get the wind vibration coefficient and the stress ratio of the tower. The results show that the acceleration ratio of wind speed at 10m height on the top of the ridge is about 1.56; the wind vibration coefficient weighted value of the tower top tower increases by 16.1% compared with that of the normal terrain wind field; the largest stress ratio of each member of the tower head is at the bottle mouth, and the largest stress ratio of each member of the tower body is at the tower leg, which is consistent with the actual tower collapse.
赵云龙, 翁兰溪, 黄文超, 黄宴委. 基于山脊地形台风风场的铁塔风振系数研究[J]. 电气技术, 2021, 22(3): 38-43.
ZHAO Yunlong1, WENG Lanxi2, HUANG Wenchao1, HUANG Yanwei1. Research on wind-vibration coefficient of iron tower based on typhoon wind field of ridge terrain. Electrical Engineering, 2021, 22(3): 38-43.
2021, Vol. 22 
