平地输电线路脉动风模拟  

The Pulse Wind Simulation of Transmisson Line System Based on Improved Weighted Amplitude Wave Superposition

作　　者：林奇祥[1] 郭轶磊 胡文斌[2] 

机构地区：[1]三峡大学电气与新能源学院,湖北宜昌443002 [2]三峡大学梯级水电站运行与控制湖北省重点实验室,湖北宜昌443002

出　　处：《通信电源技术》2017年第5期26-28,共3页Telecom Power Technology

基　　金：输电铁塔结构可靠性的分枝约界法优化(三峡大学人才启动基金),项目编号:KJ2014B047

摘　　要：运用数理统计的方法对脉动风进行仿真模拟,这对输电塔线体系抗风设计非常重要。文中基于线路高差较小的假设,认为水平风谱沿水平方向是不变的,对互谱密度矩阵进行推导,避免了繁琐的Cholesky分解。采用Kaimal谱对输电塔线体系50 m高度进行脉动风模拟,得到风荷载谱和其中2个点的脉动风速时程曲线。该曲线反映了风速的变化过程,可以为以后的塔线体系抗风设计提供参考。It is very important to use the method of mathematical statistics to simulate the pulse wind for the wind resistant design of transmission line system. Based on the assumption that the line height is small and horizontal wind spectrum along the horizontal direction is unchanged,the spectral density matrix is derived,and the tedious Cholesky is avoided. Kaimal spectrum is used to simulate the 50 m height of transmission line system. Wind load spectrum and wind curve of two of the points that change with the time. The curve reflects the change of wind speed,which can provide reference for the wind resistant design of transmission line system.

关 键 词：脉动风 谐波合成法 仿真分析 风荷载谱 

分 类 号：TM75[电气工程—电力系统及自动化]