架空输电线路非平稳台风风场数值模拟与验证  

Numerical Simulation and Verification of Unsteady Typhoon Wind Fields on Overhead Transmission Lines

作　　者：汪峰[1,2] 王鑫 刘章军 黄金山 WANG Feng;WANG Xin;LIU Zhang-jun;HUANG Jin-shan(Hubei Key Laboratory of Disaster Prevention and Mitigation,China Three Gorges University,Yichang 443002,China;School of Civil Engineering and Architecture,China Three Gorges University,Yichang 443002,China;School of Civil Engineering and Architecture,Wuhan University of Engineering,Wuhan 430074,China)

机构地区：[1]三峡大学防灾减灾湖北省重点实验室,宜昌443002 [2]三峡大学土木与建筑学院,宜昌443002 [3]武汉工程大学土木工程与建筑学院,武汉430074

出　　处：《科学技术与工程》2024年第13期5406-5414,共9页Science Technology and Engineering

基　　金：国家自然科学基金(51978543)。

摘　　要：为了实现架空输电线路非平稳台风风场模拟,考虑非平稳脉动风场的紊流强度和阵风因子特性及其影响,提出了一种架空输电线路非平稳台风风场的模拟方法。首先利用Spline插值方法生成时变平均风速,采用更新时变平均风速的谐波合成法模拟脉动风速,然后基于三向风谱功率密度函数,构建了台风风场的时变功率谱,计入风场空间上的相关性,获取了调制进化功率谱,并与模拟台风功率谱比较;最后以沿海500 kV架空输电线路为例,验证了台风模拟方法的合理性。研究结果表明:随着基本时距的增加,台风的非平稳因素所占比重越大;所提出的输电线路非平稳台风模拟方法合理有效。In order to simulate the non-stationary typhoon wind field of overhead transmission lines,a simulation method for the non-stationary typhoon wind field of overhead transmission lines was proposed,taking into account the turbulence intensity and gust factor characteristics and their effects of the non-stationary pulsating wind field.Firstly,the Spline interpolation method was used to generate time-varying average wind speed,and the harmonic synthesis method of updating time-varying average wind speed was used to simulate fluctuating wind speed.Then,based on the three-dimensional wind spectrum power density function,the time-varying power spectrum of the typhoon wind field was constructed,taking into account the spatial correlation of the wind field,and the modulation evolution power spectrum was obtained,which is compared with the simulated typhoon power spectrum.Finally,taking the coastal 500 kV overhead transmission line as an example,the rationality of the typhoon simulation method was verified.The research results indicate that as the basic time interval increases,the proportion of non-stationary factors in typhoons increases.The non-stationary typhoon simulation method proposed can achieve the simulation of non-stationary typhoon wind fields on transmission lines.

关 键 词：输电线路 台风模拟 非平稳 进化谱 

分 类 号：TM751[电气工程—电力系统及自动化]