基于AR法的输电塔线体系三维空间风振反应分析  

AR-based Analysis of Three-dimensional Wind-induced Response of Transmission Tower Line System

作　　者：张伟丽[1] 

机构地区：[1]山西水利职业技术学院,山西运城044000

出　　处：《杨凌职业技术学院学报》2014年第4期40-43,共4页Journal of Yangling Vocational & Technical College

摘　　要：基于某220kV羊角输电塔线体系,采用线性滤波法中的自回归(AR)模型,考虑结构节点间的风速时程相关性,利用MATLAB与VISUAL C++语言的混合编程技术,建立了输电塔线体系的三维空间分析模型,并对输电塔线体系的风振反应进行分析。计算结果表明:该方法具有良好的稳定性和计算效率。对于同风向下的单塔和塔线体系而言,塔线体系的风振响应较弱。通过对比分析单塔、塔线体系及两种规范的风振系数差异,说明采用规范计算风振系数值是偏于保守的。This paper is based on three-dimensional structure of 220kV transmission tower model and considered the structure of the wind speed time series between nodes associated with linear filtering method in the autoregressive （AR） model .Using MATLAB and VISUAL C ＋ ＋ mix-programming technique ,a wind speed time-history simulation program of high-voltage transmission tower of three-dimensional structure is developed ,and its accuracy and effectiveness have been demonstrated through an example .The calculation results show that ：the method has good stability and calculation efficiency .For double tower and tower line system under same wind ,the wind vibration response of the tower line system is weak .In addition ,this paper compared and analyzed the wind-induced vibration coefficient of single tower ,tower line system and two specifications . That wind vibration coefficient is obtained by using the standard value is rather conservative .

关 键 词：AR模型 风速模拟 时程分析 风振系数 

分 类 号：TM753[电气工程—电力系统及自动化]