摘要
利用ABAQUS/CAE建立了220kV架空高压输电线特征段线路有限元模型,模型中包括子导线、绝缘子串和间隔棒等,并采用考虑随高度变化的Kaimal谱和Davenport相干函数,运用谐波合成法数值模拟风场,进而采用ABAQUS软件完成该特征段线路的风偏响应时程分析。将计算得到的在不同基本风速随机风荷载作用下的风偏响应统计结果,与现行设计规程中悬垂绝缘子串风偏角简化方法的计算结果进行比较,讨论了现行架空高压输电线路杆塔塔头设计时风偏角计算方法的不足。
Finite element model of a typical 220kV high voltage overhead transmission line section,consisting of twin bundle conductors,insulator strings and spacers,is set up by means of ABAQUS/CAE software.Based on the Kaimal spectrum of wind speed fluctuation,the variation of wind speed with height above ground is taken into account,and the Davenport coherence function,the fluctuating wind field along the typical transmission line section is simulated by means of WAWS.The statistical results of windage yaw of the typical line section under wind loads,and obtained from the time histories of windage yaw responses determined by ABAQUS software,are compared with those determined by the traditional method,then the shortage of the calculation method of windage yaw of suspension insulator string in the current design code is discussed.
出处
《应用力学学报》
CAS
CSCD
北大核心
2009年第1期120-124,215,共5页
Chinese Journal of Applied Mechanics
基金
中国电力工程顾问集团公司资助项目(编号:DG1-D01-2005)
关键词
架空高压输电线路
风偏角
有限元模拟
脉动风
high voltage overhead transmission line,windage yaw,finite element model,fluctuating wind
