不同材料绝缘子串在风荷载下的数值模拟
Numerical Simulation of Insulator Strings of Different Materials under Wind Load
丁顺利 1闵光云 2邵俊虎 3杨华平 3蔡萌琦 3周林抒4
作者信息
- 1. 成都大学机械工程学院,四川成都 610106;清华四川能源互联网研究院,四川成都 610299
- 2. 中山大学 中法核工程与技术学院,广东珠海 519082
- 3. 成都大学建筑与土木工程学院,四川 成都 610106
- 4. 国网四川综合能源服务有限公司,四川 成都 610031
- 折叠
摘要
利用ABAQUS有限元软件建立三档覆冰八分裂导线的数值模型,模拟研究输电线路在不同风荷载下的舞动.基于导线动力特性和舞动特征,分析玻璃、环氧树脂及陶瓷等不同材料绝缘子串对导线舞动的影响,获得特征线路段的舞动响应时程分析、频谱分析与轨迹分析.结合数值模拟结果,进一步对线路在不同风速的风荷载作用下的风偏响应进行时程分析,比较不同材料的绝缘子串对风偏起振现象的抑制效果.结果表明,绝缘子串材料的不同对导线舞动影响较小,对导线风偏幅值起不到抑制效果,因此,在输电线路实际工程应用中,应结合工程造价和防舞性能等因素综合考量选择绝缘子串.
Abstract
The numerical model of third-span iced eight-bundle conductor is established by using ABAQUS finite element software to simulate the galloping of transmission line under different wind loads.Based on the dynamic characteristics and galloping characteristics of conductor,the influence of insulator strings made of glass,epoxy resin and ceramics on conductor galloping is analyzed,and the galloping re-sponse time history analysis,spectrum analysis and trajectory analysis of characteristic line section are ob-tained.Combined with the numerical simulation results,the time history analysis of the wind deflection re-sponse of the line under the wind load of different wind velocities is further carried out,and the suppres-sion effects of insulator strings of different materials on the wind deflection are compared.The results indi-cate that the different materials of insulator strings have little impact on conductor galloping and has no in-hibitory effect on the amplitude of wind deviation.Therefore,in practical engineering applications of trans-mission lines,the selection of insulator strings should be comprehensively considered based on factors such as engineering cost and anti-galloping performance.
关键词
绝缘子串/不同材料/风荷载/舞动/数值模拟Key words
insulator string/different materials/wind load/galloping/numerical simulation引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据