Wind-Induced Vibration Response Analysis of Overhead Transmission Lines Under Icing Condition
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摘要: 为研究电力架空导线自然风作用下的振动响应特征以及其受覆冰、防振锤等因素的影响,以某地区典型大跨度输电导线为研究对象,基于随机过程理论的谐波叠加法建立了设定工况下的脉动风模型,并进一步获得了自然风荷载的数学模型。采用通用有限元软件ANSYS对导线进行动力响应分析,对比了在自阻尼情况下裸导线和覆冰导线的风振响应特征。最后,通过将防振锤简化为弹簧振子,对覆冰导线-防振锤体系进行动力响应模拟,验证了多点集中布置防振锤对于控制导线在顺风向与垂直风向的振动响应均有一定的效果。Abstract: To investigate the vibration response characteristics of overhead transmission lines and the influence of icing and anti-vibration dampers, a typical long-span conductor was taken as the research object. The fluctuating wind model was established with the harmonic superposition method based on the theory of stochastic process, and then, the functional expression of natural wind load was obtained. The dynamic analysis of conductors was carried out by the general finite element software ANSYS. In the self-damping condition, the wind-induced vibration responses of bare conductor and ice-covered conductor were analyzed and compared. Finally, by simplifying the anti-vibration dampers as a spring vibrator, the dynamic response simulation was conducted on the system of ice-covered conductors and anti-vibration dampers, the effect of the multi-point centrally arranged dampers in controlling the vibration response of conductors was verified in both downwind and veritical wind directions.
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Key words:
- transmission line /
- fluctuating wind /
- wind vibration /
- damper /
- dynamic response analysis
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[1] 张旺海. 覆冰架空导线振动数值仿真分析及实验研究[D]. 保定:华北电力大学, 2012. [2] 陈昌隆, 陈佳昊, 张晨晟, 等. 基于ANSYS的输电导线找形方法研究与分析[J]. 安徽建筑, 2018, 24(5):102-104. [3] 张旺海, 于建斌. 基于ANSYS的架空输电导线找形研究[J]. 电力建设, 2012, 33(2):32-35. [4] 张喆. 覆冰导线动态气动力特性研究[D].天津:天津理工大学, 2014. [5] 王璋奇, 赵星驰. 基于MATLAB/ANSYS的架空输电线脱冰仿真实验系统[J]. 实验技术与管理, 2019, 36(7):106-110. [6] 黄欲成, 汪峰, 刘鸿琳. 张力对大跨越输电导线Bate阻尼线防振影响研究[J]. 防灾减灾工程学报, 2019, 39(5):869-878. [7] 范昂. 高压输电塔线体系非线性振动特性分析[D]. 郑州:郑州大学, 2015. [8] 中华人民共和国住房和城乡建设部. 建筑结构荷载规范:GB 50009-2012[S]. 北京:中国建筑工业出版社, 2012. [9] 中华人民共和国国家经济贸易委员会. 110~500 kV架空送电线路设计技术规程:DL/T 5092-1999[S]. 北京:中国电力出版社, 1999.
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