脉动风空间相关性对柔性支撑光伏阵列的影响  

INFLUENCE OF FLUCTUATING WIND SPATIAL CORRELATION ON FLEXIBLE SUPPORT PV ARRAYS

作　　者：郭涛[1] 杨渊茗 叶镇镇 寇甲超 李建 Guo Tao;Yang Yuanming;Ye Zhenzhen;Kou Jiachao;Li Jian(Faculty of Civil Engineering and Mechanics,Kunming University of Science and Technology,Kunming 650500,China;Yulin Hengshen New Materials Co.,Yulin 719000,China)

机构地区：[1]昆明理工大学建筑工程学院,昆明650500 [2]榆林恒神新材料有限公司,榆林719000

出　　处：《太阳能》2025年第4期76-83,共8页Solar Energy

摘　　要：为深入探讨脉动风空间相关性对柔性支撑体系下大跨度光伏阵列风振响应的影响,以某采用柔性支撑体系的大跨度光伏发电项目为研究对象,通过建立光伏阵列模型,分别对点风源风场与考虑脉动风顺风向空间相关性风场下光伏阵列的风振响应进行了分析,从而获得光伏阵列的位移-时程响应及风振系数。研究结果表明:1)在柔性支撑体系下,光伏阵列呈现较为均匀的刚度分布,振幅约为14 cm,振动相对稳定,建议位移风振系数采用1.9。2)与点风源风场下的情况相比,考虑脉动风顺风向空间相关性的风场下,光伏阵列的位移-时程响应出现相位差,导致大跨度结构不同位置的振动特性略有差异,但对其振幅、风振系数等安全指标的影响微乎其微。在大跨度结构的安全性研究方面,可采用点风源风场以简化工作量,不会影响大跨度结构的安全性分析;但若需要详细研究大跨度结构中具体点位的振动形式,还需要综合考虑脉动风空间相关性的影响。This paper aims to explore in depth the influence of spatial correlation of fluctuating wind on the wind induced vibration response of large-span PV arrays under flexible support systems.Taking a large-span PV power generation project using a flexible support system as the research object,a PV array model is established to analyze the wind induced vibration response of the PV array under the point wind source wind field and the wind field considering the spatial correlation with fluctuating wind direction.The displacement-time history response and wind induced vibration coefficient of the PV array are obtained.The research results show that:1)Under a flexible support system,the PV array exhibits a certain uniform stiffness distribution with an amplitude of about 14 cm,and the vibration is relatively stable.It is recommended to use a displacement wind induced vibration coefficient of 1.9.2)Compared with the case of point wind source wind field,in the wind field considering the spatial correlation with fluctuating wind direction,there is a phase difference in the displacement-time history response of the PV array,resulting in slight differences in the vibration characteristics at different positions of large-span structures,but the impact on safety indicators such as amplitude and wind induced vibration coefficient is negligible.In the safety research of large-span structures,point wind source wind fields can be used to simplify the workload without affecting the safety analysis of large-span structures.But if detailed research is needed on the vibration forms of specific points in large-span structures,it is necessary to comprehensively consider the influence of spatial correlation of fluctuating wind.

关 键 词：柔性支撑体系 光伏阵列 脉动风 大跨度结构 风振系数 相关性 

分 类 号：TM615[电气工程—电力系统及自动化] TB123[理学—工程力学]