大跨度柔性光伏阵列上下表面脉动风荷载三维空间相关性分析  

THREE-DIMENSIONAL SPATIAL CORRELATION ANALYSIS OF FLUCTUATING WIND LOADS ON UPPER AND LOWER SURFACES OF LARGE-SPAN FLEXIBLE PHOTOVOLTAIC ARRAYS

作　　者：王威[1] 柯世堂[1] 王立山 任贺贺 张春伟 田文鑫 Wang Wei;Ke Shitang;Wang Lishan;Ren Hehe;Zhang Chunwei;Tian Wenxin(Department of Civil and Airport Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211016,China;Jiangsu Medium Voltage Electrical Engineering Group Co.,Ltd.,Nanjing 210029,China;National Energy Group Science and Technology Research Institute Co.,Ltd.,Nanjing 210046,China)

机构地区：[1]南京航空航天大学土木与机场工程系,南京211106 [2]江苏中压电气工程集团有限公司,南京210029 [3]国家能源集团科学技术研究院有限公司,南京210046

出　　处：《太阳能学报》2025年第4期331-341,共11页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(52211530086);江苏省杰出青年科学基金(BK20211518);江苏省自然科学基金(BK20210309);南京航空航天大学研究生科研与实践创新计划(xcxjh20230726)。

摘　　要：以国电投江苏盐城柔性光伏示范基地三跨五排光伏阵列为研究对象,基于上下表面同步测压风洞试验对比分析脉动风荷载分布特性及三维空间相关性,建立柔性光伏表面相关性区域划分模型,揭示脉动风荷载在三维空间内的变化规律以及柔性光伏表面风力分量之间的耦合现象。研究表明:沿垂直竖向柔性光伏表面上缘区为弱相关区,下缘区为强相关区,水平跨向阵列干扰显著影响柔性光伏阵列组件块连接处脉动风压相关性,水平排向相关性光伏阵列第一排受排间干扰最为严重;整体阻力系数与表面脉动风压之间相关性区域在柔性光伏表面呈弱-强-弱分布,且表面阻力与横轴向弯矩之间存在显著耦合现象,其中阵列干扰增强耦合性区域为[0°,45°]和[150°,180°],减弱区域为[45°,150°]。Taking the three-span and five-row photovoltaic array of Guodian Investment Jiangsu Yancheng Flexible Photovoltaic Demonstration Base as the research object,the distribution characteristics and correlation of fluctuating wind loads in three-dimensional space were compared and analyzed based on wind tunnel tests,synchronously recording the pressure on the upper and lower surfaces.A regional division model for the correlation of flexible photovoltaic surfaces was established,revealing the variation of fluctuating wind loads in three-dimensional space and the coupling effects between the wind components on flexible photovoltaic surfaces.It is found that the upper edge of the flexible photovoltaic surface along the vertical direction is weakly correlated,while it become strongly correlated on the lower edge.The interference of horizontal cross array significantly affect the correlation of fluctuating wind pressure at the connection area of flexible photovoltaic array panels,and the first row of photovoltaic arrays is most severely affected by inter row interference;The correlation area between the overall resistance coefficient and surface fluctuating wind pressure shows a weak-strongweak distribution on the flexible photovoltaic surface,and there is a significant coupling effect between the surface resistance and the transverse bending moment.The array interference enhances the coupling area in[0°,45°]and[150°,180°],and weakens the area in[45°,150°].

关 键 词：光伏阵列 风洞 相关性理论 脉动风荷载 阵列干扰 

分 类 号：TU312.1[建筑科学—结构工程] TK81[动力工程及工程热物理—流体机械及工程]