光伏阵列风荷载干扰效应风洞试验研究

风荷载是光伏板设计的主要荷载，对于大面积光伏阵列，其风致干扰效应明显，风荷载取值需要进一步研究明确。本文采用刚性模型测压风洞试验研究了光伏板体型系数干扰效应。通过改变倾角、风向角和光伏板的组数，研究了阵列中干扰效应对光伏板风荷载取值的影响。结果表明:当光伏板面迎风或者背风时，出现最大正压或负压；上游光伏板对下游光伏板存在明显的遮挡效应，倾角越大，遮挡效应越显著；上游光伏板三排以后，下游光伏板的风荷载趋于稳定。基于上述干扰效应给出了光伏阵列体型系数的取值建议并与规范取值进行了对比，为光伏阵列的抗风设计提供参考。

Wind tunnel experimental study on the wind load interference effect of solar panel arrays

Wind load is one of the main concerns in the design of the solar panel. The wind-induced interference effect is significant in the solar panel array, which needs further investigation. Pressures on the rigid solar panel models were measured in a wind tunnel to study the interference effect of solar panels on their pressure coefficients. By changing the inclination angle, wind direction and the number of solar panels, the interference effect on the wind load on the panels is studied. The results show that the most unfavorable wind load occurs when the panel is orientated to the wind. The upstream panels obviously shield the downstream ones and reduce their wind load. This shielding effect becomes more significant with the increase of the inclination angle. The wind load on the downstream panel tends to be constant when it locates downstream three or more panel rows. Based on the above interference effect, the pressure coefficients on the solar panel arrays are recommended and compared with those in standards, which provides a reference for the wind-resistant design of the solar panel supporting system.