草原地区的太阳能光伏板风荷载风洞试验研究

Wind Tunnel Test Study of Wind Load on Solar Photovoltaic Panels in Grassland Area

通过风洞试验对草原地区太阳能光伏板的风压分布规律进行研究,并对比了平坦地区的太阳能光伏板的风压分布情况,通过改变来流风向角研究光伏板表面平均风压系数、体型系数的干扰效应,然后与规范对比和引入干扰因子来探讨与分析光伏板在两种环境下的影响程度。结果表明,由于草原植被的影响,来流会在板面中下部形成停滞区域,其中局部风压系数高达1.4,有必要引入局部风压系数避免板面局部失稳;草原地区的光伏板相较于平坦地区整体风压系数呈缩小趋势,尤其是当风向角达到180°时达到极小值。

The wind pressure distribution law of solar photovoltaic panels in grassland area is studied by wind tunnel test,and the wind pressure distribution of solar photovoltaic panels in flat area is compared,and the interference effect of changing the incoming wind angle on the average wind pressure coefficient and body coefficient on the surface of photovoltaic panels.Then compare with norms and introduce disturbance factors to explore and analyze the degree of influence of PV panels in both environments.The results show that due to the influence of grassland vegetation,the incoming flow will form a stagnant area in the middle and lower part of the panel surface,where the local wind pressure coefficient is as high as1.4,and it is necessary to introduce local wind pressure coefficients to avoid local instability of the panel surface;the overall wind pressure coefficient of PV panels in grassland areas tends to decrease compared with that in flat areas,especially when the wind angle reaches 180°to reach a very small value.