基于风洞试验的草原地貌太阳能光伏板抗风措施研究

Wind load study of solar photovoltaic panels in grassland terrain based on wind tunnel test

太阳能光伏板在草原地区的应用越来越广泛。目前,对光伏板的抗风研究大多数集中在平坦地面和屋顶环境下,而对草原地貌环境下光伏板风荷载分布的研究涉及较少。为此,通过风洞试验来探究不同来流风向角情况时,在无遮挡、植被遮挡和挡风墙3种工况下,太阳能光伏板的风压分布规律,结果表明:采用无遮挡和植被平均高度0.45 m遮挡工况时,虽然光伏板整体风压分布形式基本一致,但有植被遮挡板面的风压力有所减少,最大减少幅度可达30.85%;使用挡风墙时,光伏板表面的风压力下降幅度相对植被更加显著,最高可达34.6%,因此,设立挡风墙的遮挡效果明显优于植被。同时,引入干扰因子分析光伏板表面平均风压系数的干扰效应,获取草原地貌下太阳能光伏板风压分布数据,为合理设计光伏板阵列提供理论依据。

Solar photovoltaic panels are more and more widely used in grassland areas.At present,most of the research directions on wind resistance of photovoltaic panels focus on flat ground and roof environment,while the research on wind load distribution in grassland landform environment is less involved.Therefore,the wind tunnel test was conducted to explore the wind pressure distribution of solar photovoltaic panels under three working conditions that are no shelter,vegetation shelter and wind wall.The results show that although the overall wind pressure distribution pattern of photovoltaic panels is basically the same when the average height of vegetation is 0.45 m,the wind pressure of panels with vegetation is reduced to the maximum of 30.85%.When using a baffle wall,the wind pressure on the surface of photovoltaic panels decreased to 34.6%that is more significantly than that on vegetation.Therefore,the shielding effect of setting up a windwall is obviously better than that of vegetation.At the same time,the interference factor was introduced to analyze the interference effect of the average wind pressure coefficient of photovoltaic panel surface,and the wind pressure distribution data of solar photovoltaic panel under grassland landform was obtained,which provided a theoretical basis for the reasonable design of photovoltaic panel array.