摘要
采用双面光伏组件是一种能够有效提升光伏电站发电量的手段。基于双面光伏组件的特点,通过列举行业内常用的双面光伏组件辐照度数学模型,对影响双面光伏组件发电量的地面反射率、前后排光伏阵列间距、光伏组件最佳安装倾角和光伏组件离地高度这几个主要因素进行了研究,并通过PVsyst软件对这几个主要因素进行了逐一仿真验证,从实际应用角度提出了采用双面光伏组件的光伏电站在系统集成设计中应考虑的几个因素。研究结果表明:1)双面光伏组件的最佳安装倾角比单面光伏组件的最佳安装倾角大,根据地区、地面反射率的不同,二者的差值大致在2°~10°之间;2)提高光伏组件离地高度可以增加双面光伏组件的发电量,而发电量增益大小会因光伏组件所在地纬度的不同有所不同,实际光伏电站的系统集成设计中,可选择最具经济性的光伏组件离地高度;3)在光伏组件最佳安装倾角过低的地区,光伏组件的自遮挡效应严重,需要根据实际情况选择是否采用双面光伏组件。
Adopting bifacial PV modules is an effective way to increase the power generation capacity of PV power stations.Based on the characteristics of bifacial PV modules,this paper lists the commonly used mathematical models of bifacial PV modules irradiance in the industry,and studies the main factors affecting the power generation capacity of bifacial PV modules,such as the ground albedo,the spacing between the front and back PV array,the optimal installation tilt angle of PV modules,and the height above ground of PV modules,simulates and verifies these main factors one by one through PVsyst software,several factors that should be considered in the system integration design of PV power stations using bifacial PV modules are proposed from a practical application perspective.The research results show that:1)The optimal installation tilt angle of bifacial PV modules is larger than that of single sided PV modules,and the difference between the two is roughly between 2°~10°depending on the region and ground albedo.2)Increasing the height above ground of PV modules can increase the power generation capacity of bifacial PV modules,and the gain of power generation capacity will vary depending on the latitude of PV modules location.In actual system integration design of PV power station,the most economical height above ground of PV modules can be selected.3)In areas where the optimal installation tilt angle of PV modules is too low,the self occlusion effect is severe,and it is necessary to choose whether to use bifacial PV modules based on the actual situation.
作者
王忆麟
Wang Yilin(TBEA Xinjiang Sunoasis Co.,Ltd.,Xi’an 710119,China)
出处
《太阳能》
2023年第8期58-65,共8页
Solar Energy
