双面光伏组件背面无遮挡时的发电量研究

RESEARCH ON POWER GENERATION WITH UNSHIELDED BACK OF BIFACIAL PV MODULES

针对以常规方式安装双面光伏组件时组件背面存在一定遮挡会影响其发电量这一情况,通过对双面光伏组件分别安装于固定式光伏支架、平单轴跟踪光伏支架时组件背面有、无遮挡,以及背景反射率不同时双面光伏组件的发电量情况进行分析,结果发现,在双面光伏组件背面无遮挡的前提下,当采用平单轴跟踪光伏支架且地面背景为白色时,双面光伏组件的发电量增益明显。该研究可为地面光伏电站、农光互补光伏电站及分布式光伏电站中双面光伏组件的安装方式提供理论支持。

In view of the situation that there will be a certain shielding on the back of the bifacial PV module when installed in conventional way,which affects the power generation of PV module,by installing the bifacial PV module on a fixed PV bracket,whether there is any back side of the PV bracket when the shading and background reflectivity are different,the power generation of the bifacial PV module is analyzed,and it is found that,on the premise that the back of PV module is unshielded,when the bifacial PV module uses a horizontal single-axis tracking PV bracket and the ground background is white,the power generation gain of the PV module is obvious.It can provide theoretical support for the installation methods of bifacial PV modules in ground power stations,agricultural complementary power stations and distributed power stations.