文件编号 Document No.：SP/WI-JS-010
5.4、INSTALLATION REQUIREMENTS FOR BIFACIAL CELLS MODULE 双面电池组件安装要求
Under the certain installation conditions, the backside of bifacial cells module will also generate electricity
power after receiving the reflected light, which will bring additional power generation gain to the power station
system.
双面电池组件在一定的安装条件下，背面接受到反射光后也会发电，会给电站系统带来额外的发电增益。
The shading on the module surface will affect the power generation much, the module should be installed in
the place where the module cannot be shadowed totally (such as the shadow from building, chimney and tree
etc.), and even the partially shading (such as the dirt, snow and aerial wire etc.) should be avoided.
组件应在整年完全不被（阴影）遮挡（例如，通过建筑、烟囱、树），即便部分（阴影）遮挡（例如，通过架
空线、污垢、雪、背面支架）也应避免。
The generation gain is related to the ground reflectivity, the module installation height to the ground, the array
spacing and the shadow shading to the module backside.
发电量增益和地面反射率、组件离地高度、阵列间距和背面阴影遮挡有关。
Generally speaking, the reflectance is various with the different ground (See table 5-3), and this will lead to
different power generation gain.
一般来说，不同的地面其反射率是不一样的，由此带来的组件发电增益也不同。如表5-3所示。
Table 5-3 reflectivity of different surfaces
表5-3 不同地面的反射率
Reflectivity range（%）
反射率范围
Due to the different ground clearance height will affect the power generation gain, it is recommended to install
the module at a height from 0.5m to 2m. See Fig. 5-2.
不同离地高度也会影响双面电池组件发电量的增益，一般建议安装高度为0.5m～2m比较合适。如图5-2所示。
Fig. 5-2 Distance from the earth
图5-2 双面电池组件安装离地
In the system design, besides the ground type and the module installation height to ground, the proper array
spacing and how to avoid shadow shading on the back need to be considered too, please consult with the
professional system designer.
在进行系统设计时，除了地面类型和离地高度以外，合适的阵列间距与如何避免背面阴影遮挡都需要考虑，请咨询
专业系统设计人员。
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