在光伏发电中，积雪覆盖对于辐照度的影响非常显著，直接影响到光伏方阵的发电量。通过设计针对性的测试方案，开展了户外实证测试，研究了积雪厚度对光伏方阵平面接收辐照度的影响，并分析了影响光伏方阵表面积雪融化速度的因素。结果表明：光伏方阵辐照度的损失随其表面积雪厚度的增加而急剧增加，方阵表面积雪的融化速度主要受光伏组件的结构和功率密度的影响；在北方特别是冬季降雪量较大或降雪频次较高的地区，需要根据当地气候条件在组件选型时加以考虑，或采取适当的减少积雪覆盖时间的措施，以减少发电量损失，提高发电收益。

In photovoltaic (PV) power generation, the influence of snow covering on irradiance is very significant, and it directly affects the power generation of the photovoltaic arrays. By designing a targeted test plan, an outdoor empirical test was carried out to study the influence of snow thickness on the receiving irradiance of the PV array plane, and the factors affecting the snow melting rate on the PV array surface were analyzed. The results show that the loss of irradiance of PV array increased sharply with the increase of snow thickness. The snow melting rate on the PV array surface was mainly affected by the structure and power density of the PV modules. In the north, especially in areas with heavy snowfall or high snowfall in winter, it is necessary to consider the selection of PV modules according to local climatic conditions, or take appropriate measures to reduce snow covering time in order to reduce power generation loss and increase power generation revenue.