Time-scale-based Analysis of Off-site and On-site Albedo of A Photovoltaic Power Plant

With the vigorous development of clean energy, photovoltaic (PV) power generation accounts for an increasing proportion of total power generation. The efficiency of photovoltaic power generation is closely related to the albedo of the photovoltaic power plant. In order to improve the efficiency of power generation, it is necessary to deeply analyze the ratio of irradiance received by PV panels and their losses. The data in this paper come from the albedo of a PV power station in Gansu Province, and the analysis shows that the albedo of the station is always higher than the albedo of the station due to the different vegetation cover on the surface of the station, and then the trend of the albedo over time is analyzed in different time scales, and it can be found that the albedo is lower when the irradiance is higher, for example, the noon of a day and the summer of a year; and the albedo is higher when the irradiance is lower, for example, the early morning of a day and the winter of a year. early morning of a day and winter of a year.