Power optimizer and power missing value filling method and device thereof

The invention discloses a power optimizer and a power missing value filling method and device thereof. The method comprises the following steps: acquiring historical irradiation data and historical power data; performing curve fitting based on the historical irradiation data and the historical power data, and determining a power fitting function; obtaining a power missing target point of the power optimizer and actually measured irradiation data of the power missing target point; and determining a power filling value of the power missing target point according to the power fitting function and the actually measured irradiation data, and filling power data of the power missing target point according to the power filling value. According to the method, the fitting function of the power and the irradiation is established, the power filling value is calculated according to the irradiation data, the power missing data is effectively filled, and the integrity and the accuracy of the power data are improved. 本发明公开了一