Device and method for determining at least one component of hemispherical irradiance of solar radiation in an arbitrary plane

Abstract

The invention relates to a method (S100, S200, S300, S400, S500) for determining at least one component of a hemispherical irradiance (120) of solar radiation in an arbitrary plane, wherein the at least one component has a diffuse irradiance (122) and / or a direct irradiance (124), comprising the following steps: (i) collecting measurement data relating to the hemispherical irradiance (120) using a radiation sensor unit (12) in a field of view (26) over a plane (46) of the radiation sensor unit (12); (ii) capturing an image (110) of the sky (50) using a camera (14) in a field of vision (32) over a plane (48) of the camera (14); (iii) extracting (S130, S230, S330, S430, S530) features from the image (110) of the sky (50) by means of a first machine learning model and producing a result data set; (iv) merging (S140, S240, S340, S440, S540) the measurement data to form a common data set; (v) determining (S150, S250, S350, S450, S550) the at least one component of the hemispherical irradiance (120) in the arbitrary plane from the data set by means of a second machine learning model.

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