Omnivision forecasting: combining satellite observations with sky images for improved intra-hour solar energy predictions
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Abstract (arXiv)
Integration of intermittent renewable energy sources into electric grids in large proportions is challenging. A well-established approach aimed at addressing this difficulty involves the anticipation of the upcoming energy supply variability to adapt the response of the grid. In solar energy, short-term changes in electricity production caused by occluding clouds can be predicted at different time scales from all-sky cameras (up to 30-min ahead) and satellite observations (up to 6h ahead). In this study, we integrate these two complementary points of view on the cloud cover in a single machine learning framework to improve intra-hour (up to 60-min ahead) irradiance forecasting. Both deterministic and probabilistic predictions are evaluated in different weather conditions (clear-sky, cloudy, overcast) and with different input configurations (sky images, satellite observations and/or past irradiance values). Our results show that the hybrid model benefits predictions in clear-sky conditions and improves longer-term forecasting. This study lays the groundwork for future novel approaches of combining sky images and satellite observations in a single learning framework to advance solar nowcasting.
Key facts. Cited by 1 paper in the map (data through 7 Oct 2026). Builds on 11 of its 62 references that are in the map. First posted on arXiv 7 Jun 2022.
Builds on
11 of 62 references.
References · 11
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Citing papers per year: 2022: 1.
1 paper.