What is it about?
Solar irradiance forecasting is important for high photovoltaic penetration. Will an advanced clear-sky model really improve satellite-based forecasts, especially when correction procedure with local measurements is available? This study explains this problem comprehensively with the measure-oriented and distribution-oriented approaches.
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Why is it important?
1. Both irradiance estimating and forecasting are analyzed based on China’s second-generation geostationary satellite Fengyun-4A, a satellite which is rarely discussed in the field of solar energy. 2. After affine transformation, the forecasting models achieve very close performances no matter which clear-sky model is implemented, except that forecasts with the advanced clear-sky model are much better calibrated at high irradiance levels. The case is carried out in Shanghai with frequent air pollution.
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This page is a summary of: Performance study of affine transformation and the advanced clear-sky model to improve intra-day solar forecasts, Journal of Renewable and Sustainable Energy, July 2020, American Institute of Physics, DOI: 10.1063/5.0009155.
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