Comparison of Different Methods for Measuring Solar Irradiation Data

Abstract

Knowledge of solar irradiation data is very important e.g. for planning solar power plants. Unfortunately valid data in suitable regions are quite rare. Our investigations at the PSA concern the improvement of irradiation data measured with Rotating Shadowband Pyranometers at promising sites. The data show larger deviations compared to real values and need to be revised and corrected after comparison with more precise data we measure with recently installed new thermal sensors. Finally TMY of the sites as well as irradiation maps derived from satellite images will be generated.