Measurements of solar radiation, development of a climate file for Gävle and calibration of a PV-simulation program

Sammanfattning

The research proposed consists in providing a climatic file of received radiation together with solar electric generation for a 1.17 kWp PV system in the city of Gävle. In addition, both radiation and solar electric generation will be compared making use of the WINSUN program. Possible disparities between both data have been analyzed. The interest of this study lies in the lack of a file that provides radiation data in the city of Gävle, which may be of help to people interested in making some kind of photovoltaic installation. Similar studies have been carried out previously in different locations which have tested different models to evaluate various climatic factors affecting the performance of the panels. The research method has been a case study in which monocrystalline solar panels installed in building 45 of the University of Gävle (HiG) have been analyzed together with the radiation data provided by three pyranometers. The results exhibit the importance of adjusting parameters such as diffuse coefficient, horizontal shading, and system efficiency. Results of this study show an accurate climate file, with little errors between measured and simulated data, with values of global performance indicator (GPI) (-2.70E-10, -1.06E-12) for 2022 and 2023 respectively.