SISTEMA - Solar Irradiance Monitoring Software (SIMS)
The Solar Irradiance Monitoring System (SIMS) is an advanced tool to be used by Photovoltaic (PV) and Concentration Photovoltaics (CPV) technologies users, developers and installers. SIMS makes use of an accurate geometric model, developed to estimate shadowing effects caused by orographic features and buildings, using Digital Terrain Models (DTM), and satellite data to retrieve irradiances information. The system can provide three services essential for PV and CPV technologies: Energy Production From PV Systems. Energy Production From Tracking Pv System. Global Solar Irradiance And Direct Normal Irradiance.
Energy Production from PV systems
Estimation of Energy production for PV systems requires information based on the Monthly Average Daily Global Solar Radiation (MADGSR) gathered from satellite data (EUMETSAT Down-welling Solar Shortwave radiation Flux, DSSF). To estimate the MADGSR all the images from the MSG database (from July 2008 to November 2011) are processed. Combining MADGSR and the input values, the system will provide the Total amount of energy that a PV plant can produce during an year.
Input And Output
Input parameters are:
- Site position (expressed in Lat and Lon)
- The surface orientation (azimuth angle)
- Surface Tilt Angle (tilt of the panel)
- Power Installed
Output is a .txt file with stored:
- the input information
- the total yearly irradiance
- the yearly averaged production of energy
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