Photovoltaic Irradiation Forecasting for Power Network Stabilization

The patent introduces an intermediary detection system (cameras, light sensors, irradiation detectors) that indirectly measures cloud proximity and irradiation changes before actual shading occurs. This intermediary detection provides both early warning (addressing lead time) and precise measurement of irradiation changes (addressing precision), resolving the contradiction between early preparation and accurate timing.

The system performs preliminary detection of irradiation increases that precede actual shading events. By detecting the increase in light irradiation as clouds approach (before they block the sun), the system enables preliminary activation of compensating measures, thus providing both lead time and accurate prediction of shading occurrence.

The patent replaces complex mechanical/optical systems (upwardly directed cameras with fisheye lenses and sophisticated identification algorithms) with a simpler irradiation detection approach. By using light sensors, pyranometers, or power output measurements to detect irradiation increases, the system achieves cloud detection and shading prediction without requiring complex image processing algorithms or specialized camera systems.

The patent extracts the essential measurement function from the complex camera system. Instead of using full cloud distribution imaging and complex algorithms, it extracts only the critical information needed: the increase in light irradiation before shading. This extraction simplifies the device while maintaining the ability to predict shading events accurately.