Automatic generation of reference curves for improved short term irradiation prediction in PV power generation

US11588437B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Aditi Roy · Plainsboro, US
• Ti-chiun Chang · Plainsboro, US
• Patrick Reeb · Höchstadt an der Aisch, DE
• Joachim Bamberger · Stockdorf, DE

Key dates

• Filing date: Oct 29, 2020
• Grant date: Feb 21, 2023
• Expiry date: Aug 21, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E10/56
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

A system and method for correcting short term irradiance prediction for control of a photovoltaic power station includes an irradiance data manager that generates an observed irradiance curve based on irradiance measurements received from an irradiation sensor, and a reference curve generation engine that generates a reference curve representative of irradiance values for a clear sky day. An irradiance prediction engine generates an irradiance prediction curve based on image segmentation and motion filtering of cloud pixels in sky images. A prediction correction engine corrects the irradiance prediction curve within a short term future time interval based on probabilistic analysis of time segmented intervals of the observed irradiance curve, the reference curve, and the irradiance prediction curve.