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Title: Method of solar power prediction

Abstract

Techniques for estimating direct and diffuse sunlight reaching a location as a function of time using color whole sky images are provided. In one aspect, a method for forecasting solar insolation is provided that includes the steps of: obtaining color whole sky images using a digital camera which are taken at different times, and wherein an image of a solar disk is present in at least one of the color whole sky images; creating sky transparency images from the color whole sky images; determining atmospheric solar scattering based on a width of the solar disk in the color whole sky images; determining cloud motion trajectories from a time series of the sky transparency images; and calculating the solar insolation as a function of time using the sky transparency, the atmospheric solar scattering, and the cloud motion trajectories. A system for forecasting solar insolation is also provided.

Inventors:
; ; ;
Issue Date:
Research Org.:
International Business Machines Corp., Armonk, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1459577
Patent Number(s):
10007999
Application Number:
15/233,412
Assignee:
International Business Machines Corporation (Armonk, NY)
Patent Classifications (CPCs):
G - PHYSICS G06 - COMPUTING G06T - IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
H - ELECTRICITY H04 - ELECTRIC COMMUNICATION TECHNIQUE H04N - PICTORIAL COMMUNICATION, e.g. TELEVISION
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DOE Contract Number:  
EE0006017
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Aug 10
Country of Publication:
United States
Language:
English

Citation Formats

Hamann, Hendrik F., Klein, Levente, Lu, Siyuan, and van Kessel, Theodore G. Method of solar power prediction. United States: N. p., 2018. Web.
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Hamann, Hendrik F., Klein, Levente, Lu, Siyuan, & van Kessel, Theodore G. Method of solar power prediction. United States.
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Hamann, Hendrik F., Klein, Levente, Lu, Siyuan, and van Kessel, Theodore G. Tue . "Method of solar power prediction". United States. https://www.osti.gov/servlets/purl/1459577.
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@article{osti_1459577,
title = {Method of solar power prediction},
author = {Hamann, Hendrik F. and Klein, Levente and Lu, Siyuan and van Kessel, Theodore G.},
abstractNote = {Techniques for estimating direct and diffuse sunlight reaching a location as a function of time using color whole sky images are provided. In one aspect, a method for forecasting solar insolation is provided that includes the steps of: obtaining color whole sky images using a digital camera which are taken at different times, and wherein an image of a solar disk is present in at least one of the color whole sky images; creating sky transparency images from the color whole sky images; determining atmospheric solar scattering based on a width of the solar disk in the color whole sky images; determining cloud motion trajectories from a time series of the sky transparency images; and calculating the solar insolation as a function of time using the sky transparency, the atmospheric solar scattering, and the cloud motion trajectories. A system for forecasting solar insolation is also provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {6}
}
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Works referenced in this record:

Solar Energy Forecasting
patent-application, February 2017

Direct normal irradiance forecasting and its application to concentrated solar thermal output forecasting – A review
journal, October 2014

Irradiance Forecasting for the Power Prediction of Grid-Connected Photovoltaic Systems
journal, March 2009

Intra-hour DNI forecasting based on cloud tracking image analysis
journal, May 2013

A Technique for Global Monitoring of Net Solar Irradiance at the Ocean Surface. Part I: Model
journal, September 1992

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