All-Sky Imaging: A Way to Increase Solar Irradiance Forecasting Resolution and Accuracy

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

All-Sky Imaging: A Way to Increase Solar Irradiance Forecasting Resolution and Accuracy

Popis výsledku v původním jazyce

The way to mitigate the volatility of solar-based energy sources is to predict the intensity of solar irradiation and the resulting power generation. Thus the precise estimation of power generated in a certain time frame is the key to managing solar power sources to be in conformity with the needs of the energy distribution grid. Namely, a variety of applications varying from the Building Integrated Photovoltaic (BIPV) to large scale power plants are the main areas of interest. This paper proposes methods that can be used to reach a high spatial and temporal resolution of solar irradiance prediction together with a precision comparison of implementation at the University Centre for Energy Efficient Buildings (UCEEB CTU). These methods show ways how to get from the low spatial resolution of several square kilometres to a place specific prediction using local feedback. Applying All Sky Imager enables to reach time resolution with a granularity of even 10 seconds in a limited short time horizon of less than one hour. Sophisticated processing of consequent all-sky images proved to be a viable way to reach a high level of precision when predicting solar irradiance in the nearest future (from approx. 20 minutes up to several hours). Cloud motion vectoring techniques together with our developed model to derive solar irradiance components were tested in various periods of time during the year. This paper presents the results of the prediction compared to measured irradiance data over typical days.

Název v anglickém jazyce

All-Sky Imaging: A Way to Increase Solar Irradiance Forecasting Resolution and Accuracy

Popis výsledku anglicky

The way to mitigate the volatility of solar-based energy sources is to predict the intensity of solar irradiation and the resulting power generation. Thus the precise estimation of power generated in a certain time frame is the key to managing solar power sources to be in conformity with the needs of the energy distribution grid. Namely, a variety of applications varying from the Building Integrated Photovoltaic (BIPV) to large scale power plants are the main areas of interest. This paper proposes methods that can be used to reach a high spatial and temporal resolution of solar irradiance prediction together with a precision comparison of implementation at the University Centre for Energy Efficient Buildings (UCEEB CTU). These methods show ways how to get from the low spatial resolution of several square kilometres to a place specific prediction using local feedback. Applying All Sky Imager enables to reach time resolution with a granularity of even 10 seconds in a limited short time horizon of less than one hour. Sophisticated processing of consequent all-sky images proved to be a viable way to reach a high level of precision when predicting solar irradiance in the nearest future (from approx. 20 minutes up to several hours). Cloud motion vectoring techniques together with our developed model to derive solar irradiance components were tested in various periods of time during the year. This paper presents the results of the prediction compared to measured irradiance data over typical days.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the International Conference on Digital Image & Signal Processing (DISP’19)

ISBN

978-1-912532-09-4

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

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Název nakladatele

University of Oxford

Místo vydání

Oxford

Místo konání akce

Oxford

Datum konání akce

29. 4. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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