期刊
ENERGY CONVERSION AND MANAGEMENT
卷 105, 期 -, 页码 1166-1177出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2015.09.001
关键词
Solar irradiance forecasting; Sky camera; Image processing; CSP plants; PV plants
资金
- Ministerio de Economia y Competititvidad [ENE2014-59454-C3-1, CGL2011-30377-C02-02]
- European Regional Development Fund
- Education Ministry of Chile [PMI ANT 1201]
- Solar Energy Research Center SERC-Chile [CONICYT/FON-DAP/15110019]
In the search for new techniques to predict atmospheric features that might be useful to solar power plant operators, we have carried out solar irradiance forecasting using emerging sky camera technology. Digital image levels are converted into irradiances and then the maximum cross-correlation method is applied to obtain future predictions. This methodology is a step forward in the study of the solar resource, essential to solar plant operators in adapting a plant's operating procedures to atmospheric conditions and to improve electricity generation. The results are set out using different statistical parameters, in which beam, diffuse and global irradiances give a constant normalized root-mean-square error value over the time interval for all sky conditions. The average measure is 25.44% for beam irradiance; 11.60% for diffuse irradiance and 11.17% for global irradiance. (C) 2015 Elsevier Ltd. All rights reserved.
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