Use of neural networks for the creation of hourly global and diffuse solar irradiance data at representative locations in Greece

Moustris, K; Pallatsos, AG; Bloutsos, A; Nikolaidis, K; Koronaki, I; Kavadlas, K

dc.contributor.author	Moustris, K	en
dc.contributor.author	Pallatsos, AG	en
dc.contributor.author	Bloutsos, A	en
dc.contributor.author	Nikolaidis, K	en
dc.contributor.author	Koronaki, I	en
dc.contributor.author	Kavadlas, K	en
dc.date.accessioned	2014-03-01T01:29:27Z
dc.date.available	2014-03-01T01:29:27Z
dc.date.issued	2008	en
dc.identifier.issn	0960-1481	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19267
dc.subject	neural networks	en
dc.subject	solar irradiance data	en
dc.subject.classification	Energy & Fuels	en
dc.title	Use of neural networks for the creation of hourly global and diffuse solar irradiance data at representative locations in Greece	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.renene.2007.09.028	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.renene.2007.09.028	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	In this work, a new approach is tested by applying neural networks treatment to meteorological time-series data sets, recorded during 1991-2000 at certain Greek locations, in order to create fully appropriate solar data information. Neural networks, in this case, are used for creating missing mean, maximum and minimum global and diffuse solar irradiance hourly data, when educated with other known meteorological time-series hourly values. For this purpose, hourly data of air temperature, relative humidity, sunshine duration, clouds' octals, as well as local latitude are used with regard to these sites. Neural networks' education process outputs are checked against known hourly values of solar irradiance, based upon the mentioned meteorological hourly raw data necessary for this action recorded at the National Observatory of Athens, the actinometric station at the Technological Education Institute (TEI) of Piraeus, and six other locations. Selection of these sites is representative of the climatic conditions in Greece, from north to south and east to west. Following the same scheme, the produced hourly global and diffuse mean hourly solar irradiance values are in a very good agreement (P<0.01) with actual measurements. (c) 2007 Elsevier Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	RENEWABLE ENERGY	en
dc.identifier.doi	10.1016/j.renene.2007.09.028	en
dc.identifier.isi	ISI:000253580100010	en
dc.identifier.volume	33	en
dc.identifier.issue	5	en
dc.identifier.spage	928	en
dc.identifier.epage	932	en