Persistence of low wind speed conditions and implications for wind power variability

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dc.contributor.author Leahy, Paul G.
dc.contributor.author McKeogh, Eamon J.
dc.date.accessioned 2012-09-18T11:08:15Z
dc.date.available 2012-09-18T11:08:15Z
dc.date.copyright 2012
dc.date.issued 2012
dc.identifier.citation Leahy, P. and McKeogh, E. (2012) 'Persistence of low wind speed conditions and implications for wind power variability'. Wind Energy, http://dx.doi.org/10.1002/we.1509 en
dc.identifier.issn 1099-1824
dc.identifier.uri http://hdl.handle.net/10468/709
dc.identifier.doi 10.1002/we.1509
dc.description.abstract As the penetration of wind generation increases on power systems throughout the world, the effects of wind variability on power systems are of increasing concern. This study focuses on sustained occurrences of low wind speeds over durations ranging from 1 h to 20 days. Such events have major implications for the variability of energy yields from wind farms. This, in turn, influences the accuracy of wind resource assessment. The frequency analysis techniques commonly used to study wind variability cannot represent the autocorrelation properties of wind speeds and thus provide no information on the probabilities of occurrence of such sustained, low wind events. We present two complementary methods for assessing wind variability, runs analysis and intensity–duration–frequency analysis, both with emphasis on characterising the occurrence of continuous, extended periods (up to several days) of low wind speeds. Multi-annual time series of hourly wind speeds from meteorological stations in Ireland are analysed with both techniques. Sustained 20-day periods corresponding to extremely low levels of wind generation are found to have return periods of around 10 years in coastal areas. Persistent, widespread low wind speed conditions across the entire country are found to occur only rarely. en
dc.description.sponsorship Science Foundation Ireland (Stokes Lectureship programme) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher John Wiley & Sons, Ltd. en
dc.rights Copyright © 2012 John Wiley & Sons, Ltd. This is the pre-peer reviewed version of the following article: LEAHY, P. G. & MCKEOGH, E. J. 2012. Persistence of low wind speed conditions and implications for wind power variability. Wind Energy, published in final form at http://dx.doi.org/10.1002/we.1509. en
dc.subject Wind resource en
dc.subject Meteorology en
dc.subject Extreme values en
dc.subject Ireland en
dc.subject Intensity–duration–frequency en
dc.title Persistence of low wind speed conditions and implications for wind power variability en
dc.type Article (peer-reviewed) en
dc.internal.authorurl http://research.ucc.ie/profiles/D012/paulleahy en
dc.internal.authorurl http://research.ucc.ie/profiles/D012/emckeogh en
dc.internal.authorcontactother Paul Leahy, Civil Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: paul.leahy@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2012-09-17T12:34:14Z
dc.description.version Submitted Version en
dc.internal.rssid 135560550
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Enerco Energy Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Wind Energy en
dc.internal.copyrightchecked No en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress paul.leahy@ucc.ie en


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