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Title:
CALCULATING A RETURN PERIOD WIND SPEED
Document Type and Number:
WIPO Patent Application WO/2020/103989
Kind Code:
A3
Abstract:
A method of calculating a wind speed associated with a return period at a proposed wind turbine site is provided. The method comprises selecting a first set of storms from wind speed measurements measured at the proposed site, and selecting a second set of storms from modelled wind speeds, the modelled wind speeds being estimates of wind speeds at the proposed wind turbine site during the measurement period from a mesoscale data set. A comparison is made of characteristic wind speeds of the first and second sets of storms to determine a correction factor. A third set of storms is selected from an extended set of modelled wind speeds from an extended mesoscale data set, and the correction factor is applied to characteristic wind speeds of the third set of storms to provide corrected wind speeds. A wind speed associated with the return period is calculated from the corrected characteristic wind speeds.

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Inventors:
ZAGAR MARK (DK)
VASUDEVAN KARTHIK (DK)
Application Number:
PCT/DK2019/050343
Publication Date:
July 02, 2020
Filing Date:
November 12, 2019
Export Citation:
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Assignee:
VESTAS WIND SYS AS (DK)
International Classes:
G01W1/10
Foreign References:
US7228235B22007-06-05
Other References:
"IEC 61400-1 ED4: Wind energy generation systems - Part 1: Design requirements", 10 August 2018 (2018-08-10), pages 1 - 169, XP082013127, Retrieved from the Internet [retrieved on 20180810]
R.I. HARRIS: "Gumbel re-visited - a new look at extreme value statistics applied to wind speeds", JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS, vol. 59, no. 1, 1 January 1996 (1996-01-01), AMSTERDAM, NL, pages 1 - 22, XP055663038, ISSN: 0167-6105, DOI: 10.1016/0167-6105(95)00029-1
M.D.G DUKES ET AL: "Estimation of Extreme Wind Speeds with Very Long Return Periods", JOURNAL OF APPLIED METEOROLOGY, vol. 34, 1 September 1995 (1995-09-01), pages 1950 - 1961, XP055663062
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