Extreme wind estimate for Hornsea wind farm

Research output: Book/ReportReportResearch

Abstract

The purpose of this study is to provide estimation of the 50-year winds of 10 min and 1-s gust value at hub height of 100 m, as well as the design parameter shear exponent for the Hornsea offshore wind farm.

The turbulence intensity required for estimating the gust value is estimated using two approaches. One is through the measurements from the wind Doppler lidar, WindCube, which implies serious uncertainty, and the other one is through similarity theory for the atmospheric surface layer where the hub height is likely to belong to during strong storms. The turbulence intensity for storm wind strength is taken as 0.1.

The shear exponents at several heights were calculated from the measurements. The values at 100 m are less than the limit given by IEC standard for all sectors.

The 50-year winds have been calculated from various global reanalysis and analysis products as well as mesoscale models. The greatest sector-wise extreme winds are from west to northwest. Different data, different periods and different methods have provided a range of values of the 50-year wind and accordingly the gust values, as summarized in Table 15.
Original languageEnglish
PublisherDTU Wind Energy
Publication statusPublished - 2013
SeriesDTU Wind Energy I
Number0040

Bibliographical note

This is an internal report and therefore not available in full text. Please contact the author or the director of author's institute for further information

Keywords

  • Wind Energy Report-I-0040
  • DTU Wind Energy Report-I-0040

Cite this

Larsén, X. G. (2013). Extreme wind estimate for Hornsea wind farm. DTU Wind Energy. DTU Wind Energy I, No. 0040