Investigation of wind shear coefficients and their effect on electrical energy generation

Firtin E., Güler Ö., Akdag S. A.

APPLIED ENERGY, cilt.88, sa.11, ss.4097-4105, 2011 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 88 Sayı: 11
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1016/j.apenergy.2011.05.025
  • Dergi Adı: APPLIED ENERGY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.4097-4105
  • Anahtar Kelimeler: Wind shear coefficient, Wind energy, Wind turbine, POTENTIAL ASSESSMENT, POWER, EXTRAPOLATION
  • İstanbul Teknik Üniversitesi Adresli: Evet

Özet

Wind measurements are generally performed below wind turbine hub heights due to higher measurement and tower costs. In order to obtain the wind speed at the hub height of the turbine, the measurements are extrapolated, assuming that the wind shear is constant. This assumption may result in some critical errors between the estimated and actual energy outputs. In this paper wind data collected in Balikesir from October 2008 to September 2009, has been used to show the effects of wind shear coefficient on energy production. Results of the study showed that, the difference between wind energy production using extrapolated wind data and energy production using measured wind data at hub height may be up to 49.6%. (C) 2011 Elsevier Ltd. All rights reserved.