Geographical and seasonal variability of the global 鈥減ractical鈥?wind resources

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• 作者：Cristina L. Archer ; Mark Z. Jacobson
• 关键词：Wind power ; Wind energy ; Wind ; Numerical modeling ; Capacity factor
• 刊名：Applied Geography
• 出版年：December, 2013
• 年：2013
• 卷：45
• 期：Complete
• 页码：119-130
• 全文大小：6270 K

文摘

This paper provides global and seasonal estimates of the 鈥減ractical鈥?wind power obtained with a 3-D numerical model (GATOR-GCMOM) that dynamically calculates the instantaneous wind power of a modern 5聽MW wind turbine at 100-m hub height at each time step. 鈥淧ractical鈥?wind power is defined as that delivered from wind turbines in high-wind locations (year-average 100-m wind speed聽鈮ヂ?聽m/s) over land and near-shore, excluding both polar regions, mountainous, and conflicting land use areas, and including transmission, distribution, and wind farm array losses. We found that seasonal variations in the global practical wind resources are significant. The highest net land plus near-shore capacity factors globally are found during December-January-February and the lowest during June-July-August. The capacity factors in the transitional seasons (March-April-May and September-October-November) are rather similar to one another in terms of geographical patterns and frequency distributions. The yearly-average distributions of capacity factors, whether in terms of geographic patterns or frequency distributions, differ from those in all four seasons, although they are closest to the transitional seasons. Regional practical wind resources are sensitive to seasons and to thresholds in year-average wind speed and bathymetry, but are more than enough to supply local electricity demand in all regions except Japan.