The Effects of Wind Veer During the Morning and Evening Transitions [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 333.9 Other natural resources
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: Article No. 012075 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 257189
• Chủ đề: 1. 17 wind energy; 2. Atmospheric boundary layer; 3. Inflow conditions; 4. Wind direction; 5. Wind shear

Tóm tắt

Direction and speed wind shear modify turbine performance by changing inflow conditions on turbine blades. Using observations from the 2013 CWEX campaign, we found the daily atmospheric boundary layer transitions (morning and evening) match periods of high electricity demand for a wind farm in central Iowa. Power production during these periods was undermined for large direction shear and low speed shear scenarios. The morning transition displayed larger direction shear over the rotor layer for most wind speeds compared to the evening period. This resulted in lower turbine performance for the morning compared to the evening and whole day. This study shows that the combined effect of direction and speed shear is affecting turbine operation during high electricity demand times of day, predominantly during the morning at this wind farm.