The Effects of Wind Veer During the Morning and Evening Transitions

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 centr...

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Bibliographic Details
Published in:Journal of physics. Conference series 2020-01, Vol.1452 (1), p.12075
Main Authors: Sanchez Gomez, M, Lundquist, J K
Format: Article
Language:English
Subjects:
Atmospheric boundary layer
Boundary layer transition
Electric power demand
inflow conditions
Low speed
Morning
Physics
Turbine blades
Turbines
wind direction
Wind effects
WIND ENERGY
Wind farms
Wind power
Wind shear
Wind turbines
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Summary: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.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1452/1/012075