Abstract
Wake steering is a wind farm control strategy in which upstream wind turbines are misaligned with the wind to deflect their wakes away from downstream turbines, thereby increasing net energy production. But research suggests that the effectiveness of wake steering strongly depends on atmospheric conditions such as stability. In this paper, we investigate results from a two-turbine wake-steering experiment at a commercial wind plant to assess the impact of stability and five other atmospheric variables on wake-steering performance. Specifically, for different atmospheric condition bins we compare the ability of the controller to achieve the intended yaw offsets, the power gain from wake steering, and the reduction in wake losses. Further, we analyze wake-steering performance as a function of wind speed to eliminate the confounding impact of different wind speed distributions in different atmospheric conditions. Overall, we find that wind direction standard deviation is the best predictor of wake-steering performance, followed by turbulence intensity and turbulent kinetic energy. The results suggest the importance of adapting wake-steering control strategies to different atmospheric conditions.
Original language | American English |
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Article number | Article No. 032097 |
Number of pages | 11 |
Journal | Journal of Physics: Conference Series |
Volume | 2265 |
Issue number | 3 |
DOIs | |
State | Published - 2 Jun 2022 |
Event | 2022 Science of Making Torque from Wind, TORQUE 2022 - Delft, Netherlands Duration: 1 Jun 2022 → 3 Jun 2022 |
Bibliographical note
Publisher Copyright:© Published under licence by IOP Publishing Ltd.
NREL Publication Number
- NREL/JA-5000-82125
Keywords
- atmospheric stability
- turbulence
- wake steering
- Wind farm control