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Abstract
This study explores the effects of inter-farm wakes and proposes staggering schemes that are most suitable for optimization of existing wind farm arrays to mitigate the effects of compound wakes. The case study considers a total of 9 out of 33 most deteriorated wind turbine for a microscale numerical analysis using the steady-state actuator disk model coupled with the mesoscale boundary condition data. Furthermore, the convective atmospheric boundary layer has also been considered. For vertically staggered layouts, the effect of the inter-farm wakes appeared mild at 100 m, modest at 80 m, and high at 60 m; as the maximum velocity deficit observed under the influence of compound wakes is approximately 13.3%, 14.1%, and 15.2%, respectively. Onsite recorded power data has been used to validate the baseline predicted powers at 80 m hub height. Both vertical and horizontal staggering options have been assessed for partial repowering. By elevating the turbines to a 100 m hub height, the cumulative power generation from the 9 × turbines increased by approximately 13.5% while reducing the hub height to 60 m decreased the power output by approximately 11.5% of that of the baseline at 80 m hub height. Further increase in cumulative power of up to 23% compared to existing layout is achieved by applying a lateral repositioning of 3 × underperforming turbines now positioned at 100 m hub height. This paper hence presents an applied insight for partial repowering of onshore wind farms affected by inter-farm wakes.
Original language | English |
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Article number | 117229 |
Journal | Applied Energy |
Volume | 298 |
Early online date | 10 Jun 2021 |
DOIs | |
Publication status | Published - 15 Sept 2021 |
Externally published | Yes |
Keywords
- Actuator disk model
- Commercial wind farm
- Compound wake interferences
- Model validation
- Partial repowering
- Vertical and horizontal staggering
ASJC Scopus subject areas
- Building and Construction
- Mechanical Engineering
- General Energy
- Management, Monitoring, Policy and Law
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Dive into the research topics of 'Optimization of a wind farm by coupled actuator disk and mesoscale models to mitigate neighboring wind farm wake interference from repowering perspective'. Together they form a unique fingerprint.Projects
- 1 Finished
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Meso- & Microscale Layout Optimization of Commercial-Scale Wind Farms under Intra- and Inter-Farm Wake Interferences
Javed, A. (PI)
1/01/19 → 30/11/21
Project: Other