Trading off sound pressure level and average power production for wind farm layout optimization. (December 2017)

• Record Type: Journal Article
• Authors: Tingey, Eric B.; Ning, Andrew
• Is Part Of: Renewable energy. Volume 114:Part B(2017)
• Page Start: 547
• Page End: 555
• Publication Date: 2017-12
• Subjects: Turbine acoustics -- Wake model -- Wake propagation -- Wind farm optimization -- Wind turbine; BPM Brooks, Pope, and Marcolini (referring to the acoustic model) -- FLORIS FLOw Redirection and Induction in Steady-state -- NACA National Advisory Committee for Aeronautics -- NSGA Non-dominated Sorting Genetic Algorithm -- SNOPT Sparse Nonlinear OPTimizer -- SPL sound pressure level; Renewable energy sources -- Periodicals; Power resources -- Periodicals; Énergies renouvelables -- Périodiques; Ressources énergétiques -- Périodiques; 333.794
• DOI: 10.1016/j.renene.2017.07.057
• Languages: English
• ISSNs: 0960-1481

Abstract

Abstract: This research explores the trade-offs between a wind farm's average power production and noise impact on nearby observers. Two specific wind farm designs were studied and optimized using the FLORIS wake model and an acoustic model based on semi-empirical turbine noise calculations. It was found in the two wind farms that the average power production could be increased, up to 8.01% in one and 3.63% in the other, ignoring sound level considerations. Including a noise restriction in the optimization had a minimal impact on the optimal average power production within about a five-decibel range. Past this range, sound limitations decreased the wind farm's power production significantly. By analyzing average power production and sound pressure level together, we can take advantage of the multi-modality of the optimization to find solutions were noise impact can be improved with an insignificant effect on power production. Highlights: The average power production was increased up to 8.01% and 3.63% in the two wind farms studied. Within a five-decibel range, average power production could be increased with a lower noise level. The multi-modality of the problem allowed for increasing the power while decreasing the noise.