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Title: Aeroacoustic Assessment of Wind Plant Controls

Abstract

The Aeroacoustic Assessment project aims to quantify changes in aeroacoustic noise generation by a utility scale wind turbine operating under imposed yaw offsets common for wake steering and wind plant control strategies. Active plant control utilizing wake deflection control strategies have been shown experimentally and computationally to reliably produce 1-2% of additional annual energy production (AEP) without significant changes in turbine structural loads, the potential impact on aeroacoustic emissions has yet to be quantified or completely understood. Yawed operation of a wind turbine changes the three-dimensional aerodynamic interaction between the rotor blades and the incoming atmospheric flow, leading to changes in noise generation. This work quantifies the extent to which active control induces additional aeroacoustic emissions from additional separation and other flow interaction dynamic effects. Given public concerns about wind turbine noise and the need for observational data required for regulators to establish noise restrictions, we must understand potential acoustic emissions resulting from active control prior to commercial deployment and the development of practical noise reduction methods and technologies. The work outlined in this report details the new aeroacoustic measurement capability developed at NREL and its application to making full-field observations of noise from a utility-scale wind turbine. Preliminary noisemore » modeling with the aeroacoustics module in OpenFAST helped to establish the design of the experiment, specifically targeting the noise observed at observers distributed around the DOE-owned GE 1.5 MW wind turbine. Low-frequency and infrasound measurement capability implemented in this project establish an operational baseline for the wind turbine, setting the stage for future control, rotor blade, and turbine design research.« less

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Wind Energy Technologies Office
OSTI Identifier:
1785330
Report Number(s):
NREL/TP-5000-79664
MainId:35885;UUID:d80f86c1-e985-4661-982a-1b9d66b8362a;MainAdminID:23456
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
17 WIND ENERGY; 54 ENVIRONMENTAL SCIENCES; 47 OTHER INSTRUMENTATION; wake steering; wind plant controls; aeroacoustics; wind turbine noise

Citation Formats

Hamilton, Nicholas, Bortolotti, Pietro E., Jager, Dave, Guo, Yi, Roadman, Jason M., and Simley, Eric. Aeroacoustic Assessment of Wind Plant Controls. United States: N. p., 2021. Web. doi:10.2172/1785330.
Hamilton, Nicholas, Bortolotti, Pietro E., Jager, Dave, Guo, Yi, Roadman, Jason M., & Simley, Eric. Aeroacoustic Assessment of Wind Plant Controls. United States. https://doi.org/10.2172/1785330
Hamilton, Nicholas, Bortolotti, Pietro E., Jager, Dave, Guo, Yi, Roadman, Jason M., and Simley, Eric. 2021. "Aeroacoustic Assessment of Wind Plant Controls". United States. https://doi.org/10.2172/1785330. https://www.osti.gov/servlets/purl/1785330.
@article{osti_1785330,
title = {Aeroacoustic Assessment of Wind Plant Controls},
author = {Hamilton, Nicholas and Bortolotti, Pietro E. and Jager, Dave and Guo, Yi and Roadman, Jason M. and Simley, Eric},
abstractNote = {The Aeroacoustic Assessment project aims to quantify changes in aeroacoustic noise generation by a utility scale wind turbine operating under imposed yaw offsets common for wake steering and wind plant control strategies. Active plant control utilizing wake deflection control strategies have been shown experimentally and computationally to reliably produce 1-2% of additional annual energy production (AEP) without significant changes in turbine structural loads, the potential impact on aeroacoustic emissions has yet to be quantified or completely understood. Yawed operation of a wind turbine changes the three-dimensional aerodynamic interaction between the rotor blades and the incoming atmospheric flow, leading to changes in noise generation. This work quantifies the extent to which active control induces additional aeroacoustic emissions from additional separation and other flow interaction dynamic effects. Given public concerns about wind turbine noise and the need for observational data required for regulators to establish noise restrictions, we must understand potential acoustic emissions resulting from active control prior to commercial deployment and the development of practical noise reduction methods and technologies. The work outlined in this report details the new aeroacoustic measurement capability developed at NREL and its application to making full-field observations of noise from a utility-scale wind turbine. Preliminary noise modeling with the aeroacoustics module in OpenFAST helped to establish the design of the experiment, specifically targeting the noise observed at observers distributed around the DOE-owned GE 1.5 MW wind turbine. Low-frequency and infrasound measurement capability implemented in this project establish an operational baseline for the wind turbine, setting the stage for future control, rotor blade, and turbine design research.},
doi = {10.2172/1785330},
url = {https://www.osti.gov/biblio/1785330}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {5}
}