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Generation, propagation and annoyance of the noise of wind power plants; Tuulivoimaloiden melun synty, eteneminen ja haeiritsevyys

Technical Report:

Abstract

The most remarkable noise source of wind power plants is the rotor blades of turbines generating mainly aerodynamic broadband noise. In that noise there occurs an amplitude modulation of +- 2-3 dB, having typically a modulation frequency of about 1 Hz. Other noise sources are the various parts of the generation system, the most remarkable of which is the gearbox. The propagation of the noise from a power plant is essentially affected by, besides the geometrical attenuation, the wind conditions, the temperature profile especially in the vertical direction, and the thermal stability of the atmosphere. Above ground surface, the propagation is also affected by the height differences and the surface profile of the terrain, and the materials and the vegetation of the ground surface. The noise of wind power plants causes annoyance to a greater amount of people that could be deduced from the annoyance-noise exposure dependence of the transportation noise. This is considered to be due to the interaction of the visual and aural perceptions, and the especially disturbing properties of the noise of wind power plants, mainly due to the amplitude modulation of the noise. (orig.)
Authors:
Publication Date:
Feb 15, 2010
Product Type:
Technical Report
Report Number:
VTT-TIED-2529
Resource Relation:
Other Information: 34 refs.
Subject:
17 WIND ENERGY; WIND TURBINES; TURBINE BLADES; NOISE POLLUTION; ACOUSTICS
OSTI ID:
1010379
Research Organizations:
VTT Technical Research Centre of Finland, Espoo (Finland)
Country of Origin:
Finland
Language:
Finnish
Other Identifying Numbers:
Other: ISBN 978-951-38-7570-1; ISBN 978-951-38-7571-8; TRN: FI1103038
Availability:
Available at http://www.vtt.fi/inf/pdf/tiedotteet/2010/T2529.pdf or from VTT's Knowledge Solutions. e-mail: julkaisut@vtt.fi
Submitting Site:
FI
Size:
35 p. pages
Announcement Date:
Apr 04, 2011

Technical Report:

Citation Formats

Uosukainen, S. Generation, propagation and annoyance of the noise of wind power plants; Tuulivoimaloiden melun synty, eteneminen ja haeiritsevyys. Finland: N. p., 2010. Web.
Uosukainen, S. Generation, propagation and annoyance of the noise of wind power plants; Tuulivoimaloiden melun synty, eteneminen ja haeiritsevyys. Finland.
Uosukainen, S. 2010. "Generation, propagation and annoyance of the noise of wind power plants; Tuulivoimaloiden melun synty, eteneminen ja haeiritsevyys." Finland.
@misc{etde_1010379,
title = {Generation, propagation and annoyance of the noise of wind power plants; Tuulivoimaloiden melun synty, eteneminen ja haeiritsevyys}
author = {Uosukainen, S}
abstractNote = {The most remarkable noise source of wind power plants is the rotor blades of turbines generating mainly aerodynamic broadband noise. In that noise there occurs an amplitude modulation of +- 2-3 dB, having typically a modulation frequency of about 1 Hz. Other noise sources are the various parts of the generation system, the most remarkable of which is the gearbox. The propagation of the noise from a power plant is essentially affected by, besides the geometrical attenuation, the wind conditions, the temperature profile especially in the vertical direction, and the thermal stability of the atmosphere. Above ground surface, the propagation is also affected by the height differences and the surface profile of the terrain, and the materials and the vegetation of the ground surface. The noise of wind power plants causes annoyance to a greater amount of people that could be deduced from the annoyance-noise exposure dependence of the transportation noise. This is considered to be due to the interaction of the visual and aural perceptions, and the especially disturbing properties of the noise of wind power plants, mainly due to the amplitude modulation of the noise. (orig.)}
place = {Finland}
year = {2010}
month = {Feb}
}