UNLIMITED FREE ACCESS TO THE WORLD'S BEST IDEAS

close

NEN-EN-IEC 61400-11

Wind turbines - Part 11: Acoustic noise measurement techniques

active, Most Current
Organization: NEN
Publication Date: 1 April 2013
Status: active
Page Count: 70
ICS Code (Wind turbine energy systems): 27.180
scope:

This part of IEC 61400 presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission assessment at locations close to the machine, in order to avoid errors due to sound propagation, but far away enough to allow for the finite source size. The procedures described are different in some respects from those that would be adopted for noise assessment in community noise studies. They are intended to facilitate characterisation of wind turbine noise with respect to a range of wind speeds and directions. Standardisation of measurement procedures will also facilitate comparisons between different wind turbines. The procedures present methodologies that will enable the noise emissions of a single wind turbine to be characterised in a consistent and accurate manner. These procedures include the following: - location of acoustic measurement positions; - requirements for the acquisition of acoustic, meteorological, and associated wind turbine operational data; - analysis of the data obtained and the content for the data report; and - definition of specific acoustic emission parameters, and associated descriptors which are used for making environmental assessments. This International Standard is not restricted to wind turbines of a particular size or type. The procedures described in this standard allow for the thorough description of the noise emission from a wind turbine. A method for small wind turbines is described in Annex F.

Document History

NEN-EN-IEC 61400-11
April 1, 2013
Wind turbines - Part 11: Acoustic noise measurement techniques
This part of IEC 61400 presents measurement procedures that enable noise emissions of a wind turbine to be characterised. This involves using measurement methods appropriate to noise emission...
July 1, 2006
Wind turbine generator systems - Part 11: Acoustic noise measurement techniques
This amendment to IEC 61400-11:2002 addresses special cases where 95 % of rated power is reached below 10 m/s speed at 10 m height and for sites where wind speeds of 10 m/s at 10 m height are very...
July 1, 2003
Wind turbine generator systems - Part 11: Acoustic noise measurement techniques
Presents measurement procedures that enable noise emissions of a wind turbine to be characterized with respect to a range of wind speeds and directions. Allows comparisons between different wind...
January 1, 1999
Wind turbine generator systems - Part 11: Acoustic noise measurement techniques
Presents sound measurement procedures that enable noise emissions of a wind turbine to be characterized. This involves using measurement methods appropriate to noise emission assessment at locations...
Advertisement