IEC 61400-11 Edition 2.1-2006
风轮发电机系统.第11部分:噪音测量技术

Wind turbine generator systems - Part 11: Acoustic noise measurement techniques

标准号

IEC 61400-11 Edition 2.1-2006

发布日期

2006年11月

实施日期

废止日期

无

中国标准分类号

F11

国际标准分类号

17.140.20;27.180

发布单位

IX-IEC

代替标准

IEC 61400-11-2012

适用范围

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 enough away 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. The 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. If, in some cases, less comprehensive measurements are needed, such measurements are made according to the relevant parts of this standard.