标准摘要
[中文适用范围]： 本部分 IEC 61400 提出了测量程序，使风力涡轮机的噪声排放能够被表征。这涉及使用适合在机器附近位置进行噪声排放评估的测量方法，以避免由于声音传播引起的误差，但距离足够远以允许有限的源尺寸。描述的程序在某些方面与社区噪声研究中采用的噪声评估不同。它们旨在促进风力涡轮机噪声相对于一系列风速和方向的表征。测量程序的标准化也将促进不同风力涡轮机之间的比较。 这些程序提出了方法，使单个风力涡轮机的噪声排放能够以一致和准确的方式进行表征。这些程序包括以下内容： ·声学测量位置的位置；获取声学、气象和相关的风力涡轮机运行数据的要求；对所获得数据的分析和数据报告的内容；以及用于环境评估的特定声学排放参数和相关描述符的定义。 本国际标准不限于特定尺寸或类型的风力涡轮机。本标准中描述的程序允许对风力涡轮机的噪声排放进行彻底描述。小型风力涡轮机的方法在附录 F 中描述。 [外文原描述]： IEC 61400-11:2012+A1:2018 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. This new edition constitutes a technical revision, introducing new principles for data reduction procedures. This consolidated version consists of the third edition (2012) and its amendment 1 (2018). Therefore, no need to order amendment in addition to this publication. The contents of the corrigendum of October 2019 have been included in this copy.
英文名称Wind turbines - Part 11: Acoustic noise measurement techniques