风电机组噪声产生原因及抑制研究

Research on Causes and Suppression of Wind Turbine Noise

介绍了风电机组运行过程中噪声的构成,对偏航和叶片噪声的成因和降噪方法做了着重分析。偏航噪声与偏航系统安装、维护、材质等有密切关联,可以通过维护、技改、更换材质等方法降低噪声,并论述了偏航降噪技术研究的现状和的最新成果。叶片噪声方面,介绍了风电机组气动噪声源的基本组成和目前叶片降噪的主要方法,其中重点分析了锯齿尾翼后缘降噪技术,并论述了锯齿尾翼后缘降噪技术研究的现状和应用的最新成果。该研究结果可为风电机组的降噪工作提供参考。

This paper introduces the composition of noise during the operation of wind turbines,specifically analyzing the causes and reduction methods of yaw and blade noise,highlights that the yaw noise is closely related to the installation,maintenance and material of the yaw system,and the noise can be reduced by maintenance,technical transformation,material replacement and other methods,and discusses the current status and latest results of the research on yaw noise reduction technologies.In terms of blade noise,the basic composition of aerodynamic noise sources of wind turbines and the main methods of blade noise reduction are introduced,with a particular emphasis on the noise reduction technology of the trailing edge of the sawtooth tail,and the current status and application of the noise reduction technology of the trailing edge of the sawtooth tail is discussed,which provides a reference for the noise reduction of wind turbines.