变电站复杂声场中多点噪声源的鉴别

复杂声场中单个声源的鉴别和评价是噪声污染控制的重要环节。简要介绍了几种常用的噪声源鉴别方法,然后结合变电站复杂声场中噪声产生的实际情况,针对变电站主要声源噪声的特性提出了两种方法的基本原理和具体操作步骤,即声强测量法和基于波叠加的噪声源识别方法,用以进行变电站中多点噪声源的鉴别。这为建立变电站声场中多点声源鉴别的标准方法提供了可能;对于厂界噪声超过环保部门确定标准的变电站,应用这些方法可以提供明确的治理思路。

Identification of Single Noise Source in Complex Sound Field of Transformer Substation

The identification and evaluation of single noise source in complex sound field are important links in noise pollution control. Several routine methods to discriminate noises source were introduced. Combined with the characteristic of the complex acoustic field of transformer substation and the characteristic of the main noise sources in transformer substation, two methods were suggested. The first method was named sound intensity measurement, and the other was based an improved wave superposition ap- proach. The foundation principle and the practical steps of each method were introduced separately, which provided possibility to construct standard methods to discriminate the noises source in the complex acoustic field of transformer substation. Straightfor- ward management ideas will be advised by applying the method, in which factory bound noise exceeded the standard proposed by environment protection department.