分析了750 kV变电站中的主要噪声源发声原理和传播途径，根据噪声发声体的声功率级，利用SoundPLAN软件对站内外不同位置进行噪声分析，得到直观的噪声分布图，制定出满足站内和厂界及敏感点的噪声控制措施。

This paper analyzed the main noise sources’ principle and transmission routes in 750 kV substations. According to the noise’s sound power levels, the noise inside and outside the stations was investigated with the SoundPLAN software, in order to get the intuitive noise distribution map and the noise control measures, which were suitable for the substation and the factory sectors, as well as the sensitive point.