配电设备低频噪声影响及防治措施

我国现行的声环境质量标准及噪声排放标准均采用A声级进行噪声评价,A计权网络对低频段声压级存在衰减,噪声频率低于500Hz,频率越低,A计权因子衰减越高。结合实际工作中的一些经验,对配电设备产生低频噪声的原理进行分析,并提出控制措施,从源头降低低频噪声源强。

China's current acoustic environment quality standards and noise emission standards are using A-weighted sound level for noise evaluation, there is attenuation of sound pressure level in low frequency band by A weight network, while noise frequency is less than 500 Hz, the lower the frequency, the higher the attenuation of A-weight factor. Based on some experience in practical work, this paper analyzes the principle of low frequency noise generated by distribution equipment, and puts forward control measures to reduce the low frequency noise source intensity from source.