Noise reduction device

The invention relates to a noise reduction device, and mainly relates to the technical field of power grid transmission and distribution. The noise reduction device comprises a mounting box, a buffer and a noise reduction assembly. Wherein a mounting cavity is formed in the mounting box and is used for accommodating a transformer; one end of the buffer is connected to the mounting box, and the other end is connected with a to-be-mounted position; the noise reduction assembly is installed in the installation cavity and comprises a vibrating diaphragm, a coil connected to the vibrating diaphragm and at least two magnetic bodies arranged at intervals, and at least one coil connected with a lead is arranged between any adjacent magnetic bodies. By means of the arrangement, the buffer can absorb part of vibration generated by the transformer installed in the installation box due to work and transmitted through the installation box and the buffer; the noise reduction assembly can convert vibration energy which is g