| Title |
A Study on the Soundproofing Plate Techniques for Noise Reduction of Power Transformers |
| Authors |
Dong-Jin Kweon ; Kyo-Sun Koo ; Jung-Chan Kim ; Jin Kim |
| Keywords |
Transformer ; Noise reduction ; Soundproof panel ; Transmission loss |
| Abstract |
According to the increase of power demand and expansion of downtown, it is necessary to install transformers additionally in operating substations and construct substations in residential area. But the public complaint has been increased due to the transformer noise of the substation. KEPCO has used a vibration preventing pad, various soundproof walls and an enclosure to transformers in outdoor substations, and a soundproof door, shuttcr and wind-path soundproof equipment in indoor substations to block the sound propagation from the transformers. But these noise reduction methods are not satisfied. It should be considered to reduce transformer noise itself. To shut out sound emitted from transformers, we developed a soundproof technology that wall up reinforcing bar by steel sheet. For the practical application of it, we analyzed the vibration charactclistics of a transformner tank and reduction of noise according to soundproof plate. As a result, it is confirmed that the technology can reduce 11 [dB] of transformer noise. |