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A Study on the Tank Noise Reduction Techniques of Power Transformers  

Kweon, Dong-Jin (한전 전력연구원)
Koo, Kyo-Sun (한전 전력연구원)
Kim, Jung-Chan (현대중공업)
Kim, Yoo-Hyun (일진전기)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.57, no.10, 2008 , pp. 1759-1766 More about this Journal
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 encloser to transformers in outdoor substations, and a soundproof door, shutter 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. In this paper, we investigated tank noise reduction techniques to develope a low noise transformer. According to the mode analysis of transformer tank, we found out characteristics and locations of noise on the tank, and it's nature vibration was also analysed. On the basis of these analysis, reinforcement equipment was installed around transformer tank, and ellipse shape tank was changed to round shape tank. The effect of noise reduction was evaluated using noise generation source.
Keywords
Transformer; Noise; Vibration; Tank; Reduction;
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  • Reference
1 Jun-Shin Lee, et. al., 'Development of a Silencer for Acoustic Enclosures', International Congress Sound & Vibration, pp. 1-7, 2007
2 Hiroyuki Matsuoka, Takao Shimada, 'Recent Noise Reduction Techniques for Power Transformers', 環境調和技術, pp. 41-44, 1996
3 Toshiaki Yanada, shunataro Munowa, Osamu Ichinokura and shinki kikuchi, 'Design and Analysis of Noise-Reduction Transformer Based on Equivalent Circuit', IEEE Transaction on Magnetics, pp.1351-1353, 1998
4 권동진 외, '저소음 변압기 개발을 위한 기초 조사 연구보고서', 전력연구원, pp. 1-92, 2004
5 권동진, '저소음 변압기 제작 및 적용실태 조사 관련 일본출장보고서', 전력연구원, pp. 1-31, 2004
6 권동진, 구교선 외, '소음규제 기준 및 변압기 소음민원 발생현황', 대한전기학회 전력용 변압기 위킹그룹 하계학술대회, pp. 41-45, 2005
7 한전 표준규격 ES-147, '변압기의 소음레벨 기준치', 1978
8 이준신, '의정부 변전소 소음저감방안 적용연구', 전력연구원, pp. 1-60, 2003