The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Study on the Core Noise Reduction Techniques of Power Transformers

전력용 변압기 철심소음 저감기술에 관한 연구

  • 권동진 (한전전력연구원 전력계통연구소) ;
  • 구교선 (한전전력연구원 전력계통연구소) ;
  • 조익춘 ((주)효성 중공업연구소 전자기응용팀) ;
  • 김유현 (현대중공업 변압기계통) ;
  • 김융식 (일진중공업 저소음 변압기 개발)
  • Published : 2008.11.01
Download PDF
⟨ Previous Next ⟩

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 is 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 of the transformers. But these noise reduction methods are not satisfied. It should be considered to reduce transformer noise itself. In this paper, we investigated core noise reduction techniques to develope a low noise transformer. The techniques to reduce core noise of the transformer are application of high permeability grain oriented silicon sheets, decrease of magnetic flux density of core, application of 6step-lap core stacking method, improvement of core binding method(binding addition, band fixing) and application of rubber damper in oder to reduce transmission of core vibration, etc.

Keywords

References

  1. 김연환, 이현, 김수형, '154kV 남광주 변전소 소음영향 평가,' 전력연구원, pp. 1-9, 1999
  2. 김연환, '신마산 전력소 345kV 변압기 소음평가,' 전력 연구원, pp. 1-12, 2000
  3. 이준신, '의정부변전소 소음저감방안 적용연구,' 전력연구원, pp. 1-60, 2003
  4. 권동진, '저소음 변압기 개발을 위한 기초 조사 연구 보고서,' 전력연구원, pp. 1-92, 2004
  5. '생활소음 . 진동의 규제,' 소음 . 진동규제법 제39조, 1993
  6. '변압기의 소음레벨 기준치,' 한국전력 표준규격(ES147), 2006
  7. Hiroyuki Matsuoka, Takao Shimada, 'Recent Noise Reduction Techniques for Power Transformers,' 環境調和技術, pp. 41-44, 1996
  8. Toshiaki Yanada, shunataro Munowa, Osamu Ichinokura and shink kikuchi, 'Design and Analysis of Noise-Reduction Transformer Based on Equivalent Circuit,' IEEE Transaction on Magnetics, pp. 1351-1353, 1998
  9. 권동진, '저소음 변압기 제작 및 적용실태 조사 관련 일본출장보고서,' 전력연구원, pp. 1-31, 2004
  10. Rober F.Wolff, 'Drown out transformer noise(USA),' Power Delivery, pp. 83-85, 1983
  11. B.Weiser, H.Pfutzer and J.Anger, 'Relevance of Magnetostriction and Force for the Generation of Audible Noise of Transformer Cores,' IEEE Transaction on Magnetics, Vol 36, No.5, pp. 3759-3777, 2000 https://doi.org/10.1109/20.908346
  12. 'AK Steel Oriented And TRAN-COR H.(ELECTRICAL STEELS),' AK Steel Corporation Electrical Steels, USA, 1999