The Transactions of the Korean Institute of Electrical Engineers B (대한전기학회논문지:전기기기및에너지변환시스템부문B)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A study of Dielectric Strength of Spacer for Tap Changer in a $SF^6 $ Gas Insulated Transformer

$SF^6 $ 가스변압기의 탭절환기용 스페이서의 절연내력에 관한 연구

  • Published : 2001.11.01
Download PDF
⟨ Previous Next ⟩

Abstract

Spacer is used between main tank and auxiliary tank for on load tap changer in gas insulated power transformer. This paper deals with electrical design of spacer and discusses different analysis method of between 2D FEM(finite element method) and 3D FEM. To design spacer, we modeled structure of two kind of coaxial cylinders of spacer conductors and analysised electric field of spacer at impulse and induced test voltage condition. Spacer has 13 conductors and electric field was changed according to arrangement of conductors. We could find out arrangement of conductors at which electric stress is minimum. And this arrangement was satisfied with actual test conditions.

Keywords

References

  1. E. Kuffel, 'High Voltage Engineering', Pergamon, pp. 266-279, 1988
  2. 한전구매시방서, '154kV 가스절연변압기', pp.13-15, 한국전력공사, 1998
  3. K.Okuyama, 'A Calculation Method for Impulse Voltage Distribution and Transferred Voltage in Transformer Windings' IEEE Trans., vol. PAS-97. no.3, pp. 932-936, 1978
  4. G.M.Stain 'A study of Initial Surge Distribution in Concentric Transformer Windings', IEEE Trans.,vol. PAS-83, pp.877-893, 1964
  5. 허우행, 하영식, 홍정표, 김규탁, '여유턴 방식에 의한 가스변압기의 절연설계에 관한 연구', KIEE Trans., vol. 50B. no.3, pp. 117 -120. 2001
  6. 朴旻鎬, '誘導機器', 東明社, pp.174-176, 2000
  7. 산업자원부, 'SF6 가스절연 방재형 변압기개발', pp.95-97, 2000
  8. 허우행, 하영식, 홍정표, 김규탁, 'SF6 가스절연변압기에서 권선의 섹션에 대한 절연내력 연구', KIEE, vol 49B, no.3, p.154. 2000
  9. 이복희, '高電壓 大電流 工學'. 청운각, pp.45-65, 1997
  10. 서길수, '$SF_6$ 가스중 V-t절연파괴특성', 대한전기학회 창립50주년 하계학술 대회논문집, pp.1771-1772, 1997