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

  • 제59권10호
  • /
  • Pages.1832-1838
  • /
  • 2010
  • /
  • 1975-8359(pISSN)
  • /
  • 2287-4364(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지
DOI QR코드

DOI QR Code

가속 열 열화에 따른 환경친화형 변압기 절연물의 전기적-기계적 특성 분석

Analyses on Electrical-Mechanical Characteristics of Environment-friendly Transformer Insulating Material by Accelerated Thermal Aging

  • 투고 : 2010.07.08
  • 심사 : 2010.09.13
  • 발행 : 2010.10.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Aging of transformer insulating material in natural ester insulating oil is compared to that in conventional transformer oil. Aging of insulating paper and insulating oil have been studied by performing accelerated thermal aging test. Sealed aging test vessels containing cooper, laminated core, Kraft paper and insulating oil(natural oil or mineral oil) were aged at $140^{\circ}C$ for 500, 1000, 1500 and 2000 hours. Insulating oils after aging are investigated with total acid number, breakdown voltage and viscosity. Also, degradation of insulating paper after aging is determined using breakdown voltage and mechanical strength. Accelerated aging studies demonstrate a slower aging rate for natural ester insulating oil compared to the rate for conventional mineral oil.

키워드

참고문헌

  1. C.P. McShane, G.A. Gauger, J. Luksich, "Fire Resistant Natural Ester Dielectric Fluid and Novel Insulation System for Its Use", IEEE/PES Transmission & Distribution Conference, April 12-16, 1999.
  2. William Il. Bartley, "Life Cycle Management of Utility Transformer Assets", HSB report. Oct. 10-11, 2002.
  3. C. Patrick Mcshane, "Relative Properties of the New Combusiton-resist Vegetable-oil-based Dielectric Coolant for Distribution and Power Transformers", IEEE T&A Vol.37, No.4, pp1132-1139, 2001.
  4. D. Vukovic AND S. Tenbohlen, "COMPARATIVE EVALUATION OF BREAKDOWN STRENGTH OF NATURAL ESTERS AND MINERAL OIL", Proceedings of the 16th International Symposium on High Voltage Engineering, 2009.
  5. D. P. Stockton, J. R. Bland, T. McClanahan, "Natural ester transformer fluid: safety, reliability & environmental performance", IEEE Paper No.PCIC-2007-34.
  6. T. Kanoh, Y. hatta, and T. Hikosaka, "Analyses of Electro-Chemical Characteristics of Palm Fatty Acid Esters as Insulating Oil", IEEE 16th International Conference on Dielectric Liquids, 2008.
  7. Takashi Suzuki, "Characteristics of Palm Fatty Acid Ester (PFAE), a New Vegetable Based Insulating Oil for Transformers", IEEJ Trans. PE, Vol. 129, No.8, 2009.
  8. William H. Bartley, "Life Cycle Management of Utility Transformer Assets", HSB report, Oct. 10-11,2002.
  9. 김필환, "가속 열 열화에 따른 유입 층간 절연지의 전기적 특성 분석", 충남대학교 대학원 논문집 제22집 pp.73-80, 2004.
  10. IEEE Std. C.57.91, "IEEE Guide for Loading Mineral Oil Immersed Transformers", 1995.
  11. A.M. Emsley and G.C. Stevens. "Review of chemical indicators of degradation of cellulosic electrical paper insulation in oil-filled transformers", IEE Proc.-Sci.meas. Technol, Vol. 141, No.5, September 1994.
  12. 손명수, "변압기용 절연재료의 전기적특성에 관한 연구", 연세대학교 석사학위 논문, p 12-13.
  13. 민윤홍, "저손실형 복합절연 주상변압기 개발에 관한 연구", 호서대학교 석사학위 논문, p6-14.
  14. KS C IEC60156, "절연유-상용 주파수에서의 절연 파괴 전압 측정-시험방법", 2003.
  15. ASTM D6871, "Standard Specification for Natural (vegetable Oil) Ester Fluids used in Electical Apparatus", 2003.
  16. KS C IEC 60554, "전기용 셀룰로오스 페이퍼-시험방법", 2003.