Transactions on Electrical and Electronic Materials

  • 제8권6호
  • /
  • Pages.278-282
  • /
  • 2007
  • /
  • 1229-7607(pISSN)
  • /
  • 2092-7592(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
권호 표지
DOI QR코드

DOI QR Code

The Estimation of the Dielectric Strength Decrease of the Solid-solid Interfaces by using the Applied Voltage to Breakdown Time Characteristics

  • Shin, Cheol-Gi (Department of Digital and Industrial Electronic Engineering, Bucheon College) ;
  • Bae, Duck-Kweon (Department of Safety Engineering, Chungju National University)
  • 발행 : 2007.12.31
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

In the complex insulation system that is used in extra high voltage(EHV) devices, according to the trend for electric power equipment of high capacity and reduction of its size, macro interfaces between two different bulk materials which affect the stability of insulation system exist inevitably. In this paper, the dielectric strength decrease of the macro interfaces between epoxy and ethylene propylene diene terpolymer(EPDM) was estimated by using the applied voltage to breakdown time characteristics. Firstly, the AC short time dielectric strength of specimens was measured at room temperature. Then, the breakdown time was measured under the applied constant voltage which is 70% of short time breakdown voltage. With these processes, the life exponent n was determined by inverse power law, and the long time breakdown voltage can be evaluated. The best condition of the interface was LOS(low viscosity(350 cSt) silicone oil spread specimen). When 30 years last on the specimens, the breakdown voltage was estimated 44% of the short time breakdown voltage.

키워드

참고문헌

  1. V. Homburg and H. C. Kamer, 'Basic investigation of a macroscopic interface between two solid dielectrics', Conference Record of the 1994 IEEE International Symposium on Electrical Insulation, Pittsburgh, PA, USA, p. 446, 1994
  2. K. Uchida, S. Kobayashi, T. Kawashima, H. Tanaka, S. Sakuma, K. Hirotsu, and H. Inoue, 'Study on detection for the defects of XLPE cable lines', IEEE Trans. on Power Delivery, Vol. 11, No. 2, p. 663, 1996 https://doi.org/10.1109/59.544676
  3. C. Dang and D. Fournier 'Dielectric performance of interfaces in premolded cable joints', IEEE Trans. on Power Delivery, Vol. 12, No. 1, p. 29, 1997
  4. 'IEEE Guide for the Statistical Analysis of Electrical Insulation Voltage Endurance Data', ANSI/IEEE. Std. 930-1987
  5. C. Dang and D. Fournier, 'A study of the interfacial breakdown in cable joints', 1994 Annual Report of Conference on Electrical Insulation and Dielectric Phenomena, Arlington, Texas, USA, p. 518, 1994
  6. J. D. Smith and L. L. Hatfield, 'Measurements of the effects of surface roughness on flashover', 1988 Annual Report of Conference on Electrical Insulation and Dielectric Phenomena, Ottawa, Ontario, Canada, p. 47, 1994
  7. D. K. Bae, S.-K. Kim, S.-K. Lee, I.-H. Jung, and J.-U. Lee, 'Dielectric breakdown phenomenon of the interface between epoxy/EPDM', J. of KIEEME(in Korean), Vol. 12, No. 12, p. 1164, 1999

피인용 문헌

  1. Creepage Discharge Characteristics Along the Interface Between Two Solid Insulation Materials in GN2 vol.26, pp.4, 2016, https://doi.org/10.1109/TASC.2016.2545864
  2. Creepage Discharge Characteristics of Solid Insulation Materials for Superconducting Power Cable vol.28, pp.3, 2018, https://doi.org/10.1109/TASC.2018.2792464