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Dielectric and Life Cycle Behaviour of a Cryogenic Insulation System

  • C. Sumereder
  • J. Gerhold
  • M. Muhr

Abstract

Since the discovery of high temperature superconductors (HTS) in 1986 several applications for power equipment were developed. The critical temperature of the used ceramic HTS (up to 110 K) lays over the boiling point of liquid nitrogen (77 K), which is used for cooling down to the operating temperature and as insulating medium. Because of this different specifications compared to conventional insulation systems the dielectric and life cycle behaviour of a cryogenic insulation system was analysed [1].

Keywords

Aging Behaviour Electrical Insulation Load Time Power Equipment Insulation System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    J. Gerhold: Potential of Cryogenic Liquids for Future Power Equipment Insulation in the Medium High Voltage Range, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 9, No. 6, December 2002Google Scholar
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    L. A. Dissado, J. C. Fothergill, S. V. Wolfe, R. M. Hill: Weibull Statistics in Dielectric Breakdown Theoretical Basis, Applications and Implications, IEEE Transactions on Electrical Insulation Vol. EI-19 No. 3, June 1984, p. 227CrossRefGoogle Scholar
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    C. Sumereder “Dielektrische Untersuchungen an Tieftemperaturisolationssystemen”, Doctoral Thesis, TU-Graz 2003Google Scholar
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    G.C. Montanari: Absolute vs. Comparative End-of-Life Age, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 4, No. 2, April 1997Google Scholar
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    R. Shively: Submerged Cryogenic Motor Materials Development, IEEE Electrical Insulation Magazine, Volume 19, Issue 3, May–June 2003, p. 7–11CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2004

Authors and Affiliations

  • C. Sumereder
    • 1
    • 2
  • J. Gerhold
    • 1
    • 3
  • M. Muhr
    • 1
    • 2
  1. 1.Graz University of TechnologyAustria
  2. 2.Institute of High Voltage Engineering and System ManagementGraz
  3. 3.Institute of Electrical Machines and DevicesGraz

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