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S2F10 in SF6 Insulated Equipment

  • Lutz Niemeyer

Abstract

The highly toxic SF6 decomposition product S2F10 is suspected to constitute a health risk associated with gas insulated equipment. In this paper a method is presented by which maximal S2F10 concentrations in operating GIS can be estimated under worst case conditions. The method is based on simple integral discharge models and makes use of the results of the CRADA activity. It is found that neither partial discharge activity nor disconnector switching can lead to risk relevant S2F10 concentrations.

Keywords

Surface Decomposition Volume Decomposition Contact Separation Exponential Decay Time Gaseous Dielectric 
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.
    D.R. James, I. Sauers et al., “Investigation of S2F10 Production and Mitigation in Compressed SF6-Insulated Power Systems”, IEEE EI Insul. Magazine, 9, 29, (1993)CrossRefGoogle Scholar
  2. 2.
    H. D. Morrison, F. Y. Chu et al., “Decomposition of SF6 and production of S2F10 in power arcs”, 7th Internat. Sympos. on Gaseous Dielectrics, Knoxville TE, 1994Google Scholar
  3. 3.
    J.T. Herron, “S2F10 Formation in Computer Simulation Studies of the Breakdown of SF6”, IEEE Trans. Elec. Insul., Vol. EI-22, No. 4, pp. 523–525, (1987).CrossRefGoogle Scholar
  4. 4.
    R.J. Van Brunt, J.K. Olthoff, and Manish Shah, “Rate of S2F10 Production from Negative Corona in Compressed SF6”, Conference Record of the 1992 IEEE Int. Symp. Elec. Insul., June 7–10, 1992, Baltimore, IEEE Pub. No. 92CH3150-0, pp. 328-331, 1992Google Scholar
  5. 5.
    I. Sauers and S.M. Mahajan, and R. Cacheiro, “Production of S2F10, S2OF10, and S2O2F10 by spark discharges in SF6”, 7th Internat. Sympos. on Gaseous Dielectrics, Knoxville TE, 1994Google Scholar
  6. 6.
    I. Sauers, S. M. Mahajan, et al., “Effect of solid insulator on the spark yield of S2F10 in SF6”, 1994 IEEE Intern. Sympos. on Electr. Insul., Pittsburgh PA, 1994Google Scholar
  7. 7.
    H. D. Morrison, V. P. Cronin et al., “Production and decay of S2F10 in a disconnect switch”, 7th Internat. Sympos. on Gaseous Dielectrics, Knoxville TE, 1994Google Scholar
  8. 8.
    J.T. Herron and Wing Tsang, “Formation and Stability of SF5 and S2F10”, 5th Intern. Sympos. on Gaseous Dielectrics, Knoxville, 199 (1987)Google Scholar
  9. 9.
    J.T. Herron, “A Critical Review of the Chemical Kinetics of SF4, SF5, and S2F10 in the Gas Phase”, Int. J. Chem. Kinet., Vol. 19, pp. 129–142, 1987.CrossRefGoogle Scholar
  10. 10.
    M. Piemontesi, R. Pietsch, and W. Zaengl, “Analysis of Decomposition Products of Sulphur Hexafluoride in Negative DC Corona with Special Emphasis on Content of H2O and Q2”, IEEE Internat. Sympos. on Electr. Insulation. Pittsburgh 1994Google Scholar
  11. 11.
    J.K. Olthoff, R.J. Van Brunt, J.T. Herron, I. Sauers, and G. Harman, “Catalytic Decomposition of S2F10 and Its Implication on Sampling and Detection from SF6-Insulated Equipment”, Conference Record of the 1990 IEEE International Symposium on Electrical Insulation, Toronto, June 3–6. 1990, IEEE Pub. No. 90-CH2727-6, pp. 248-252Google Scholar
  12. 12.
    G. Basile, private communicationGoogle Scholar
  13. 13.
    M. Piemontesi, private communicationGoogle Scholar
  14. 14.
    A.M. Casanovas, J. Casanovas et al., “Study of the decomposition of SF6 under negative polarity corona discharge (point to plane geometry): influence of the metal constituting the plane electrode”, J. Appl. Phys. 72, 3344 (1992)ADSCrossRefGoogle Scholar
  15. 15.
    I. Sauers, M. Siddanagupta et al., “Production and stability of S2F10 in SF6 corona discharges”, 6th ISH, New Orleans (1989) 23.08Google Scholar
  16. 16.
    CIGRE WG 33/13-09, “Very fast transient phenomena associated with gas insulated substations”, CIGRE (1988) paper 33-13.Google Scholar

Copyright information

© Springer Science+Business Media New York 1994

Authors and Affiliations

  • Lutz Niemeyer
    • 1
  1. 1.ABB Corporate Research CenterBadenSwitzerland

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