• DocumentCode
    2793130
  • Title

    Effects of organic additives on corona current in SF6

  • Author

    Ijumba, N.M.L.

  • Author_Institution
    Dept. of Electr. & Electron. Eng., Nairobi Univ., Kenya
  • fYear
    1991
  • fDate
    8-12 Jul 1991
  • Firstpage
    392
  • Abstract
    The effect of Freon 113 additives (1%-10%) on DC corona current in SF6 is investigated in a 20 mm point-plane gap, in the pressure range 0.1-0.2 MPa. Freon 113 is found to reduce corona current, the effect increasing with Freon content. The observed effect is attributed to increased electron attachment and reduction in ion mobility in the mixtures. The results obtained are discussed in terms of known streamer corona models in SF6, and chemical and physical properties of Freon 113. It is suggested that the observed effect might be related to the high attachment cross-section of Freon 113, and its ability to form stabler and heavier negative ions
  • Keywords
    corona; electron attachment; gaseous insulation; sulphur compounds; 0.1 to 0.2 MPa; Freon 113 additives; SF6; corona current; electron attachment; ion mobility; negative ions; point-plane gap; streamer corona models; Additives; Breakdown voltage; Chemicals; Corona; Current measurement; Electrodes; Electron mobility; Optical propagation; Propagation delay; Sulfur hexafluoride;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Properties and Applications of Dielectric Materials, 1991., Proceedings of the 3rd International Conference on
  • Conference_Location
    Tokyo
  • Print_ISBN
    0-87942-568-7
  • Type

    conf

  • DOI
    10.1109/ICPADM.1991.172080
  • Filename
    172080
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2793130