Advertisement

PD Inception and Breakdown Voltage Characteristics in PFC and SF6 gas mixtures

  • Shinya Ohtsuka
  • Masaki Koumura
  • Kazuhisa Eguchi
  • Mengu Cho
  • Sadayuki Yuasa
  • Shigemitu Okabe
  • Masayuki Hikita

Abstract

Since SF6 gas has excellent properties like a high dielectric strength, and is chemically inert, nontoxic, and so on, it has been widely used as an insulation material for gas insulated switchgears (GIS) and insulated transmission lines (GIL)(1,2). However, SF6 gas is a potent green house gas and its global warming potential (GWP) is estimated as a very large at 23,900. Accordingly, SF6 gas was designated as one of the emission gases to regulate at COP3. It is necessary to decrease the use of SF6 gas, design techniques to retrieve SF6 gas and reduce its emission into the atmosphere and develop alternative gases having much lower GWP values. SF6/N2 gas mixtures have been proposed as a promising alternative to SF6. To date, the authors have shown that adding a small amount of CO2 to an SF6/N2 gas mixture results in a prominent increase in the insulation performance under both uniform and nonuniform electric fields(2,3).

Keywords

Global Warming Potential Breakdown Strength Nonuniform Field Molecular Weight Dependence Positive Half Cycle 
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.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. (1).
    L.G.Christophorou, et al.:“SF6/N2 Mixtures Basic and HV insulation properties”, IEEE Trans, on DEI, Vol.2, No.5, pp.952–1003 (1995)CrossRefGoogle Scholar
  2. (2).
    S.Ohtsuka, et al.:“Effect of mixture of a small amount of CO2 in SF6/N2 mixed gas on the insulation performance under nonuniform field”, Proc. of IEEE ISEI 2000, pp.288–291 (2000)Google Scholar
  3. (3).
    S.Ohtsuka, et al.: “ Insulation properties of CO2/N2 gas mixtures with a small amount of SF6”, Proc. of Gaseous Dielectrics IX (2001)Google Scholar
  4. (4).
    D.R.James, et al.:“Dielectric strengths of new gases and gas mixtures”, Gaseous Dielectrics I, pp.224–257,(1978)Google Scholar
  5. (5).
    J.C.Devins:“Replacement gases for SF6”, IEEE Trans. on EI Vol.15, No.2, pp.81–86 (1980)Google Scholar

Copyright information

© Springer Science+Business Media New York 2001

Authors and Affiliations

  • Shinya Ohtsuka
    • 1
  • Masaki Koumura
    • 1
  • Kazuhisa Eguchi
    • 1
  • Mengu Cho
    • 1
  • Sadayuki Yuasa
    • 2
  • Shigemitu Okabe
    • 1
  • Masayuki Hikita
    • 1
  1. 1.Kyushu Institute of TechnologyKitakyushuJapan
  2. 2.Tokyo Electric Power Co., Inc.YokohamaJapan

Personalised recommendations