Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Influence Regularity of Aluminum, Copper and Stainless-steel on SF6 PD Decomposition Characteristics Components

  • Zeng, Fuping (School of Electrical Engineering, Wuhan University) ;
  • Luo, Jing (School of Electrical Engineering, Wuhan University) ;
  • Tang, Ju (School of Electrical Engineering, Wuhan University) ;
  • Zhou, Qian (State Grid Chongqing Electric Power Company) ;
  • Yao, Qiang (State Grid Chongqing Electric Power Company)
  • Received : 2016.08.13
  • Accepted : 2016.10.22
  • Published : 2017.01.02
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Abstract

$SF_6$ decomposition products can be used to detect partial discharge (PD), but the metal materials in a PD area can significantly affect $SF_6$ decomposition characteristics. Disregarding the effect of metal materials on such characteristics inevitably result in certain errors when using them to diagnose the internal insulation faults of gas-insulated switchgears. This paper investigates the influence regularity on the main stable decomposition components of $SF_6$ (namely $SO_2F_2$ and $SOF_2$) of the commonly metal materials uesd in GIS, such as aluminum (Al), copper (Cu) and stainless steel (SS). Firstly, an experimental platform is constructed to simulate $SF_6$ decomposition under a PD area, and the influence regularities of Al, Cu and SS on the concentration, formation rate and saturation time of $SO_2F_2$ and $SOF_2$ are obtained. Secondly, the influence mechanism of Al, Cu and SS are preliminary explored combined with the chemical activity of the metal materials.

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References

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