Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Current Limiting and Voltage Sag Suppressing Characteristics of Flux-lock Type SFCL According to Variations of Turn Number's Ratio

자속구속형 초전도전류제한기의 권선비 변화에 따른 전류제한 및 전압강하 보상 특성

  • Han, Tae-Hee (Department of Energy Resources Engineering, Jungwon University) ;
  • Lim, Sung-Hun (Department of Electrical Engineering, Soongsil University)
  • 한태희 (중원대학교 에너지자원공학부) ;
  • 임성훈 (숭실대학교 전기공학과)
  • Received : 2010.11.15
  • Accepted : 2011.03.25
  • Published : 2011.05.11
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Abstract

In this paper, we investigated the fault current limiting and the load voltage sag suppressing characteristics of the flux-lock type SFCL, designed with the additive polarity winding, according to the variations of turn number's ratio and the comparative analysis between the resistive type and the flux-lock type SFCLs were performed as well. From the analysis for the short-circuit tests, the flux-lock type SFCL designed with the larger turn number's ratio was shown to perform more effective fault current limiting and load voltage sag suppressing operations compared to the flux-lock type SFCL designed with the lower turn number's ratio through the fast quench occurrence of the high-$T_C$ superconducting (HTSC) element comprising the flux-lock type SFCL. In addition, the recovery time of the flux-lock type SFCL after the fault removed could be confirmed to be shorter in case of the flux-lock type SFCL designed with the lower turn number ratio.

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References

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