The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis on the Protective Coordination with Hybrid Superconducting Fault Current Limiter

저항접지 시스템에서 지락사고시 CLR과열 소손방지를 위한 GPT 정격용량의 적정성 연구

  • 신호전 (숭실대 공대 전기공학부) ;
  • 김진석 (숭실대 공대 전기공학부) ;
  • 박유환 (숭실대 공대 전기공학부) ;
  • 김재철 (숭실대 공대 전기공학부) ;
  • 조만영 (숭실대 공대 전기공학부)
  • Received : 2011.12.28
  • Accepted : 2012.03.06
  • Published : 2012.04.01
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Abstract

Among the high distribution voltage consumers, high-capacity consumers are often applying the grounding resistance method in order to overcome demerits such as erroneous operation of the ground reply or potential increase in the battery at the accident of the isolated neutral system. In this paper, to prevent damage to CLR and GPT in the delay to block the breakdown in the resistance grounded neutral system, this study aims to provide a proper suggestion for continuous rating capacity of GPT to check the appropriateness of CLR size and reduce GPT burden. Thereupon, this study comparatively analyzes CLR current applied in general GPT and the current gained when CLR demanded in the system is used and analyzes the simulated system through simulation using PSCAD/EMTDC in order to suggest GPT's proper continuous rating capacity.

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References

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