Journal of the Korean Institute of Illuminating and Electrical Installation Engineers (조명전기설비학회논문지)

The Korean Institute of IIIuminating and Electrical Installation Engineers (한국조명전기설비학회)
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Analysis on Operational Characteristics of Distance Relay due to Application of Superconducting Fault Current Limiter in a Simulated Power Transmission System

모의 송전계통에 초전도한류기의 적용에 따른 거리계전기의 동작특성 연구

  • 노신의 (숭실대학교 공대 전기공학과) ;
  • 김진석 (숭실대 대학원 전기공학과) ;
  • 김이관 (숭실대 대학원 전기공학과) ;
  • 김재철 (숭실대학교 공대 전기공학과) ;
  • 임성훈 (숭실대학교 공대 전기공학과)
  • Received : 2013.10.10
  • Accepted : 2014.07.10
  • Published : 2014.08.31
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Abstract

The development of the superconducting fault current limiter (SFCL) to apply into a power transmission system where makes larger fault current compared to the power distribution system has been performed. Among various SFCLs, the trigger-type SFCL is suitable for application into the power transmission system due to the effective reduction on power burden of the high temperature superconducting element (HTSC) for the larger fault current. To protect the power transmission line in the power grid, the distance relay, which decides to interrupt fault section where can be calculated by the measured voltage and current from sound grid, is one of important protective devices in the power transmission system. However, the operation of the distance relay from the impedance of the fault point on the transmission line is affected by the impedance of the trigger-type SFCL. Therefore, the analysis on the operational characteristics of distance relay considering the application of the SFCL is required. In this paper, the effect on the operation zones of the distance relay by the impedance of the SFCL in a power transmission system was analyzed through the PSCAD/EMTDC simulation.

Keywords

References

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