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

The Korean Institute of Electrical Engineers (대한전기학회)
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A Fault Indicator Generation Algorithm using Phase Angle of Zero-Sequence Current in Ungrounded System

비접지 계통에서 영상전류 위상을 이용한 고장표시 생성 알고리즘

  • 임희택 (명지대학 공대 전기공학과) ;
  • 임일형 (명지대학 공대 전기공학과) ;
  • 최면송 (명지대학 공대 전기공학과) ;
  • 이승재 (명지대학 공대 전기공학과)
  • Published : 2008.07.01
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Abstract

Most faults are single-phase-to-ground fault in ungrounded system. The fault currents of single-phase-to-ground are much smaller than detection thresholds of measurement devices, so detecting single-phase-to-ground faults is difficult and important in ungrounded system. This paper proposed to a FI(Fault Indicator) generation algorithm in ungrounded system. The algorithm just using line-to-line voltage and zero-sequence current detects fault line, fault phase, fault section and FI(Fault Indicator) at terminal device, This paper also proposed to application plan for this algorithm. In the case study, the proposed algorithm has been testified in demo system by Matlab/Simulink simulations.

Keywords

References

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