대한전기학회논문지:전력기술부문A (The Transactions of the Korean Institute of Electrical Engineers A)

대한전기학회 (The Korean Institute of Electrical Engineers)
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송전 선로의 사고 거리에 따른 특성 주파수 해석

Analysis of Characteristic Frequency along Fault Distance on a Transmission Line

  • 남순열 (효성중공업 연구소) ;
  • 홍정기 (효성중공업 연구) ;
  • 강상희 (명지대학교 전기공학과/차세대 전력기술 연구센) ;
  • 박종근 (서울대학교 전기공학부)
  • 발행 : 2004.08.01
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초록

Since the characteristic frequency is decreased in proportion to the fault distance, the characteristic frequency component may be insufficiently eliminated by a low-pass filter on a long transmission line. In order to set a standard for the cut-off frequency of the low-pass filter, this paper proposes a method for obtaining the characteristic frequencies due to line faults. The application results of the proposed method are presented for line to ground (LG) faults and line to line (LL) faults on a 345 kV 200 km overhead transmission line. The EMTP is used to generate fault signals under different fault locations and fault inception angles. By comparison between the characteristic frequencies obtained from the proposed method and the EMTP simulation, it is shown that the proposed method accurately obtains the characteristic frequency.

키워드

참고문헌

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