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

The Korean Institute of Electrical Engineers (대한전기학회)
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Fault Location Estimation for High Impedance Fault using Wavelet Transform

Wavelet 변환을 이용한 고저항 지락사고 고장점 추정

  • 김현 ((주)우리기술 중앙연구소) ;
  • 김철환 (성균관대 전기전자 및 컴퓨터공학부·)
  • Published : 2000.08.01
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Abstract

High impedance fault(HIF) is defined as a fault that the general overcurrent relay can not detect or interrupt. Especially when HIF occurs in residential areas, energized high voltage conductor results in fire hazard, equipment damage or personal threat. This paper proposes a fault location estimation algorithm for high impedance fault using wavelet transform. The algorithm is based on the wavelet analysis of the fault voltage and current signals. The performance of the proposed algorithm is tested on a typical 154kV korean transmission line system under various fault conditions. From the tests presented in this paper it can be concluded that a fault location estimation algorithm using wavelet transform can precisely calculate the fault point for HIF.

Keywords

References

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