A High Impedance Fault Detection Algorithm Using Wavelet Transform

Wavelet 변환을 이용한 배전 계통의 고 저항 사고 검출 알고리즘

  • Published : 1997.07.21

Abstract

This Paper presents a high impedance fault (HIF) detection algorithm of distribution systems using wavelet transform. Two HIFs on dry soil and sandy soil were simulated on various load conditions in 22.9 kV distribution systems using EMTP, and the current wavelets were decomposed by wavelet transform. The current root mean square(rms) change, the index change rate and the relative amplitude change were used as the multi-criteria for a HIF detection. The index change rate and the relative amplitude were made using the wavelet coefficients.

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