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Preliminary investigation into the use of the cross Wigner-Ville distribution to detect high impedance earth faults in power systems

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3 Author(s)
Palmer, E. ; Sch. of Electr. & Electron. Syst. Eng., Queensland Univ., Brisbane, Qld., Australia ; Ledwich, G. ; Deriche, M.

This paper presents the results of a preliminary investigation into the viability of using the cross Wigner-Ville distribution (XWVD) in the detection of high impedance earth faults in power systems. High impedance earth faults are characterised an extremely low current with a time varying spectral characteristic superimposed on the mains current. It is shown that the XWVD provides a good identification of the extremely small high impedance arc fault current with signal to noise ratios as low as -10dB.

Published in:

Signal Processing and Its Applications, 2003. Proceedings. Seventh International Symposium on  (Volume:1 )

Date of Conference:

1-4 July 2003

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