A recursive wavelet transform analysis of earth fault currents in Petersen-coil-protected power distribution networks

17 December 2002

conference paper
Published by Institute of Electrical and Electronics Engineers (IEEE)

p. 162-165
https://doi.org/10.1109/tfsa.1994.467268

Abstract

Earth-phase faults are the most frequent faults likely to occur in a power distribution network. In the case of Petersen-coil-protected power networks, meaningful information is contained in the transient fault signals and should be used in the protections to increase their speed and accuracy. An earth-phase fault is simulated with EMTP (ElectroMagnetic Transient Program). Then, a recursive wavelet transform is applied on two kinds of fault currents that are the zero-sequence currents in the faulty feeder and in the healthy one. The instantaneous time-frequency information obtained may be useful for the design of a fast relay algorithm.

Keywords

This publication has 2 references indexed in Scilit:

Wavelets and signal processing
IEEE Signal Processing Magazine, 1991
The Petersen Earth Coil
Transactions of the American Institute of Electrical Engineers, 1922