NDLI: A New Wavelet Transform Based Busbar Protection

Content Provider	IEEE Xplore Digital Library
Author	Gafoor, S.A. Ramana Rao, P.V.
Copyright Year	2006
Description	Author affiliation: Electr. Eng. Dept., Nat. Inst. of Technol., Warangal (Gafoor, S.A.; Ramana Rao, P.V.)
Abstract	This paper deals with application of wavelet transform for detection of busbar faults and to discriminate them from external faults. The detail coefficients of differential current and those of a source CT current are obtained over a narrow moving window. The fault indexes of both current signals obtained are compared with their respective threshold values to detect the internal faults. In the event of external faults the d-coefficients of differential current have a time shift compared to that of source current due to saturation of CT and this is used to discriminate the external faults from internal faults. The scheme is tested for different types of external and internal faults with variations in incidence angles and fault impedances. The proposed scheme is proved to be fast, stable and reliable in detecting the internal faults and discriminating them from external faults
Starting Page	1
Ending Page	4
File Size	3673825
Page Count	4
File Format	PDF
ISBN	1424405483
DOI	10.1109/TENCON.2006.344205
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-11-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wavelet transforms Power system protection Fault currents Circuit faults Power system transients Frequency Power system stability Fault detection Wavelet analysis Transient analysis
Content Type	Text
Resource Type	Article

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