By Topic

An approach using wavelet transform for fault type identification in digital relaying

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Silveira, P.M. ; Dept. of Electr. Eng., Fed. Eng. Sch., Itajuba, Brazil ; Seara, R. ; Zurn, H.H.

This paper proposes the use of wavelet transform (WT) in power transmission lines for identifying fault types. WT multiresolution properties are quite adequate for detection of fast changes contained in the disturbed signal. Wavelet decomposition associated with modal components have shown to be an excellent alternative for quick identification of faulted phases. Digitized phase voltage and/or current signals are fed to wavelet filters. The coefficients obtained are then transformed by a modified modal transformation matrix. From the resulting signals, the energy is measured with short time intervals. With an appropriately chosen threshold the fault type is identified. EMTP simulations are used to test and validate the proposed methodology. The obtained results are encouraging and the proposed technique requires a low computational complexity, allowing it to be used as part of a high speed protective relay

Published in:

Power Engineering Society Summer Meeting, 1999. IEEE  (Volume:2 )

Date of Conference: