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Content Provider | IEEE Xplore Digital Library |
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Author | Brahma, S.M. |
Copyright Year | 2006 |
Description | Author affiliation: Dept. of Electr. Eng., Widener Univ., Chester, PA (Brahma, S.M.) |
Abstract | Out of step blocking function in distance relays is required to distinguish between a power swing and a fault. Detection of symmetrical faults during power swings can present a challenge. In cases when the values of the apparent impedances seen by a distance relay before and after a three-phase fault during a power swing are very close, most of the proposed schemes can run into problems. If such values fall into zone-1 of the relay, not only the detection, but the speed of detection is also crucial. This paper introduces wavelet analysis to detect power swings as well as reliably and quickly detect a symmetrical fault during a power swing. Total number of dyadic wavelet levels of voltage/current waveforms and the choice of particular levels for such detection are carefully studied. Different power swing conditions and fault instants are simulated with PSCAD/EMTDCreg software to test the proposed methodology |
File Size | 467148 |
File Format | |
ISBN | 1424404932 |
DOI | 10.1109/PES.2006.1709171 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2006-06-18 |
Publisher Place | Canada |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Protective relaying Voltage Frequency Impedance Fault detection PSCAD Power system relaying Fluctuations Relays Wavelet analysis Distance relay Power swing Symmetrical fault |
Content Type | Text |
Resource Type | Article |
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