A wavelet-based restricted earth-fault power transformer differential protection

Journal article (2021)

Authors

M. N.O. Aires Universidade Federal do Rio Grande do Norte
R. P. Medeiros Federal Rural University of the Semi-Arid
F. B. Costa Universidade Federal do Rio Grande do Norte
K. M. Silva Universidade de Brasélia
M. Popov Intelligent Electrical Power Grids - EEMCS
Research Group
Intelligent Electrical Power Grids (EEMCS) (TU Delft)
Copyright: © 2021 M. N.O. Aires, R. P. Medeiros, F. B. Costa, K. M. Silva, J. J. Chavez, M. Popov
DOI: https://doi.org/10.1016/j.epsr.2021.107246
More Info
expand_more

Published Date

2021

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

Intelligent Electrical Power Grids

Abstract

This paper proposes a restricted earth fault protection based on the wavelet transform (REFW) for detecting ground faults close to the transformer neutral point (turn-to-ground faults) and supporting the conventional phase differential protection, which presents limitations in this kind of faults. The proposed REFW protection uses only high-frequency components instead of phasor estimation, speeding up the detection of turn-to-ground faults. A performance comparison between the proposed wavelet-based restricted earth-fault differential protection and the respective conventional restricted earth-fault (REF) unit was accomplished considering simulated turn-to-ground faults, involving a few winding turns. The proposed method is more efficient and faster than the conventional one, reaching a success rate of 100%.

Files

1_s2.0_S0378779621002273_main.... (pdf)
(pdf | 1.97 Mb)
- Embargo expired in 01-11-2021
Unknown license