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Mathematical morphology‐based single phase‐to‐ground fault feeder selector for a resonant grounded distribution system
Author(s) -
Han X. L.,
Wu Q. H.,
Li M. S.,
Zhang L. L.
Publication year - 2018
Publication title -
ieej transactions on electrical and electronic engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.254
H-Index - 30
eISSN - 1931-4981
pISSN - 1931-4973
DOI - 10.1002/tee.22596
Subject(s) - closing (real estate) , fault (geology) , transient (computer programming) , mathematical morphology , filter (signal processing) , symmetrical components , phase (matter) , component (thermodynamics) , sequence (biology) , engineering , electronic engineering , control theory (sociology) , topology (electrical circuits) , computer science , electrical engineering , voltage , physics , artificial intelligence , geology , biology , law , image (mathematics) , image processing , transformer , genetics , operating system , quantum mechanics , political science , thermodynamics , seismology , control (management)
In this letter, we present a new single phase‐to‐ground fault feeder selector for a resonant grounded distribution system based on mathematical morphology. A combined morphological filter, which is the average of open–closing and close–opening, is employed to extract the transient component and decaying DC component from the zero‐sequence current signal of each feeder. Afterward, two indices are introduced to measure these components and to distinguish the fault feeder from healthy feeders. Simulation studies are conducted using PSCAD/EMTDC, and the results verify the effectiveness of the proposed method. © 2018 Institute of Electrical Engineers of Japan. Published by John Wiley & Sons, Inc.