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Analysis of one‐line ground fault surge on simulated overhead distribution line
Author(s) -
Kikuchi Tatsuo,
Yoshimi Masashi,
Hikosaka Tomoyuki,
Matsumoto Toshio
Publication year - 1997
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/(sici)1520-6416(19970115)118:1<52::aid-eej5>3.0.co;2-m
Subject(s) - electrical engineering , fault (geology) , waveform , ground , line (geometry) , engineering , overhead line , voltage , transient (computer programming) , fault indicator , power (physics) , electronic engineering , computer science , fault detection and isolation , physics , geology , mathematics , seismology , geometry , quantum mechanics , actuator , operating system
One‐line fault location techniques of intermittent ground fault points on nongrounded distribution lines are necessary to supply steady electric power for customers. This paper proposes a novel method that uses frequency spectra of transient waveforms at a sending end when an intermittent ground fault occurs. In this method, if a ground fault position differs, it causes a different frequency spectrum pattern for the current or voltage transients at a send end (decided by surge reflection phenomena between the sending end and the ground fault point). Comparison between experimental data of one‐line ground fault tests on a simulated overhead line (373 m line length, two branch points) and digital simulation analyses shows that the grounded capacitance of a power source transformer was useful in locating the ground fault point. © 1997 Scripta Technica, Inc. Electr Eng Jpn, 118 (1): 52–60, 1997