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Evaluation of audible noise from surface processing conductors for AC overhead transmission line
Author(s) -
Miyajima Kiyotomi,
Tanabe Kazuo
Publication year - 2007
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/eej.20509
Subject(s) - electrical conductor , conductor , noise (video) , electric power transmission , electrical engineering , corona discharge , overhead (engineering) , materials science , corona (planetary geology) , transmission line , overhead line , durability , acoustics , voltage , electronic engineering , engineering , computer science , physics , composite material , image (mathematics) , artificial intelligence , astrobiology , venus
Corona discharge may cause audible noise, and it is frequently generated from wet conductors of high‐voltage AC overhead transmission lines. Audible noise arises more easily from new conductors that have lubricating oil on their surface than from aged conductors. In this paper, the corona characteristics, particularly the audible noise, of conductors having various wetting properties are presented for the purpose of developing a corona‐free conductor for AC overhead transmission lines. It was found that a conductor having a super‐hydrophobic surface exhibited a minimized audible noise level, but it does not have sufficient durability for practical applications. Furthermore, a conductor having a super‐hydrophilic surface made by thermal spraying of TiO 2 showed good performance regarding the suppression of audible noise. The thermal spraying of TiO 2 seems to be an effective processing technique that has sufficient durability for practical applications. © 2007 Wiley Periodicals, Inc. Electr Eng Jpn, 159(3): 19–25, 2007; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/eej.20509