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Wave propagation characteristics on an overhead conductor above snow
Author(s) -
Ametani Akihiro,
Nagaoka Naoto,
Koide Ryuji
Publication year - 2001
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 - 10.1002/1520-6416(200102)134:3<26::aid-eej4>3.0.co;2-u
Subject(s) - snow , conductor , attenuation , mechanics , electrical impedance , materials science , physics , optics , meteorology , electrical engineering , engineering , composite material
This paper develops a shunt admittance formula of an overhead conductor above snow by adopting the Hertz vector. Based on the formula, the effect of snow on the wave propagation characteristics of the conductor is investigated. The admittance is increased by the snow. The difference from the case of no snow becomes smaller as the frequency becomes higher, because the permittivity of the snow reaches unity as the frequency increases. The effect of snow on the attenuation constant increases and that on the propagation velocity and characteristic impedance decreases, as the frequency increases. The difference from the no‐snow case in the attenuation constant, the velocity, and the step response of wave deformation increases as the snow depth, the density, and the temperature increase. The characteristic impedance depends on the snow depth but not on the density and the temperature. © 2000 Scripta Technica, Electr Eng Jpn, 134(3): 26–33, 2001