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Mechanical characteristics related to fault currents in bundle conductors
Author(s) -
Hanamura Makoto,
Kobayashi Takayuki,
Yoshida Kouji,
Serizawa Yasuo
Publication year - 1993
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.4391130606
Subject(s) - conductor , electrical conductor , tension (geology) , bundle , fault (geology) , structural engineering , flow (mathematics) , engineering , mechanics , electrical engineering , materials science , physics , composite material , geology , ultimate tensile strength , seismology
The flow of fault currents in bundled conductors induces an electromagnetic attraction between subconductors and thereby the bus conductor system to an extremely high level of tension. This tension, which is the most important factor in designing the mechanical strength of the system, is determined by a large number of parameters—the magnitude of the fault current, the size and number of the subconductors, spacer interval, the spring of the structure, and so on. Full‐scale 63‐kA class fault current tests were carried out on eight types of bus conductors used in 275‐and 500‐kV subconductors, and measurements of fluctuation in tension were used to clarify the relationship between the various parameters and maximum tension at fault time. A method also was devised for calculating maximum tension at fault time on the basis of the various parameters, and it has been applied in the mechanical strength design of the bus conductor system.