Electricity: conductors and insulators – Conduits – cables or conductors – Conductor structure
Patent
1980-11-12
1982-10-26
Mayewsky, Volodymyr Y.
Electricity: conductors and insulators
Conduits, cables or conductors
Conductor structure
174128R, H01B 510
Patent
active
043563465
ABSTRACT:
A transmission conductor comprises an inner conductor or conductors substantially shaped in a cylindrical form, and an outer conductor layer covering the inner conductor or conductors, the outer conductor layer being annular in section, having an even outer surface and being split in a plane or planes radially extending on the center of the transmission conductor into a plurality of split conductor elements. Outer corners of the two adjacent split conductor elements at every predetermined number of junctions between the plurality of split conductor elements are formed in rounded corners, i.e. arcuate in section, with a radius r (m) of curvature. These plurality of split conductor elements disposed annularly on the outer surface of the inner conductor or conductors are stranded in the longitudinal direction. Thus, a plurality of grooves are formed on the outer surface of the outer conductor layer extending in the stranded longitudinal direction between the rounded corners of the two adjacent split conductor elements. The sectional geometry of the grooves is selected to achieve a low wind pressure transmission conductor or a low wind singing transmission conductor. In the case of a low wind pressure conductor, the radius r of curvature is selected to be ##EQU1## where V (m/sec) is a wind velocity, and .theta. (degree) is the angle between two adjacent grooves with respect to the center of the transmission conductor. On the other hand, in the case of a low wind singing transmission conductor, the geometry of the grooves is selected to satisfy 10.multidot.r/D+log.theta.>2.55, where D(m) is the diameter of the transmission conductor.
REFERENCES:
patent: 3445586 (1969-05-01), Edwards et al.
patent: 3760093 (1973-09-01), Pemberton
patent: 3813772 (1974-06-01), Adams
patent: 3823542 (1974-07-01), Pemberton
Kansai Electric Power, Ltd.
Mayewsky Volodymyr Y.
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