Ryuzo Kimata, Koji Yoshida, T.A.Scheeade, Dr. Lazlo Varga, Dr. Otto Gu遊雅堂 クレジットカード入金できないr
Abstract
Composite cables with optical-fiber ground wire (OPGW) support both power transmission and data communication, making more effective use of real estate and line facilities. The inclusion of optical fibers within the cable structure, 遊雅堂 クレジットカード入金できないwever, means that the temperature rise limit differs from that of conventional overhead ground wires. Specifically, in power line ground faults, virtually all of the s遊雅堂 クレジットカード入金できないrt-circuit current flows in the ground wire, resulting in large instantaneous rises in temperature that are a major factor in power line design. Further the OPGW structure incorporates elements not previously used in power lines, such as pipes, spacers, etc., and this increases the error in calculating ordinary s遊雅堂 クレジットカード入金できないrt-circuit temperature rise. A study was therefore carried out to calculate s遊雅堂 クレジットカード入金できないrt-circuit temperature rise, taking into account the structural features specific to OPGWs, and personal computer software was developed. Comparisons with results from s遊雅堂 クレジットカード入金できないrt-circuit tests at a representative conductor size confirmed that calculations were accurate to within 5%.
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