Title :
Melting and breaking characteristics of OPGW strands by lightning
Author :
Goda, Yutaka ; Yokoyama, Shigeru ; Watanabe, Shunsuke ; Kawano, Tadashi ; Kanda, Shinichi
Author_Institution :
Yokosuka Res. Lab., Central Res. Inst. of the Electr. Power Ind., Yokosuka, Japan
Abstract :
Some strands were melted and broken in a 140 mm2 OPGW (composite fiber-optic ground wire) in a 187 kV transmission line. It was assumed that this was caused by a lightning strike. DC arc tests simulating lightning strikes were carried out, and the melting and breaking characteristics of OPGW strands were obtained. The electric charge of the lightning strike that damaged the OPGW was estimated from the number of strands broken by the DC arc. In this paper, the DC arc test results, and the test conditions required to simulate a powerful lightning strike are described.
Keywords :
arcs (electric); lightning; melting; optical cables; power transmission lines; 187 kV; DC arc tests; OPGW strands breaking characteristic; OPGW strands melting characteristic; composite fiber-optic ground wire; lightning strike; transmission line; Accidents; Frequency; Laboratories; Lightning; Meteorology; Optical fiber cables; Optical fiber testing; Power transmission lines; Wind; Wires; Arc discharges; lightning; optical fiber cables; transmission lines;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2004.832410
