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Melting and breaking of 80 mm2 OPGWs by DC arc discharge simulating lightning strike

机译:直流电弧放电模拟雷击熔化和破碎80 mm2 OPGW

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Metal strands of OPGWs (composite fiber-optic ground wires) are sometimes melted and broken by high-energy lightning strikes. DC arc tests simulating lightning strikes have thus been performed to obtain their melting and breaking characteristics. In this paper, to clarify the characteristics of thin OPGWs, experiments and calculations on the melting and breaking of 80 mm2 OPGWs were performed for different strand types (23AC, 30AC). The calculated dependence of the flowing electric charge required for three strands to break on the strand type shows good agreement with the experimental values obtained in DC arc tests simulating a lightning strike.
机译:OPGW的金属线(复合光纤接地线)有时会因高能雷击而熔化并折断。因此,已经进行了模拟雷击的直流电弧试验以获得其熔化和断裂特性。在本文中,为弄清薄型OPGW的特性,针对不同的钢绞线类型(23AC,30AC)进行了80 mm2 OPGW熔化和断裂的实验和计算。计算出的三根股线断裂所需的流动电荷对股线类型的依赖性与模拟雷击的直流电弧试验中获得的实验值非常吻合。

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