OPGW雷击可靠性研究

论述了OPGW雷击断股现象、断点分析及雷击断股原理，说明雷电先导形成的电弧高温是造成OPGW断股的外因，而OPGW股线(特别是铝合金线)的低熔点是造成断股的内因。通过确定一系列的雷电参数进行试验验证说明分析是正确的。最后提出除采用常规的防雷措施以外，主要应该通过改进OPGW的结构设计来提高OPGW的耐雷水平。

The discussion about the dependability of lighting strike OPGW

The paper discusses the phenomenon of lighting strike OPGW,analyzes rupture point and the principle of wire breakage because of lighting strike.It has shown that the lighting arc high-temperature which the thunder forms is the exterior reason of wire breakage,and the lower melting point of the wire(especially the AA wire)is the interior reason of wire breakage.By fixing on a series of lighting parameter and applying lighting arc test on OPGW,all of the tests have proved the above analysis is true.To improve the level of defending lighting,besides using conventional defending lighting measurement and up-to-date lighting conductor,we mainly should improve OPGW's construction design to advance the level of enduring lighting.