OPGW应用中雷击问题的探讨

目前在OPGW雷击断股的认识中，对于雷击形成的电弧造成断股、雷击电荷能量计算、试验判据和工程设计优化措施方面还存在一些模糊的认识。通过研究认为：雷击形成的电弧高温是造成断股的主要原因；给出了转移电荷的计算公式；对目前标准中雷击试验的判据提出了修改的具体要求；文章的最后针对工程设计，给出了具体的设计优化措施。

Discussion about the problem of lightning strike in OPGW application

At present, there are still some nebulous understanding problems when the lightning strikes to OPGW. For example the lightning strike causes the electric arc to make OPGW melting and broken, the calculation of lightning charge, the testing criterion and the optimize measure for engineering design. After studying we think that the high temperature caused by lightning arc is the main reason of OPGW melting and broken, then a formula for calculate lightning charge is suggested, give some requirements for modifying the test criterion of lightning test. At last the article gives some suggestions of the optimize measure for engineering design.