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电网技术  2006 

光纤复合架空地线的雷击断股机理与防治措施

, PP. 70-76

Keywords: 光纤复合架空地线,雷击,断股机理,防治措施,输电线路,避雷线

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Abstract:

针对我国光纤复合架空地线(opticalfibercompositeoverheadgroundwire,OPGW)断股时有发生的现状,有必要分析OPGW的断股机理并研究相应的防治措施。通过对我国OPGW断股情况的调查和对断股样品的微观分析得出了雷击造成OPGW断股的机理;按照标准进行雷击试验,分析了OPGW外层绞线单丝直径、绞线材料、雷击转移电荷库仑数、张力、雷电参数等因素对OPGW雷击断股的影响;通过模拟试验得出了避雷线接地方式与遭雷击概率的关系,根据雷击试验结果研制了2种耐雷型OPGW,通过计算并参照有关标准提出了OPGW发生断股损伤后的处理措施以及OPGW雷击断股的综合防治措施。

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