【摘要】 线路避雷器在雷电活动强烈、降低杆塔接地电阻困难的特殊线段上使用 ,可有效提高输电线路的耐雷水平。耐雷水平的提高与线路避雷器的安装方式和安装组数有关 ,且应尽量降低杆塔的冲击接地电阻。线路避雷器仅能保护安装了线路避雷器的杆塔自身的线路绝缘子 (串 )不发生雷击闪络 ,无外延的雷击保护范围。更多还原

【Abstract】 The line arresters used in special sections with severe lightning activity and difficulty to reduce the ground resistance of towers can improve effectively the lightning-proof level of transmission lines. The lightning-proof level is related to installation mode of line arresters and installed groups. The impact ground resistance of the towers should be lowered as possible. The line arresters can only protect the line insulators on the tower equipped with the line arresters from lightning flash and they have no extended protective range.更多还原