【摘要】 雷击直埋通信电缆产生的过电压危害非常严重。通过模拟实验 ,测量了大地遭雷击时不同电缆埋深和土壤电阻率等情况下电缆中的感应过电压。为降低电缆上雷电感应过电压 ,可采用增加电缆埋深 ,降低土壤电阻率 ,电缆套装铝管和在电缆上方敷设排流铝管或绝缘隔板等方法。这些措施可供雷电通道的仿真模型参考更多还原

【Abstract】 When lightning strikes a direct buried communication cable, the over voltage produced on the cable is inevitable. Disasters caused by over voltage are very serious. The over voltage on the cable in an indoor simulation experimental system is measured and its regulation is analyzed in order to advance suitable protection schemes. Furthermore, a true model of imitation of lightning channel will be established on the experiment basis later.更多还原