关键词: 电缆故障, 有效击穿, 高能信号, 能量

Abstract:

Underground cable faults often happen.In detecting the fault,especially for high resistance fault and open circuit fault detection,the high energy signals are usually used to puncture the fault point.However,it is difficult to judge whether the breakdown is effective or not.This paper firstly introduces the high energy signal generation,and then analyses the effective breakdown for coaxial cable and 10KV high voltage cable on the fault point.The breakdown voltage and the energy necessary of effective puncturing the cable fault point are obtained by calculation and tests.The results are verified by an engineering example.

Key words: cable fault;effective breakdown;high energy signal;energy