电力系统直流接地故障探测方法的探讨

Discussion of Probe Method of Power Direct Current Earthing Fault

对电力系统直流接地故障检测方法进行了全面综述 ,讨论了传统的注入交流信号法、漏电流检测法等的优点和不足。在此基础上 ,着重介绍了一种全新的专利方法 ,该方法克服了其它各种方法的不足之处 ,显著提高了故障电阻检测的精度和接地故障点探测的准确度 ,完全满足各种现场的实际需要。

All methods of measuring fault grounding resistance and detecting of fault grounding point in DC power systems are outlined in this paper.The advantages and disadvantages of the methods such as applying low frequency as signal,measuring leakage current and so on are discussed in detail.Based on the discussing,a new patent method was introduced which overcame all the drawbacks of other method and greatly enhanced the precision and accuracy of fault grounding resistance measuring and fault grounding point detecting.