Research on Insulation Monitoring Technology of DC System Based on Bridge Method

DC insulation monitoring system is an important part of the train DC system, which plays a significant role in the safe and reliable operation of the equipment in the train. This paper mainly focuses on the research of DC system insulation monitoring technology on the train, summarizes the application principle of balanced bridge and unbalanced bridge method in DC monitoring system and discusses the advantages and disadvantages, and designs a new type of DC insulation monitoring method, which provides a technical basis for the design and manufacture of insulation monitoring device with good performance.