This paper aims to study the characteristics,monitoring and positioning technology and treatment strategy of direct current side short circuit fault in subway power supply system.By analyzing the causes and hazards of different types of short-circuit faults,the complexity and severity of the faults are revealed.At the same time,advanced monitoring and positioning technologies such as transient characteristics analysis of fault current and distributed optical fiber temperature measurement,as well as fault treatment measures such as quick tripping,energy absorption and optimized isolation are discussed.The research shows that the comprehensive application of advanced monitoring and positioning technology,fast and effective fault handling measures and the establishment of a perfect preventive maintenance system can significantly improve the safety and reliability of direct current side of subway power supply system.
subway power supply systemdirect current sideshort circuit faultmonitoring and positioningfault handling
NETL
NSTL
万方数据
