Research on the relay protection method of special vehicle DC power distribution system based on SG filter

With the increasing complexity and precision of special vehicle system structure, the efficiency and accuracy of fault diagnosis of on-board DC distribution networks are facing challenges. The complexity and particularity of the DC distribution network make it face many challenges, such as electrical failure, overcurrent, undervoltage, and other problems, which may have a serious impact on the safe and stable operation of special vehicles. Therefore, developing a set of fault identification and protection methods for special vehicle DC distribution network circuits is urgently needed. This paper presents the relay protection method of a special vehicle DC distribution system based on the Savitzky-Golay filter, studies the fault problem of a special vehicle transmission line, constructs the relay protection method of a special vehicle DC transmission system, and realizes the fault identification and protection of the special vehicle DC distribution system.