Local module configuration-free method for auxiliary equipment of intelligent substation

A local module device for auxiliary equipment of an intelligent substation takes a CPU (central processing unit) board card as a core and communicates with a first functional board card, a second functional board card and a man-machine board card with keys and nixie tubes through a CAN (controller area network). According to the local module configuration-free method for auxiliary equipment of the intelligent substation, data communication is carried out through the CAN and the CPU board card based on a nixie tube and key encoding and decoding of the man-machine board card. The configuration-free mode of a third-generation intelligent substation is achieved, engineering debugging is easy, the engineering efficiency is improved, the advantages of a traditional substation, an intelligent substation and a new-generation intelligent station are comprehensively inherited, performance is improved on the basis, intelligent debugging, operation and maintenance of in-situ module products of auxiliary control equipment