Method and device for preventing error outlet of in-situ microcomputer relay protection device

The invention discloses a method and a device for preventing an error outlet of an in-situ microcomputer relay protection device. The technical problem to be solved is to improve the reliability of microcomputer relay protection. According to the method, double protection cores are arranged, each protection core is provided with a starting element and an action element, the starting element outputs an outlet enable signal and an outlet power supply signal, the action element outputs an outlet sign 1 signal and an outlet sign 2 signal, logic AND operation is carried out to obtain a protection total outlet sign signal, and the outlet enable signal, the outlet power supply signal and the total outlet sign signal are subjected to logic AND operation to obtain a tripping signal. According to the invention, the device is provided with a protection module and an outlet loop, the protection module is provided with double protection cores, each protection core is provided with a CPU chip, a field programmable logic ga