Gequan Mine east shaft 35 kV substation was responsible for the power supply of the mine, which was related to the production safety of the entire mine, however, the 35 kV substation with a low level of intelligent operation and with possible mishandle. After the transformation of the microcomputer five-proof analog screen technology, detailed instructions for the whole operation process were made to ensure that the operator corrected every step of the operation, improved the intelligence of the operation, and eliminated the safety hazards in production.