Abstract:In order to solve the problem of secondary equipment misoperation prevention in substations and realize the safety control of secondary equipment maintenance by technical means, this paper explores the secondary equipment misoperation prevention technology based on the Internet of things. The technical solution studied is to store the system data in the cloud, and realize the security control of the substation''s secondary equipment maintenance by authorizing smart keys through the mobile APP. The system includes secondary equipment maintenance safety management software, mobile phone APP, smart keys, mechanical unlock keys, smart security locks, locking accessories and safety warning signs, etc. When there is a maintenance task, the operator, according to the contents of the work ticket, authorizes the smart key through the mobile phone to lock the key points of the secondary equipment in the maintenance surface, and at the same time puts up a warning to prevent the accidental operation of the secondary equipment to cause maintenance accidents. Mobile phone authorization is required to open the lock during or after maintenance. The whole operation process is stored in the cloud, which can be inquired and controlled. This solution solves the problem of secondary equipment error prevention technology hardware locking, and realizes the security control based on the Internet of things.