Bus acceleration protection device based on switching value mode

The invention relates to a bus acceleration protection device based on a switching value mode, which comprises a medium-voltage system bus and an acceleration protection device, the medium-voltage system bus is respectively connected with a working power supply and a motor load through lines, and a connecting line is respectively provided with a working power supply incoming line switch and a load power supply switch; the acceleration protection device is composed of a working incoming line switch microcomputer protection device, a load switch microcomputer protection device, a switching value acquisition miniature bus and a switching value signal acquisition module, one end of the load switch microcomputer protection device is connected with the switching value acquisition miniature bus through a line, and the other end of the load switch microcomputer protection device is connected with a load power switch through a line. One end of the working incoming line switch microcomputer protection is connected with