On-load voltage regulation switching device of power distribution network

The invention provides a power distribution network on-load voltage regulation switching device, and belongs to the field of power system on-load voltage regulation switching devices, and the device comprises a vacuum permanent magnet change-over switch which is used for carrying out on-load gear switching in a vacuum arc extinguish chamber, and completing the on-load switching function of a switch upshift or downshift tap; the control system is used for realizing on-site manual and remote control of upshift and downshift of the switch and setting, displaying, protecting and alarming functions; and the tap selector is used for switching on or off the adjacent upper tap and lower tap under the condition of no working current so as to realize the tap selection function of the upshift or downshift operation of the switch. According to the invention, barrier-free switching of adjacent gears of the high-voltage on-load voltage regulation switching device is specifically realized by adopting the four vacuum arc ext