Low-voltage direct-current power supply on-load starting system and method

The invention discloses a low-voltage direct-current power supply on-load starting system and method, and the system comprises an insulating frame main body, one end of the insulating frame main body is provided with a mounting mechanism, during use, the insulating frame main body is hung on a frame connecting column in a sleeving manner, the position of the insulating frame main body is fixed through a sliding clamping lock, and a device is fixed at a position needing to work through a fixing rod; limiting bolts are flexibly and additionally arranged on the bearing plate according to the number and position of the workpieces needing to be electrified, heat generated in the working process is guided into the back space of the bearing plate through cooling fins, the heat is guided out through a fan, and wires are clamped into wire bunching grooves to be regularly placed. And the transparent frame cover is operated to rotate on the connecting door shaft, so that the clamping block is clamped with the insulating