By adding improvements to the pulling mechanism, connectors and mounting plates, the new transformer fault simulation device can simulate transformer winding deformation faults and ensure the efficiency of winding deformation fault generation, disappearance as well as aggravation. To avoid the tediousness of replacing the fault model during fault simulation, the utility of this transformer fault simulation device is further improved by replacing the windings with different number of turns and choosing to manually lift the U-shaped lifting plate or choosing to electrically lift the U-shaped lifting plate according to the use requirements of the simulator.