Device for preventing transformer substation from entering interval by mistake

The invention discloses a device for preventing a transformer substation from entering an interval by mistake. The device comprises a transformer box, a warning mechanism and a locking mechanism, the left end and the right end of the front surface of the power transformation box are hinged to power box doors through symmetrically-distributed hinges, handles are arranged on the front surfaces of the power box doors, a high-voltage power distributor, a transformer and a low-voltage power distributor are sequentially arranged in the power transformation box from right to left, and the transformer is electrically connected with the high-voltage power distributor and the low-voltage power distributor through wires. A shield box is arranged at the upper end of the front surface of the electric box door on the right side, and a swing groove is formed in the top wall of the shield box. The warning mechanism is arranged in the protective cover box, and the warning mechanism is connected with the swinging groove in a s