Method for automatically cutting off low-voltage reverse power transmission of power distribution network

The invention discloses a method for automatically cutting off low-voltage reverse power transmission of a power distribution network. The method comprises the following steps: setting a button switchto be in an off state; connecting a public power grid line with a wiring position corresponding to the button switch; when a public power grid supplies power, closing the button switch, and forming an electromagnet in the coil, so that the moving contact descends to be in contact with the static contact, and connecting a circuit; and when the public power grid is powered off, enabling the electromagnet formed in the coil to disappear, wherein the moving contact rises and is separated from the static contact, and the circuit is disconnected. The circuit can be automatically disconnected when the public power grid is powered off, the circuit is connected when power supply is recovered, automatic control over the circuit is achieved, the situation of reverse power transmission caused by untight manual management and