Relay protection outlet lockout circuit

The invention provides a relay protection outlet lockout circuit which comprises a master controller, a lockout controller, a first outlet power supply relay, a second outlet power supply relay and an outlet relay. The master controller is connected with the lockout controller and the first side of the control end of the first outlet power supply relay. The second side of the control end of the first outlet power supply relay is connected with a power supply of the outlet relay. The first node of the first outlet power supply relay is connected with the power supply of the outlet relay. The second node of the first outlet power supply relay is connected with the node of the second outlet power supply relay. The control end of the second outlet power supply relay is connected with the lockout controller and a system power supply of the lockout controller. The node of the second outlet power supply relay is connected with the first side of the control end of the outlet relay. The second side of the control end of the outlet relay is connected with the master controller. The probability that the master controller controls the outlet relay to output error signals is lowered, and the electrical power system stability is improved.