Synchronization detection complete equipment suitable for loop closing operation of distribution network

The utility model discloses a synchronism detection complete device suitable for distribution network closed loop operation, comprising a switch housing, the top of the switch housing is provided with a capacitive energy-taking power supply and a zero sequence voltage sensor, and the zero sequence voltage sensor is arranged at one side of the capacitive energy-taking power supply. A wire inlet side voltage sensor and a wire outlet side voltage sensor are mounted at the top of the zero sequence voltage sensor, a circuit breaker body is mounted at the top of the wire inlet side voltage sensor and the top of the wire outlet side voltage sensor, and the circuit breaker body is connected with a capacitive energy-taking power supply; an FTU controller; the beneficial effects of the utility model are that in combination with a distribution network closed-loop operation scene, phase voltages of three phases of incoming and outgoing lines of a distribution network circuit breaker are acquired, phase angles and amplitu