Clock timing method and device for low-voltage centralized reading electric energy meter, master equipment and medium

The embodiment of the invention discloses a method and device, and the method comprises the steps: transmitting a measurement calling command to a corresponding slave device according to a calibration signal, and receiving feedback information returned by the slave device based on the measurement calling command, according to the interrogation command sending time, the time carried by the feedback information and the receiving time of the feedback information, to-be-calibrated time of corresponding slave equipment is determined, and the slave equipment is equipment directly controlled by the master equipment or equipment directly and indirectly controlled by the master equipment. When the master device is a non-master station device, the calibration signal is generated based on the feedback information; and determining a clock deviation value of the to-be-calibrated time by taking a body clock as a reference, and performing time synchronization operation on the slave equipment when an average deviation value