Method, device and equipment for judging fault of three-phase four-wire intelligent electric energy meter and medium

The invention relates to the technical field of electric power. The invention discloses a method, a device and equipment for judging faults of a three-phase four-wire intelligent electric energy meter and a medium. Wherein. The method comprises the following steps: acquiring power factors, voltages and currents of the intelligent electric energy meter, the first element, the second element and the third element at a sampling moment; based on a preset fault identification starting rule, judging whether the intelligent electric energy meter starts fault identification; when it is judged that the intelligent electric energy meter needs to start fault recognition based on a preset fault recognition starting rule, whether the intelligent electric energy meter breaks down or not is judged based on the preset fault recognition rule according to the power factor of the intelligent electric energy meter, the power factor of the first element, the power factor of the second element and the power factor of the third ele