Metering fault online detection method, system and device and storage medium

The invention discloses a metering fault online detection method, system and device and a storage medium. Comprises: obtaining metering data of an intelligent electric energy meter; determining fault information of the intelligent electric energy meter according to the metering data; if the fault information comprises a wrong wiring fault, according to the operation quadrant and the load characteristic of the intelligent electric energy meter, determining the direction of reactive power reading electric quantity during the wrong wiring fault period; according to the electric quantity correction coefficient of the intelligent electric energy meter and the active read electric quantity during the wrong wiring fault period, determining the active electricity returning and supplementing of the intelligent electric energy meter; and according to the electric quantity correction coefficient of the intelligent electric energy meter, the reactive power read electric quantity during the wrong wiring fault period and t