Voltage qualification rate recording method and device of dual-core intelligent electric meter

The invention relates to a voltage qualification rate recording method and device of a dual-core intelligent electric meter, the dual-core intelligent electric meter and a storage medium. The method comprises the steps of enabling a management unit of the dual-core intelligent electric meter to obtain real-time voltage data corresponding to a time interval of a to-be-recorded voltage qualification rate from a metering unit of the dual-core intelligent electric meter; determining a voltage state identification condition for identifying the state of the real-time voltage data; based on the voltage state identification condition, obtaining a voltage over-lower limit duration, a voltage over-upper limit duration and a voltage monitoring duration; and summing the voltage over-lower limit duration and the voltage over-upper limit duration to obtain a voltage over-limit duration, taking a ratio of the voltage over-limit duration to the voltage monitoring duration as a voltage over-limit rate, obtaining the qualifica