Voltage ripple detection device, system and detection method thereof

The invention relates to a voltage ripple detection device, a system and a detection method thereof. A related operator can issue a detection instruction to a processor through communication between an upper computer and a wireless communication module, and the processor controls a load switching unit to switch into a pure resistive load according to the detection instruction. A meter power interface is connected to an electric energy meter, and a data acquisition unit acquires a voltage value and a ripple value of the electric energy meter through the load switching unit, so that the processor can acquire voltage test data and ripple test data according to the voltage value. Meanwhile, the processor uploads the voltage test data and the ripple test data to the upper computer through the wireless communication module, so that the related operator can know the detection data. Based on this, the voltage ripple batch automatic detection of the electric energy meter is realized, and the detection efficiency and a