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Novel digital electric energy meter field calibration device and calibration method

The invention relates to a novel digital electric energy meter field calibration device and a calibration method. The device comprises a D/A (Digital-to-Analog) conversion standard source and a conventional electric energy meter field calibrator; the input of the D/A conversion standard source is connected with the output of a detected digital electric energy meter; the output of the D/A conversion standard source is connected with the input of the conventional electric energy meter field calibrator; meanwhile, the conventional electric energy meter field calibrator is connected with the output of the detected digital electric energy meter. The method comprises the following steps that (1) the digital electric energy meter receives an IEC61850-9-1 message and simultaneously, the conventional electric energy meter field calibrator receives the electric quantity pulse of the digital electric energy meter; (2) the D/A conversion standard source converts a data stream into an analog signal and outputs a three-phase AC (Alternating Current) voltage; (3) the conventional electric energy meter field calibrator carries out comparison to complete field calibration. According to the invention, accuracy of metering the electric energy is ensured and fairness and justice of the three parties of power generation, power supply and power utilization are ensured.