Remote calibration system and method for AC voltage source

The invention relates to an AC voltage source remote calibration system and method, the system comprises two time interval counters, one end of the first time interval counter is connected with one end of a laboratory computer, and the other end of the first time interval counter is connected with the laboratory computer; the other end of the laboratory computer, the three-phase standard source, the first voltage frequency conversion module and the other end of the first time interval counter are connected in sequence; one end of the second time interval counter is connected with one end of the calibration field computer, and the other end of the calibration field computer, the alternating current voltage source to be calibrated, the second voltage frequency conversion module and the other end of the second time interval counter are sequentially connected. The problem that additional errors are difficult to measure can be solved, the accuracy and reliability of metering data are ensured, the calibration effic