Calibration device and method capable of synchronously measuring multiple voltage transformers at one time
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The invention discloses a calibration device and a calibration method capable of synchronously measuring multiple voltage transformers at one time, and belongs to the technical field of metering tests of electric power. In order to solve the problems that the efficiency of measurement is extremely low, an operator frequently contacts high voltage and the safety of production is reduced because the conventional voltage transformer can only be independently measured, a method for combining a plurality of calibrated voltage transformers with a high-standard voltage transformer to form a comparison method circuit is used in the invention; a multi-channel transformer calibrator is used for directly acquiring a differential voltage signal between the plurality of calibrated voltage transformers and the high-standard voltage transformer; and the multiple voltage transformers can be synchronously measured at one time by calculation. By the calibration device, the working efficiency of measuring the voltage transformers by the operator is improved, and the high-voltage contacting frequency of the operator is reduced, so that more safe measurement is ensured. Therefore, the calibration device and the calibration method are major breakthrough in a voltage transformer calibration technology.