Power transformer detection system calibration device and method

The invention provides a power transformer detection system calibration device and method. The power transformer detection system calibration device comprises a transformation ratio group calibration module, a direct current resistance calibration module, an empty load calibration module and an industrial personal computer. One end of the calibration module is connected to the power transformer detection system, and the other end is connected to the industrial personal computer; the industrial personal computer connects the selected calibration module to an output terminal through a high-power contactor by controlling a switch switching network, and the unselected calibration module is isolated from the output terminal through a fracture of the contactor; the calibration module is used for simulating each functional unit of the power transformer, so that the power transformer detection system executes a test process. According to the method, the actual measurement error condition of the power transformer samp