Transformer substation grading ring monitoring method and device

The invention provides a transformer substation grading ring monitoring method and device, and the method comprises the steps: collecting original vibration data during the vibration test of a grading ring through employing an accelerometer before the service of the grading ring, and recognizing the original vibration characteristic parameters of the grading ring from the original vibration data; after the grading ring is in service, a foundation interference radar is adopted to collect in-service vibration data of the grading ring, and in-service vibration characteristic parameters of the grading ring are identified from the in-service vibration data; the difference between the in-service vibration characteristic parameter and the original vibration characteristic parameter is calculated, and if the difference exceeds a preset value, it is judged that the grading ring is damaged. By monitoring the operation state of the grading ring in real time, potential safety hazards are found and early warned in time, a