Transformer on-load tap-changer fault diagnosis method based on vibration characteristics
A technology of on-load tap and diagnosis method, applied in the direction of instruments, circuit breaker testing, measuring devices, etc., can solve the problems of simple and single diagnostic parameters, poor operability, and low judgment accuracy, and achieves strong operability, Responsive and accurate results
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[0011] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.
[0012] like figure 1 As shown, the present invention judges whether the on-load tap-changer has a hidden danger of mechanical failure according to the vibration characteristics of the transformer on-load tap-changer. When the on-load tap-changer has a hidden danger of mechanical failure, its vibration energy curve, time characteristic parameter, amplitude Characteristic parameters will change. Therefore, the method for the transformer on-load tap-changer fault diagnosis based on the vibration characteristics of the present invention is, according to the diagnostic data measured, calculate the live vibration energy curve to be diagnosed and the original charged vibration energy curve, calculate the correlation coefficient of the two curves, and then Calculate the magnitude difference between the characteristic parameters of the live vibration to be di...
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