Method and device for identifying fault of converter transformer based on vibration signal

The invention discloses a method and device for identifying converter transformer faults based on vibration signals, and belongs to the technical field of converter transformer fault diagnosis. The method comprises the following steps: acquiring an obtained vibration signal by a sensor; determining a contrast vibration signal and a target analysis vibration signal; extracting a direct current side vibration signal; determining a characteristic distribution interval of the direct current side vibration signal; and judging a transformer fault and determining the position of the fault. The device comprises a classification unit, a determination unit, a screening unit, a correlation calculation unit, a direct current side signal calculation unit, a spectrum analysis unit, an accumulated energy ratio calculation unit, a kurtosis value calculation unit and a judgment unit. According to the method, whether the characteristic value of the separated direct current side vibration signal is in the characteristic distrib