OLTC running state monitoring method and device and electronic equipment

The invention provides an OLTC running state monitoring method and device and electronic equipment, the running state of an OLTC is monitored by using OLTC running state monitoring equipment placed near the OLTC, an acceleration sensor and a cable do not need to be mounted on the surface of the OLTC, and the influence of the acceleration sensor mounted on the surface of the OLTC on the working state of the OLTC is avoided; moreover, an OLTC switching section signal is accurately extracted, four types of voiceprint features in the OLTC switching section signal are obtained through analysis: a spectral centroid, a frequency band energy ratio below a preset frequency, a spectral information entropy and a spectral kurtosis, and an audible sound identification model is constructed by using the four types of voiceprint features corresponding to an OLTC-based operation sample signal. And the four types of voiceprint features are processed to determine the operation state information of the OLTC, so that the accuracy