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Vibration monitoring is thought as an effective tool for the condition monitoring of OLTC used in converter transformer, since the vibration signals are closely related to its mechanical switch-over process from one tap position to another position. Based on the vibration signals measured in some R type OLTC in converter station, phase space reconstruction is used to reconstruct the vibration signals...
The suitable condition of an on-load tap-changer (OLTC) is essential for the operation of converter transformer due to its frequent switch for the voltage regulation of power system. This paper describes a methodology to obtain the OLTC vibration characteristics in time–frequency domain. Considering the possible aliasing effect in vibration signal processing, an improved empirical mode decomposition...
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