Optimal Accelerometer Placement for Online Vibro-acoustic Measurement based Transformer Winding Condition Monitoring

This paper presents a method for improving online condition monitoring of the winding structure by determining the optimal locations for accelerometer placement when used in conjunction with vibro-acoustic monitoring. This method links vibrational data captured from a single-phase transformer and the corresponding acoustic pressure simulations from the Finite Element Model (FEM) of the transformer. Optimal accelerometer locations are decided based on the mode shapes occurring on the transformer tank which exhibit the largest acoustic pressure for that particular frequency.