This paper deals with new procedures based on vibroacoustic techniques to diagnose power MV/LV transformers. The normally operating machines can be monitored and checked from a remote, dedicated diagnostic center where information is received directly from the field. The diagnostic method adepte and the experimental test results are reported. Tests have been performed either in the laboratory or directly in the field on transformers in normal operating conditions. The laboratory tests related the transformer vibrations to internal anomalies. The suggested monitoring and diagnostic system allows to usefully schedule preventative maintenance, reduce costs and improve the quality of power distribution.
Bartoletti, C., Desiderio, M., Di Carlo, D., Fazio, G., Muzi, F., Sacerdoti, G., et al. (2004). Vibro-acoustic techniques to diagnose power transformers. IEEE TRANSACTIONS ON POWER DELIVERY, 19(1), 221-229 [10.1109/TPWRD.2003.820177].