Diagnosing winding and core condition of power transformer by vibration signal analysis

Author

Munir, B.S. ; Smit, J.J. ; Rinaldi, I.G.M.R.

Author_Institution

PT PLN (Persero), Jakarta, Indonesia

fYear

2012

fDate

23-27 Sept. 2012

Firstpage

429

Lastpage

432

Abstract

The ability to diagnose the integrity of the transformer windings and core through online diagnostic method would be useful for electric utilities who are concerned about the availability and reliability of power transformer. This paper presents results of a study to identify the condition of power transformer windings and core by measuring the vibration signal of outdoor transformer in normal operating conditions. The obtained vibration signal which is recorded from various places on the transformer tank is analyzed by matching the signal frequency spectrum with transformer load. From this study, mechanical integrity of windings and core inside the transformer is determined by comparing the correlation between each main frequency of vibration signal and the load among similar transformer.

Keywords

power transformers; reliability; transformer cores; transformer windings; core condition; electric utilities; normal operating conditions; online diagnostic method; outdoor transformer; power transformer; reliability; signal frequency spectrum; transformer load; transformer tank; transformer windings; vibration signal analysis; Acceleration; Frequency measurement; Oil insulation; Power transformers; Vibration measurement; Vibrations; Windings;

fLanguage

English

Publisher

ieee

Conference_Titel

Condition Monitoring and Diagnosis (CMD), 2012 International Conference on

Conference_Location

Bali

Print_ISBN

978-1-4673-1019-2

Type

conf

DOI

10.1109/CMD.2012.6416170

Filename

6416170