Acoustic emission signal analysis of On-Load Tap Changer (OLTC)

Author

Shanker, T. Bhavani ; Nagamani, H.N. ; Punekar, Gururaj S.

Author_Institution

Central Power Res. Inst., Bangalore, India

fYear

2013

fDate

6-8 Dec. 2013

Firstpage

347

Lastpage

352

Abstract

On-Load Tap Changer (OLTC) forms a vital part of a transformer. Acoustic emission signals have been acquired from OLTC of 230 kV 3 phase power transformers for signature analysis. The acoustic emission signals have been analyzed to characterize the signals with reference to energy and frequency using Discrete Wavelet Transform. Case studies of AE signals obtained from healthy OLTCs have been presented in the paper for probable consideration as reference signals for healthy and normally operating OLTCs.

Keywords

acoustic emission; acoustic signal processing; discrete wavelet transforms; on load tap changers; 3-phase power transformers; AE signal; acoustic emission signal analysis; discrete wavelet transform; healthy-operating OLTC; normally-operating OLTC; on-load tap changer; signature analysis; voltage 230 kV; Acoustic emission; Conferences; Discrete wavelet transforms; Power transformers; Sensors; Acoustic Emission (AE); Discrete Wavelet Transform (DWT); Electrical discharges; On-Load Tap Changer (OLTC);

fLanguage

English

Publisher

ieee

Conference_Titel

Condition Assessment Techniques in Electrical Systems (CATCON), 2013 IEEE 1st International Conference on

Conference_Location

Kolkata

Print_ISBN

978-1-4799-0081-7

Type

conf

DOI

10.1109/CATCON.2013.6737525

Filename

6737525