Title :
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
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);
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
DOI :
10.1109/CATCON.2013.6737525
