Title :
A wavelet-based energy profile approach for discrimination between fault and inrush current
Author :
Sheshyekani, K. ; Gharehpetian, G.B.
Author_Institution :
Amirkabir Univ. of Technol., Tehran
Abstract :
This paper presents a new method for discrimination between faults and inrush current in transformers using the energy profile of the current. In this approach, the discrete wavelet transform has been used to extract the energy of the signal at 15 resolution levels. It is shown that the energy profile of wavelet decomposition levels leads to the accurate discrimination between fault and inrush current.
Keywords :
discrete wavelet transforms; fault currents; fault diagnosis; power transformers; discrete wavelet transform; faults; inrush current; transformers; wavelet decomposition levels; wavelet-based energy profile approach; Continuous wavelet transforms; Discrete wavelet transforms; Frequency; Signal resolution; Space technology; Surge protection; Transformers; Transient analysis; Wavelet analysis; Wavelet transforms; Discrete wavelet transform; Fault current; Inrush current; Transformers;
Conference_Titel :
Power Tech, 2005 IEEE Russia
Conference_Location :
St. Petersburg
Print_ISBN :
978-5-93208-034-4
Electronic_ISBN :
978-5-93208-034-4
DOI :
10.1109/PTC.2005.4524381
