Title :
Inrush current identification based on wavelet transform and correlation factors
Author :
Kargar, H. Kazemi ; Jabbari, M. ; Golmohammad-zadeh, S.
Author_Institution :
Dept. of Electr. Eng., Shahid Beheshti Univ., Tehran, Iran
Abstract :
One of the major problems due to protecting of power transformers is discrimination between inrush currents and single phase to ground faults currents. In this paper, a new method based on wavelet transform and correlation factors will be proposed. In the suggested method, a discrete wavelet transform has been used which its third step (d3) consists of information for the detection of discrimination. Also correlation factors have been utilized to make a comparison between the d3 of the inrush currents and the single phase to ground faults. The new method is approved by a simulation program running in MATLAB.
Keywords :
discrete wavelet transforms; fault currents; power transformer protection; MATLAB simulation program; correlation factors; discrete wavelet transform; fault current; inrush current identification; power transformer protection; Fault currents; Fault diagnosis; MATLAB; Power engineering and energy; Power system simulation; Power transformers; Random variables; Reactive power; Surge protection; Wavelet transforms; Correlation Factors; Inrush Current; Power Transformer; Single Phase to Ground Fault; Wavelet Transform;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology, 2009. ECTI-CON 2009. 6th International Conference on
Conference_Location :
Pattaya, Chonburi
Print_ISBN :
978-1-4244-3387-2
Electronic_ISBN :
978-1-4244-3388-9
DOI :
10.1109/ECTICON.2009.5136963
