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

fYear

2009

fDate

6-9 May 2009

Firstpage

50

Lastpage

53

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ECTICON.2009.5136963

Filename

5136963