A novel approach to the classification of the transient phenomena in power transformers using combined wavelet transform and neural network

The wavelet transform is a powerful tool in the analysis of the power transformer transient phenomena because of its ability to extract information from the transient signals simultaneously in both the time and frequency domain. This paper presents a novel technique for accurate discrimination betwe...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power delivery 2001-10, Vol.16 (4), p.654-660
Main Authors: Mao, P.L., Aggarwal, R.K.
Format: Article
Language:English
Subjects:
Computer simulation
Faults
Information analysis
Inrush current
Magnetic analysis
Neural networks
Power transformers
Signal analysis
Spectra
Surge protection
Transformers
Transient analysis
Wavelet
Wavelet analysis
Wavelet domain
Wavelet transforms
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The wavelet transform is a powerful tool in the analysis of the power transformer transient phenomena because of its ability to extract information from the transient signals simultaneously in both the time and frequency domain. This paper presents a novel technique for accurate discrimination between an internal fault and a magnetizing inrush current in the power transformer by combining wavelet transforms with neural networks. The wavelet transform is firstly applied to decompose the differential current signals of the power transformer into a series of detailed wavelet components. The spectral energies of the wavelet components are calculated and then employed to train a neural network to discriminate an internal fault from the magnetizing inrush current. The simulated results presented clearly show that the proposed technique can accurately discriminate between an internal fault and a magnetizing inrush current in power transformer protection.
ISSN:0885-8977
1937-4208
DOI:10.1109/61.956753