A new on-line monitoring method of transformer winding axial displacement based on measurement of scattering parameters and decision tree

Authors:
M. Akhavanhejazi;G. B. Gharehpetian;R. Faraji-dana;G. R. Moradi;M. Mohammadi;H. A. Alehoseini
Affiliations:
Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran;Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran;School of Electrical and Computer Engineering, University of Tehran, Tehran, Iran;Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran;School of Electrical and Computer Engineering, Shiraz University, Shiraz, Iran;Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran
Venue:
Expert Systems with Applications: An International Journal
Year:
2011

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Abstract

In this paper the scattering parameter of a simplified model of transformer has been measured in different axial displacement of the winding using a Network Analyzer. Two indices have been suggested to detect the axial displacement. The measurement results show the effectiveness of these indices. A new method of the detection of the axial displacement extent based on decision tree (DT) has been proposed, too. It has been shown that this method has a good accuracy to determine the displacement of the winding and its extent.