Impact of buckling deformation on the FRA signature of power transformer

Author

Amini, Amin ; Das, Niladri ; Islam, Shariful

Author_Institution

Dept. of Electr. & Comput. Eng., Curtin Univ., Perth, WA, Australia

fYear

2013

fDate

Sept. 29 2013-Oct. 3 2013

Firstpage

1

Lastpage

4

Abstract

Power transformer is an important asset within the electrical power system network. Frequency Response Analysis (FRA) has been developing in popularity in recent years as a tool to detect mechanical deformation of power transformers winding. Since the FRA has been relying on graphical analysis, it calls for an expert person to analyze the results to detect the type of the fault and its location. There are no reliable guidelines for FRA signature in the event that a failure occurs in service and the impact can be far reaching. The concept of FRA has been successfully used as a diagnostic technique to detect the winding deformation, core and clamping structure for the power transformers. This paper investigated the impact of the forced and free winding buckling based on the variation of the electrical parameters to show how these faults vary the FRA signature.

Keywords

condition monitoring; fault location; frequency response; power transformer testing; transformer windings; FRA signature; buckling deformation; clamping structure; condition monitoring; electrical power system network; fault detection; fault diagnostic technique; fault location; free winding buckling; frequency response analysis; graphical analysis; mechanical deformation; power transformers winding; winding deformation; Circuit faults; Clamps; Indexes; Inductance; Resistance; Stress; Windings; Buckling Fault; Frequency Response Analysis (FRA); condition monitoring; core and winding deformation;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Engineering Conference (AUPEC), 2013 Australasian Universities

Conference_Location

Hobart, TAS

Type

conf

DOI

10.1109/AUPEC.2013.6725456

Filename

6725456