Influence of remanent magnetization on the diagnostic of distribution 25MVA transformer by SFRA method

Author

Sedlák, Jozef ; Brandt, Martin ; Seewald, Róbert

Author_Institution

Dept. of Mechatron. & Electron., Univ. of Zilina, Zilina, Slovakia

fYear

2012

fDate

21-22 May 2012

Firstpage

465

Lastpage

468

Abstract

This paper deals with the influence of core magnetization on its frequency response analysis. Remanent magnetization is a characteristic property of ferromagnetic materials. The core can aquire different value of remanent magnetization in the process of diagnostic measurements. This fact is very important from the point of view of good representation of results from measurements. In the past, there was made a couple of measurements on 3-phase dry transformer (3000VA). In the present the measurements were done on distribution 25MVA transformer in order to confirm an influence of remanent magnetization on SFRA measurements.

Keywords

ferromagnetic materials; magnetisation; power distribution; power transformers; 3-phase dry transformer; SFRA method; core magnetization; distribution transformer diagnostic; ferromagnetic materials; frequency response analysis; remanent magnetization influence; Magnetization; Oil insulation; Power transformer insulation; Transformer cores; Windings; SFRA; core; diagnostic; magnetization; remanent; transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

ELEKTRO, 2012

Conference_Location

Rajeck Teplice

Print_ISBN

978-1-4673-1180-9

Type

conf

DOI

10.1109/ELEKTRO.2012.6225667

Filename

6225667