Title :
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
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;
Conference_Titel :
ELEKTRO, 2012
Conference_Location :
Rajeck Teplice
Print_ISBN :
978-1-4673-1180-9
DOI :
10.1109/ELEKTRO.2012.6225667
