Research on Large DC-Biased Power Transformer

Author

Zhu, Weilu ; Yan, Caihong ; Jia, Yongjiang

Author_Institution

Sch. of Electr. Eng. & Inf. Sci., Hebei Univ. of Sci. & Technol., Shijiazhuang, China

fYear

2010

fDate

25-27 June 2010

Firstpage

4102

Lastpage

4105

Abstract

A 3D transient eddy current field analytical method is presented to calculate the additional loss and temperature rising in three-phase banks with separate single-phase transformers under DC biasing current. A SF-31500/110 double-winding transformer connected in two-phase exciting mode is applied to test the calculated data, and countermeasures against DC bias are proposed based on the discussion of influences on the excitation current and magnetic flux.

Keywords

eddy current losses; magnetic flux; matrix algebra; power transformers; transformer windings; transient analysis; 3D transient eddy current field analytical method; SF-31500/110 double-winding transformer; excitation current; large DC-biased power transformer; magnetic flux; single-phase transformers; three-phase banks; two-phase exciting mode; Circuit faults; Magnetic flux; Power transformer insulation; Saturation magnetization; Transformer cores; Windings; 3D transient eddy current field; DC bias; excitation current; exciting mode; three-phase banks with separate single-phase transformers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Control Engineering (ICECE), 2010 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-6880-5

Type

conf

DOI

10.1109/iCECE.2010.997

Filename

5629909