Research on Principle and Countermeasures of the Transformer Sympathetic Inrush

Author

Du Shenhui ; Weilu, Z. ; Wang Zhihong

Author_Institution

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

fYear

2009

fDate

27-31 March 2009

Firstpage

1

Lastpage

4

Abstract

Based on the analysis of sympathetic inrush in no-load parallel transformer, the principle and characteristics of sympathetic inrush are studied according to flux variation. Time differential method is analyzed to identify sympathetic inrush .The influencing factors of sympathetic inrush are studied. The points are verified by MATLAB simulation. The harm of sympathetic inrush to transformer differential protection and back-up protection are discussed, and several countermeasures to sympathetic inrush are presented.

Keywords

differential transformers; magnetic flux; power transformer protection; MATLAB simulation; back-up protection; magnetic flux variation; no-load parallel transformer; time differential method; transformer differential protection; transformer sympathetic inrush analysis; Circuit faults; Couplings; Iron; MATLAB; Magnetic flux; Power transformer insulation; Saturation magnetization; Surge protection; Switches; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific

Conference_Location

Wuhan

Print_ISBN

978-1-4244-2486-3

Electronic_ISBN

978-1-4244-2487-0

Type

conf

DOI

10.1109/APPEEC.2009.4918703

Filename

4918703