Impact of built-in lung-type magnetic shielding on short-circuit strength of large power

Author

Bo Zhang ; Yan Li ; Laiquan Tang

Author_Institution

Res. Instn. of Special Machines, Shenyang Univ. of Technol., Shenyang, China

fYear

2014

fDate

22-25 Oct. 2014

Firstpage

2039

Lastpage

2042

Abstract

In order to research the impact of built-in lungtype magnetic shielding on short-circuit strength of large power transformer, the mathematical model of magnetic shielding considering position difference was applied with three-dimensional nonlinear finite element method, the distribution of leakage field analysis was given, the short-circuit strength of winding was checked introducing national standard GB1094.5^[1]. The results showed the distribution of leakage field has been changed and the shielding has a definite impact on short-circuit strength.

Keywords

finite element analysis; magnetic leakage; magnetic shielding; power transformers; short-circuit currents; transformer windings; 3D nonlinear finite element method; GB1094.5 national standard; built-in lung-type magnetic shielding; leakage field analysis distribution; mathematical model; position difference; power transformer; short-circuit strength; Eddy currents; Magnetic flux leakage; Magnetic shielding; Power transformers; Silicon; Windings; Wires;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Machines and Systems (ICEMS), 2014 17th International Conference on

Conference_Location

Hangzhou

Type

conf

DOI

10.1109/ICEMS.2014.7013821

Filename

7013821