Numerical calculation of short circuit electromagnetic forces on the transformer winding

Author

Yun-Qiu, Tang ; Jing-Qiu, Qiao ; Zi-Hong, Xu

Author_Institution

Dept. of Electr. Eng., Harbin Inst. of Electr. Technol., China

Volume

26

Issue

2

fYear

1990

fDate

3/1/1990 12:00:00 AM

Firstpage

1039

Lastpage

1041

Abstract

Based on expressions for transient three-phase short-circuit current, the formulas for radial and axial electromagnetic forces acting on transformer windings are derived. The short-circuit forces, include three components: DC component, fundamental-frequency component, and double-frequency component. Using a 17000-kVA transformer as a model, the 2-D leakage magnetic fields and forces with various phase angles are calculated by the finite-element method. The results are compared with design formulas. Numerical calculations show that the conventional design formulas used to calculate radial force can meet engineering needs

Keywords

finite element analysis; magnetic leakage; short-circuit currents; transformer windings; 17000 kVA; DC component; design formulas; double-frequency component; electromagnetic forces; finite-element method; fundamental-frequency component; leakage magnetic fields; phase angles; radial force; short-circuit forces; transformer windings; transient three-phase short-circuit current; Circuit faults; Electromagnetic forces; Electromagnetic transients; Frequency; Iron; Magnetic circuits; Magnetic fields; Power transformers; Short circuit currents; Windings;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.106498

Filename

106498