Title :
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
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;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2014 17th International Conference on
Conference_Location :
Hangzhou
DOI :
10.1109/ICEMS.2014.7013821
