Title :
An analysis to force received in transformer core under DC bias conditions
Author :
Bai, Baodong ; Xu, Bing ; Lu, Jin
Author_Institution :
Special Motor & High Voltage Apparatus Key Lab. of Minist. of Educ., Shenyang Univ. of Technol., Shenyang, China
Abstract :
In high voltage direct current (HVDC) transmission system, earthed pole current enter into transformer windings through neutral point, which result in DC bias conditions, as a result increasing in transformer loss, noise level and force received. COMSOL Multiphyiscs is a finite element numerical analysis software, which is used for modeling and simulating calculation when study on scientific subject and engineering project based on partial differential equation. By using COMSOL Multiphyiscs software, this article explained coupling of electrical field, magnetic field, stress field, sound field, and analyze the transformer core force received and noise under DC bias condition.
Keywords :
HVDC power transmission; earthing; electric fields; finite element analysis; magnetic fields; transformer cores; transformer windings; COMSOL Multiphyiscs software; DC bias conditions; HVDC transmission system; earthed pole current; electrical field; finite element numerical analysis software; high voltage direct current transmission system; magnetic field; neutral point; noise level; partial differential equation; sound field; stress field; transformer core force received analysis; transformer loss; transformer winding; Magnetic flux leakage; Magnetostriction; Saturation magnetization; Transformer cores; Vibrations;
Conference_Titel :
Electrical Machines and Systems (ICEMS), 2011 International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4577-1044-5
DOI :
10.1109/ICEMS.2011.6073625
