Title :
Numerical Analysis of Eddy Current Field in the Ascending Flange for the Bushings and Tank Wall of a Large Transformer
Author :
Li, Y. ; Ho, S.L. ; Wang, N. ; Tang, R.Y.
Author_Institution :
Res. Inst. of Special Electr. Machines, Shenyang Univ. of Technol., Shenyang
Abstract :
The three-dimensional (3D) open boundary eddy current field induced by heavy current flowing in the coils and winding leads in large power transformers is calculated. The eddy current loss and local overheating problem in the tank wall and in the ascending flange of bushings are analyzed and reported in this paper. The effectiveness of a magnetic by-pass plate near the coil ends for reducing the eddy current loss and local overheating in the clamp plates is discussed.
Keywords :
eddy current losses; eddy currents; transformers; 3D open boundary eddy current field; ascending flange; bushings; clamp plates; eddy current loss; large transformer; local overheating; magnetic by pass plate; numerical analysis; tank wall; Boundary conditions; Clamps; Coils; Eddy currents; Equations; Flanges; Insulators; Magnetic field measurement; Numerical analysis; Power transformers; Eddy current field; Loss; Power transformer;
Conference_Titel :
Power System Technology and IEEE Power India Conference, 2008. POWERCON 2008. Joint International Conference on
Conference_Location :
New Delhi
Print_ISBN :
978-1-4244-1763-6
Electronic_ISBN :
978-1-4244-1762-9
DOI :
10.1109/ICPST.2008.4745377
