Title :
The calculation of short-circuit reactance of transformers by complementary variational principles
Author :
Jiansheng, Yuan ; Naizhong, Chen ; Wenping, Li ; Xiang, Cui ; Hanguang, Shao
Author_Institution :
North China Inst. of Electr. Power, Hebei, China
fDate :
3/1/1992 12:00:00 AM
Abstract :
A T-Ω method for steady magnetic fields is developed. It is able to overcome the difficulties in the implementation of the complementary functional in the complementary variational principles to obtain the upper bound of the reactance and the energy of a magnetic system. The short-circuit reactances of a variety of transformer productions with different structure and different power have been calculated accurately by the method presented. The maximum relative errors of the calculation results are 2% compared with those obtained by experiments
Keywords :
electric reactance; magnetic fields; power transformers; complementary functional; complementary variational principles; maximum relative errors; power; short-circuit reactance; steady magnetic fields; Accuracy; Boundary value problems; Cities and towns; Eddy currents; Equations; Finite element methods; Magnetic fields; Production; Transformers; Upper bound;
Journal_Title :
Magnetics, IEEE Transactions on
