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http://dx.doi.org/10.5207/JIEIE.2007.21.5.060

Electromagnetic Force Calculation of Internet Winding Fault in A Distribution Power Transformer by using A Numerical Program  

Shin, Pan-Seok (홍익대학교 전기공학과)
Ha, Jung-Woo (홍익대학교 전기공학과 대학원 전기공학과)
Chung, Hee-Jun (홍익대학교 전기공학과 대학원 전기공학과)
Publication Information
Journal of the Korean Institute of Illuminating and Electrical Installation Engineers / v.21, no.5, 2007 , pp. 60-67 More about this Journal
Abstract
In this paper, a simulation method of the internal winding fault is proposed to calculate winding current and electromagnetic force in a distribution power transformer by suing FEM program. The model of the transformer is a single phase, 60[Hz], 1[MVA], 22.9[kV]/220[V], cable-type winding. The short-circuit current and electromagnetic force are calculated by FEM(Finite Element Method) program(Flux2D) and the results we verified with theoretical formula and PSPICE program. The simulation results are fairly good agreement with the other verified methods within 5[%] error rate. The turn-to-turn short-circuit current is 500 times of the rated current and the electromagnetic force is about $20{\sim}200times$. The method presented in this study may serve as one of the useful tools in the electromagnetic force analysis of the transformer winding behavior under the short circuit condition for design of the structure.
Keywords
Electromagnetic Force; Internal Winding Fault; Power Transformer;
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