| Title |
Electromagnetic Force Calculation of Internal Winding Fault in A Distribution Power Transformer by using A Numerical Program |
| Authors |
Pan-Seok Shin ; Jung-Woo Ha ; Hee-Jun Chung |
| Keywords |
Electromagnetic Force ; Internal Wooing Fault ; Power Transformer |
| 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, OO[㎐], l[MVA], 22.9[㎸]/220[V], cable-type winding. The short-circuit current and electromagnetic force are calculated by FEM(Finite Element Method) program(Flux2D) and the results are verified with theoretical formula and PSPICE program. The simulation results are fairly good agreeIrent with the other verified methods within 5[%] error rate. The tum-to-tum short-circuit current is 500 times of the rated current and the electromagnetic force is about 2O-2OOtimes. 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. |