| Title |
A study on Calculation of Short-circuit Electromagnetic Force in Power Transformer Considering Winding Tap Condition |
| Authors |
박근호(Keun-Ho Park) ; 김성윤(Seong-Yun Kim) ; 안현모(Hyun-Mo Ahn) ; 한성진(Sung-Chin Hahn) |
| DOI |
http://doi.org/10.5370/KIEE.2019.68.5.625 |
| Keywords |
Power trasformer ; Short-circuit electromagnetic |
| Abstract |
This paper deals with short-circuit electromagnetic force of power transformer depending on tap condition. In order to reduce the analysis time, we used a 2-D axi-symmetric model. Firstly, in order to prove the 2-D axi-symmetric model, we calculated percent impedance and maximum value of leakage magnetic flux density by using analytical method and finite element method. Secondly, short-circuit currents are calculated by using a short-circuit equation. Finally, short-circuit electromagnetic forces produced by short-circuit currents are computed by finite element method. And the results has compared depending on tap condition. The results are expected to be useful in structure design of power transformer. |