대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)
- 대한전기학회 2002년도 하계학술대회 논문집 B
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- Pages.744-746
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- 2002
투입전류 제한을 위한 무부하 변압기의 개폐제어방식
Controlled Switching Method to Limit the Inrush Current for Unloaded Transformer
- Lee, W.Y. (Korea Electrotechnology Research Institute) ;
- Park, K.Y. (Korea Electrotechnology Research Institute) ;
- Chong, J.K. (Korea Electrotechnology Research Institute) ;
- Kim, H.J. (Vitzrotech Co. Ltd.) ;
- Park, S.K. (KEPCO CEI)
- 발행 : 2002.07.10
초록
In this paper the method to limit inrush currents for unloaded transformers is proposed by controlling the opening instant in order to predetermine the residual flux. For the purpose of verifying the performance of the proposed method the test circuit with a single phase transformer is established and the effect of the controlled method is studied. With the basis of the obtained results the controlled method for three phase transformers with a wye-delta winding is also proposed. The analysis studies using EMTP(Electro-Magnetic Transient Program) are carried out in order to reveal its effectiveness.
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