The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Analysis of Power Quality by Transformer Inrush Current

변압기 여자돌입에 의한 전력품질 분석

  • 서훈철 (기초전력연구원 전력시스템연구실) ;
  • 여상민 (성균관대 대학원 전자전기공학과) ;
  • 김철환 (성균관대 정보통신공학부) ;
  • 유영식 (한국전력거래소 계통보호팀) ;
  • 조범섭 (한국전력거래소 천안지사)
  • Published : 2008.06.01
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Abstract

The transformer inrush current can cause a voltage drop by source impedance. This current can impact sensitive loads by the voltage drop. Therefore, it is necessary to take measures to limit this inrush current. This study, described in this paper, analyzes the power quality affected by transformer inrush current using the X power system in Korea. The Electromagnetic Transients Program(EMTP) is used to analyze the transient phenomenon. We discuss a method to model the hysteresis curve of the transformer in EMTP. We carried out various simulations to analyze the power quality during transformer energization. The analysis results of voltage drop by the inrush current occurrence when certain requirements are met are presented.

Keywords

References

  1. Mukesh Nagpal, Terrence G. Marinich, Ali Moshref, Kip Morison, and P. Kundur, "Assessing and Limiting Impact of Transformer Inrush Current on Power Quality", IEEE Trans. on Power Delivery, Vol. 21, No. 2, pp. 890-896, April 2006 https://doi.org/10.1109/TPWRD.2005.858782
  2. John H. Brunke, Klaus J. Frohlich, "Elimination of Transformer Inrush Currents by Controlled Swithing-Part I : Theoretical Considerations", IEEE Trans. On Power Delivery, Vol. 16, No. 2, pp. 276-280, April 2001 https://doi.org/10.1109/61.915495
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