대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

유기전압비를 이용한 변압기 보호계전 알고리즘

A Protective Relaying Algorithm for Transformers Using the Ratio of Induced Voltages

  • 강용철 (전북대학교 전자정보공학부) ;
  • 이병은 (전북대학교 전자정보공학부) ;
  • 윤재성 (전북대학교 전자정보공학부) ;
  • 옥승훈 (전북대학교 전자정보공학부)
  • 발행 : 2000.11.25
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초록

This paper presents a protective relaying algorithm for transformers using the ratio of induced voltages. The ratio primary and secondary induced voltages calculated calculates from currents and voltages of primary and secondary windings is used. In case of the steady state and magnetic inrush, it is equal to the turn ratio while it is different from the turn ratio in case of internal winding faults. The proposed algorithm operates satisfactorily even large residual flux.

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