Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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A Percentage Differential Current Relaying Algorithm for Bus Protection Using Current Transformer Saturation Detecting Algorithm

변류기 포화검출 알고리즘을 적용한 모선보호용 비율전류차동 계전방식

  • 강용철 (전북대학교 전자정보공학부) ;
  • 윤재성 (전북대학교 전자정보공학부) ;
  • 옥승훈 (전북대학교 전자정보공학부)
  • Published : 2001.11.16
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Abstract

A percentage current differential relaying algorithm is widely used for bus protection. However, it may maloperate external faults with CT saturation. This paper proposes a percentage current differential relaying algorithm for bus protection using CT saturation detecting algorithm. The CT saturation detecting algorithm uses difference of secondary current of CT and detects CT saturation. The proposed method distinguishes percentage differential relay operation caused by faults from percentage differential relay operation caused by CT saturations.

Keywords