대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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보상알고리즘을 적용한 송전선 보호용 전류차동 알고리즘

A Current Differential Relaying Algorithm for Transmission Lines Using an Advanced Compensation Algorithm of CTs

  • 강용철 (전북대학교 전자정보공학부, 차세대전력기술연구센터) ;
  • 임의재 (전북대학교 전자정보공학부, 차세대전력기술연구센터) ;
  • 최재원 (전북대학교 전자정보공학부, 차세대전력기술연구센터) ;
  • 진선용 (전북대학교 전자정보공학부, 차세대전력기술연구센터) ;
  • 조희영 (전북대학교 전자정보공학부, 차세대전력기술연구센터)
  • Kang, Y.C. (Chonbuk National University, NPT Center) ;
  • Lim, U.J. (Chonbuk National University, NPT Center) ;
  • Choi, J.W. (Chonbuk National University, NPT Center) ;
  • Jin, S.Y. (Chonbuk National University, NPT Center) ;
  • Cho, H.Y. (Chonbuk National University, NPT Center)
  • 발행 : 2003.07.21
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초록

A current differential relay may maloperate for external faults with CT saturation and requires an additional method to cope with the problem. This paper proposes a current differential relaying algorithm for transmission line protection using an advanced compensation algorithm of the secondary current of CTs. The compensation algorithm is unaffected by a remanent flux. The proposed algorithm does not need an additional method for CT saturation and thus can achieve high stability for an external fault.

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