대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
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오차를 고려한 송전선 보호 거리계전 정정룰에 대한 고찰

Examination with Transmission Line Distance Relay Setting Rule Considering Error

  • 조성진 (명지대학교 차세대 전력기술 연구 센터) ;
  • 최면송 (명지대학교 차세대 전력기술 연구 센터) ;
  • 현승호 (명지대학교 차세대 전력기술 연구 센터) ;
  • 김종욱 (명지대학교 차세대 전력기술 연구 센터) ;
  • 이주왕 (명지대학교 차세대 전력기술 연구 센터) ;
  • 조범섭 (한국전력거래소) ;
  • 유영식 (한국전력거래소)
  • 발행 : 2002.07.10
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초록

Korea Power System Protection Setting Rule was used from the rectify 1990's. Thereafter transmission voltage is raised the voltage into 765kV, and introduction to new technology of Power System, and was many of variation but, it is using. The present is using Digital type distance relay for 765kV transmission line protection. If impedance value of transmission line were to value lower than setting, this would be operating and relay setting rule is for 85% into Zone 1 self section, and Zone 2 is a 125%, Zone 3 is a 225%. Which's $15{\sim}25%$ include current transformer error 5%, potential transformer 5%, relay calculation error 5% and margin factor from the field experience. This paper is discussed transmission protective relay and relay setting rule of high voltage power system and we verify the correctness relay setting rule with distance relay using Matlab simulation.

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