조명전기설비학회논문지 (Journal of the Korean Institute of Illuminating and Electrical Installation Engineers)

  • 제27권5호
  • /
  • Pages.81-88
  • /
  • 2013
  • /
  • 1229-4691(pISSN)
  • /
  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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디지털 신호 처리 기반 저압 차단기용 전자식 계전기 개발

A Development of Electronic Type Relay for Low Voltage Circuit Breaker based on Digital Signal Processing

  • 박병철 (전자부품연구원 디지털컨버젼스연구센터) ;
  • 손종만 (LS산전 전력기기 제품연구소) ;
  • 송성근 (전자부품연구원 디지털컨버젼스연구센터) ;
  • 신중린 (건국대학교 전기공학과)
  • 투고 : 2013.02.08
  • 심사 : 2013.03.26
  • 발행 : 2013.05.31
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초록

A low voltage circuit breaker protects electrical equipments from over current and short faults of system by cutting the power supply. The breaker use a thermal magnetic type trip device from the past. In recent years, electronic type relays are applied due to useful functions and services. The purpose of this development is full digitalizing of relay functions of a low voltage breaker. It includes separation of current sensor from current transformer, digital signal processing, high speed relaying, and voltage measuring for power meter. The suggestions are tested and implemented by making prototype and testing its all relay functions.

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참고문헌

  1. Molded case circuit breakers Marking and Application Guide, UL, January 2012.
  2. Molded case circuit breakers Technical Notes, Mitsubishi electric, Dec 2006.
  3. PowerPactTM H-, J-, and L-Frame Circuit Breakers with Micrologic Trip Units User Guide, Schneider electric, 48940-313-01, June 2011.
  4. Molded case circuit breakers Technical catalog, ABB, 1SDC210018D0202, July 2007.
  5. LV breaking by current limitation, Schneider electric, Technique no. 162, 1999.
  6. Standard Inverse-Time Characteristics Equations for Overcurrent Relays. IEEE Std. C37.112-1996.
  7. Thermal Electrical Relays. International Std. IEC 255-8.
  8. Stanley E. Zocholl, Gabriel Benmouyal, "On the Protection of Thermal Processes" IEEE TRANSACTIONS ON POWER DELIVERY, VOL. 20, NO. 2, APRIL 2005.
  9. Low-voltage switchgear and controlgear - Part 2 Circuit-breakers, IEC 60947-2.