Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Detection and Identification of the Series Arc in an Indoor Wiring System

옥내 배선계통에서 직렬 아크의 검출과 판별

  • Kim, Woo-Hyun (Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Wang, Guoming (Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Kil, Gyung-Suk (Electrical and Electronics Engineering, Korea Maritime and Ocean University) ;
  • Ji, Hong-Keun (Pysical Engineering Division, National Forensic Service Institute)
  • 김우현 (한국해양대학교 전기전자공학과) ;
  • 왕국명 (한국해양대학교 전기전자공학과) ;
  • 길경석 (한국해양대학교 전기전자공학과) ;
  • 지홍근 (국립과학수사연구원 이공학과)
  • Received : 2018.03.27
  • Accepted : 2018.05.19
  • Published : 2018.09.01
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Abstract

Most series arcs lead to electrical fires that cannot be interrupted by circuit breakers, because the arc's current is outside the breaker's operating range. In this paper, experiments were conducted on the detection and identification of series arcs to prevent electrical fires. Plugs and outlets specified in KS C 8305 were deteriorated to replicate arc faults commonly found in fields. The characteristics of series arcs resulting from various types of loose connections were determined by analyzing the frequency spectra and phase distributions of detected arc pulses. The results showed that the simulated arc defects used in this study were more similar to actual arc phenomena than the existing arc generator specified in UL 1699. In addition, loose connections, such as wire-wire, terminal-wire, and outlet-plug, can be identified by phases of $0^{\circ}$, $180^{\circ}$ and $360^{\circ}$, respectively. These phases can be detected by a band pass filter with a frequency range of 5~10 MHz, which can be used as the trip signal for circuit breakers.

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References

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