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

  • 제20권4호
  • /
  • Pages.72-77
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  • 2006
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  • 1229-4691(pISSN)
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  • 2287-5034(eISSN)
한국조명전기설비학회 (The Korean Institute of IIIuminating and Electrical Installation Engineers)
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인하도선의 길이가 과도접지임피던스에 미치는 영항

Effects of the Length of Down Conductors on Transient Ground Impedances

  • 이복희 (인하대학교 전자전기공학부) ;
  • 이수봉 (인하대학교 대학원 전기공학과) ;
  • 정동철 ((주)한진중공업)
  • 발행 : 2006.05.31
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초록

본 논문은 인하도선의 설치에 따른 접지시스템의 임펄스전류에 대한 과도임피던스 특성을 다루었다. 임펄스전류를 심매설 봉상 접지전각과 그리드 접지전극에 인가하였을 때 임펄스전류의 상승시간과 인하도선의 길이에 따른 전위상승과 실효임펄스접지임피던스를 측정하고 분석하였다. 과도접지임피던스는 접지전극의 형상과 크기 및 임펄스전류의 파형과 인하도선의 길이에 강하게 의존하며, 인덕턴스가 최소화되도록 인하도선을 설치하는 기법이 과도접지 임피던스의 저감을 위한 중요한 요소이다.

This paper presents the transient impedance behaviors according to the length of down conductors of grounding systems to lightning impulse currents. The potential rise and effective impulse ground impedance of the deeply-driven ground rod and grounding grid subjected to the impulse currents were measured and analyzed as a function of the rise time of impulse currents and lengths of down conductor. The transient ground impedances strongly depend on the configuration and size of grounding electrodes, the waveform of impulse currents and the length of down conductors, and the installation methods reducing the inductance of down conductors are an important factor to decrease the transient ground impedances.

키워드

참고문헌

  1. C. W. Barnett, B. L. Laird, J. L. Blackburn, W. C. Kotheimer, J. R. Linders, D. R. Volxka, J. A. Zulaski, and J. W. Walton, 'Summery of the Gride for the Grounding of Instrument Transformer Secondary Circuits and Case', IEEE Trans. on PD, Vol.3, No. 4, pp.1459-1465, 1988
  2. IEEE Std 1100-1999, IEEE Recimmended Practice for Powering and Grounding Electronic Equipment, IEEE Inc., pp.38-44, pp.128-129, 1999
  3. T. Takahashi, 'A Part of Grounding for Lightning Protection Technique', J. IEE of Japan, Vol.9, pp.671- 676, 1989
  4. Bok-Hee Lee,Dong-Cheol Jeong, Su-Bong Lee and Keun-Chul Chang, 'Effective Impulse Impedances of Deeply Driven Grounding Electrodes', KIEE International Trans on EA, vol. 4-C, no. 5, pp. 207214, 2004
  5. S. Karaki, et al, 'Transient Impedance of GIS Grounding Grid', IEEE Trans., Vol.PD-10, No.2, pp.723-738, 1995
  6. IEEE Std 81.2-1991, 'IEEE guide for Measurement of Impedance and Safety Characteristics of Large, Extended or Inter connected Grounding System', IEEE Inc., pp. 17-31, Dec. 1991
  7. Z. Stojkovic, M.S. Savic, J.M. Nahman, D. Salamon and B. Bukorovic, 'Sensitivity Analysis of Experimentally Determined Grounding Grid Impulse Characteristics', IEEE Trans., Vol. PD-13, No. 4, pp.1136-1141, 1998
  8. B. H. Lee, J. S. Park and S. C. Lee, 'Experimental Investigations of Transient Impedances of Some Grounding Systems', 1997 Japan-Korea Joint Syms. ED & HVE, pp.237-240, 1997
  9. B. R. Gupta and B. Thapar, 'Impulse Impedance of Grounding Grids', IEEE Trans. Vol.PAS-99, No.6, pp.214-218, 1980