대한전기학회논문지:전기물성ㆍ응용부문C (The Transactions of the Korean Institute of Electrical Engineers C)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

봉상접지전극의 접지임피던스의 주파수의존성의 분석

Analysis of the Frequency Dependent Characteristics of Ground Impedance of a Ground Rod

  • 이복희 (인하대학 전자전기공학부) ;
  • 엄주홍 (기초전력공학공동연구원)
  • 발행 : 2004.08.01
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초록

This paper presents a systematic approach of measurement, modeling and analysis of grounding system impedance in the field of lightning protection system and intelligent power equipments. The measurement and analysis system of ground impedance is based on a computer aided technique. The magnitude and phase of ground impedance were determined by the novel measurement and analysis using the revised fall-of-potential method. The ground impedances of the ground rod of 50 m long are considerably dependent on the frequency. The ground impedance is mainly resistive in the frequency range of 3-20 kHz. At higher frequencies, the reactive components of the ground impedances are no longer negligible and the inductance of the ground rod was found to be the core factor deciding the ground impedance. Although the steady-state ground resistance of the ground rod of 50 m was less than that of the ground rod of 10 m, the ground impedances of the ground rod of 50 m over the frequency range of more than 60 kHz were much greater than those of the ground rod of 10 m. Furthermore, the equivalent circuit model based on the measured data was proposed. and the calculated results were in approximately agreement with the measured data.

키워드

참고문헌

  1. I. D. Lu and R. M. Shier, 'Application of a Digital Signal Analyzer to the Measurement of Power System Ground Impedance', IEEE Transactions on Power Apparatus and Systems, vol.100, no. 4, pp.1918-1922, 1981 https://doi.org/10.1109/TPAS.1981.316535
  2. A. D. Papalexopoulos and A. P. Meliopoulos, 'Frequency Dependent Characteristics of Grounding System', IEEE Transactions on Power Delivery, vol. PWRD-2, no.4, pp. 1073-1081, 1987
  3. J. H. Bogensperger, J. Frei and S. Pack, 'Resistance of Grounding Systems Stationary and Transient Behavior', Proc. 9th International Symposium on High Voltage Engineering, pp. 6715-1-4, 1995
  4. 이복희, 이승칠, 정보통신설비의 뇌보호, 인하대학교 출판부, pp. 197-202, 2004
  5. M. Mardiguian, Grounding and Bonding, Interference Control Technologies, Inc., pp.2-59~2-61, 1988
  6. 이복희, 이승칠, 접지의 핵심기초기술, 도서출판 의제, pp.65-69, 1999
  7. 이복희, 엄주홍, '가변주파수 인버터를 이용한 접지임피던스의 새로운 측정기법', 전기학회 논문지, vol.53C, no.5, pp. 253-257, 2004
  8. A. Geri, 'Behaviour of Grounding Systems Excited by High Impulse Currents: the Model and Its Validation', IEEE Transaction on Power Delivery, vol. 14, no. 3, pp. 1008-1017, 1999 https://doi.org/10.1109/61.772347
  9. S. Bourg, B. Sacepe and T. Debu, 'Deep earth electrodes in highly resistive ground: frequency behaviour', in Proc. IEEE Int. Symp. EMC. pp. 584-589, 1995 https://doi.org/10.1109/ISEMC.1995.523625
  10. M. Nayel, A. Ametani, Y. Baba, N. Nagaoka and S. Sekioks, 'A study on a mutual grounding impedance and its transient characteristic', Conf. Transmission and Distribution, vol. 2, pp.1270-1275, 2002 https://doi.org/10.1109/TDC.2002.1177661
  11. M. I. Jambak and H. Ahmad, 'Measurement of Grounding System Resistance Based on Ground High Frequency Behavior for Different Soil Type', Proc. TENCON 2000, vol. 3, pp. 207-211, 2000 https://doi.org/10.1109/TENCON.2000.892251
  12. R. Verma and D. Mukhedkar, 'Fundamental considerations and Impulse Impedance of Groundings', IEEE Transactions of Power Apparatus and Systems, vol. 100, no. 3, pp. 1023-1030, 1981 https://doi.org/10.1109/TPAS.1981.316638
  13. R. Verma and D. Mukhedkar, 'Impulse Impedance of Buried Ground Wire', IEEE Transactions on Power Apparatus and Systems, vol.99, no.5, pp.2003-2007, 1980 https://doi.org/10.1109/TPAS.1980.319827
  14. IEEE Std. 80-1986,IEEE Guide for Safety in AC Substation Grounding, IEEE Inc. pp.277-284, 1986
  15. A. D. Papalexopoulos and A. P. Meliopoulos, 'Frequency Dependent Characteristics of Grounding System', IEEE Transactions of Power Delivery, vol. 2, no. 4, pp. 1073-11081, 1987 https://doi.org/10.1109/TPWRD.1987.4308223
  16. IEEE, IEEE Recommended Practice for Grounding of Industrial and Commercial Power System, IEEE Std 142-1991, IEEE Inc., p. 186-189, 1991