Simulated Analysis for the Transient Impedance Behaviors of Counterpoises Subjected to the Impulsive Currents

임펄스전류에 의한 매설지선의 과도임피던스특성에 대한 모의해석

  • 조정현 (인하대 IT공대 전기공학과) ;
  • 이복희 (인하대 IT공대 전기공학과)
  • Published : 2009.10.01

Abstract

A ground electrode subjected to lightning surge current shows the transient impedance behaviors. The ground electrode for protection against lightning should be evaluated in view of the transient grounding impedance and conventional grounding impedance, not ground resistance. The transient impedance characteristics of ground electrodes are influenced by the shape of ground electrode and the soil characteristics, as well as the waveform of lightning surge current. In order to propose a simulation method of analyzing the transient impedance characteristics of the grounding system in practical use, this paper suggests a theoretical analysis method of distributed parameter circuit model to simulate the transient impedance characteristics of counterpoise subjected to lightning surge current. EMTP and Matlab programs were employed to compute the transient grounding impedances of three counterpoises with different lengths. As a consequence, the simulated results using the proposed distributed parameter circuit model are in good agreement with the measured results.

Keywords

References

  1. IEC 62305-1, 'Protection against lightning - Part 3: Physical damages to structures and life hazard', 1st ed., pp.43-52, 2006
  2. S. Bourg, B. Sacepe, T. Debu, 'Deep earth electrodes in highly resistive ground frequency behavior,' IEEE International Symposium on Electromagnetic Compatibility, pp.584-589, 1995
  3. Leonid Grcev, 'Lightning Surge Characteristics of Earthing Electrodes,' 29th International Conference on Lightning Protection, pp. 5a-1-1-16, 2008
  4. H. Griffiths, A. M. Davies, 'Effective Length of earth electrodes under high frequency and transient conditions,' 25th International Conference on Lightning Protection, pp.469-471, 2000
  5. M. E. Almeida and M. T. Correia de Barros 'Fundamental considerations on long ground electrodes design', 13th International Symposium on High Voltage Engineering, pp.241-244, 2003
  6. 이복희, 이승칠, '접지의 핵심 기초 기술', 도서출판 의제, pp.40, 67-68, 1999
  7. E. D. Sunde, 'Surge Characteristics of a Buried Bare wire', AIEE Transactions, Vol. 59, pp. 987-991, 1940
  8. H. B. Dwight, 'Calculation of Resistances to Ground', AIEE Transactions, Vol. 55, pp.1319-1328, 1936
  9. Yaqing Liu, Nelson Theethayi, Rajeev Thottappillil, 'An Engineering Model for Transient Analysis of Grounding System Under Lightning Strikes: Nonuniform Transmission-Line Approach', IEEE Trans. Power Del., Vol. 20, No, 2, Apr. 2005
  10. William H. Hayt, John A. Buck, 'Engineering Electromagnetics, sixth edition', McGraw-Hill, pp.183-186, 225-231, 442-448, 540-543, 2001
  11. M. I. Lorentzou, N. D. Hatziargyriou, and B. C. Papadias, ''Time domain analysis of grounding electrodes impulse response,' IEEE Trans. Power Del., Vol. 18, No.2, pp. 517-524, Apr. 2003 https://doi.org/10.1109/TPWRD.2003.809686
  12. 이복희, '전력시스템공학', 인하대학교 출판부, pp.137-143, 2007
  13. IEEE Std 81.2-1991, 'IEEE Guide for Measurement of Impedance and Safety Characteristics of Large, Extended or Interconnected Grounding Systems,' IEEE Inc., pp.9-22, 1991
  14. IEC 62305-1, 'Protection against lightning - Part 1: General principles,' 1st ed., pp.71-85, 2006
  15. Silverio Visacro, Wyllian L.F. Pinto, Fuad S. Almeida, M.H. Murta Vale, Glaucio Rosado, 'Experimental Evaluation of Soil Parameter Behavior in the Frequency Range Associated to Lightning Currents,' 29th International Conference on Lightning Protection, pp.5c-2-1-5, 2008