The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Grounding Resistance and Current Characteristics of the Planar Earth Structure using Multiple Discharge Paths

다중방전 경로를 이용한 편상접지체의 접지저항 및 전류특성

  • Kim, Young-Sun (Dept. of Electrical and Electronic Engineering, Joongbu University) ;
  • Kim, Dong-Min (Dept. of Electrical and Electronic Engineering, Joongbu University) ;
  • Lee, Ki-Sik (School of Electronics and Electrical Engineering, Dankook University)
  • Received : 2016.04.21
  • Accepted : 2016.06.17
  • Published : 2016.09.01
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Abstract

This study proposes a newly modified form of existing ground electrodes in order to secure trust of grounding system for large current caused by a stroke of lightning. Proposed planar earth structure has a several needle electrodes around a circular rod and 4 plane electrodes in all directions. The plane electrodes are fused with the insulator on the linear rod, so that they're electrically isolated. The concept is to increase the discharge amount of earth structure using multiple discharge paths like needle and plane electrodes. To check the discharge efficiency of the suggested scheme, the discharge currents are compared with typically used two kinds of ground rods. To ensure accuracy in the measurement of the discharge current, the same material was used for the comparison model. Also, the ground resistance are simulated by CDEGS commercial software and the results are compared with measured data. Based on this kind of experimental study, the suggested ground rod can be used when designing a ground system or when constructing a ground system at the site.

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References

  1. Analysis and Forecast of All Source Disaster Status, National Emergency Management Agency, p. 17-18, p. 27-30, 2011.
  2. B, H. Lee and J. S. Park, "Transient Impedance Characteristics of Mesh Grounding System under Impulse Current," KIEE 1997 Autumn Conference, pp. 361-363, 1997.
  3. A. Geri, "Behaviour of grounding systems excited by high impulse currents: the model and its validation," IEEE Trans. on Power Delivery, Vol. 14, No. 3, pp. 1008-1017, Jul. 1999. https://doi.org/10.1109/61.772347
  4. G. Vijayaraghavan, Mark Brown, and Malcolm Barnes, Practical Grounding, Bonding, Shielding and Surge Protection, Newnes, Linacre House, Jordan Hill, Oxford OX2 8DP. UK, pp. 62-78, 2004.
  5. R. P. O. Riley, Electrical Grounding: Bringing Grounding Back to Earth, Delmar Publishers, NewYork, p. 40, 2002.
  6. L. Grcev, M. Heimbach, "Frequency Dependent and Transient Characteristics of Substation Grounding Systems," IEEE Transactions on Power Delivery, Vol. 12, No. 1, pp. 172-178, Jan. 1997. https://doi.org/10.1109/61.568238
  7. W. C. Hart and E. W. Malone, Lightning and Lightning Protection, Interference Control Technologies, Inc, Gainesville, Virginia, pp. 67-76, 1988.
  8. P. R. Tompson, "Lightning Protection of SCADA and Telemetry Systems," Proc. of 2nd Annual Technical Conference on Lightning Protection & Earthing, pp. 1-6, 1994.
  9. SES(Safe Engineering Service & Technologies ltd), CDEGS (Current Distribution Electromagnetic interference Grounding & soil structure analysis) Manual, Ver. 97 for Windows.
  10. IEEE Std. 81, Institute of Electrical and Electronics Engineers, 2012.