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Soil Modelling Techniques

Published: 30 December 2012
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Abstract

The main objective of grounding electrical systems is to provide a suitably low resistance connection to the substation above it the low resistance is needed to limit the potential rise of the substation from the potential of the surrounding earth. This potential rise must be limited so that there is no danger to anyone standing on ground but touching, for example, the substation fence. In order to ensure that the ground potential rise, and touch and step voltages, an accurate soil model are needed to perform calculations that ensures that the resistance of the grounding grid through the earth is sufficiently low. This soil model comes from the tested soil structure at the proposed grid location. This paper provides a literature survey of the various soil testing methods and soil modeling. The paper is divided into 2 parts: Part 1 describes the current soil measurement techniques; Part 2 examines the model construction of the uniform and two layer soil structures, and the short comings of the current modeling techniques.

Published in International Journal of Materials Science and Applications (Volume 1, Issue 1)
DOI 10.11648/j.ijmsa.20120101.12
Page(s) 8-13
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2012. Published by Science Publishing Group

Keywords

Soil Model, Sunde’s Curves, High Voltage Substation Grounding

References
[1] The Institute of Electrical and Electronic Engineers, Inc. (2000). IEEE Guide for Safety in AC Substation Grounding. New York: Publisher.
[2] Dawalibi, F.P. and D. Mukhedkar. " Optimum design of substation grounding in two-layer earth model—Part I ana-lytical study," IEEE Transactions in Power Systems Appli-cations, Vol. 94, pp. 252-261, March, 1975.
[3] Ma, J., F. P. Dawalibi, and R. D. Southey. "On the equivalence of uniform and two-layer soils to multilayer soils in the analysis of grounding systems," in Proceedings on the Institute Electrical Engineers—Generation, Transmission and Distribution, 1996, pp. 49-55.
[4] Dawalibi, F.P. and N. Barbeit. " Measurements and compu-tations of the performance of grounding systems buried in multilayer soils," IEEE Transactions on Power Delivery, Vol. 6, pp. 1483-1490, October, 1991.
[5] Sunde, E. D., Earth conduction effects in transmission systems, New York: McMillan, 1968.
[6] Dawalibi, F. and C.J. Blattner. "Earth resistivity measurement interpolation techniques," IEEE Transactions on Power Ap-paratus and Systems, Vol. PAS-103, pp. 374-382, February, 1984.
[7] Chow, Y.L. and M.M.A. Salama. "A simplified method for calculating the substation grounding grid resistance, " IEEE Transactions on Power Delivery , Vol. 9, pp. 736-742, April, 1994.
[8] Nekhoul, B., P. Labie, F.X. Zgainski, and G. Meunier. "Cal-culating the impedance of a grounding system," IEEE Transactions on Magnetics, Vol. 32, pp. 1509-1512, May, 1996.
[9] Elsherbiny, M.M., Y.L Chow, and M.M.A. Salama. "A fast and accurate analysis of grounding resistance of driven rodbed in a two-layer soil," IEEE Transactions on Power Delivery, Vol. 11, pp. 808-814, April, 1996.
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    Gary Gilbert. (2012). Soil Modelling Techniques. International Journal of Materials Science and Applications, 1(1), 8-13. https://doi.org/10.11648/j.ijmsa.20120101.12

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    Gary Gilbert. Soil Modelling Techniques. Int. J. Mater. Sci. Appl. 2012, 1(1), 8-13. doi: 10.11648/j.ijmsa.20120101.12

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    Gary Gilbert. Soil Modelling Techniques. Int J Mater Sci Appl. 2012;1(1):8-13. doi: 10.11648/j.ijmsa.20120101.12

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  • @article{10.11648/j.ijmsa.20120101.12,
      author = {Gary Gilbert},
      title = {Soil Modelling Techniques},
      journal = {International Journal of Materials Science and Applications},
      volume = {1},
      number = {1},
      pages = {8-13},
      doi = {10.11648/j.ijmsa.20120101.12},
      url = {https://doi.org/10.11648/j.ijmsa.20120101.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20120101.12},
      abstract = {The main objective of grounding electrical systems is to provide a suitably low resistance connection to the substation above it the low resistance is needed to limit the potential rise of the substation from the potential of the surrounding earth. This potential rise must be limited so that there is no danger to anyone standing on ground but touching, for example, the substation fence. In order to ensure that the ground potential rise, and touch and step voltages, an accurate soil model are needed to perform calculations that ensures that the resistance of the grounding grid through the earth is sufficiently low. This soil model comes from the tested soil structure at the proposed grid location. This paper provides a literature survey of the various soil testing methods and soil modeling. The paper is divided into 2 parts: Part 1 describes the current soil measurement techniques; Part 2 examines the model construction of the uniform and two layer soil structures, and the short comings of the current modeling techniques.},
     year = {2012}
    }
    

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    AB  - The main objective of grounding electrical systems is to provide a suitably low resistance connection to the substation above it the low resistance is needed to limit the potential rise of the substation from the potential of the surrounding earth. This potential rise must be limited so that there is no danger to anyone standing on ground but touching, for example, the substation fence. In order to ensure that the ground potential rise, and touch and step voltages, an accurate soil model are needed to perform calculations that ensures that the resistance of the grounding grid through the earth is sufficiently low. This soil model comes from the tested soil structure at the proposed grid location. This paper provides a literature survey of the various soil testing methods and soil modeling. The paper is divided into 2 parts: Part 1 describes the current soil measurement techniques; Part 2 examines the model construction of the uniform and two layer soil structures, and the short comings of the current modeling techniques.
    VL  - 1
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Author Information
  • University of Waterloo, Waterloo, Ontario, Canada

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