Soil Resistivity Cut off Value and Concrete Pole Deployments in HV Transmission Mains

Authors: M. Nassereddine, J. Rizk, A. Hellany, M. Nagrial

Abstract:

The prologue of new High Voltage (HV) transmission mains into the community necessitates earthing design to ensure safety compliance of the system. Concrete poles are widely used within HV transmission mains; many retired transmission mains with timber poles are being replaced with concrete ones, green transmission mains are deploying concrete poles. The earthing arrangement of the concrete poles could have an impact on the earth grid impedance also on the input impedance of the system from the fault point of view. This paper endeavors to provide information on the soil resistivity of the area and the deployments of concrete poles. It introduce the cut off soil resistivity value ρ_SC, this value aid in determine the impact of deploying the concrete poles on the earthing system. Multiple cases were discussed in this paper.

Keywords: Soil Resistivity, HV Transmission Mains, Earthing, Safety.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1336492

References:

[1] Nassereddine M, Hellany A, Nagrial M. Rizk J. "Soil Resistivity Structure and its implication on the Earth Grid of HV substation” 2011 World Academy of Science, engineering and Technology, Vol 60, pp 1322-1326.
[2] IEEE guide to safety in AC substation grounding, 2000’ (IEEE, New York, 2000).
[3] AS/NZS 4853:2000 electrical hazards on metallic pipelines.
[4] Nassereddine M, Hellany A, Rizk J, 2009, How to design an effective earthing system to ensure the safety of the people, 2009 International Conference on Advances in Computational Tools for Engineering Applications, pp 416-421.
[5] Nassereddine M, Hellany A, 2009, AC Interference Study on Pipeline: the Impact of the OHEW under Full Load and Fault Current, Proceeding in the 2009 International Conference on Computer and Electrical Engineering, pp 497-501.
[6] Nassereddine M, Hellany A, Nagrial M, "Analysis of the impact of the OHEW under full load and fault current” 2010, International Jurnal of Energy and Environment (IJEE), Volume 1, Issue 4, pp. 727-736.
[7] Nassereddine M, Hellany A. "OHEW Earthing Design Methodology of Traction Substation” 2010 World Academy of Science, engineering and Technology, Vol 66, no. 0, pp 1644-1648, ISSN 2070-66.
[8] Nassereddine M, Hellany A, Nagrial M. Rizk J. "Safety Compliance of Substation Earthing Design” 2011 World Academy of Science, engineering and Technology, Vol 60, pp 525-529.
[9] Nassereddine M. Hellany A. "Earthing Design Improvement: Correlation between Design and Construction” 2010 World Academy of Science, engineering & Technology, no. 66, pp 1364-1367, ISSN2070-66.