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Commenced in January 2007 Frequency: Monthly Edition: International Publications Count: 29209

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Soil Resistivity Structure and Its Implication on the Pole Grid Resistance for Transmission Lines
High Voltage (HV) transmission lines are widely spread around residential places. They take all forms of shapes: concrete, steel, and timber poles. Earth grid always form part of the HV transmission structure, whereat soil resistivity value is one of the main inputs when it comes to determining the earth grid requirements. In this paper, the soil structure and its implication on the electrode resistance of HV transmission poles will be explored. In Addition, this paper will present simulation for various soil structures using IEEE and Australian standards to verify the computation with CDEGS software. Furthermore, the split factor behavior under different soil resistivity structure will be presented using CDEGS simulations.
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[1] M Nassereddine, A Hellany and J Rizk "'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.
[2] M Nassereddine and A Hellany "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.
[3] M Nassereddine and A Hellany "Designing a lightning protection system using the rolling sphere method" Proceedingin the 2009 International Conference on Computer and Electrical Engineering, pp 502-506.
[4] AS/NZS 4853:2000 electrical hazards on metallic pipelines.
[5] IEEE guide to safety in AC substation grounding, 2000- (IEEE, New York, 2000).
[6] A Hellany, M Nassereddine and M Nagrial "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] A Hellany and M Nassereddine, "OHEW Earthing Design Methodology of Traction Substation" 2010 World Academic of Science, Engineering and Technology Paris, France ISSN 2070-3724.
[8] A Hellany and M Nassereddine. "Earthing Design Improvement: Correlation Between Design and Construction" 2010 Workd Academy of Science, Engineering and Technology, Paris, France ISSN 2070- 3724.
[9] M Nassereddine "Transmission Mains Earthing Design; Under Ground to Over Head pole Transition (UGOH pole) Design to Meet the Safety Requirement- 2011 IDC Technologies, Earthing, Lightning and surge protection forum, Perth.
[10] R. Hans,ÔÇÿA practical approach for computation of grid current-, IEEE transactions on power delivery, Vol. 14, No. 3, July 1999.
[11] C.N. Chang, "computation of current-division factors and assessment of earth-grid safety at 161/69kV indoor-type and outdoor-type substations" IEE proc.-Gener. Transm. Distrib., Vol. 152, No. 6, November 2005.
[12] A Hellany, M Nagrial, M Nassereddine and J Rizk. "Safety Compliance of Substation Earthing Design" 2011 World Academy of Science, engineering and Technology Thailand.
[13] A. Campoccia, "A method to evaluate voltages to earth during an earth fault in an HV network in a system of interconnected earth electrodes of MV/LV substations" IEEE transactions on power delivery,Vol 23, No. 4, Oct 2008.
[14] E. Viel, "Fault current distribution in HV cable systems" IEE proc- Gener. Transmission distribution, Vol. 147, No. 4, July 2000.
[15] F. Dawalibi, " Measurements and computations of fault current distribution on overhead transmission lines" IEEE on transactions on power apparatus and systems, Vol. PAS-103, No. 3, March 1984.
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