An Investigation into Substation Grounding and Its Implementation on Gaza Substation

Ahmed Hammuda, Hassan Nouri, Mohammed Saleh Al-Ayoubi

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DOI: 10.4236/epe.2011.35074                

Abstract

An investigation into the optimal design of a substation grounding system for the transmission substation in Gaza City, Palestine has been carried out. A research into the most influential parameters on the effectiveness of the substation grid system has been performed and its results have been incorporated into the Gaza case study. Through modelling and simulating the power station in Gaza while considering some field data, an optimal substation grounding grid has been designed and has shown complete conformance to safety. It is thus considered that such a design will protect personnel in any area of the substation in addition to the installed machinery if the largest possible fault current was to traverse the earth.

Keywords

Gaza, Grounding Grid, Ground Resistance, Substation, Step Voltage, Touch Voltage

Conflicts of Interest

The authors declare no conflicts of interest.

References

[1]	IEEE, “IEEE Recommended Practice for Determining the Electric Power Station Ground Potential Rise and Induced Voltage From a Power Fault,” IEEE Std 367-1996, 1996, pp. 1-125.
[2]	J. Ma and F. P. Dawalibi, “Modern Computational Meth- ods for the Design and Analysis of Power System Ground- ing,” Proceedings of International Conference on Power System Technology, Beijing, Vol. 1, 18-21 August 1998, pp. 122-126.
[3]	S. Ghoneim, H. Hirsch, A. Elmorshey and R. Amer, “Sur- face Potential Calculation for Grounding Grids,” IEEE Power and Energy Conference, Jaya, 28-29 November 2006, pp. 501-505. doi:10.1109/PECON.2006.346703
[4]	IEEE, “IEEE Recommended Practice for Industrial and Commercial Power System Analysis,” IEEE Std 399-1997, 1997, pp. 1-483.
[5]	J. G. Sverak, “Simplified Analysis of Electrical Gradients above a Ground Grid, Part I: How Good Is the Present IEEE Method?” IEEE Power Engineering Review, Vol. PER-4, No.1, 1984, pp. 26-27. doi:10.1109/MPER.1984.5525426
[6]	F. Dawalibi and D. Mukhedkar, “Parametric Analysis of Grounding Grids,” IEEE Transactions on Power Appa- ratus and Systems, Vol. PAS-98, No. 5, 1979, pp. 1659- 1668. doi:10.1109/TPAS.1979.319484
[7]	IEEE, “IEEE Guide for Safety in AC Substation Ground- ing,” IEEE Std 80-2000, 2000, pp. 1-192.
[8]	R. Maliha, “Gaza Power Station Management,” ([e-mail]). Part of Gaza power station grounding project at UWE, 2010. ([e-mail])
[9]	H. Baalousha, “Analysis of Nitrate Occurrence and Dis- tribution in Groundwater in the Gaza Strip Using Major Ion Chemistry,” Global NEST Journal, Vol. 10, No. 3, 2008, pp. 337-349.
[10]	Google Earth, “Gaza Aerial View,” 2010. http://www.google.co.uk/intl/en_uk/earth/index.html
[11]	D. L. Garrett, J. G. Myers and S. G. Patel, “Determina- tion of Maximum Substation Grounding System Fault Current Using Graphical Analysis,” IEEE Power Engi- neering Review, Vol. PER-7, No. 7, 1987, pp. 49-50. doi:10.1109/MPER.1987.5526974