Improving Grounding System for Oil Tanks Using Finite Element Method, Taking into Account the Frequency Dependence of Soil Parameters | ||
Al-Rafidain Engineering Journal (AREJ) | ||
Article 9, Volume 27, Issue 2, September 2022, Pages 92-100 PDF (2.02 M) | ||
Document Type: Research Paper | ||
DOI: 10.33899/rengj.2022.133281.1165 | ||
Authors | ||
Wejdan I. Awad AlAli* ; Riyadh Zaki Sabry | ||
Electrical Engineering Department, Collage of Engineering, University of Mosul, Mosul, Iraq | ||
Abstract | ||
This work was devoted to the development of a simulation model of the grounding and lightning protection system for oil tanks, taking into account the frequency dependence of soil parameters, where we, based on the equations mentioned in previous studies, designed a grounding model for an oil tank taking into account the frequency dependence of soil parameters by using the finite elements method. and for different configurations, where it was observed that the grounding potential rise GPR was significantly reduced at high frequencies, especially in the case of high soil resistivity, the percentage of decrease in the grounding potential rise in the case of dry soil for the studied site 1266.65 Ω.m and for wet soil 596.27 Ω.m, respectively, 22.8% and 23.8%, respectively. and it was pointed out the necessity of conducting soil resistivity measurements before the tank construction process, and the need to use the network configuration of the oil tank grounding model in some cases where the soil resistivity is high and it is difficult to eliminate the effect of lightning current with the typical design mentioned in NFPA 780 for tank grounding. | ||
Keywords | ||
grounding of oil tanks; grounding potential rise GPR; lightning protection; finite element method FEM; CYMGRD | ||
References | ||
[1] H. Hai-yan and L. Q., “Research on lightning sparks discharge and protection measures of large floating roof tank(2012).” International Conference on Lightning Protection (ICLP) 2012. [2] A. Necci, G. Antonioni, S. Bonvicini, and V. Cozzani, “Quantitative assessment of risk due to major accidents triggered by lightning,” Reliability Engineering and System Safety, vol. 154. pp. 60–72, 2016. doi: 10.1016/j.ress.2016.05.009. [3] H. Neyshabouri and M. N., “Transient investigations on lightning overvoltages applied on oil tanks roof considering grounding configurations.” Electrical Engineering 2022. [4] A. Galván and C. G., “Protection of oil storage tanks against direct lightning strikes: Self protection scheme or standalone LPS?,” in 2013 International Symposium on Lightning Protection, pp. 309–313 2013. [5] I. S. Sukhachev, P. V. Chepur, S. V. Sidorov, V. V. Sushkov, I. S. Latypov, and G. Y., “Development of a simulation model of a grounding and lightning protection system for oil storage tanks, taking into account soil heterogeneity,” Neft. Khozyaystvo - Oil Ind. 2021. [6] C. Gomes, “Lightning Science, Engineering, and Economic Implications for Developing Countries,” Lecture Notes in Electrical Engineering, vol. 780. pp. 173–201 2020. [7] R. Alipio and S. Visacro, “Impulse efficiency of grounding electrodes: Effect of frequency-dependent soil parameters,” IEEE Transactions on Power Delivery, vol. 29, no. 2. pp. 716–723, 2014. doi: 10.1109/TPWRD.2013.2278817. [8] R. Alipio and S. Visacro, “Frequency Dependence of Soil Parameters: Experimental Results, Predicting Formula and Influence on the Lightning Response of Grounding Electrodes,” IEEE Trans. Electromagn. Compat., vol. 55, no. 1, pp. 132–139, 2013, doi: 10.1109/TEMC.2012.2210227. [9] Q. Li et al., “On the influence of the soil stratification and frequency-dependent parameters on lightning electromagnetic fields,” Electr. Power Syst. Res., vol. 178, 2020, doi: 10.1016/j.epsr.2019.106047. [10] S. Visacro, R. Alipio, C. Pereira, M. Guimarães, and M. A. O. S., “Lightning response of grounding grids: Simulated and experimental results,” IEEE Transactions on Electromagnetic Compatibility. pp. 121–127 2015. [11] T. Christine Porter, “NFPA 780 Standard for the Installation of Lightning Protection Systems,” in www.nfpa.org, pp. 31–32 2020. [12] S. Visacro, R. Alipio, M. H. Murta Vale, and C. P., “The response of grounding electrodes to lightning currents: The effect of frequency-dependent soil resistivity and permittivity,” IEEE Trans. Electromagn. Compat., pp. 401–406 2011. [13] S. Ilenin, Z. Conka, M. Ivancak, M. Kolcun, and G. Morva, “New way in design of a power station earthing system,” CANDO-EPE 2018 - Proceedings IEEE International Conference and Workshop in Obuda on Electrical and Power Engineering. pp. 163–167, 2019. doi: 10.1109/CANDO-EPE.2018.8601127. [14] S. k. Algehiche and R. Sabry, “Studying the Effect of Adding the Concrete Reinforcement Grid Rods to the Grounding System of the Mosul Secondary University Distribution Station,” Al-Rafidain Eng. J., vol. 26, no. 2, pp. 179–186, 2021, doi: 10.33899/rengj.2021.130845.1122. [15] “IEEE Guide for Safety in AC Substation Grounding.” doi: DOI: 10.1109/IEEESTD.2015.7109078. [16] International Standard IEC 62305, “Lightning Protection Handbook,” Iec 62305-1. 2010. | ||
Statistics Article View: 372 PDF Download: 1,171 |