DOI: https://doi.org/10.15587/1729-4061.2018.144925

Improvement of safety of autonomous electrical installations by implementing a method for calculating the electrolytic grounding electrodes parameters

Pavlo Budanov, Kostiantyn Brovko, Artem Cherniuk, Iryna Pantielieieva, Yuliya Oliynyk, Nataliia Shmatko, Pavlo Vasyuchenko

Abstract


We have solved the task of safety improvement in the grounding process of autonomous mobile electrical installations. Existing procedures for the calculation of normalized resistance of grounding electrodes in electric installations have been examined and studied. Their main drawbacks have been revealed: the difficulty and complexity of calculations; the probabilistic and approximate character; the use of source data taken to calculate the electrophysical parameters of stationary grounding electrodes; the calculations do not account for the structural-phase structure of soil and the volume of electrolyte. Based on the application of percolation theory and the apparatus of fractal-cluster geometry, we have modeled the process of electrolytic grounding in heterogeneous soils of different porous structure, which possess the percolation and fractal properties. A physical model of the process of electrolytic grounding has been developed, which takes into consideration the soil structure properties when changing the fractal dimensionality of a cluster over a certain range that forms the electrolytic grounding conductor with the normalized resistance. It has been shown that the model of conductivity of the electrolytic grounding electrode is defined by the soil electrical conductivity in a percolation channel of the porous structure of soil and can be considered as a function of the volumetric concentration of the electrolyte and the size of the volumetric structure of the electrolytic percolation cluster. We have derived analytical expressions to relate the normalized resistance of electrolytic grounding conductors and the specific resistivity of soil to the fractal dimensionality, volume of the electrolyte, the number of pores to the electrolyte, density of a geometrical volumetric body. We have improved a method for calculating the electrophysical parameters of electrolytic grounding conductors, based on accounting for the main linear size of the cluster of an electrolytic volumetric body, which coincides with the electrolyte penetration depth for various soil structures. We have established conditions for conductivity of the electrolytic grounding conductor in order to ensure safety during operation of the autonomous mobile electrical installation

Keywords


grounding process; electrolytic grounding conductors; percolation and fractal properties; normalized impedance

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References


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Budanov, P., Brovko, K., Cherniuk, A., Vasyuchenko, P., Khomenko, V. (2018). Improving the reliability of information­control systems at power generation facilities based on the fractal­cluster theory. Eastern-European Journal of Enterprise Technologies, 2 (9 (92)), 4–12. doi: https://doi.org/10.15587/1729-4061.2018.126427


GOST Style Citations


Henaish A., Attwa M. Internal structural architecture of a soft-linkage transfer zone using outcrop and DC resistivity data: Implications for preliminary engineering assessment // Engineering Geology. 2018. Vol. 244. P. 1–13. doi: https://doi.org/10.1016/j.enggeo.2018.07.018 

The bandung soil characteristics as a function of injection current frequency for electrical grounding systems / Anggoro B., Burhan J., Mohamad R. T., Zulkefle A. A. // International Journal of Applied Engineering Research. 2016. Vol. 11, Issue 2. P. 1361–1368.

Colella P., Pons E., Tommasini R. Dangerous touch voltages in buildings: The impact of extraneous conductive parts in risk mitigation // Electric Power Systems Research. 2017. Vol. 147. P. 263–271. doi: https://doi.org/10.1016/j.epsr.2017.03.006 

A Fault Section Location Method for Small Current Neutral Grounding System Based on Energy Relative Entropy of Generalized S-Transform / He L., Shi C., Yan Z., Cui J., Zhang B. // Diangong Jishu Xuebao/Transactions of China Electrotechnical Society. 2017. Vol. 32, Issue 8. P. 274–280.

Yang T., Qiu W., Li J. Study of reducing ground resistance for transmission tower on rocky mountain tops with constrained area // IEEJ Transactions on Electrical and Electronic Engineering. 2015. Vol. 10, Issue 3. P. 249–255. doi: https://doi.org/10.1002/tee.22080 

Combining Floating and Grounded LNG Plant, LNG Storage and Power Units Offshore for Gas Field Developments / Takata N., Knox J., Sharma P., Winkler D. // Offshore Technology Conference. 2018. doi: https://doi.org/10.4043/28921-ms 

Kim H.-G., Lee B.-H. Improvements of Grounding Performances Associated with Soil Ionization under Impulse Voltages // The Transactions of The Korean Institute of Electrical Engineers. 2016. Vol. 65, Issue 12. P. 1971–1978. doi: https://doi.org/10.5370/kiee.2016.65.12.1971 

A case study on ground resistance based on copper electrode vs. galvanized iron electrode / Ahmad A., Saroni M. R. A., Razak I. A. W. A., Ahmad S. // 2014 IEEE International Conference on Power and Energy (PECon). 2014. doi: https://doi.org/10.1109/pecon.2014.7062479 

Chanklin W., Laowongkotr J., Felipe Chibante L. P. Electrical property validation of percolation modeling in different polymer structures of carbon-based nanocomposites // Materials Today Communications. 2018. Vol. 17. P. 153–160. doi: https://doi.org/10.1016/j.mtcomm.2018.09.004 

Wang S., Zhang J., Yue X. Multiple robustness assessment method for understanding structural and functional characteristics of the power network // Physica A: Statistical Mechanics and its Applications. 2018. Vol. 510. P. 261–270. doi: https://doi.org/10.1016/j.physa.2018.06.117 

Demin V. I., Lomonosova D. V. Primenenie poverhnostnyh perenosnyh zazemliteley elektroliticheskogo tipa dlya peredvizhnyh elektroustanovok // Trudy XIII Mezhdunarodnoy nauchno-prakticheskoy internet-konferencii. Penza, 2016. P. 308–314.

Proverka sostoyaniya sistemy uravnivaniya potencialov energoob'ektov / Glebov O. Yu., Kiprich S. V., Koliushko G. M., Plichko A. V. // Elektrooborudovanie: ekspluataciya i remont. 2017. Issue 12. P. 32–41.

Koliushko G. M., Koliushko D. G., Rudenko S. S. K voprosu povysheniya tochnosti rascheta normiruemyh parametrov zazemlyayushchih ustroystv deystvuyushchih elektroustanovok // Elektrotekhnika i elektromekhanika. 2014. Issue 4. P. 65–70.

Budanov P. F., Chernyuk A. M. Eksperimental'noe opredelenie elektrofizicheskih parametrov poverhnostnyh elektroliticheskih zazemliteley peredvizhnyh elektroustanovok // Visnyk NTU «KhPI». 2013. Issue 17 (990). P. 8–17.

Chernyuk A. M. Analiz metodov modelirovaniya strukturno-geometricheskih form provodyashchih poristyh sred // Energosberezhenie, energetika, energoaudit. 2015. Issue 1. P. 46–53.

Budanov P. F., Cherniuk A. M. Model perkoliatsiyi providnosti protsesu elektrolitychnoho zazemlennia // Systemy ozbroiennia i viyskova tekhnika. 2012. Issue 2 (30). P. 123–128.

Budanov P. F., Chernyuk A. M. Opredelenie parametrov elektroliticheskogo zazemleniya v peschanom grunte. Kharkiv, 2014. 122 p.

Improving the reliability of information­control systems at power generation facilities based on the fractal­cluster theory / Budanov P., Brovko K., Cherniuk A., Vasyuchenko P., Khomenko V. // Eastern-European Journal of Enterprise Technologies. 2018. Vol. 2, Issue 9 (92). P. 4–12. doi: https://doi.org/10.15587/1729-4061.2018.126427 







Copyright (c) 2018 Pavlo Budanov, Kostiantyn Brovko, Artem Cherniuk, Iryna Pantielieieva, Yuliya Oliynyk, Nataliia Shmatko, Pavlo Vasyuchenko

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ISSN (print) 1729-3774, ISSN (on-line) 1729-4061