The article investigates the conditions of electrical safety in electrical grids with various grounding systems (TN, TT, IT) used at industrial enterprises. The relevance of the study, conditioned by the increased risk of injuries at power production facilities and the need for improvement of approaches to ensuring occupational safety, has been determined.
The study aims to conduct a comparative assessment of electrical safety conditions in grids with grounded and isolated neutrals by analysing contact voltage during emergencies. The investigation at a production factory where conditions of potential contact between a human and electrified equipment has been described. The use of analytical expressions to calculate contact voltage considering grid parameters and ambient conditions has been demonstrated. The dependence of contact voltage on a chosen grounding system and grid parameters has been detected. It is stated that the obtained data can be used to develop recommendations on selecting optimal grounding systems in electrical grids applied at industrial enterprises in order to increase the safety level and reduce the risk of electric shock.
The importance of features of a specific electrical grid and operational conditions, as well as using up-to-date protection means such as a protection tripping unit, in order to increase the elecrtical safety level, has been highlighted.
2. Klyuev R.V., Gavrilova A.A. Ensuring Occupational Safety of Miners by Improving Power Grids for Underground Ore Mining. Bezopasnost Truda v Promyshlennosti = Occupational Safety in Industry. 2024. № 6. pp. 72–78. (In Russ.). DOI: 10.24000/0409-2961-2024-6-72-78
3. Podoprigora D.G., Sabukevich V.S., Korobov G.Y., Nguen V.T. Justification of Developed System Measures to Increase Productivity of Wells in Eastern Part of Pechora Sea Oil Field. International Journal of Engineering. 2024. Vol. 37. Iss. 11. pp. 2303–2313. DOI: 10.5829/ije.2024.37.11b.15
4. Ivanova E.V., Martyushev N.V., Musatova A.I., Kukartsev V.V., Karlina A.I. Ivanova E.V., Musatova A.I., Karlina A.I. Multivariate approach to justification a rational payback period for an investment project of an electric steelmaking shop. Chernye Metally = Ferrous Metals journal. 2023. № 8. рр. 74–80. (In Russ.). DOI: 10.17580/chm.2023.08.13
5. Tynchenko Y.A., Kukartsev V.V., Gladkov A.A., Panfilova T.A. Assessment of technical water quality in mining based on machine learning methods. Ustoychivoe razvitie gornykh territoriy = Sustainable Development of Mountain Territories. 2024. Vol. 16. Iss. 1. pp. 56–69. (In Russ.). DOI: 10.21177/1998-4502-2024-16-1-56-69
6. Pryalukhin A.F., Martyushev N.V., Malozyomov B.V., Klyuev R.V., Filina O.A., Konyukhov V.Yu., Makarov A.A. Improvement of operational reliability of units and elements of dump trucks taking into account the least reliable elements of the system. World Electric Vehicle Journal. 2024. Vol. 15. Iss. 8. DOI: 10.3390/wevj15080365
7. Kuzkin A.Y., Zadkov D.A., Skeeba V.Y., Kukartsev V.V., Tynchenko Y.A. Viscoplastic properties of chromium-nickel steel in short-term creep under constant stress. Part 1. CIS Iron and Steel Review. 2024. Vol. 27. № 1. pp. 71–77. DOI: 10.17580/cisisr.2024.01.11
8. Martyushev N., Kozlov V., Qi M., Han Z., Bovkun A. Milling martensitic steel blanks obtained using additive technologies. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2023. Vol. 25. № 4. pp. 74–89. (In Russ). DOI: 10.17212/1994-6309-2023-25.4-74-89
9. Malozyomov B.V., Tynchenko V.S., Kukartsev V.A., Bashmur K.A., Panfilova T.A. Investigation of properties of laminar antiferromagnetic nanostructures. CIS Iron and Steel Review. 2024. Vol. 27. № 1. pp. 84–90. DOI: 10.17580/cisisr.2024.01.13
10. Konyukhov V.Yu., Oparina T.A., Matasova I.Y., Modina M.A., Martyushev N.V. Ecologization of underground coal mining by means of ash use in backfill preparation. Gornyy informatsionno-analiticheskiy byulleten (nauchno-tekhnicheskiy zhurnal) = Mining Informational and Analytical Bulletin (Scientific and Technical Journal). 2024. № 10. pp. 123–135. DOI: 10.25018/0236_1493_2024_10_0_123
11. Semernik I.V., Khekert E.V., Bender O.V., Tarasenko A.A., Samonova C.V. Modeling of the Chaotic Signals Propagation Through a Wireless Underwater Optical Communication Channel. Applications in Electronics and Computing Systems (AECS 2022). Lecture Notes in Electrical Engineering. 2023. Vol. 971. pp. 176–187. DOI: 10.1007/978-3-031-20631-3_19
12. Panfilova T.A., Kukartsev V.A., Tynchenko V.S., Mikhalev A.S., Xiaogang Wu. Treatment of wastewater from mining industrial enterprises from phenols. Gornyy informatsionno-analiticheskiy byulleten (nauchno-tekhnicheskiy zhurnal) = Mining Informational and Analytical Bulletin (Scientific and Technical Journal). 2024. № 7-1. pp. 72–82. (In Russ). DOI: 10.25018/0236_1493_2024_71_0_72
13. Larichev P., Tynchenko V., Nekrasov I. Application of Petri Nets for Modeling Ore Flows to Create Dynamic Management and Quality Control System in Mineral Resource Complexes. Proceedings International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM 2024). 2024. pp. 1089–1094.
14. Afanaseva O.V., Bezyukov O.K., Ignatenko A.A. Method for assessing the relationship between the characteristics of vibroactivity and the design parameters of a marine diesel. Proceedings on Engineering Sciences. 2023. Vol. 5. № S2. pp. 415–422. DOI: 10.24874/PES.SI.02.017
15. Sokolov A.A., Fomenko V.A., Aksenova M.A., Malozyemov B.V., Kerimzhanova M.F. Development of a methodology for radon pollution studies based on algorithms taking into account the influence of constant mountain-valley winds. Applied Chemical Engineering. 2024. Vol. 7. Iss. 2. DOI: 10.59429/ace.v7i2.1865