Sulphur hexafluoride in modern medium-voltage switchgear: Advantages, hazards and environmental impact Scientific paper

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Published: May 13, 2024
Updated: 13.05.2024
DOI: https://doi.org/10.2298/JSC231203008B
Keywords:
greenhouse gas switching device persistence toxicity ALOHA® software

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Aleksandar Bošković
University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
https://orcid.org/0000-0001-5779-6028
Maja Sremački
University of Novi Sad, Faculty of technical sciences, Department of Environmental engineering and occupational safety and health, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
https://orcid.org/0000-0002-0671-5117
Sunčica Vještica
Metropolitan University, Faculty of Applied Ecology Futura, Požeška 83a, 11000 Belgrade, Serbia
https://orcid.org/0000-0002-7297-1688
Aleksandra Čavić
Faculty of Economics and Engineering Management, FIMEK, Cvećarska 2, 21000 Novi Sad, Serbia
https://orcid.org/0000-0002-7947-2064
Nada Marković
University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
Branislav Borovac
University of Novi Sad, Faculty of Technical Sciences, Trg Dositeja Obradovića 6, 21000 Novi Sad, Serbia
https://orcid.org/0000-0001-7446-1027

Abstract

Sulphur hexafluoride is synthesised as a persistent and non-toxic gas with an exceptional dielectric strength. In contemporary medium-voltage switchgear within power distribution systems, SF6 gas is used for the insulation and the extinction of electric arc. The application of SF6 has advantages in terms of gas physicochemical characteristics and performance; the dimensions, the cost-effectiveness, the reliability of the switchgear equipment and the dur­ation, as well as the cost of maintenance were significantly reduced. SF6 is a known greenhouse gas, which tends to accumulate in the lungs, inducing oxy­gen depletion and respiratory complications. The by-products of SF6 formed during the electric arc can be harmful and toxic. The equipment containing SF6 is being replaced in the EU and worldwide. Using ALOHA® software the scen­arios of leakage for SF6 and by-products were modelled in urban areas, where the switchgear is frequently placed. In areas where the circulation of wind is lower (urban areas), in hazardous situations, it is not possible to depend on high dispersion levels or minimisation of concentration and threat. The models have shown that SF6 poses an environmental problem and its by-products cause a serious health hazard in the case of leakage in urban areas, rendering red threat zones from 10 to 60 m in radius.

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How to Cite
[1]
A. . Bošković, M. Sremački, S. . Vještica, A. Čavić, N. Marković, and B. Borovac, “Sulphur hexafluoride in modern medium-voltage switchgear: Advantages, hazards and environmental impact: Scientific paper”, J. Serb. Chem. Soc., vol. 89, no. 5, pp. 693–704, May 2024.
Issue
Vol. 89 No. 5 (2024): Theme issue honoring 15th anniversary of the election of Professor Emeritus at the University in Novi Sad
Section
15 years of Professor Emeritus UNS
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