Е-Публикации
Технически университет - София

Abstract: The paper studies the magnitude of the voltage, induced in a disconnected grounded conductor of an overhead power line by the unbroken conductors. The electromagnetic fields, generated by overhead power lines, are considered. The factors, influencing the magnitude of the induced voltage, are described. A methodology for calculating the contact voltages and the magnitude of the electric current through a human body with the grounded phase conductor disconnected is presented. A numerical experiment is carried out to determine the voltage, induced by the functioning conductors and the current through a human being when a phase conductor is disconnected from a three-phase power line with rated voltage of 20 kV.

References

1. Nedelcheva S.I., A.M.Ivanov. Technical Safety. Tests. ISBN 978-619-167-114-4, Sofia, Publishing House of TU-Sofia, 2014.
2. Matsankov M., Petrov S. Modeling of the induced voltage in a disconnected ungrounded conductor of a three-phase power line. SIMULTECH 2021, 7-9 Juli, 2021.
3. Matsankov М., S.Petrov. Modeling of the induced voltage in a disconnected grounded conductor of a three-phase power line. 2021 International Conference on Smart City and Green Energy (ICSCGE). Hangzhou, China. 20-22 November 2021.
4. Barbier Р. Р. Etude et justification des courants de contact induits par les lignes à haute tension dans le parc résidentiel belge et leurs incidences sur la population. Thèse de doctorat, Université de Liège, 2014.
5. Lilien J. and Al. "Effects of extremely low frequency electromagnetic fields (ELF) on human beings. An electrical engineer viewpoint," Revue E tijdschrift, vol. 124, no. 3, septembre 2008.
6. Hoeffelman J. Assessment of the Electric and Magnetic field levels in the vinicity of the HV overhead power lines in Belgium. CIGRE session papers Group C3, Paris, 2009.
7. Andreev A.I., M.B. Medvedeva. Electrical safety. Khabarovsk, Izd.DVGUPS, 2010.
8. Nedelchev N.A., S.I.Nedelcheva. High Voltage Technique. Part One. ISBN 978-619-167-223-3. Sofia, Publishing House of TU-Sofia, 2015.
9. Nedelcheva S.I. Electrical networks. ISBN 954-438-488-X, Sofia, Publishing House of TU-Sofia, 2005
10. IEC TS 60479-1. Effects of cu rren t on human be ings and l ivestock. ISBN 978-2-8322-0000-0.
11. P. Tsvetkova. Optimum Power from Decentralized Sources in the Connecting Branches of Medium Voltage Distribution Networks, 2023 The Eighth Junior Conference on Lighting. LIGHTING 2023, DOI: 10.1109/Lighting59819.2023.10299417.
12. Nedeltcheva S. I., Tsvetkova P. I. Approach to short-term planning of the development of distribution electrical networks, ICEER 2023 - 10h International Conference on Energy and Environment Research: “Sustainable Development with Renewable Energy”, DOI: 10.1007/978-3-031-54394-4_2
13. Savov N. V. Options for Power Supplying an Object by Medium or High Voltage. 2024 9th Junior Conference on Lighting, Lighting 2024, DOI: 10.1109/Lighting62260.2024.10590671.
14. Raykov K. V. Improvement of energy efficiency in distribution networks. The International Journal of Engineering and Science (IJES), vol. 11, issue 11, pp. 32-34, 2022, India, DOI 10.9790/1813-11113234.
15. Raykova V. O., Raykov K. V. Study of the change of ultrafiltration polymer membranes specific electrical conductivity. 2024 9th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). DOI: 10.1109/EEAE60309.2024.10600557.
16. Hassan M. K. Optimal power factor of synchronous motors in operating conditions. 2022 8th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). DOI: 10.1109/EEAE53789.2022.9831363.
17. Hassan M., Ramadan F. Study of the distribution of scattered magnetic conductivities in a "Sh"-shaped electromagnet. X-th jubilee national scientific conference with international participation "Active-adaptive electric networks'24". 27-28 September 2024. Burgas. News of TUSliven No 5, 2024, Bulgaria, ISSN 1312-3920.
18. Vasileva E. P. Optimization of Electricity Losses During Electricity Transmission and Distribution. 2024 59th International Scientific Conference on Information, Communication and Energy Systems and Technologies, ICEST 2024, DOI: 10.1109/ICEST62335.2024.10639640.
19. Petkova P. Advantages and Disadvantages of Energy Storage Systems for Energy Produced by Small and Medium Photovoltaic Systems. 2024 9th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). DOI: 10.1109/EEAE60309.2024.10600613.
20. Atanasov V. Effects of Contingency Overheating of Hermitized Distribution Transformers. 2023 15th Electrical Engineering Faculty Conference (BulEF). DOI: 10.1109/BulEF59783.2023.10406258.

Issue