Е-Публикации
Технически университет - София

Abstract: The report examines issues related to different options for connecting a group of wind farms to a mediumvoltage electricity grid: connection with a single power line, with a double power line, as well as using majority redundancy. The criteria for selecting an option for connecting a group of wind farms to the electricity grid are presented. A methodology for assessing the economic and reliability-related indicators is developed. A numerical experiment is conducted to determine the economic and reliability indicators for the three different options of connecting wind farms to a specific electrical grid. Results are obtained, which show the significant importance of the majority redundancy advantages.

References

1. S. I. Nedelcheva. "Electrical networks and systems with decentralized generating sources, " Monograph. ISBN 978-619-167-348-3, Sofia, Publishing House of TU-Sofia, 2018.
2. S. I. Nedeltcheva, J. N. Bakardjieva. "Design of the achievement of smart grid, " Ukrainian journal of educational studies and information technology, eISSN 2521-1234, T.4, No 6, 2016.
3. S. I. Nedelcheva. "Electrical Networks, " ISBN 954-438-488-X, Sofia, Publishing House of TU-Sofia, 2005.
4. S. I. Nedelcheva. "Influence of decentralized energy sources on electrical networks, " Journal of Energy, ISSN 0324-1521, No. 4, 2004, pp. 27-32.
5. S. I. Nedeltcheva, P. Poggi, G. Notton, M. Muselli. "Production decentralisee d'energie electrique sur le reseau electrique, " Bastia, IRAB, Journees ENR Les energies renouvelables : l'alternative sans crise, Bastia, France, 31 mars-1 Avril 2005, pp. 84-100.
6. A. M. Ivanov. "Limitation of short-circuit currents in electrical networks with decentralized sources, " Dissertation abstract. Technical University of Sofia, 2014.
7. S. I. Nedeltcheva, N. A. Nedeltchev, "Analysis of short circuit currents in distribution networks with dispersed generation, " FIRST INTERNATIONAL SYMPOSIUM ON ENVIRONMENT IDENTITIES AND MEDITERRANEAN AREA, ISEIM-2006, IEEE France section, CD ISEIM-2006, ISBN 1-4244-0232-8, IEEE Catalog Number 06EX13229C, Paper V2s437, Corte-Ajaccio, 10-13.07.2006, http://ieeexplore.ieee.org/Xplore/l
8. K. V. Raykov. "Operational reliability of connection schemes of photovoltaic systems with three single-phase grid inverters, " 2024 9th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). DOI: 10.1109/EEAE60309.2024.10600608.
9. S. I. Nedelcheva, V.J.Chobanov. "Multicriteria optimization of the compensated reactive power in the integrated branches of PV power plants, " 24th European Photovoltaic Solar Energy Conference and Exhibition, Session Reference 4BV.1.50, CCH-Congress Center and International Fair Hamburg, Germany, 21-25 September 2009, pp.3762-3765.
10. H. S. Ilchev. "Risk assessment of a base power deficit in the electric power system, " 2024 9th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). 10.1109/EEAE60309.2024.10600622
11. E. P. Vasileva. "Methodology for reliability assessment of distribution networks with decentralized energy resources connected, " 2022 57th International Scientific Conference on Information, Communication and Energy Systems and Technologies (ICEST). 10.1109/ICEST55168.2022.9828731.
12. N. A. Nedelchev, S. I. Nedelcheva. "Peculiarities of organizing the work of protection devices in distribution grids after switching decentralized energy sources, " Journal of Energy, ISSN 0324-1521, No. 5, 2004, pp. 52-55.
13. J. N. Bakardzhieva. "Coordination of the operation of relay protection devices with the automatic introduction of backup power supply, " Journal "Notices of TU-Sliven", ISSN 1312-3920, No. 1, 2014. pp.10-14.
14. M. K. Hassan. "Variant Study of the Electrical Energy Supply to an Autonomous Consumer by Means of Wind Power Plants, " 2024 9th International Conference on Energy Efficiency and Agricultural Engineering (EE&AE). 10.1109/EEAE60309.2024.10600619
15. H. S. Ilchev. "Influence of the neutral grounding mode on the reliability of actively adaptive electric grids, " ICEER 2023-10h International Conference on Energy and Environment Research: "Sustainable Development with Renewable Energy", DOI: 10.1007/978-3-031-54394-4-3.
16. A. G. Andonov, J. N. Bakardzhieva. "Criteria for choosing the optimal configuration and a node for sectioning the branches in a medium voltage distribution network, " Journal "Energetika", issue 6, 2012, pp. 52-57.
17. J. N. Bakardzhieva, M. K. Hassan. "Structures of smart distribution grids for medium voltage, " Proceedings of TU-Sliven, ISSN 1312-3920, No. 1, 2020. pp.29-35.
18. M. K. Hassan. "Variant study of the connection of decentralized generating sources to the distribution grid, " Bulletin of the Technical University of Sliven, ISSN 1312-3920, No. 1, 2021. pp.24-28.

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