Passive electric distribution networks are being transformed into active ones, which are low-capacity power plants, owing to the integration of small generating facilities and local power supply systems based on them [local intelligent power systems (Minigrid) and active energy complexes (AEC)]. This transformation requires the development of effective decentralized control systems for the modes of such networks, since the conventional centralized management is expensive. This paper presents the results of a study conducted on the possibilities of decentralized synchronization of the active parts of an electrical network that remain operational in the isolated mode, when restoring the integrity and normal mode of the network after emergency or accident-prevention separation. The complexity of the synchronization lies in the need to perform it on uncontrolled network switching devices (switches, reclosers) that are remote from power plants, with the quasisteady-state parameters of post-emergency modes, which, in general, significantly deviate from the nominal ones. This paper proposes a method for a decentralized control of the synchronization of small generating facilities of the separated parts of an electric network and of the network switching devices, which ensures, with a special control of the excitation of generators and power (frequency), the scanning of the synchronization conditions, and a successful synchronization without data exchange between the control devices involved in the process. The proposed method is multi-agent by type and based on the independent behavior of each device operating according to common rules. The operability of the method was tested on a physical model of power systems.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
A. G. Fishov, “Technical and economic aspects of creating minigrids and their integration with centralized energy supply,” Énergetik, No. 4, 27 – 34 (2021).
A. G. Fishov, B. B. Mukatov, and I. A. Efremov, “Investigation of the reconfiguration of electrical networks with distributed generation in emergency modes,” Dokl. Akad. Nauk Vyssh. Shkoly Ross. Fed., No. 4(25), 90 – 103 (2014).
A. Yu. Azorin, “Automatic synchronization of “Islands” during the restoration of power supply systems with distributed generation,” Vestn. Irkutsk. Gos. Tekhn. Univ., 22(8), 83 – 94 (2018).
A. G. Fishov, A. Kh. Gulomzoda, E. S. Ivkin, and R. Yu. Semendyaev, “Synchronization of Microgrid with an external electrical network and between each other in normal and post-emergency modes with different combination schemes,” Rel. Zashch. Avtomat., No. 2(43), 32 – 42 (2021).
A. Bellini, S. Bifaretti, and F. Giannini, “A robust synchronization method for centralized microgrids,” IEEE Trans. Ind. Appl., 51(2), 1602 – 1609 (2015).
H. Laaksonen, K. Kauhaniemi, “Synchronized re-connection of island operated LV microgrid back to utility grid,” in: IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT Europe), IEEE (2010), pp. 1 – 8.
K.-Y. Choi et al., “Selective frequency synchronization technique for fast grid connection of islanded microgrid using prediction method,” Int. J. Electric. Power Energy Syst., 111, 114 – 124 (2019).
S. Shah et al., “VSC-based active synchronizer for generators,” IEEE Trans. Energy Convers, 33(1), 116 – 125 (2018).
C. Cho et al., “Active synchronizing control of a microgrid,” IEEE Trans. Power Electron., 26(12), 3707 – 3719 (2011).
Z. Chen et al., “A synchronization control method for micro-grid with droop control,” in: IEEE Energy Conversion Congress and Exposition (ECCE), IEEE (2015), pp. 519 – 524.
I. J. Balaguer et al., “Control for grid-connected and intentional islanding operations of distributed power generation,” IEEE Trans. Ind. Electron., 58(1), 147 – 157 (2011).
M. Litwin, D. Zielinski, and K. Gopakumar, “Remote microgrid synchronization without measurements at the point of common coupling,” IEEE Access, 8, 212753 – 212764 (2020).
RF Pat. No. 2752693, IPC H 02J3/42/; A. G. Fishov, A. Kh. Gulomzoda, “A method for remote synchronization and restoration of the normal mode of an electrical network emergency separated with generators,” owner Novosibirsk State Technical University, No. 2020131758A; appl. 09/28/2020; publ. 07/30/2021, Byull., No. 22 (2021).
Multifunctional Complex of Emergency Control Equipment. http://www.iaes.ru/%D1%83%D1%81%D1%82%D1%80%D0%BE%D0%B9%D1%81%D1%82%D0%B2%D0%B0
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Élektricheskie Stantsii, No. 11, November 2022, pp. 21 – 29. https://doi.org/10.34831/EP.2022.1096.11.003
Rights and permissions
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
About this article
Cite this article
Fishov, A.G., Osincev, A.A. & Gulomzoda, A.K. Synchronization of the Parts of Electrical Networks with Distributed Energy Sources After Emergency or Accident-Prevention Separation. Power Technol Eng 57, 136–144 (2023). https://doi.org/10.1007/s10749-023-01634-5
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10749-023-01634-5