Resilence Control of DC Microgrid Integrated with Multi-Nanogrids Considering Connected-Islanded States

IF 6.9 2区 工程技术 Q2 ENERGY & FUELS CSEE Journal of Power and Energy Systems Pub Date : 2023-09-08 DOI:10.17775/CSEEJPES.2023.03480
Hossien Faraji;Reza Hemmati;Pierluigi Siano
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Abstract

In this paper, a DC microgrid (DCMG) integrated with a set of nano-grids (NG) is studied. DCMG exchanges predetermined active and reactive power with the upstream network. DCMG and NGs are coordinately controlled and managed in such a way the exchanged P-Q power with external grid are kept on scheduled level following all events and operating conditions. The proposed control system, in addition to the ability of mutual support between DCMG and NGs, makes NGs support each other in critical situations. On the other hand, in all operating conditions, DCMG not only feeds three-phase loads with time-varying active and reactive power on the grid side but also injects constant active power into the grid. During events, NGs support each other, NGs support DCMG, and DCMG supports NGs. Such control strategies are realized by the proposed control method to increase resilience of the system. For these purposes, all resources and loads in DCMG and NGs are equipped with individual controllers. Then, a central control unit analyzes, monitors, and regularizes performance of individual controllers in DCMG and NGs. Nonlinear simulations show the proposed model can effectively control DCMG and NGs under normal and critical conditions.
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考虑并网与孤岛状态的多纳电网集成直流微电网的裕度控制
本文研究了与一组纳米电网(NG)集成的直流微电网(DCMG)。DCMG 与上游网络交换预定的有功和无功功率。通过对 DCMG 和 NG 进行协调控制和管理,可以在所有事件和运行条件下将与外部电网交换的 P-Q 功率保持在预定水平上。除了 DCMG 和 NG 之间的相互支持能力外,建议的控制系统还能使 NG 在危急情况下相互支持。另一方面,在所有运行条件下,DCMG 不仅向电网侧的三相负载馈送随时间变化的有功和无功功率,还向电网注入恒定的有功功率。在事件发生时,NG 相互支持,NG 支持 DCMG,DCMG 支持 NG。这种控制策略通过建议的控制方法来实现,以提高系统的弹性。为此,DCMG 和 NG 中的所有资源和负载都配备了单独的控制器。然后,中央控制单元对 DCMG 和 NG 中各个控制器的性能进行分析、监控和调节。非线性模拟显示,所提出的模型能在正常和危急情况下有效控制 DCMG 和 NG。
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来源期刊
CiteScore
11.80
自引率
12.70%
发文量
389
审稿时长
26 weeks
期刊介绍: The CSEE Journal of Power and Energy Systems (JPES) is an international bimonthly journal published by the Chinese Society for Electrical Engineering (CSEE) in collaboration with CEPRI (China Electric Power Research Institute) and IEEE (The Institute of Electrical and Electronics Engineers) Inc. Indexed by SCI, Scopus, INSPEC, CSAD (Chinese Science Abstracts Database), DOAJ, and ProQuest, it serves as a platform for reporting cutting-edge theories, methods, technologies, and applications shaping the development of power systems in energy transition. The journal offers authors an international platform to enhance the reach and impact of their contributions.
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