Load Sharing Strategy Incorporating Power Limits in Islanded Inverter-Based Microgrids
Load Sharing Strategy Incorporating Power Limits in Islanded Inverter-Based Microgrids
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DOI：
10.1109/epec48502.2020.9320069
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发表时间：
2020-11
期刊：
影响因子：
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通讯作者：
Chiebuka Eyisi;Guanyu Tian;P. Vorobev;Qifeng Li
中科院分区：
文献类型：
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作者：
Chiebuka Eyisi;Guanyu Tian;P. Vorobev;Qifeng Li
微电网（MG）包括具有协调控制策略的多个互连分布式能源（DER），其可以在并网模式和孤岛模式下操作。在并网模式下，频率和母线电压由公用电网维持。在孤岛模式下，DER维持MG中的频率和总线电压。提出了一种基于电压源逆变器的孤岛型微电网负荷需求分担策略。研究了孤岛VSI-MG中存在单个满载VSI时互连MG的生存性问题。虚拟同步机（VSM）的概念，使建模的VSI模拟同步机的惯性效应的应用，然后制定一个基于雅可比的方法，考虑到，容量的VSI。仿真结果验证了该方法的有效性。
Microgrids (MGs) comprising multiple interconnected distributed energy resources (DERs) with coordinated control strategies can operate in both grid-connected and islanded modes. In the grid-connected mode, the frequency and bus voltages are maintained by the utility grid. In the islanded mode, the DERs maintain the frequency and bus voltages in the MG. This paper presents a load demand sharing strategy in an islanded voltage source inverter-based microgrid (VSI-MG). The survivability of the interconnected MG in the presence of a single fully loaded VSI in an islanded VSI-MG is investigated. The concept of virtual synchronous machines (VSM) that enables the modeling of the VSI to emulate the inertia effect of synchronous machines is applied and then a Jacobian-based approach is formulated that takes into account, the capacity of the VSI. Simulation results are presented to verify the effectiveness of the approach.