A communication-free economical-sharing scheme for cascaded-type microgrids
A communication-free economical-sharing scheme for cascaded-type microgrids
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DOI：
10.1016/j.ijepes.2018.06.006
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发表时间：
2019-01
影响因子：
5.2
通讯作者：
Lang Li;Huawen Ye;Yao Sun;Hua Han;Xing Li;M. Su;J. Guerrero
中科院分区：
文献类型：
--
作者：
Lang Li;Huawen Ye;Yao Sun;Hua Han;Xing Li;M. Su;J. Guerrero
针对级联逆变器供电的孤岛交流微网，提出了一种不需要任何通信的经济共享方案。每个分布式电源(DG)的输出电压相角由其相应的增量成本来调节。然后利用同步条件实现了保证经济最优性的等增量原理。此外，还提出了一种考虑能力约束的修正方法。对该方法进行了稳定性分析，得到了经济最优性和稳定性的条件。由于不需要通信，在成本和可靠性方面的优势是显而易见的。通过仿真和实验验证了该方案的有效性。
This paper proposes an economical-sharing scheme without the needs of any communications for islanded AC microgrids (MGs) fed by cascaded inverters. The output voltage phase angle of each distributed generator (DG) is regulated by its corresponding incremental cost. Then the equal incremental principle used to guarantee the economic optimality is realized by synchronization conditions. In addition, a modification method is introduced with considering the capacity constraints. Stability analysis of the proposed method is carried out, and the conditions for economic optimality and stability are obtained. Because the communications are not needed, the advantages in cost and reliability are obvious. Simulations and experiments are implemented to verify the effectiveness of the proposed scheme.