Distributed Operation of Interlinked AC Microgrids with Dynamic Active and Reactive Power Tuning
Distributed Operation of Interlinked AC Microgrids with Dynamic Active and Reactive Power Tuning
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DOI：
10.1109/tia.2013.2262092
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发表时间：
2013-05
影响因子：
4.4
通讯作者：
I. Nutkani;P. Loh;F. Blaabjerg
中科院分区：
文献类型：
--
作者：
I. Nutkani;P. Loh;F. Blaabjerg
微电网是由现代发电源、存储系统和负载聚集在一起形成的小型电网。由于相互独立，形成的微电网原则上可以在自己喜欢的电压和频率下运行。因此，将它们连接到主电网或另一个微电网将需要一些相互连接的电源转换器，其控制最好是自主的，而不依赖于快速通信链路。为了促进这一研究主题，本文提出了一种分布式电源管理方案，用于在不同电压和频率下互连两个或多个独立的微电网。该方案允许微电网中的源更专注于有功功率的利用，而互连变流器更专注于满足负载无功需求。如有必要，从欠负荷微电网的备用有功功率也可以转移到过载微电网，使其能够提供超过其额定容量的负载。该方案的性能已在实验中得到验证。
Microgrids are small grids formed by clustering modern generating sources, storage systems, and loads together. Being independent, the formed microgrids can, in principle, operate at their own preferred voltages and frequencies. Tying them to the mains grid or another microgrid would therefore require some interlinking power converters, whose control should preferably be autonomous without depending on fast communication links. Contributing to this theme of research, a distributed power management scheme has been proposed in this paper for interlinking two or more independent microgrids operating at different voltages and frequencies. The proposed scheme allows sources in the microgrids to concentrate more on active power harnessing, while the interlinking converters focus more on meeting the load reactive demand. If necessary, backup active power from an underloaded microgrid can also be transferred to an overloaded microgrid, allowing it to supply loads in excess of its rated capacity. The performance of the proposed scheme has already been tested in experiment.