The existing approaches to control electrical grids combine frequency and voltage controls at different time-scales. When applied in microgrids with stochastic distributed generation, grid quality of service problems may occur, such as under- or overvoltages as well as congestion of lines and transformers. The COMMELEC framework proposes to solve this compelling issue by performing explicit control of power flows with two novel strategies: 1) a common abstract model is used by resources to advertise their state in real time to a grid agent; and 2) subsystems can be aggregated into virtual devices that hide their internal complexity in order to ensure scalability. While the framework has already been published in the literature, in this paper, we present the first experimental validation of a practicable explicit power-flow primary control applied in a real-scale test-bed microgrid. We demonstrate how an explicit power-flow control solves the active and reactive power sharing problem in real time, easily allowing the microgrid to be dispatchable in real time (i.e., it is able to participate in energy markets) and capable of providing frequency support, while always maintaining quality of service.

中文翻译：

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微电网中显式潮流主控制的实验验证

现有的控制电网的方法在不同的时标上结合了频率和电压控制。当在具有随机分布式发电的微电网中使用时，可能会出现电网服务质量问题，例如电压过低或过高以及线路和变压器拥塞。COMMELEC框架提出了通过以下两种新颖的策略来执行对潮流的显式控制来解决这一引人注目的问题：1）资源使用通用的抽象模型将其状态实时发布给网格代理。2）子系统可以聚合到虚拟设备中，以隐藏其内部复杂性，以确保可扩展性。尽管该框架已在文献中发表，但在本文中，我们提出了在实际规模的试验台微电网中应用的可行的显式潮流主控制的首次实验验证。我们演示了明确的潮流控制如何实时解决有功和无功功率共享问题，轻松地使微电网实时可调度（即，它能够参与能源市场）并能够提供频率支持，同时始终保持服务质量。