Communication-Based Control for DC Microgrids
Communication-Based Control for DC Microgrids
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DOI：
10.1109/tsg.2018.2791361
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发表时间：
2018-01
影响因子：
9.6
通讯作者：
Mahmoud Saleh;Yusef Esa;A. Mohamed
中科院分区：
文献类型：
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作者：
Mahmoud Saleh;Yusef Esa;A. Mohamed
基于通信的集中控制是实现直流微电网自主先进能量管理能力的主要手段之一。然而，在实际应用中，它的主要局限性是通信带宽和计算资源有限。这通常可以通过避免冗余的通信和复杂的计算来改进。提出了一种基于自主通信的状态/事件混合驱动控制方案。该控制方案具有层次化和启发式的特点，在主控制层采用状态驱动的局部控制器，在次控制层采用事件驱动的微电网集中控制器。这种启发式混合控制系统的目标是减少通信负荷和复杂性，减少处理器计算，从而降低系统成本，同时在所有可能的场景中保持可靠的自主操作。利用有限状态机建立了所提出的控制方案的数学模型，用于覆盖所有可能的工作模式/子模式，并确保在各种事件期间它们之间的无缝转换。文中还介绍并讨论了一些涉及严重业务场景的案例研究结果。结果验证了所提出的基于通信的控制方案的正确性和有效性。
Centralized communication-based control is one of the main methods that can be implemented to achieve autonomous advanced energy management capabilities in dc microgrids. However, its major limitation is the fact that communication bandwidth and computation resources are limited in practical applications. This can be often improved by avoiding redundant communications and complex computations. In this paper, an autonomous communication-based hybrid state/event driven control scheme is proposed. This control scheme is hierarchical and heuristic, such that on the primary control level, it encompasses state-driven local controllers, and on the secondary control level, an event-driven microgrid centralized controller is used. This heuristic hybrid control system aims at reducing the communication load and complexity, processor computations, and consequently system cost while maintaining reliable autonomous operation during all possible scenarios. A mathematical model for the proposed control scheme using finite state machines has been developed and used to cover all the possible modes/sub-modes of operation, and assure seamless transitions among them during various events. Results of some case studies involving severe operational scenarios were presented and discussed. Results verify the validity and effectiveness of the proposed communication-based control scheme.