A Discrete-Time Algorithm for Real Time Energy Management in DC Microgrids
A Discrete-Time Algorithm for Real Time Energy Management in DC Microgrids
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DOI：
10.1109/tpel.2022.3220783
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发表时间：
2023-03
影响因子：
6.7
通讯作者：
Fei Gao;Jiahao Yu;Daniel J. Rogers
中科院分区：
文献类型：
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作者：
Fei Gao;Jiahao Yu;Daniel J. Rogers
微电网在完全孤岛运行时，通常具有非常低的嵌入式系统惯性。在这种情况下，微电网中嵌入的存储能量在毫秒级的时间尺度上的管理至关重要，因为即使发电和消耗之间的短时间不匹配也会导致网络上的电压崩溃。本文提出了一种离散时间(基于采样)的能量管理算法，该算法利用电力电子接口负载的快速可控性来管理负载的内部存储能量，以最大限度地减少大容量存储和可调度发电的使用。快速转换器间通信用于平衡整个网络的存储需求和调度发电。以10个节点、采样时间为10ms的实验室规模微电网为例，研究了该能量管理算法的有效性。
A microgrid will often be characterized by very low embedded system inertia when operating fully islanded. In this state, management of the embedded stored energy in the microgrid over timescales of milliseconds is of critical importance as even short periods of mismatch between generation and consumption will cause voltage collapse on the network. This article proposes a discrete-time (sampling-based) energy management algorithm that uses the rapid controllability of power-electronics interfaced loads to manage the internal stored energy of loads with the aim of minimizing the use of bulk storage and dispatchable generation. Fast interconverter communication is used to balance storage demand across the network and to dispatch generation. A lab-scale microgrid with 10 nodes and a sampling time of 10 ms is used to investigate the effectiveness of the proposed energy management algorithm.