考虑经济调度及电压恢复的直流微电网分布式二次控制

doi:10.19595/j.cnki.1000-6753.tces.201149

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Abstract The droop-based primary control of DC microgrid shows the drawbacks of steady-state bus voltage deviation and inaccurate current sharing. Although, the traditional centralized or distributed secondary control strategy can achieve bus voltage restoration and accurate current sharing. However, the generation cost of each DG unit is not considered in the traditional control strategy. In order to improve the stability and operation efficiency of DC microgrid, distributed average bus voltage recovery control algorithm and distributed optimal load distribution algorithm were designed based on distributed consensus theory. Based on the proposed distributed secondary control, bus voltage restoration and economic dispatch can be achieved simultaneously in the secondary control layer, thus the operational efficiency of microgrid can be improved. In addition, the proposed control strategy can be achieved in a fully distributed way, which shows the advantages of flexibility, robustness and scalability.

Key words： DC microgrid distributed consensus secondary control economic dispatch voltage restoration control multi-agent system

Received: 06 September 2020

PACS:

TM761

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	Articles by authors
	Li Zhongwen
	Cheng Zhiping
	Zhang Shuyuan
	Wang Yaoqiang
	Si Jikai

Cite this article:

Li Zhongwen,Cheng Zhiping,Zhang Shuyuan等. Distributed Secondary Control for Economic Dispatch and Voltage Restoration of DC Microgrid[J]. Transactions of China Electrotechnical Society, 2021, 36(21): 4482-4492.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201149 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I21/4482

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