基于分布式内模设计的微电网协调二次控制策略

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Abstract This paper proposes a secondary voltage and frequency control strategy for the islanded microgrids based on the multi-agent system. Firstly, input-output linear mathematical model of voltage and frequency control is presented using state feedback. Then the preliminary knowledge of graph theory is briefly introduced, and distributed cooperative secondary controller is developed based on internal model design. The proposed control obviates the requirement for a central controller. In this scheme, each distributed generator controller requires only the local information and the information from its neighbors on a directed communication network. Finally an islanded microgrid test system is built in PSCAD/EMTDC to verify the effectiveness of the proposed control strategy. The results illustrate that the control strategy can restore both voltage and frequency to their reference values with accurate real power sharing.

Key words： Microgrids multi-agent system internal model design secondary control distributed cooperative control

Received: 14 November 2016 Published: 26 May 2017

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TM76

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	Chen Meng
	Xiao Xiangning

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Chen Meng,Xiao Xiangning. Cooperative Secondary Control Strategy of Microgrids Based on Distributed Internal Model Design[J]. Transactions of China Electrotechnical Society, 2017, 32(10): 145-153.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I10/145

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