Abstract
To reduce the computation complexity of the optimization algorithm used in energy management of a multi-microgrid system, an energy optimization management method based on model predictive control is presented. The idea of decomposition and coordination is adopted to achieve the balance between power supply and user demand, and the power supply cost is minimized by coordinating surplus energy in the multi-microgrid system. The energy management model and energy optimization problem are established according to the power flow characteristics of microgrids. A dual decomposition approach is imposed to decompose the optimization problem into two parts, and a distributed predictive control algorithm based on global optimization is introduced to achieve the optimal solution by iteration and coordination. The proposed method has been verified by simulation, and simulation results show that the proposed method provides the demanded energy to consumers in real time, and improves renewable energy efficiency. In addition, the proposed algorithm has been compared with the particle swarm optimization (PSO) algorithm. The results show that compared with PSO, the proposed method has better performance, faster convergence, and significantly higher efficiency.
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Project supported by the National Natural Science Foundation of China (No. 61702151), the First Group of Teaching Reform Research Project in the 13th Five-Year Plan of Higher Education of Zhejiang Province, China (No. jg20180509), the Natural Science Foundation of Zhejiang Province, China (Nos. LY17E070004, LY17F010010, LY19F020022 and LQ14F020008), and the Public Welfare Technology Application Research Project of Zhejiang Province, China (No. 2017C33219)
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Hu, Ky., Li, Wj., Wang, Ld. et al. Energy management for multi-microgrid system based on model predictive control. Frontiers Inf Technol Electronic Eng 19, 1340–1351 (2018). https://doi.org/10.1631/FITEE.1601826
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DOI: https://doi.org/10.1631/FITEE.1601826