Distributed autonomous coordinated control strategy for AC-DC hybrid multi-microgrid system

Yingpei Liu; Zhenhua Gong

doi:10.1117/12.2686364

10 August 2023 Distributed autonomous coordinated control strategy for AC-DC hybrid multi-microgrid system

Yingpei Liu, Zhenhua Gong

Proceedings Volume 12759, International Conference on Automation Control, Algorithm, and Intelligent Bionics (ACAIB 2023); 127590N (2023) https://doi.org/10.1117/12.2686364
Event: 2023 3rd International Conference on Automation Control, Algorithm and Intelligent Bionics (ACAIB 2023), 2023, Xiamen, China

Abstract

The interconnected operation of multiple microgrids can effectively deal with the power fluctuation caused by largescale distributed power supply access, and enhance the anti-interference ability of the system. A distributed autonomous coordinated control strategy is proposed for AC-DC hybrid multi-microgrid system. This strategy can reduce the dependence on communication system, realize power exchange among subgrids, and reduce the voltage or frequency offset of each subgrid effectively. Firstly, the reference voltage or frequency of each subgrid is established by the energy storage unit. Then, the bidirectional DC-DC converter (BDDC) or bidirectional AC-DC converter (BADC) of each subgrid adjusts the power output to ensure the reasonable power distribution of the system. Finally, the AC-DC hybrid multi-microgrid system simulation model was established in PSCAD/EMTDC, and different working conditions were simulated and verified. The simulation results show that the control strategy can realize the coordinated operation of multiple microgrids.

Citation Download Citation

Yingpei Liu and Zhenhua Gong "Distributed autonomous coordinated control strategy for AC-DC hybrid multi-microgrid system", Proc. SPIE 12759, International Conference on Automation Control, Algorithm, and Intelligent Bionics (ACAIB 2023), 127590N (10 August 2023); https://doi.org/10.1117/12.2686364

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