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Multi-port Interconnected Current-source Converter Control Technology Supporting Flexible Power Flow Regulation in Microgrids and Distribution Networks
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Shupeng LI1, Zhenbin LI1, Yali LIU1, Haishen LIANG2, Kunfang WANG3, Jinwei HE3
Journal of Power Supply | 2025, 23(4) : 233 - 241
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Journal of Power Supply | 2025, 23(4): 233-241
• Renewable Energy System •
Multi-port Interconnected Current-source Converter Control Technology Supporting Flexible Power Flow Regulation in Microgrids and Distribution Networks
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Shupeng LI1, Zhenbin LI1, Yali LIU1, Haishen LIANG2, Kunfang WANG3, Jinwei HE3
Affiliations
  • 1.Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300000, China
  • 2.Baodi Power Supply Company, State Grid Tianjin Electric Power Company, Tianjin 300000, China
  • 3.School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Published: 2025-07-30 doi: 10.13234/j.issn.2095-2805.2025.4.233
Outline
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To realize the collaborative control of power mutual assistance, voltage frequency support and state-of-charge (SOC) of energy storage batteries between multiple microgrids, a multi-port interconnected current source converter suitable for the interconnection of microgrids is proposed. Through the introduction of the average SOC of the microgrid group into the active command control loop of a central controller and the addition of a capacity weight factor to the loop, the dynamic equilibrium of energy storage SOCs of three microgrids under various working conditions is realized. In addition, with the consideration of frequency exceeding of the microgrid that may occur during the SOC adjustment process, an SOC-frequency collaborative control strategy that takes into account the frequency performance of the microgrid is put forward, and the frequency operation is guaranteed to be within a specified range on the basis of realizing the SOC equilibrium of the microgrid group. Simulation results verify the correctness and effectiveness of the proposed control strategy.

Current-source converter  /  multi-port interconnected converter  /  state-of-charge (SOC) equilibrium control  /  microgrid
李树鹏, 李振斌, 刘亚丽, 梁海深, 王坤放, 何晋伟. 支撑微电网和配电网灵活潮流调节的电流源型多端口互联变流器控制技术. 电源学报, 2025 , 23 (4) : 233 -241 . DOI: 10.13234/j.issn.2095-2805.2025.4.233
Shupeng LI, Zhenbin LI, Yali LIU, Haishen LIANG, Kunfang WANG, Jinwei HE. Multi-port Interconnected Current-source Converter Control Technology Supporting Flexible Power Flow Regulation in Microgrids and Distribution Networks[J]. Journal of Power Supply, 2025 , 23 (4) : 233 -241 . DOI: 10.13234/j.issn.2095-2805.2025.4.233
Funding
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  • Tianjin Electric Power Company Science and Technology Project(电科-研发2023-42)
Appendix
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Year 2025 volume 23 Issue 4
54
16
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Article Info
doi: 10.13234/j.issn.2095-2805.2025.4.233
  • Receive Date：2023-09-11
  • Online Date：2026-10-26
  • Published：2025-07-30
Article Data
Affiliations
History
  • Received：2023-09-11
  • Revised：2023-11-22
  • Accepted：2023-12-04
Funding
Tianjin Electric Power Company Science and Technology Project(电科-研发2023-42)
Affiliations
    1.Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300000, China
    2.Baodi Power Supply Company, State Grid Tianjin Electric Power Company, Tianjin 300000, China
    3.School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
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