LIU Haitao,DONG Xinzhou,XIONG Xiong,et al.Energy Interconnection and Energy Microcirculation System of Terminal Power Grid Based on Low-voltage Flexible DC[J].Automation of Electric Power Systems,2023,47(6):40-47.
LIU Haitao,DONG Xinzhou,XIONG Xiong,et al.Energy Interconnection and Energy Microcirculation System of Terminal Power Grid Based on Low-voltage Flexible DC[J].Automation of Electric Power Systems,2023,47(6):40-47. DOI: 10.7500/AEPS20220909002.
Energy Interconnection and Energy Microcirculation System of Terminal Power Grid Based on Low-voltage Flexible DC
Under the goal of "carbon emission peak and carbon neutrality"
large-scale distributed photovoltaic
electric vehicle charging piles and other zero-carbon and low-carbon elements are connected to the low-voltage distribution network
which brings challenges to the reliable
stable
and economic operation of the terminal power grid. Based on the low-voltage DC technology
the flexible interconnection and energy reciprocity between distribution substation areas are realized
the new topology of terminal power grid under the new power system is constructed
and the energy microcirculation is used to solve a series of prolems in the current terminal power grid. First
the primary topology and secondary networking mode of low-voltage flexible DC interconnection are introduced to meet the resource endowment and differentiated needs of different low-voltage distribution networks. Secondly
several functional morphologies of the terminal energy microcirculation are described to achieve the operation goals of load balancing and fast fault transfer in different distribution substation areas. Finally
the current project situation in China is summarized
and the first low-voltage flexible interconnection and energy microcirculation project in China is introduced in detail. The project operation situation verifies that the system can effectively improve the reliability and economy of the terminal power grid operation.
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Application Status and Prospects of Flexible Interconnection Technology for Multi-station areas in Medium-voltage Distribution Network
Joint Planning of Soft Open Point and Energy Storage in Distribution Networks with Source-Load Imbalance Characteristics
Optimal Regulation and Control Strategy for Flexible Interconnected Distribution Network Considering Loss Characteristics of Transformers and Soft Open Points
Related Author
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GUO Peiqian
Related Institution
Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education (Shanghai Jiao Tong University)
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Xiamen Power Supply Company of State Grid Fujian Electric Power Co., Ltd.
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