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Research on AC/DC hybrid power supply system in industrial park

Generalized DC loads represented by inverter air conditioners, IT loads, and electric vehicle charging piles in southern China were growing rapidly. In order to meet the diversified energy demand of users, achieve multi-energy complementarity and improve power supply reliability. This article addressed the issues of typical energy demand and distributed renewable energy consumption in Southern Industrial Parks. An AC / DC hybrid power supply system in an industrial park scenario was proposed. The structure of dual power single bus and cluster concept were analyzed. The technical principles of key equipment such as power electronic transformers(PET) and fault current controllers in the system were described. Key technologies such as system operation control objectives, system operation control modes, and system operation control schemes were proposed. The system utilized multi-port power electronic transformers to achieve source, load, and storage access and complementary coordination, to achieve reliable access to high-penetration photovoltaics and economic energy supply for industrial loads and electric vehicle charging stations.