English: With the accelerated construction of new power systems, traditional AC grids face shortfalls such as high conversion losses, complex control, insufficient capacity for local renewable energy consumption, and significant energy curtailment. DC microgrids have become an essential vehicle for upgrading urban energy structures and efficiently consuming distributed energy. Their core objectives include improving energy utilization efficiency, enhancing local integration of renewable energy, ensuring power supply reliability, and achieving coordinated scheduling among sources, loads, and storage. The operating system relies on core power conversion equipment—such as bidirectional DC/DC converters, grid-connected inverters, and multi-port power electronic routers—combined with droop control, hierarchical coordinated control, and DC fault protection technologies. Current research focuses on high-voltage DC architectures, wide-bandgap device applications, system stability control, seamless grid-connected/islanded switching, and intelligent energy management. At the same time, it is deeply integrated into municipal power supplies, urban LED smart lighting, roadway landscape lighting, and integrated solar-storage systems for municipal parks, boosting renewable energy utilization through source-network-load-storage coordinated control to facilitate the energy-saving and intelligent upgrade of urban public infrastructure.

中文: 随着新型电力系统建设提速，传统交流电网存在变流损耗高、调控复杂、新能源就地消纳能力不足、弃能现象突出等短板，直流微电网已成为城市能源结构升级与高效消纳分布式能源的重要载体。其以提升能源利用效率、增强新能源就地吸纳能力、保障供电可靠性、实现源荷储协同调度为核心目标。系统依托双向 DC/DC 变换器、并网变流器、多端口电能路由器等电能转换核心装备，结合下垂控制、分层协调控制与直流故障保护技术构建运行体系。当前研究聚焦高压直流架构、宽禁带器件应用、系统稳定控制、并离网无缝切换与智能能量管理，同时深度融入市政供电、城市 LED 智慧照明、道路景观亮化、市政园区光储一体化场景，依托源网荷储协同调控提升新能源利用率，助力城市公共基础设施节能化、智能化升级。