【目的】氢储能具有高能量密度和大功率的特点。一体化可再生燃料电池(URFC)是一种集成化程度较高的储氢系统，但在分布式直流微电网中的应用报道较少。URFC与电能存储相结合，在孤岛微电网应用中具有很大的潜力。经济调度是孤岛微电网中的一个关键问题，微电网由不同发电单元组成，而这些单元的发电成本和输出功率各不相同，如何协调各单元的出力以实现整体的最经济运行是一个复杂的优化问题。【方法】本文提出了一种改进的分布式经济控制策略，该策略基于增量成本(IC)共识分布式算法，即当所有发电单元的IC相等时，才能获得整个系统的最低成本。此外，本文还设计了一个节点用于实现高质量的电压恢复。考虑到各发电单元的功率限制，在算法中加入了相应的约束条件，确保调度结果的可行性。最后基于Matlab/Simulink进行仿真，对比分析了不同工况下系统的动态响应性能、经济性能和稳定性。【结果】仿真结果表明，所提控制策略能够有效实现电压恢复，显著提升光储氢孤岛直流微电网的可靠性和电能质量。在各种扰动和负荷变化情况下，系统均能快速恢复到稳定状态。与传统方法相比，该策略在经济性和动态性能方面都有明显优势。【结论】本文提出的分布式经济控制策略具有良好的灵活性和适应性。在实际应用中，负责电压恢复的节点可以根据功率约束情况动态切换到其他电源单元，保证系统的持续稳定运行；同时，不再参与调度的节点可以从通信网络中断开，减少通信负担。这种设计使得系统具有更强的容错能力和可扩展性。

[Objective] Hydrogen energy storage has the characteristics of high energy density and high power. Unitized regenerative fuel cell (URFC) is highly integrated hydrogen storage systems, but their application in distributed DC microgrids has been rarely reported. When combined with electrical energy storage, they hold significant potential in islanded microgrid applications. Economic dispatch is a critical issue in islanded microgrids, as they consist of various generation units with different generation costs and power outputs. Coordinating the output of these units to achieve optimal overall economic operation is a complex optimization problem. [Methods] This paper proposed an improved distributed economic control strategy based on the incremental cost (IC) consensus distributed algorithm, which ensured the lowest system cost when the IC of all generation units was equal. Additionally, a specific node was designed to achieve high-quality voltage restoration. Considering the power limitations of each generation unit, corresponding constraints were incorporated into the algorithm to ensure the feasibility of the dispatch results. Finally, simulations were performed using Matlab/Simulink, and a comparative analysis was conducted on the system’s dynamic response performance, economic performance, and stability under different operating conditions. [Results] Simulation results showed that the proposed control strategy could effectively achieve voltage restoration and significantly enhance the reliability and power quality of the photovoltaic-hydrogen storage islanded DC microgrid. Under various disturbances and load changes, the system could quickly recover to a stable state. Compared with traditional methods, the proposed strategy exhibited notable advantages in both economic efficiency and dynamic performance. [Conclusion] The distributed economic control strategy proposed in this paper exhibits good flexibility and adaptability. In practical applications, the node responsible for voltage restoration can dynamically switch to other power units based on power constraints, ensuring continuous and stable operation of the system. Meanwhile, nodes no longer participating in dispatch can be disconnected from the communication network, reducing the communication burdens. This design enhances the system’s fault tolerance and scalability.