【摘要】 “光储直柔”是推动城乡建设低碳化的重要路径之一。本文开展了光储直柔系统的工程实践，测试并分析了不同天气条件及运行模式下的电能质量与能量传输特性，以支撑系统配置及管理优化。研究结果表明，建成的光储直柔系统可在孤网、市电补偿、市电交互等模式下稳定运行，能源中枢设备可有效调控电能质量并调节光伏发电调度。在光伏直驱空调子系统中，交流母线电压波动94.0%～96.3%,暂态电压波动≤5%;夏季光伏发电与空调用电趋势同步，光伏贡献率达57.6%;冬季市电则制热启动时刻功率达峰，光伏贡献率为43.5%;过渡季光伏并网比例达77.8%,建筑整体作为储能池应参与深层次光伏消纳。光储交直流微网子系统中，直流母线电压波动94.9%～101.9%,暂态电压波动≤5%。晴天光伏贡献率达83.2%,负载消纳比例为86.5%,系统损耗率11.1%,阴天光伏贡献率下降，负载消纳率提升，系统损耗率则可降低。通过优化储能管理策略及功率变换效率，可进一步增强光储协同供能能力，提高系统整体能效。更多还原

【Abstract】 Photovoltaic-Energy Storage-Direct Current-Flexibility(PEDF) represents an important pathway for promoting low-carbon development in urban and rural construction. This study conducts engineering practice on a PEDF system and analyzes its power quality and energy transfer characteristics under different weather conditions and operating modes, providing support for system configuration and operation optimization. Results showed that the system can operate stably in islanded mode, grid-assisted compensation mode, and grid-interactive mode, with the energy hub effectively regulating power quality and PV energy dispatch. In the PV-driven air-conditioning subsystem, the AC bus voltage fluctuated between 94.0% and 96.3%, with transient variations ≤5%. During summer, PV generation aligned with air-conditioning demand, contributing 57.6% of cooling energy; in winter, peak grid power occurred during heating startup, with PV contributing 43.5%; in transitional seasons, 77.8% of PV generation was fed into the grid, highlighting the potential for buildings to function as energy storage units for enhanced PV utilization. In the PV-storage AC/DC microgrid subsystem, the DC bus voltage fluctuated within the range of 94.9% to 101.9%, with transient variations ≤5%. On sunny days, PV contributed 83.2%, with a load consumption ratio of 86.5% and a system loss rate of 11.1%. On cloudy days, PV contribution decreased, but load self-consumption increased, reducing system losses. Optimizing energy storage management and power conversion efficiency can further enhance PV-storage synergy and improve overall system performance.更多还原