基于多端口能量路由器的微网系统及其调试

为加速推动能源互联网建设,对于其核心设备——能量路由器的研究具有重要意义。依托浙江某分布式能源示范工程,开展基于多端口能量路由器的小型微网系统研究与调试。阐述了工程用五端口双向能量路由器拓扑结构,并以此为基础构建微网系统,其包含分布式光伏、储能装置与具有电能自发自用功能的智慧小屋系统。在调试过程中,通过协调配合DC/DC变换器之间的技术参数与控制策略,平抑能量路由器输出侧直流母线电压波动,消除光伏出力无法下送至能量路由器的缺陷。能量路由器控制内部直流母排电压稳定与各端口功率平衡,保证微网安全可靠地并、离网运行。结果验证了以多端口能量路由器为核心设备组建微网系统的合理性与有效性,且调试优化过程对日后多端口能量路由器的实际工程应用具有指导价值。

Research and Commissioning of Microgrid System Based on Multi-port Energy Router

In order to accelerate the construction of energy internet, the research on its core device, energy router, is of great significance. According to a demonstration project of distributed energy in Zhejiang, the research and commissioning of microgrid system based on multi-port energy router is developed. This paper expounds the topological structure of five-port bi-directional energy router in this project, and builds microgrid system including distributed photovoltaic power, energy storage device and smart house which is self-sufficiency. During the debugging process, the output side DC bus voltage fluctuations of energy router was suppressed as well as the issue that output of photovoltaic power could not be sent to energy router was fixed by coordinating the technical parameters and control strategy of DC/DCs. Energy router keeps power balance of each port and voltage stabilization of DC bus, which ensure the microgrid runs safely and reliably. The debugging result validate the validity and rationality of microgrid system based on multi-port energy router, and its debugging optimization process has guiding significance for practical engineering application of multi-port energy router in the future.