基于超级电容器的混合储能在直流微电网中的应用

The application of hybrid energy storage based on super capacitor in DC micro-grid

针对直流微电网中对母线电压稳定性的要求及蓄电池的性能缺陷,采用超级电容器与蓄电池有机结合的混合储能系统;分析了混合储能系统的结构,改善储能系统的性能,提高其响应速度及抗冲击能力;设计了混合储能系统的输出特性,使其在孤岛状态能有效的控制母线电压,最后在MATLAB/Simulink中搭建了系统的仿真模型,对微电网并网转孤岛运行进行分析,仿真结果表明了混合储能系统的有效性。

Aiming at the stability requirement of bus voltage in DC micro-grid and the performance defect of the battery, the hybrid energy storage system combined super capacitor with battery organically is adopted. The structure of the hybrid energy Storage system is analyzed to improve the performance of energy storage system, the response speed and the impact resistance. The output characteristic of the hybrid energy storage system is designed to control bus volt-age effectively in the state of island mode. Finally, the system simulation model is built in the MATLAB / Simulink, which analyzes the micro-grid interconnection turning island operation, the simulation results show the effectiveness of the hybrid energy storage system.