【摘要】 为提供连续稳定的光伏电能,提出了将能源转换效率高的蓄电池和存储成本低廉的氢能组合,构成混合储能系统应用于光伏微网,其主要元件包括光伏组件、燃料电池、电解池、氢气罐和蓄电池等,各元件通过使用功率变换器与直流总线相连,实现各元件输出特性的相互匹配。建立了各元件数学模型,设计了各元件控制策略和微网协调控制策略,使用Matlab搭建了基于混合储能的光伏微网的动态仿真平台,并对该微网的动态运行性能进行了分析。仿真结果表明:混合储能系统可及时响应负载需求,实现功率平衡。更多还原

【Abstract】 To supply continuous and stable electricity generated by photovoltaic generation,it is proposed to combine battery with high efficiency of energy conversion to hydrogen energy device with low storage cost to form hybrid energy storage system applied to photovoltaic(PV) microgrid.The PV microgrid is composed of PV modules,fuel cells,electrolyzers,hydrogen tanks,batteries and so on,and the matching among output characteristics of these components is implemented by connecting these components to the DC bus via power converters.Mathematical model of these components are built,and control strategies of these components as well as the coordinative control strategy for PV microgrid are designed.Using Matlab software,a dynamic simulation platform for PV microgrid based on hybrid energy storage is constructed,and the dynamic operational performance of PV microgrid is analyzed.Simulation results show that the proposed hybrid energy storage system can respond load demand in time and implement power balance of PV microgrid.更多还原