基于混合储能系统在稳定直流母线电压上的应用

Based on the hybrid energy storage system in the application of stable DC bus voltage

由于大量的分布式电源随机接入大电网,对大电网的电能质量产生剧烈的影响。本文在蓄电池直接接在直流母线的基础之上,采用混合储能系统的方法,对光伏阵列的输出特性以及蓄电池组和超级电容器组的充放电作了研究。研究结果表明,混合储能系统能够通过DC/DC变换器,协调控制光伏阵列,储能单元以及负载之间的能量流动,并通过系统工作模式之间的不同切换,以保证直流母线电压的稳定。

Due to the large number of distributed power supply random access grid,it has severely influenced on power quality of power grid.In the storage battery directly on the basis of the DC bus,adopting the method of hybrid energy storage system makes a research on the output characteristics of photovoltaic array and the charging and discharging of battery and super capacitor.Research results show that the hybrid energy storage system can take advantage of the DC/DC converter to be coordinated control of photovoltaic array,energy storage unit and the energy flows between load,and the stability of DC bus voltage can be ensured by the system switch between the different work mode.