摘要
超级电容-蓄电池混合储能系统同时具有能量密度高和功率密度高的特点,适用于平抑含有大量分布式能源接入的低压直流配电网的电压波动。提出了一种基于混合储能的母线电压分区控制策略,对母线电压实施5层电压控制,蓄电池用于稳定波动较小时的母线电压,超级电容平抑母线电压波动较大时的功率差额,给出了一种根据母线电压波动的极端情况配置超级电容容量的方案。经Matlab/Simulink仿真,验证了该控制策略的可行性。
The super capacitor and battery hybrid energy storage system has the characteristics of high energy density and high power density, which is suitable to stabilize the voltage fluctuation of low-voltage direct current （LVDC） distribution network containing a large number of distributed energy. This paper presented a new bus voltage division control strategy based on hybrid energy storage to implement 5-level voltage control for bus voltage, using the battery to stabilize the smaller bus voltage and using super capacitor to stabilize power balance of the bigger voltage fluctuation, and presenting a scheme to configure the super capacitor capacity based on the extreme conditions of the bus voltage fluctua- tion. Finally, feasibility of the strategy is verified through the simulation based on Simulink in Matlab.
作者
杨李星
严晓杰
周宇
YANG Li-xing YAN Xiao-jie ZHOU Yu(School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China)
出处
《电工电气》
2017年第1期30-34,42,共6页
Electrotechnics Electric
关键词
低压直流配电网
混合储能
母线电压
超级电容
low voltage direct current distribution network
hybrid energy storage
bus voltage
super capacitor
