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直流配电网多储能协调控制策略研究
资料介绍
提出了由多种蓄电池储能单元及超级电容构成的低压直流配电网储能系统,其中多种蓄电池储能单元可增大储能系统容量,提高供电可靠性。针对储能系统中各蓄电池出力不均及各蓄电池之间荷电状态的差异,提出了一种变参数下垂控制法实现不同蓄电池单元传输功率优化分配和SOC动态均衡。文章对变流器控制系统进行Matlab/Simulink仿真,仿真结果表明,该方法将各蓄电池荷电状态信息加入变下垂系数的参数调节过程,SOC较高的蓄电池输出较高的功率,最终实现两种蓄电池单元SOC一致,动态调节母线参考电压,延长储能系统使用寿命。
In the paper,a low-voltage DC distribution network energy storage system is proposed,which is consisteds a variety of battery energy storage units and supercapacitors.Among them,a variety of battery energy storage units can increase the capacity of the energy storage system and improve the reliability of power supply.Aiming at the uneven output of batteries and the difference of charging state between batteries in energy storage system,a variable parameter droop control method is proposed to realize the optimal distribution of transmission power and the dynamic balance of SOC in different batteries.The control system of converter is simulated by MATLAB.The simulation results show that the control method adds the information of the charging state of each battery into the parameter adjustment process of the variable sag coefficient.The battery with higher SOC output has higher power.Finally,the two battery units can achieve the same SOC,dynamically adjust the bus reference voltage,and prolong the service life of the energy storage system.
部分文件列表
| 文件名 | 大小 |
| 直流配电网多储能协调控制策略研究.pdf | 1M |
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