基于源-荷-储的直流微电网系统协调控制

针对孤岛下独立运行的直流微电网，为了更好的维持系统功率的供需平衡，快速平抑母线电压的波动。利用超级电容和蓄电池的互补特性设计混合储能系统，在下垂控制的基础上，通过增加二次补偿装置抑制负荷功率波动，从而实现直流微电网的精准控制，将系统划分成多个模式运行，通过利用所提的控制策略对各个模块进行联动控制，实现系统平滑的在多个运行模式下切换。完成直流微电网的源-荷-储协调优化控制。最后对其在MATLAB/Simulink上进行仿真实验，验证控制策略的有效性和可行性。

Coordination control of DC microgrid system based on source-charge-storage

In order to better maintain the balance between supply and demand of system power, the fluctuation of bus volt-age can be quickly suppressed for the DC microgrid operating independently under isolated islands. Using com-plementary characteristics of super capacitor and battery hybrid energy storage system, on the basis of the droop control, by increasing the secondary compensation device inhibition of load power fluctuations, so as to realize the precise control of DC micro power grid, the system is divided into multiple model, by using the proposed control strategy to linkage control of various modules, to achieve smooth system switching in multiple operating modes. Complete the coordination and optimization control of source-charge-storage of DC microgrid. Finally, a simulation experiment is carried out on MATLAB/Simulink to verify the effectiveness and feasibility of the con-trol strategy.