Microgrid unbalanced voltage layered optimization control method

The present invention discloses a microgrid unbalanced voltage layered optimization control method. The microgrid unbalanced voltage layered optimization control method employs a layer control structure, the local negative sequence voltage droop control realizes once compensation of the unbalanced voltage, the secondary cooperation optimization control realizes secondary compensation of the unbalanced voltage and accurate distribution of negative sequence reactive power, and a multi-agent structure is introduced to ensure the system cooperation optimization control. The method can ensure the accurate distribution of the negative sequence reactive power bore by each inverter in proportion according to the capacity of each inverter while reducing degree of voltage asymmetry in a required range, improve the system stability and reduce the system unbalanced voltage compensation device investment. 本发明公开了种微电网不平衡电压分层优化控制方法，其特征是采用分层控制结构，本地负序电压下垂控制实现不对称电压的次补偿，二次协调优化控制实现不对称电压的二次补偿以及负序无功的精确分配，多代理结构的引入保证了系统协同优化控制。本发明方法实现