基于能量管理的直流微电网集群协同控制策略  

Coordinated control strategy of DC microgrid cluster based on energy management

作　　者：朱晓荣[1] 杜雯菲 ZHU Xiaorong;DU Wenfei(Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学新能源电力系统国家重点实验室,河北保定071003

出　　处：《电力自动化设备》2025年第1期123-130,共8页Electric Power Automation Equipment

摘　　要：为实现微电网间的协调控制及功率互济,提高能量使用效率,提出了基于能量管理的直流微电网集群协同控制策略。其采用分层式控制结构,下层为功率-电压下垂控制,中层为分布式一致性电压控制,上层为集中式控制协调各个微电网的控制策略。多层协同的控制策略使得集群中各微电网既可以独立运行又可以相互间提供功率支撑,还可以与主电网进行互联,参与电力市场,利用不同地点的资源,最大化能量利用效率,保证整个集群电压质量。在微电网间通信故障或线路断开情况下所提控制策略基本不受影响,具有一定的鲁棒性。在MATLAB/Simulink中模拟多种工况对所提控制策略进行仿真,结果表明所提控制在保证集群电压水平的同时,可以实现整个微电网集群的能量管理。To achieve coordinated control and power mutual aid among microgrids,as well as improve energy utilization efficiency,a cluster coordinated control strategy for DC microgrid is proposed based on energy management.This strategy adopts a hierarchical control structure,the lower-layer control uses power-voltage droop control,the middle-layer control adopts distributed consensus voltage control,and the upper-layer control uses centralized control to coordinate individual microgrids.The multi-layer coordinated control strategy allows the microgrids in the cluster to operate independently while providing power support to each other.They can also be interconnected with the main grid,participate in the electricity market,utilize resources from different locations,maximize energy utilization efficiency,and ensure the voltage quality of the entire cluster.The proposed control strategy is basically unaffected and has certain robustness in the case of communication failure or line disconnection between microgrids.The proposed control strategy is simulated in MATLAB/Simulink by simulating various working conditions.The results show that the proposed control can realize the energy management of the whole microgrid cluster while ensuring the voltage level of the cluster.

关 键 词：直流微电网集群 独立性 功率互济 协同控制 能量管理 

分 类 号：TM721.1[电气工程—电力系统及自动化]