微电网分布式协同控制策略研究  

Research on Distributed Cooperative Control Strategy for Microgrid

作　　者：王新生 张华强 

机构地区：[1]哈尔滨工业大学(威海)信息与电气工程学院,山东威海264209

出　　处：《电气传动》2016年第5期66-69,共4页Electric Drive

基　　金：国家自然科学基金(51377168);科技部创新基金(11C26223702363)

摘　　要：当微电网切换到孤岛运行状态时,一般通过一次的下垂控制调整其电压和频率的稳定,但这时微电网中的各个分布式电源还会存在电压和频率的偏差。提出一种分布式二次控制策略,能够恢复电压和频率值到给定参考值并实现有功功率均分。将微电网看成多智能体系统,其中分布式电源间的通信网络用有向图来描述。考虑到实际应用中对控制变量的限制,给出了一种输入有界情况下的同步跟踪算法,在理论上证明了系统的稳定性,并由仿真实例验证了算法的有效性。Although the primary droop control can maintain the voltage and frequency stable when the microgridswitches to islanded mode,it leads to the voltage and frequency deviations of each DG. A distributed cooperativesecondary control of microgrids was applied to restore the voltage and frequency to their references and achieve powersharing. The microgrids could be considered as multi ？ agent systems since each DG was an agent and thecommunication network was modelled by a digraph. Considering the limitation of control input,a tracking strategywith bounded control input was adopted. The stability of the closed ？ loop system is proved in theory,and thesimulation on an islanded microgrid verifies the effectiveness of the proposed control strategy.

关 键 词：微电网 二次控制 有界输入 多智能体系统 

分 类 号：TM727[电气工程—电力系统及自动化]