基于动态事件触发复合输出一致性的直流微网电池储能系统分布式控制策略  

Distributed Control Strategy for Battery Energy Storage System in DC Microgrid Based on Dynamic Event-triggered Composite Output Consistency

作　　者：夏天 杨超 宋进良 黄博南[1] XIA Tian;YANG Chao;SONG Jinliang;HUANG Bonan(College of Information Science and Engineering in Northeastern University,Shenyang 110819,China;State Grid Liaoning Electric Power Company Information and Communication Branch,Shenyang 110000,China;State Grid Liaoning Electric Power Company Electric Power Research Institute,Shenyang 110006,China)

机构地区：[1]东北大学信息科学与工程学院,沈阳110819 [2]国网辽宁省电力有限公司信息通信分公司,沈阳110000 [3]国网辽宁省电力有限公司电力科学研究院,沈阳110006

出　　处：《电力电容器与无功补偿》2025年第2期44-52,共9页Power Capacitor & Reactive Power Compensation

基　　金：国家自然科学基金(52377079);国家重点研发计划(2018YFA0702200);中央高校基本科研业务费(N2204010)。

摘　　要：分布式电源、恒功率负载和负载切换在储能系统中普遍存在,他们往往会降低直流微电网储能系统的阻尼进而破坏系统稳定性。针对这一问题,本文提出一种基于动态事件触发复合输出一致性的完全分布式控制策略,以实现多母线直流微电网储能系统在DG、CPL及负载切换下的精确均流。首先,本文构建了由DG、电池、电阻负载和CPL组成的直流微电网状态空间函数模型,并将其转化为标准的线性异构多智能体系统,旨在明确系统的动态特性。而后,设计了一种基于动态事件触发和复合输出一致性的协同控制策略,以实现系统的精确均流,并解决了实际运行场景中系统通信拓扑全局信息难以获取和通信带宽受限的问题;最后,通过控制器硬件在环实验验证了所提策略的有效性,实验结果表明本文提出的策略能显著优化系统控制效果并具有较强的鲁棒性。Distributed generations(DGs),constant power loads(CPLs)and load switching are common in energy storage systems and can reduce the damping of energy storage system of the DC microgrid and thus affect system stability.In view of this issue,in this paper a kind of fully distributed control strategy based on dynamic event-triggered composite output consistency is proposed to achieve accurate current sharing in the multi-bus DC microgrid system at DGs,CPLs,and load switching.Firstly,a state-space function mod-el of the DC microgrid consisting of DGs,battery,resistive loads,and CPLs is constructed and is trans-formed into a standard linear heterogeneous multi-agent system to define dynamic characteristics of the sys-tem.Then,a cooperative control strategy based on dynamic event-triggered and composite output consisten-cy is designed to achieve accurate current sharing of the system and such issues as difficult capture of glob-al information of system communication topology and the limitation of communication band width in the ac-tual operation scenario has been solved.Finally,the effectiveness of the proposed strategy is verified in the environmental experiment through the controller hard wire.The experiment result shows the strategy pro-posed in this paper can not only optimize the control effect of the system,but also have strong robustness.

关 键 词：电池储能 输出一致性控制 动态事件触发通信方法 能量管理 直流微电网 

分 类 号：TM91[电气工程—电力电子与电力传动]