基于一致性算法的直流微电网分布式二次补偿控制  

Distributed Secondary Compensation Control of DC Microgrid Based on Consensus Algorithm

作　　者：向建新 何晋[1,2] 代广贵 XIANG Jian-xin;HE Jin;DAI Guang-gui(Electrical Information Engineering College,Yunnan Minzu University,Kunming 650000,China;Yunnan Key Laboratory of Unmanned Autonomous System,Yunnan Minzu University,Kunming 650000,China)

机构地区：[1]云南民族大学电气信息工程学院,昆明650000 [2]云南民族大学云南省无人自主系统重点实验室,昆明650000

出　　处：《科学技术与工程》2024年第24期10330-10336,共7页Science Technology and Engineering

基　　金：国家自然科学基金(52061042);云南民族大学研究生科研创新基金(2024SKY123)。

摘　　要：针对直流微电网中传统下垂控制不能兼顾电压质量和功率均分的问题,提出基于一致性算法的含母线电压补偿和负载电流均流精度补偿的分布式电压、电流协调控制策略。在主控制中利用下垂控制器来实现分布式电源之间的功率分配;二次控制以电压补偿的比例积分(proportion integral, PI)控制器保证电压质量,以电流补偿的PI控制确保负载均流精度。其次,为避免系统运行中一些分布式电源的变换器的输出功率超过额定容量从而导致控制故障,设计了适用于离散动态一致性算法的限流功能。最后,基于稳定性分析和MATLAB/Simulink平台验证了所提策略的有效性。A distributed voltage and current coordination control strategy based on consensus algorithm was proposed to address the issue of traditional droop control in DC microgrids,which failed to simultaneously ensure voltage quality and power sharing accuracy.In the primary control,droop controllers were utilized to distribute power among distributed energy resources(DERs).Secondary control employed proportion integral controllers for voltage compensation to ensure voltage quality and current compensation for load current sharing accuracy.Moreover,a current-limiting function suitable for discrete dynamic consensus algorithms was designed to prevent control failures caused by converter of distributed energy resources exceeding their rated capacity during system operation.Finally,the effectiveness of the proposed strategy was verified through stability analysis and simulation using the MATLAB/Simulink platform.

关 键 词：直流(DC)微电网 下垂控制 分布式控制 动态一致性算法 电流限幅 

分 类 号：TM727[电气工程—电力系统及自动化]