含自适应虚拟阻抗的状态预测一致性微电网二次控制策略  

State prediction consistency secondary control strategy formicrogrids with adaptive virtual impedance

作　　者：施永[1] 翟菲 谢缔 姚继刚 汪亮亮 解宝 SHI Yong;ZHAI Fei;XIE Di;YAO Jigang;WANG Liangliang;XIE Bao(Research Center for Photovoltaic System Engineering,Ministry of Education,Hefei University of Technology,Hefei 230009,China;Guangdong HYNN Technologies Co.,Ltd.,Dongguan 523808,China)

机构地区：[1]合肥工业大学教育部光伏系统研究工程中心,安徽合肥230009 [2]广东恒翼能科技股份有限公司,广东东莞523808

出　　处：《电机与控制学报》2025年第2期24-34,共11页Electric Machines and Control

基　　金：中央高校基本科研业务费专项资金(PA2022GDGP0032);广东恒翼能科技股份有限公司合作项目(W2023JSFW0479)。

摘　　要：采用下垂控制作为组网方式的交流微电网系统,其电压和频率会随着负荷和分布式电源出力的变化而变化,并且系统内无功负荷的分配会受下垂系数、输出阻抗等多个因素的影响。为了同时解决上述两个问题,基于多智能体理论提出一种含自适应虚拟阻抗的状态预测一致性微电网二次控制策略。所提策略根据微电网系统稳态时频率和电压的一致性状态差异,在传统一致性控制的基础上分别设计了相应的状态预测器,提高了系统无静差二次调频调压的速度。同时,考虑到各台微源的下垂系数和输出阻抗不匹配的情况,设计了一种自适应虚拟阻抗,实现了无功负荷在各台微源之间的比例分配。最后,在MATLAB/Simulink仿真软件以及半实物平台上搭建孤岛微电网仿真模型,验证了所提控制策略的性能。The voltage and frequency of an AC microgrid system using droop control as the networking method will vary with changes in load and distributed generation output,and the sharing of reactive power loads within the system will be affected by multiple factors such as droop coefficient and output impedance.To solve the above two problems simultaneously,this study proposes a state prediction consistency secondary control strategy for microgrids with adaptive virtual impedance based on multi-agent theory.The proposed strategy designs corresponding state predictors based on the consistency state differences of frequency and voltage in the steady-state of the microgrid system,on the basis of traditional consistency control,to improve the speed of secondary frequency and voltage regulation without static error in the system.At the same time,considering the mismatch between the droop coefficient and output impedance of each microsource,an adaptive virtual impedance was designed to achieve proportional sharing of reactive power load between each microsource.Finally,an islanded microgrid simulation model was built on MATLAB/Simulink simulation software and a hardware-in-the-loop experimental platform to verify the performance of the proposed control strategy.

关 键 词：微电网系统 下垂控制 二次调频调压 无功负荷分配 一致性算法 自适应虚拟阻抗 

分 类 号：TM761[电气工程—电力系统及自动化]