中国电机工程学报2024，Vol.44Issue(22)：8771-8785,中插7,16.DOI:10.13334/j.0258-8013.pcsee.230830
基于观测器的有向通信下多母线直流微电网分布式自触发二次调节
Observer-based Distributed Self-triggered Secondary Control of Multi-bus DC Microgrid Over Directed Communication
摘要
Abstract
Dynamic consensus-based average state observation is a common method for distributed secondary control(SC)of multi-bus microgrids.However,this method requires high communication and computation frequency,and currently available methods for static average consensus are not applicable for dynamic consensus.Meanwhile,it is not considered that the unbalanceness of directed networks can result observation and SC errors.Therefore,an observation-based distributed self-triggered SC strategy is proposed in this paper.First,a dynamic consensus-based distributed average state observer is designed for DC microgrids,and the convergence under weight-balanced directed networks is proved.Decentralized observation-based SC is designed and the SC structure is proved to be equivalent to a virtually fully connected network with good dynamic performance.Then,a distributed self-triggered mechanism is proposed to achieve intermittent communication between generator-generator and generator-networked sensors as well as intermittent SC computation,thus proving Lyapunov stability.Finally,a trigger time corrector is designed to improve the self-trigger response speed.MATLAB/Simulink simulations show that the proposed method can reduce communication and update frequencies of SC by 95%and 75%in quasi-steady states compared with periodical SC.Furthermore,it reduces the trigger frequency by 54.6%compared with currently available method.The communication and computation burden can be effectively lowered,and system practicability as well as reliability can be significantly improved.关键词
二次控制/协调控制/事件触发/分布式自触发/多母线直流微电网/动态一致性/单向通信/权重平衡图Key words
secondary control/cooperative control/event-triggered/distributed self-triggered/multi-bus DC microgrid/dynamic consensus/directed communication/weight-balanced graph分类
信息技术与安全科学引用本文复制引用
李学成,胡长斌,罗珊娜,陆珩,范辉,马瑞..基于观测器的有向通信下多母线直流微电网分布式自触发二次调节[J].中国电机工程学报,2024,44(22):8771-8785,中插7,16.基金项目
国家重点研发计划项目(2021YFE0103800) （2021YFE0103800）
北方工业大学组织科研项目(2023YZZKY05) （2023YZZKY05）
北京市教育委员会科学研究计划项目资助(KM201710009002). National Key R&D Program of China(2021YFE0103800) （KM201710009002）
Organized Scientific Research Project of North China University of Technology(2023YZZKY05) （2023YZZKY05）
R&D Program of Beijing Municipal Education Commission(KM201710009002). （KM201710009002）
