Multi-timescale Modeling and Dynamic Stability Analysis for Sustainable Microgrids:State-of-the-art and Perspectives  

作　　者：Mingyue Zhang Yang Han Yuxiang Liu Amr S.Zalhaf Ensheng Zhao Karar Mahmoud Mohamed M.F.Darwish Frede Blaabjerg 

机构地区：[1]the School of Mechanical and Electrical Engineering,University of Electronic Science and Technology of China,Chengdu 611731,China [2]IEEE [3]不详 [4]the University of Electronic Science and Technology of China(UESTC),Chengdu,China [5]Aswan University [6]the School of Electrical Engineering,Aalto University,Finland [7]the Department of Electrical Engineering,Faculty of Engineering at Shoubra,Benha University [8]the Department of EEA,School of Electrical Engineering,Aalto University

出　　处：《Protection and Control of Modern Power Systems》2024年第3期1-35,共35页现代电力系统保护与控制（英文）

基　　金：partly supported by the National Natural Science Foundation of China(NSFC)(No.51977026);the Science and Technology Program of Sichuan Province(No.2021YFG0255);the Sichuan Pro-vincial Postdoctoral Science Foundation(No.246861).

摘　　要：The increasing trend for integrating renewable energy sources into the grid to achieve a cleaner energy system is one of the main reasons for the development of sustainable microgrid(MG)technologies.As typical power-electronized power systems,MGs make extensive use of power electronics converters,which are highly controllable and flexible but lead to a profound impact on the dynamic performance of the whole system.Compared with traditional large-capacity power systems,MGs are less resistant to perturbations,and various dynamic variables are coupled with each other on multiple timescales,resulting in a more complex system instability mechanism.To meet the technical and economic challenges,such as active and reactive power-sharing,voltage,and frequency deviations,and imbalances between power supply and demand,the concept of hierarchical control has been introduced into MGs,allowing systems to control and manage the high capacity of renewable energy sources and loads.However,as the capacity and scale of the MG system increase,along with a multi-timescale control loop design,the multi-timescale interactions in the system may become more significant,posing a serious threat to its safe and stable operation.To investigate the multi-timescale behaviors and instability mechanisms under dynamic inter-actions for AC MGs,existing coordinated control strategies are discussed,and the dynamic stability of the system is defined and classified in this paper.Then,the modeling and assessment methods for the stability analysis of multi-timescale systems are also summarized.Finally,an outlook and discussion of future research directions for AC MGs are also presented.

关 键 词：Sustainable microgrid hierarchical control modeling model simplification multi-timescale dynamic stability analysis timescale decomposition. 

分 类 号：TM727[电气工程—电力系统及自动化]