H∞ Robustness for Distributed Control in Autonomous Microgrids Considering Cyber Disturbances  

作　　者：Ge Cao Guannan Lou Wei Gu Lina Sheng 

机构地区：[1]School of Electrical Engineering,Southeast University,Nanjing 210096,China

出　　处：《CSEE Journal of Power and Energy Systems》2024年第2期696-706,共11页中国电机工程学会电力与能源系统学报（英文）

摘　　要：The physical connections and logical relationships between microgrids and communication networks allow microgrids to develop into typical cyber-physical systems(CPSs).With the extensive use of open communication mechanisms,the impact of cyber disturbances in public communication networks cannot be diminshed.In this paper,a parameter optimal method for a distributed secondary controller based on the robust control theory and consensus algorithm is presented to enhance the robustness of a secondary control system under data disturbance,parameter perturbation,and time delay.First,a distributed secondary control strategy of microgrids is demonstrated that coordinates frequency and voltage restoration and power sharing.Then,considering the impact of cyber events on the secondary control,a distributed robust controller gain design method is proposed to satisfy the H∞ performance index.The solution of the distributed robust control is transformed into a linear matrix in equation problem and latency margin is simultaneously obtained.Finally,a test microgrid CPS is simulated with and without time delay to investigate the impact of cyber events on system operational states and the effectiveness and robustness of the proposed method.

关 键 词：Cyber disturbance cyber-physical lsystem distributed control MICROGRID robust H∞control 

分 类 号：TM727[电气工程—电力系统及自动化]