A Robust Control Strategy for Eliminating the Structure Disturbance of Islanding Microgrid

被引：0

作者：

Sun X. ^{[1
]}

Ma H. ^{[1
]}

Jia L. ^{[1
,2
]}

Li X. ^{[1
]}

机构：

[1] Key Lab of Power Electronics for Energy Conservation & Motor Drive of Hebei Province, Yanshan University, Qinhuangdao

[2] Key Lab of Electromagnetic Transformation and Detection of Henan Province, Luoyang Normal University, Luoyang

来源：

Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2020年 / 35卷 / 11期

关键词：

Master-slave control; Mixed sensitivity; Robust control; Smart grid;

D O I：

10.19595/j.cnki.1000-6753.tces.181500

中图分类号：

学科分类号：

摘要：

The distributed generation devices are operated in parallel by solid state transformer (SST), after utilizeing the communication system, an intelligent microgrid can be formed, the master-slave control can be adopted by utilizeing the advantage of communication when the smart grid is running in islanded condition. During the operation of the system, if the slave is cut off because of the fault or reconnected after repaired, the structure of the system will be changed, which will affect the stability of the system. For dealing with this problem, the uncertainty of the master's model is analyzed in this paper, and then the robust controller is designed based on the mixed sensitivity for master-slave control of microgrid. The master uses the designed robust controller to supprot voltage for the entire system. Through the designed robust controller, the robustness of the system voltage to the disturbance caused by the change of the number of slaves is enhanced, so that the system voltage amplitude and frequency can be stabilized when the number of slaves or load changes. Finally, the simulation and experimental verification of the Matlab/Simulink simulation platform and the RTDS controller hardware in the loop (CHIL) platformare carried out. The results show the effectiveness of the proposed controller. © 2020, Electrical Technology Press Co. Ltd. All right reserved.

引用

页码：2427 / 2438

页数：11

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