Black-box Modeling of Virtual Synchronous Generator Based on Transient Response Analysis Under Grid Disturbances

被引：0
|
作者：
Jiang J. [1 ]
Wang W. [1 ]
Tang F. [1 ]
Wu X. [1 ]
Li X. [2 ]
Yang Z. [1 ]
机构：
[1] National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Haidian District, Beijing
[2] China Electric Power Research Institute, Haidian District, Beijing
来源：
Dianwang Jishu/Power System Technology | 2020年 / 44卷 / 11期
关键词：
Black-box modeling; Energy storage system; Parameter identification; Polytopic model; Virtual synchronous generator;
D O I：
10.13335/j.1000-3673.pst.2020.0122a
中图分类号：
学科分类号：
摘要：
Modeling and simulation are powerful tools to study on the control application of the energy storage system. For the control of the virtual synchronous generator (VSG) of the energy storage inverter, this paper proposes a black-box modeling method based on the transient response analysis under the grid disturbances. Firstly, based on the second-order nonlinear model of VSG and its small signal perturbation processing ability near the working point, the influence of the grid operation conditions and the power instructions on the black-box parameters is analyzed, and it confirms that the Output Error (OE) model is adopted to identify the MPf while the Polytopic model is adopted to identify the MQU. Furthermore, the suitable conditions for OE model are analyzed and the identification and modeling process are presented. Using the frequency and voltage step disturbances, the modal information on power oscillation of VSG is energized, and then the least-square method is utilized to estimate the parameters. Finally, the black-box model is built with the experimental measurements and the effectiveness of the model is verified. Meanwhile, the simulation speed and storage space of the black-box model are compared with that of the detailed simulation model in Matlab/Simulink to ensure its applicability for system-level simulation and analysis. © 2020, Power System Technology Press. All right reserved.
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页码：4227 / 4235
页数：8
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