Grid-connected active power oscillation suppression strategy of an energy storage VSG based on active power feed-forward compensation

被引：0
作者：
Shi R. [1 ,2 ,3 ]
Lan C. [1 ]
Wang G. [1 ]
Liu W. [1 ]
Huang J. [2 ]
Wang B. [3 ]
机构：
[1] College of Mechanical and Control Engineering, Guilin University of Technology, Guilin
[2] Guangxi Special Equipment Inspection and Research Institute, Nanning
[3] School of Information Science and Engineering, Wuhan University of Science and Technology, Wuhan
来源：
Dianli Xitong Baohu yu Kongzhi/Power System Protection and Control | 2023年 / 51卷 / 14期
关键词：
active power feed-forward compensation; dynamic oscillation; frequency overshoot; small-signal model; steady-state deviation; virtual synchronous generator;
D O I：
10.19783/j.cnki.pspc.221643
中图分类号：
学科分类号：
摘要：
In a traditional energy storage virtual synchronous generator (VSG) with grid-connected active power (GCAP) it is difficult to balance the steady-state deviation and dynamic oscillation, because of the coupling of its primary frequency modulation coefficient and virtual damping coefficient. Thus a GCAP dynamic oscillation suppression strategy for an energy storage VSG based on active power feed-forward compensation is proposed. The active power is fed-forward to the GCAP closed control loop through the first-order low-pass filter, and the GCAP dynamic performance for energy storage VSG is optimized by adjusting the feed-forward parameter without using the differential operation. The VSG primary frequency modulation characteristic is not affected. Then a small signal model of GCAP closed-loop for the energy storage VSG based on active power feed-forward compensation is established, and the setting method of the feed-forward coefficient is given. Finally, comparison of simulation and experimental test is used to verify that the proposed strategy can effectively eliminate the steady-state deviation, and dynamic oscillation of GCAP of the energy storage VSG under two-step disturbances of active power command as well as grid frequency, and there is no risk of frequency overshoot. © 2023 Power System Protection and Control Press. All rights reserved.
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收藏
页码：118 / 126
页数：8
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