Large-Signal Stability Analysis and Control for Small-Scale AC Microgrids With Single Storage

被引：17
|
作者：
Xia, Yanghong [1 ]
Lv, Zeyan [1 ]
Wei, Wei [1 ]
He, Hanghang [1 ]
机构：
[1] Zhejiang Univ, Coll Elect Engn, Hangzhou 310027, Peoples R China
来源：
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS | 2022年 / 10卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Power system stability; Microgrids; Generators; Damping; Voltage control; Stability criteria; Phase locked loops; Large-signal stability; limitation link; microgrid; stability enhancement; structure change; virtual synchronous damping control; CONVERTERS; IMPEDANCE; SYSTEMS;
D O I：
10.1109/JESTPE.2021.3135892
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Small-signal stability studies of ac microgrids have obtained abundant results, however, the large-signal stability is still a great challenge and this topic is little studied. In this article, the nonlinear reduced-order model of small-scale ac microgrids with single storage is established considering the structure changes of converters under large disturbances. Then, the large-signal stability is analyzed and the unstable mechanism is revealed. It is found that the structural changes caused by the limitation links have a great influence on the system stability. Based on the unstable mechanism, the virtual synchronous damping control is proposed to enhance the large-signal stability of ac microgrids. The effectiveness of the proposed analysis and control methods is validated through related case studies.
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页码：4809 / 4820
页数：12
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