Cascading Synchronization Instability in Multi-VSC Grid-Connected System

被引：23
|
作者：
Fu, Xikun [1 ]
Huang, Meng [1 ]
Pan, Shangzhi [1 ]
Zha, Xiaoming [1 ]
机构：
[1] Wuhan Univ, Sch Elect Engn & Automat, Wuhan 430072, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2022年 / 37卷 / 07期
基金：
中国国家自然科学基金;
关键词：
Synchronization; Power system stability; Thermal stability; Stability criteria; Transient analysis; Power system dynamics; Power electronics; Grid-following (GFL) control; interaction; synchronization stability; voltage-source converter (VSC); STABILITY;
D O I：
10.1109/TPEL.2022.3153283
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：
In this letter, a cascading synchronization instability phenomenon is reported in a multi-voltage-source-converter (VSC) grid. By adopting the equal area criterion, it is revealed that during the fault transient, there is static interaction that increases equivalent mechanical power for the original stable-operating VSC. Due to the fast power angle swing of the unstable VSC, there is nonnegligible dynamic interaction, which may decrease its synchronization stability margin. The effect of system parameters on synchronization stability is studied, and the simulation and experimental results verify the analysis.
引用
收藏
页码：7572 / 7576
页数：5
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