Transient Stability Analysis of Grid-Forming Converters During Presynchronization Process in Islanded Mode

被引：4
|
作者：
Yuan, Yi [1 ]
Ma, Junpeng [1 ]
Wang, Shunliang [1 ]
Wang, Peng [1 ]
Liu, Tianqi [1 ]
机构：
[1] Sichuan Univ, Coll Elect Engn, Chengdu 610031, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2024年 / 39卷 / 09期
基金：
中国国家自然科学基金;
关键词：
Power system stability; Transient analysis; Synchronization; Stability criteria; Voltage control; Couplings; Load modeling; Grid-forming control; islanded mode; transient stability; voltage-source converters (VSCs); VIRTUAL SYNCHRONOUS GENERATORS; SYNCHRONIZATION STABILITY; ANGLE STABILITY; INVERTERS;
D O I：
10.1109/TPEL.2024.3405740
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：
Power synchronization control (PSC) is usually used for power distribution and grid synchronization of grid-forming converters. Yet, the sequential startup of PSC for paralleled converters will cause an active power mismatch between converters and load, and then induce the synchronization stability issue. To address this problem, the transient model for grid-forming converter is proposed to elaborate the synchronization interaction among paralleled converters in the islanded mode, and the parameter boundary, including droop coefficients, power reference, and load power is analyzed in detail, etc. The mechanism of transient synchronization instability is revealed and the dynamic behaviors of paralleled converters are described by phase portraits. Then the controller parameters are designed for the converter which waits for pre-synchronization and the effects of power controller parameters on the transient synchronization stability is discussed. Finally, experimental results are provided to verify the correctness of the theoretical analysis.
引用
收藏
页码：11007 / 11019
页数：13
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