Transient Synchronization Stability Improvement Control Strategy for Grid-Connected VSC Under Symmetrical Grid Fault

被引：12
|
作者：
Huang, Sen [1 ]
Yao, Jun [1 ]
Pei, Jinxin [2 ]
Chen, Shiyue [1 ]
Luo, Yi [1 ]
Chen, Zhaoyang [1 ]
机构：
[1] Chongqing Univ, Sch Elect Engn, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
[2] Chongqing Jialing Huaguang Photoelect Technol Co, Chongqing 400700, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2022年 / 37卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Phase locked loops; Synchronization; Transient analysis; Power system stability; Torque; Stability criteria; Damping; Grid fault; improvement control strategy; transient synchronization stability; PLL; ENHANCEMENT;
D O I：
10.1109/TPEL.2021.3131361
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：
Under grid fault, the grid-connected voltage source converters (VSCs) have the risk of transient synchronization instability during low voltage ride through. Based on the equivalent rotor swing equation of VSC, this letter proposes an improved transient synchronization stability control strategy, which improves the existence of equilibrium points and transient synchronization behaviors of the VSC system. Thus, the transient synchronization stability of grid-connected VSC can be significantly enhanced. The simulation and experimental results demonstrate the validity of the proposed strategy.
引用
收藏
页码：4957 / 4961
页数：5
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