Controller-Saturation-Based Transient Stability Enhancement for Grid-Forming Inverters

被引：8
|
作者：
Luo, Cheng [1 ,2 ]
Ma, Xikui [1 ]
Liu, Teng [2 ]
Wang, Xiongfei [2 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Elect Engn, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China
[2] Aalborg Univ, AAU Energy, DK-9220 Aalborg, Denmark
来源：
IEEE TRANSACTIONS ON POWER ELECTRONICS | 2023年 / 38卷 / 02期
关键词：
Inverters; Transient analysis; Power system stability; Stability criteria; Thermal stability; Voltage control; Active filters; Equal-area criterion (EAC); grid-forming (GFM) inverters; saturation block (SB); transient stability; SYNCHRONVERTERS INVERTERS; POWER;
D O I：
10.1109/TPEL.2022.3213757
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：
This article reveals that the saturation block (SB) used with the power-angle control loop can enhance the transient stability of grid-forming (GFM) inverters. Three methods of using the SB in the power-angle loop are examined based on power-angle curves. It is found that all can enhance the transient stability of GFM inverters by either decreasing the acceleration area or increasing the deceleration area. At the same time, the threshold value selection of SB in the three schemes is also explained, considering the tradeoff between the transient stability and the response speed. A holistic comparison of the three schemes recommends the scheme with the SB used for power error adopted by the GFM inverters. Finally, experimental tests confirm the effectiveness and correctness of the analysis.
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页码：2646 / 2657
页数：12
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