Study on propagation characteristics of sub-synchronous oscillations in wind farm via MMC-HVDC system

被引：0
|
作者：
Cao, Yuelong [1 ]
Zou, Xiaoming [2 ,3 ]
Qiu, Ziming [1 ]
Du [1 ]
机构：
[1] School of Electrical Engineering, Chongqing University, Chongqing,400044, China
[2] Jiangsu Electric Power Test Research Institute Co. Ltd., Nanjing,211103, China
[3] State Grid Jiangsu Electric Power Co. Ltd. Research Institute, Nanjing,211103, China
来源：
Huazhong Keji Daxue Xuebao (Ziran Kexue Ban)/Journal of Huazhong University of Science and Technology (Natural Science Edition) | 2024年 / 52卷 / 07期
关键词：
Aiming at the problem that the sub-synchronous oscillations in the wind farm via modular multilevel converter based high-voltage direct current(MMC-HVDC) system will propagate between the AC and DC sides of the converter; the sub-synchronous oscillation propagation coefficients were proposed to quantitatively describe the propagation of the sub-synchronous oscillations in the system. Based on the sub-synchronous oscillation propagation coefficients; the sub-synchronous oscillation propagation characteristics in the MMC-HVDC system were studied; and based on the characteristics; the placement of the sub-synchronous oscillation monitoring equipment in the system was determined. At the same time; the criterion of determining the dominant converter for the oscillation was proposed. The results show that the sub-synchronous oscillation may be amplified in the propagating from the AC side to the DC side of the sending-end converter; and further propagate to the AC side of the receiving-end converter; therefore; the oscillation monitoring equipment should be placed in the DC side of the MMC-HVDC system and the AC side of the receiving-end converter.The sub-synchronous oscillations can hardly propagate from the DC side to the AC side of the sending-end converter; when a significant oscillation phenomenon is observed in the wind farm; it can be judged that the sending-end converter is the dominant converter in the wind farm via MMC-HVDC system. © 2024 Huazhong University of Science and Technology. All rights reserved;
D O I：
10.13245/j.hust.240590
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页码：29 / 36
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