Optimal Configuration of Grid-following/Grid-forming Switchable Units in New Energy Stations Based on Operating Short-circuit Ratio

被引：0
|
作者：
Zhou Y. [1 ]
Yao W. [1 ]
Zong Q. [1 ]
Zhou H. [1 ]
Zhao H. [1 ]
Wen J. [1 ]
机构：
[1] State Key Laboratory of Advanced Electromagnetic Engineering and Technology, Huazhong University of Science and Technology), Hubei Province, Wuhan
来源：
Dianwang Jishu/Power System Technology | 2024年 / 48卷 / 03期
关键词：
eigenvalue analysis; GFL/GFM switching; new energy station; proportional configuration; sub-synchronous oscillation;
D O I：
10.13335/j.1000-3673.pst.2023.1448
中图分类号：
学科分类号：
摘要：
The existing new energy stations based on the traditional grid-following control can hardly adapt to the weak grid. Retrofitting some units with a grid-following/ grid-forming switching function can enhance the station's operation capability with a weak grid and avoid the problem of sub-synchronous oscillation. Firstly, this paper establishes a network switching model to achieve an undisturbed switching of grid-following and grid-forming. Secondly, this paper analyzes the stability characteristics of the new energy power unit under the grid-following and grid-forming control, and then the operating short circuit ratio is chosen as the switching index of the grid-following/grid-forming control. Thirdly, a new energy station switching scheme based on the operating short circuit ratio is proposed, and the optimal configuration method of the switchable unit is proposed. Finally, the rationality and superiority of the proposed configuration method are verified by simulation examples. © 2024 Power System Technology Press. All rights reserved.
引用
收藏
页码：1091 / 1102
页数：11
相关论文
共 21 条
  • [1] QIN Shiyao, QI Chen, LI Shaolin, Et al., Review of the voltage-source grid forming wind turbine, Proceedings of the CSEE, 43, 4, pp. 1314-1333, (2023)
  • [2] LIU Pengyin, XIE Xiaorong, LI Yuan, Et al., Mechanism and characteristics of grid-forming control for improving sub/super synchronous oscillation stability of grid-following-based grid-connected Converter, Power System Technology, pp. 1-9, (2023)
  • [3] CHEN Lujie, XU Shiyun, SUN Huadong, Et al., A survey on wide-frequency oscillation for power systems with high penetration of power electronics, Proceedings of the CSEE, 41, 7, pp. 2297-2309, (2021)
  • [4] LIU Fang, LIU Wei, WANG Haodong, Et al., Review on oscillation mechanism and analysis methods of high proportion renewable energy power system, High Voltage Engineering, 48, 1, pp. 95-113, (2022)
  • [5] ZHU Tingmeng, SUN Haishun, QIN Shiyao, Et al., Sub-synchronous oscillation in DFIG system connected to weak grid, Power System Technology, 45, 5, pp. 1641-1647, (2021)
  • [6] YAN Peilei, GE Xinglai, WANG Huimin, Et al., PLL parameter optimization design for renewable energy grid-connected inverters in weak grid, Power System Technology, 46, 6, pp. 2210-2221, (2022)
  • [7] XU Jieyi, LIU Wei, LIU Shu, Et al., Current state and development trends of power system converter grid-forming control technology, Power System Technology, 46, 9, pp. 3586-3594, (2022)
  • [8] HAN Yingsheng, SUN Haishun, QIN Shiyao, Et al., Low-frequency stability analysis of voltage-sourced doubly-fed wind power grid-connected system under small disturbance, Transactions of China Electrotechnical Society, 38, 5, pp. 1312-1324, (2023)
  • [9] WANG Xiongfei, TAUL M G, WU Heng, Et al., Grid-synchronization stability of converter-based resources-an overview[J], IEEE Open Journal of Industry Applications, 1, pp. 115-134, (2020)
  • [10] WANG Dongze, SUN Haishun, HUANG Biyue, Et al., Analysis of grid-connected stability of voltage-source-type PMSG-based wind turbine based on virtual synchronous control, High Voltage Engineering, 48, 8, pp. 3282-3294, (2022)
123