VSG Control Strategy With Transient Electromagnetic Power Compensation

被引：0
|
作者：
Lan Z. [1 ]
Long Y. [1 ]
Zeng J. [1 ]
Lü Z. [2 ]
He D. [1 ]
Hou C. [1 ]
机构：
[1] College of Electrical and Information Engineering, Hunan University of Technology, Zhuzhou
[2] State Grid Shanghai Energy Internet Research Institute Co., Ltd., Pudong New Area, Shanghai
来源：
Dianwang Jishu/Power System Technology | 2022年 / 46卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Active oscillation; Root locus analysis; Small signal model reduction; Transient electromagnetic power compensation; Virtual synchronous generator;
D O I：
10.13335/j.1000-3673.pst.2021.1271
中图分类号：
学科分类号：
摘要：
While it increases the inertia of the grid-connected system, the virtual synchronous generator (VSG) also brings about the problem of active power oscillation under the grid disturbance. For this reason, a VSG control strategy and system model reduction method that brings in the transient electromagnetic power compensation are proposed. A closed-loop active power small-signal model of the system is established. The root locus method is used to analyze the influence of transient electromagnetic power compensation on the power stability of the VSG, and the transient damping strategy is compared; further, by removing the least influence item on the system stability from the small-signal model, the order is reduced to obtain the equivalent second-order model of the system. Based on this second-order model, the quantitative design criteria of the system parameters are given. The proposed introduction of transient electromagnetic power compensation strategy increases the transient equivalent damping of the system without affecting the primary frequency modulation characteristics, and does not cause a large overshooting of the output active power. The simulation verification and theoretical analysis results are consistent, which proves the effectiveness and correctness of the system control strategy and the model reduction method. © 2022, Power System Technology Press. All right reserved.
引用
收藏
页码：1421 / 1429
页数：8
相关论文
共 21 条
  • [1] WANG Jianxue, LI Qingtao, WANG Xiuli, Et al., A generation expansion planning method for power systems with large-scale new energy, Proceedings of the CSEE, 40, 10, pp. 3114-3124, (2020)
  • [2] TIAN Feng, JIA Yanbing, REN Haiquan, Et al., Source-load" low-carbon economic dispatch of integrated energy system considering carbon capture system, Power System Technology, 44, 9, pp. 3346-3354, (2020)
  • [3] WAN Qian, XIA Chengjun, GUAN Lin, Et al., Review on stability of isolated microgrid with highly penetrated distributed generations, Power System Technology, 43, 2, pp. 598-612, (2019)
  • [4] PU Tianjiao, CHEN Sheng, ZHAO Qi, Et al., Framework design and application prospect for digital twins system of energy internet, Proceedings of the CSEE, 41, 6, pp. 2012-2028, (2021)
  • [5] LU Zhipeng, SHENG Wanxing, ZHONG Qingchang, Et al., Virtual synchronous generator and its applications in micro-grid, Proceedings of the CSEE, 34, 16, pp. 2591-2603, (2014)
  • [6] ZHENG Tianwen, CHEN Laijun, CHEN Tianyi, Et al., Review and prospect of virtual synchronous generator technologies, Automation of Electric Power Systems, 39, 21, pp. 165-175, (2015)
  • [7] MENG Jianhui, SHI Xinchun, WANG Yi, Et al., Control strategy of DER inverter for improving frequency stability of microgrid, Transactions of China Electrotechnical Society, 30, 4, pp. 70-79, (2015)
  • [8] LIU Jia, MIURA Y, ISE T., Comparison of dynamic characteristics between virtual synchronous generator and droop control in inverter-based distributed generators, IEEE Transactions on Power Electronics, 31, 5, pp. 3600-3611, (2016)
  • [9] WANG Yawei, LIU Bangyin, DUAN Shanxu, Et al., Research on transient characteristic optimization of virtual synchronization generator control strategy, Proceedings of the CSEE, 39, 20, pp. 5885-5893, (2019)
  • [10] ALIPOOR J, MIURA Y, ISE T., Power system stabilization using virtual synchronous generator with alternating moment of inertia, IEEE Journal of Emerging and Selected Topics in Power Electronics, 3, 2, pp. 451-458, (2015)
123