Transient Stability Analysis of PLL Synchronization in Weak-grid-connected VSCs Based on the Largest Estimated Domain of Attraction

被引：0
|
作者：
Li X. [1 ]
Wang Z. [1 ]
Guo L. [1 ]
Zhu L. [1 ]
Zhang C. [1 ]
Zhu J. [1 ]
Fu X. [1 ]
Zhang Y. [2 ]
Wang C. [1 ]
机构：
[1] Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Nankai District, Tianjin
[2] State Key Laboratory of HVDC (Electric Power Research Institute, China Southern Power Grid), Guangdong Province, Guangzhou
来源：
Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2022年 / 42卷 / 20期
基金：
中国博士后科学基金; 国家重点研发计划; 中国国家自然科学基金;
关键词：
feasible region of current settings; largest estimated domain of attraction (LEDA); the linear matrix inequality (LMI) optimization method; transient stability of PLL synchronization;
D O I：
10.13334/j.0258-8013.pcsee.211899
中图分类号：
学科分类号：
摘要：
This paper mainly focused on transient stability issues of the weak grid connected voltage source converter (WG-VSC) system under phase-locked loop synchronization. Firstly, the linear matrix inequality optimization method was applied to construct the largest estimated domain of attraction (LEDA) of the WG-VSC system. Compared with the LEDA constructed by the energy function method based on the LaSalle invariant principle and the LEDA constructed by the sum-of-square programming method, the proposed method was less conservative in characterizing LEDA. Then, for ensuring the transient stability during the fault ride-through process, the concept of the feasible region of current settings of the WG-VSC system under symmetrical grid faults was proposed. Furthermore, based on the LEDA characterized by the proposed linear matrix inequality optimization method, the solution algorithm of this feasible region was derived. The influence of typical parameters on this feasible region was analyzed. It should be noted that this feasible region can provide practical guidance for the current settings under faults. Finally, a detailed switching model of WG-VSC system based on PSCAD/EMTDC was built. Detailed simulation results have verified the LEDA constructed and the feasible region of current settings. ©2022 Chin.Soc.for Elec.Eng.
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页码：7485 / 7496
页数：11
相关论文
共 24 条
  • [1] XIE Xiaorong, HE Jingbo, MAO Hangyin, New issues and classification of power system stability with high shares of renewables and power electronics[J], Proceedings of the CSEE, 41, 2, pp. 461-475, (2021)
  • [2] ZHENG Chao, ZHANG Xin, Study on the large disturbance behavior mechanism and stability control strategy for VSC-HVDC and weak AC hybrid system[J], Proceedings of the CSEE, 39, 3, pp. 629-641, (2019)
  • [3] ROCABERT J, LUNA A, BLAABJERG F, Control of power converters in AC microgrids[J], IEEE Transactions on Power Electronics, 27, 11, pp. 4734-4749, (2012)
  • [4] GRAUNGAARD T, WANG Xiongfei, DENMARK P, An overview of assessment methods for synchronization stability of grid-connected converters under severe symmetrical grid faults[J], IEEE Transactions on Power Electronics, 34, 10, pp. 9655-9670, (2019)
  • [5] WANG Xubin, DU Wenjuan, WANG Haifeng, Stability analysis of grid-tied VSC systems under weak connection conditions[J], Proceedings of the CSEE, 38, 6, pp. 1593-1604, (2018)
  • [6] LI Pengfei, LI Xialin, WANG Chengshan, Review of stability analysis model and mechanism research of medium-and low-voltage flexible DC distribution system[J], Electric Power Automation Equipment, 41, 5, pp. 3-21, (2021)
  • [7] YIN Rui, SUN Yuanyuan, WANG Shanshan, The Modeling and stability analysis of dual-infeed VSC based on the single-input and single-output transfer function model[J], Proceedings of the CSEE, 41, 19, pp. 6724-6739, (2021)
  • [8] HU Qi, FU Lijun, MA Fan, Et al., Small signal synchronizing stability analysis of PLL-based VSC connected to weak AC grid[J], Proceedings of the CSEE, 41, 1, pp. 98-108, (2021)
  • [9] Xiuqiang HE, Hua GENG, Shaokang MA, Transient stability analysis of grid-tied converters considering PLL’ s nonlinearity[J], CPSS Transactions on Power Electronics and Applications, 4, 1, pp. 40-49, (2019)
  • [10] ZHANG Yu, CAI Xu, ZHANG Chen, Transient synchronization stability analysis of voltage source converters：a review[J], Proceedings of the CSEE, 41, 5, pp. 1687-1701, (2021)
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