Transient power angle stability control method of VSG considering fault current limitation

被引：0
作者：
Tu C. [1 ]
Yang W. [1 ]
Xiao F. [1 ]
Guo Q. [1 ]
He X. [2 ]
机构：
[1] National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha
[2] College of Electrical and Information Engineering, Hunan Institute of Technology, Hengyang
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2023年 / 43卷 / 09期
基金：
中国国家自然科学基金;
关键词：
combined regulation; fault current limitation; symmetrical short circuit fault; transient power angle stability control; virtual synchronous generator; voltage drop;
D O I：
10.16081/j.epae.202308001
中图分类号：
学科分类号：
摘要：
When a serious fault occurs in the power grid，the virtual synchronous generator（VSG） is prone to power angle instability and fault current exceeding the limit. Most of the existing methods ignore the internal correlation between power angle instability and fault overcurrent and deal with them separately，which makes it difficult to solve the two problems simultaneously. Therefore，the transient power angle characteristic and fault current characteristic of VSG are analyzed，and the causes and relations of the above problems are explained. Based on the phase diagram theory，the transient power angle stability of VSG under multiple influencing factors is analyzed，and a transient power angle stability control method of VSG considering fault current limitation is proposed. On the basis of adaptively adjusting the active power command to keep the power angle stable，the proposed method regulates the reactive power regulation coefficient jointly. In addition，a quasi-static approximate virtual impedance is introduced to realize both transient power angle stability and total fault current limitation of VSG during fault. Simulative and experimental results verify the correctness of the theoretical analysis and the effectiveness of the proposed control method. © 2023 Electric Power Automation Equipment Press. All rights reserved.
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页码：55 / 62and94
页数：6239
相关论文
共 25 条
  • [1] SHEN Chao, SHUAI Zhikang, CHENG Huijie, Transient synchronization stability analysis of system with paralleled virtual synchronous generators and current-controlled converters［J］, Automation of Electric Power Systems, 45, 10, pp. 115-123, (2021)
  • [2] YANG Wanli, TU Chunming, LAN Zheng, Et al., Flexible interconnection strategy between DC microgrid and AC distribution grid based on energy storage flexible multi-state switch ［J］, Electric Power Automation Equipment, 41, 5, pp. 254-260, (2021)
  • [3] An improved control strategy of virtual synchronous generator under symmetrical grid voltage sag［J］, International Journal of Electrical Power & Energy Systems, 121, (2020)
  • [4] SHUAI Z K, HUANG W, Et al., Characteristics and restraining method of fast transient inrush fault currents in synchronverters［J］, IEEE Transactions on Industrial Electronics, 64, 9, pp. 7487-7497, (2017)
  • [5] DIVAN D M., Virtual impedance current limiting for inverters in microgrids with synchronous generators［J］, IEEE Transactions on Industry Applications, 51, 2, pp. 1630-1638, (2015)
  • [6] YANG Songhao, LI Bingfang, ZHAO Tianqi, Et al., Transient angle instability mode and mechanism of distributed synchronous condensers in renewable energy station［J］, Automation of Electric Power Systems, 47, 3, pp. 12-18, (2023)
  • [7] An adaptive parameter-based control technique of virtual synchronous generator for smooth transient between islanded and grid-connected mode of operation［J］, IEEE Access, 9, pp. 137322-137337, (2021)
  • [8] Flexible virtual synchronous generator control for distributed generator with adaptive inertia［J］, Electric Power Components and Systems, 47, 1/2, pp. 128-140, (2019)
  • [9] CHU Wencong, LIU Jingli, LI Yonggang, Et al., Small-signal modeling and stability analysis of virtual synchronous PMSG considering source characteristics［J］, Electric Power Automation Equipment, 42, 8, pp. 3-10, (2022)
  • [10] GUAN Minyuan, Automatic energy control of grid-connected energy storage system under virtual synchronous generator operation［J］, Automation of Electric Power Systems, 46, 23, pp. 144-150, (2022)
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