Home Journals Articles Updates About
CN
image
收藏切换
Transient Instability Boundary of PLL-synchronous VSC in Multiple Scenarios
收藏切换
PDF
Zheng CHEN1, Pengfei HU1, Zaixin YANG2, Yanxue YU1, Chongxi JIANG3
Journal of Power Supply | 2025, 23(1) : 84 - 92
Less
收藏切换
Journal of Power Supply | 2025, 23(1): 84-92
• Renewable Energy System •
Transient Instability Boundary of PLL-synchronous VSC in Multiple Scenarios
Full
Zheng CHEN1, Pengfei HU1, Zaixin YANG2, Yanxue YU1, Chongxi JIANG3
Affiliations
  • 1 College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
  • 2 Inner Mongolia Electric Power Research Institute, Hohhot 010020, China
  • 3 Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310001, China
Published: 2025-01-30 doi: 10.13234/j.issn.2095-2805.2025.1.84
Outline
收藏切换

Aimed at the transient instability of a voltage source converter (VSC) based on phase locked loop (PLL) under weak network conditions and considering the influences of power grid line impedance, VSC reactive power injection and PLL filtering, the transient instability boundary of VSC is comprehensively studied based on the critical voltage in a variety of fault scenarios such as grid voltage sag, frequency fluctuation and three-phase asymmetric fault. Through the analysis of the VSC grid-connected vector diagram in different operation scenarios, the mathematical models of relationships between the grid voltage of VSC grid-connected system and factors (e.g., line impedance and impedance angle, VSC operation power and its power factor, PLL phase-locked error, and grid frequency) in multiple scenarios are established. Then, the transient instability boundary of VSC is indicated based on the critical voltage. Results show that both the line resistance and reactive power injection can directly reduce the critical voltage and improve the stability of the system. The increase or decrease in grid-side frequency will directly lead to the phase lag or lead of PLL and an increase or decrease in line reactance, thus indirectly affecting the critical voltage and further affecting the transient stability of VSC. The PLL pre-filter may cause errors in the phase-locked result, and its phase lag or lead will reduce or increase the critical instability voltage of the system, respectively.

Voltage source converter (VSC)  /  transient stability  /  multiple scenarios  /  phase locked loop (PLL)
Zheng CHEN, Pengfei HU, Zaixin YANG, Yanxue YU, Chongxi JIANG. Transient Instability Boundary of PLL-synchronous VSC in Multiple Scenarios[J]. Journal of Power Supply, 2025 , 23 (1) : 84 -92 . DOI: 10.13234/j.issn.2095-2805.2025.1.84
Funding
Less
  • Inner Mongolia Autonomous Region Major Science and Technology Project(2021ZD0026)
  • Natural Science Foundation of Zhejiang Province(LQ21E070004)
  • National Natural Science Foun-dation of China(52007167)
Appendix
Less
Year 2025 volume 23 Issue 1
PDF
313
114
Cite this Article
BibTeX
Article Info
doi: 10.13234/j.issn.2095-2805.2025.1.84
  • Receive Date：2022-06-11
  • Online Date：2025-07-01
  • Published：2025-01-30
Article Data
Affiliations
History
  • Received：2022-06-11
  • Revised：2022-08-12
  • Accepted：2022-09-27
Funding
Inner Mongolia Autonomous Region Major Science and Technology Project(2021ZD0026)
Natural Science Foundation of Zhejiang Province(LQ21E070004)
National Natural Science Foun-dation of China(52007167)
Affiliations
    1 College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China
    2 Inner Mongolia Electric Power Research Institute, Hohhot 010020, China
    3 Hangzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310001, China
References
Share
https://castjournals.cast.org.cn/joweb/dyxb/EN/10.13234/j.issn.2095-2805.2025.1.84
Share to
QR

Scan QR to access full text

Cite this article
BibTeX
Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
关闭全屏
  • BibTeX
  • EndNote
  • RefWorks
  • TxT
Links
Articles
Latest Articles
Most Read
Collections
Updates
Events
News
Multimedia
About
About Us
Contact
No. 86 Xueyuan South Road, Haidian District, Beijing
100081
010-62199257
qkjq@cast.org.cn

Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House