Small-signal Synchronous Stability Analysis for 100% Power Electronics-based Power System with Distributed Grid-forming Converters

Xialin Li; Jian Zheng; Yixin Liu; Xu Zhou; Haifeng Yu; Jiebei Zhu; Li Guo; Chengshan Wang

doi:10.35833/MPCE.2025.000058

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Small-signal Synchronous Stability Analysis for 100% Power Electronics-based Power System with Distributed Grid-forming Converters

Original Paper | 更新时间：2026-09-28

- Small-signal Synchronous Stability Analysis for 100% Power Electronics-based Power System with Distributed Grid-forming Converters
- Journal of Modern Power Systems and Clean Energy Vol. 14, Issue 5, Pages: 1659-1671(2026)
- 作者机构：
  
  1.State Key Laboratory of Smart Power Distribution Equipment and System, Tianjin University, Tianjin, China
  2.State Grid Hunan Electric Power Company Economic & Technical Research Institute, Changsha, China
- 作者简介：
  
  Xialin Li received the B.Sc. and Ph.D. degrees in electrical engineering from Tianjin University, Tianjin, China, in 2009 and 2014, respectively. In 2016, he was a Visiting Professor to the Department of Electrical and Computer Engineering, University of Alberta, Edmonton, Canada. He is currently a Professor with the School of Electrical Engineering and Automation, Tianjin University. His research interests include modeling, stability, and control of power converter and hybrid AC-DC microgrid. Email:xialinlee@tju.edu.cn
  Jian Zheng received the B.Sc. degree in electrical engineering from China Three Gorges University, Yichang, China, and the M.Sc. degree in electrical engineering from Tianjin University, Tianjin, China, in 2022 and 2025, respectively. Her research interests include modeling and stability analysis of power converter. Email:jianzheng@tju.edu.cn
  Yixin Liu received the B.S. and Ph.D. degrees in electrical engineering from Tianjin University, Tianjin, China, in 2013 and 2018, respectively. He is currently an Associate Professor with Tianjin University. His research interests include distribution system analysis and planning, energy management system of microgrid, and electricity market. Email:liuyixin@tju.edu.cn
  Xu Zhou received the B.Sc. and M.Sc. degrees in electrical engineering from North China University of Technology, Beijing, China, in 2019 and 2022, respectively. He is currently working toward the Ph.D. degree with the School of Electrical and Information Engineering, Tianjin University, Tianjin, China. His research interests include modeling, control, and stability analysis of grid-forming converter and grid-following converter. Email:zhouxu@tju.edu.cn
  Haifeng Yu is currently pursuing the Ph.D. degree in electrical engineering at Tianjin University, Tianjin, China. He is also with State Grid Hunan Electric Power Company Economic & Technical Research Institute, Changsha, China. His research interest includes power grid planning. Email:444156926@qq.com
  Jiebei Zhu received the B.Sc. degree in microelectronics from Nankai University, Tianjin, China, in 2008, and the M.Sc. and Ph.D. degrees in electronic and electrical engineering from the University of Strathclyde, Glasgow, U.K., in 2009 and 2013, respectively. From 2013 to 2018, he worked as a Senior Power System Engineer and an Innovation Project Manager with National Grid Plc., Warwick and Wokingham, U.K.. Since 2018, he has been a Professor with the Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin, China. He is also a Chartered Engineer with the U.K. Royal Engineering Council, London, U.K.. His research interests include high-voltage direct current (HVDC) transmission system control, renewable energy system, and energy storage. Email:Jiebei.zhu@tju.edu.cn
  Li Guo received the B.Sc. and Ph.D. degrees in electrical engineering from South China University of Technology, Guangzhou, China, in 2002 and 2007, respectively. He is currently a Full Professor with Tianjin University, Tianjin, China. His research interests include optimal planning and design of microgrid, coordinated operating strategy of microgrid, and advanced energy management system. Email:liguo@tju.edu.cn
  Chengshan Wang received the B.Sc., M.Sc., and Ph.D. degrees in electrical engineering from Tianjin University, Tianjin, China, in 1983, 1985, and 1991, respectively. From 1994 to 1996, he was a Visiting Scientist with Cornell University, Ithaca, USA. In 1996, he became a Full Professor with Tianjin University. From 2001 to 2002, he was a Visiting Professor with Carnegie Mellon University, Pittsburgh, USA. From 2009 to 2013, he was the Chief Scientist of the 973-project research on the key issues of distributed generation systems that was participated by Chinese power engineering scientists from eight leading institutions. His research interests include distribution system analysis and planning, distributed generation system and microgrid, and power system security analysis. Email:cswang@tju.edu.cn
- 基金信息：
- DOI：10.35833/MPCE.2025.000058
  CLC：
- Received：21 January 2025，
  
  Revised：2025-06-18，
  
  Accepted：20 November 2025，
  
  Online First：23 December 2025，
  
  Published：15 September 2026
- 稿件说明：
移动端阅览
Li Xialin,Zheng Jian,Liu Yixin,et al.Small-signal Synchronous Stability Analysis for 100% Power Electronics-based Power System with Distributed Grid-forming Converters[J].Journal of Modern Power Systems and Clean Energy,2026,14(05):1659-1671.
DOI：

Li Xialin,Zheng Jian,Liu Yixin,et al.Small-signal Synchronous Stability Analysis for 100% Power Electronics-based Power System with Distributed Grid-forming Converters[J].Journal of Modern Power Systems and Clean Energy,2026,14(05):1659-1671. DOI： 10.35833/MPCE.2025.000058.

摘要

Abstract

In 100% power electronics-based power system

small-signal synchronous instability can be trigged by interaction among distributed grid-forming converters (GFMCs). A novel small-signal synchronous stability analysis method is proposed. Firstly

a generic small-signal model for 100% power electronics-based power system is established. Then

a framework based on a dominated synchronization control loop is proposed

which can explicitly identify two main interaction paths stemming from voltage control and reactive power-voltage control. Furthermore

the two interaction paths have been simplified to first-order transfer functions through model reduction based on dominated modes. By integrating the selected synchronization control loop

a reduced second-order model that can provide clear physical insight into small-signal synchronous stability is derived. Finally

experimental results from an RT-LAB hardware-in-the-loop platform confirm the effectiveness of the proposed method.

关键词

Keywords

references

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