Small-Signal Synchronous Stability Analysis for 100% Power Electronics-Based Power System with Distributed Grid-Forming Converters

IF 6.2 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Modern Power Systems and Clean Energy Pub Date : 2026-09-01 Epub Date: 2025-12-23 DOI:10.35833/MPCE.2025.000058

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

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引用次数: 0

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.

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分布式并网变流器100%电力电子电力系统的小信号同步稳定性分析

在100%电力电子化的电力系统中，分布式并网变流器之间的相互作用会引发小信号同步失稳。提出了一种新的小信号同步稳定性分析方法。首先，建立了100%电力电子化电力系统的通用小信号模型。然后，提出了一种基于主导同步控制环的框架，该框架可以明确识别电压控制和无功电压控制两种主要的交互路径。通过基于主导模式的模型约简，将两种相互作用路径简化为一阶传递函数。通过集成选定的同步控制回路，导出了一个简化的二阶模型，该模型可以提供对小信号同步稳定性的清晰物理见解。最后，RT-LAB硬件在环平台的实验结果验证了所提方法的有效性。

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来源期刊

Journal of Modern Power Systems and Clean Energy ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

12.30

自引率

14.30%

发文量

审稿时长

13 weeks

期刊介绍： Journal of Modern Power Systems and Clean Energy (MPCE), commencing from June, 2013, is a newly established, peer-reviewed and quarterly published journal in English. It is the first international power engineering journal originated in mainland China. MPCE publishes original papers, short letters and review articles in the field of modern power systems with focus on smart grid technology and renewable energy integration, etc.