Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy

Yi Du; Chao Zheng; Huadong Sun

doi:10.17775/CSEEJPES.2023.08340

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Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy

Regular Papers | 更新时间：2026-10-10

- Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy
- Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy
- 中国电机工程学会电力与能源系统学报(英文) 2026年12卷第5期页码：2467-2479
- 作者机构：
  
  State Key Laboratory of Power Grid Safety and Energy Conservation, China Electric Power Research Institute,Beijing,China
- 作者简介：
- 基金信息：
- DOI：10.17775/CSEEJPES.2023.08340
  中图分类号：
- 纸质出版：2026-09-01
- 稿件说明：
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Yi Du, Chao Zheng, Huadong Sun. Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy[J]. 中国电机工程学会电力与能源系统学报(英文), 2026,12(5):2467-2479.

Yi Du, Chao Zheng, Huadong Sun. Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy[J]. CSEE Journal of Power and Energy Systems, 2026, 12(5): 2467-2479.
Yi Du, Chao Zheng, Huadong Sun. Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy[J]. 中国电机工程学会电力与能源系统学报(英文), 2026,12(5):2467-2479. DOI： 10.17775/CSEEJPES.2023.08340.

Yi Du, Chao Zheng, Huadong Sun. Transient Stability Analysis of Multiple GFM Converters Connected into an Equivalent Grid from Perspective of Unbalanced Energy[J]. CSEE Journal of Power and Energy Systems, 2026, 12(5): 2467-2479. DOI： 10.17775/CSEEJPES.2023.08340.

摘要

Abstract

This paper investigates the transient stability problem in a scenario where multiple grid forming (GFM) converters are connected into an equivalent grid

from the perspective of transient unbalanced energy (TUE). Initially

a multi-machine grid-connected system called the GFM-MMGC system is constructed

and a theoretical analysis model for large disturbances is established. Subsequently

a TUE accumulation-based discrimination method is proposed to determine the transient stability of the GFM-MMGC system. By analyzing the TUE of GFM units

the impacts of key factors

including active and reactive control parameters

current limiting strategies

and access system strength

on the transient stability characteristics of the GFM-MMGC system are revealed. Consequently

improved methods can be developed to enhance transient stability. Finally

the simulated results validate the correctness of the proposed mechanism analysis and improvement methods.

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