Submit

Login Login

Register Register

Home / Journals / ENERGY / Online First / doi:10.32604/ee.2025.073028
Journal Menu
Special Issues
Table of Content

All issues

Online First

2025

2024

2023

2022

2021

2020

Past Issues

Open Access

ARTICLE

Low-Frequency Oscillation Analysis of Grid-Forming Energy Storage Converters Based on a Multi-Damping Path Model

Qiang Liu1, Yongqiang Zhou1, Chaoyang Lu2, Zhen Yan1, Gangui Yan2, Cheng Yang2,*, Yupeng Wang2
1 Xingtai Power Supply Branch, State Grid Hebei Electric Power Co., Ltd., Xingtai, 054001, China
2 Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University), Jilin, 132012, China
* Corresponding Author: Cheng Yang. Email: email
(This article belongs to the Special Issue: New Energy and Energy Storage System)

Energy Engineering https://doi.org/10.32604/ee.2025.073028

Received 09 September 2025; Accepted 21 October 2025; Published online 28 November 2025

Abstract

The increasing proportion of power generated by new energy has meant that grid-forming energy storage has become a key method for improving power grid flexibility. However, the small disturbance stability problem has become an important challenge. The issue is that grid-forming energy storage is prone to low-frequency oscillation under strong grid conditions. Therefore, this study proposes a multi damping torque model to analyze the small signal stability of grid-forming energy storage converters. The impact of grid strength, operating conditions, and control parameters on the damping characteristics of the low-frequency oscillation by the system was quantitatively evaluated. The results revealed the mechanism underlying the low-frequency oscillation associated with grid-forming energy storage under strong grid conditions and key factors controlling the low-frequency oscillation. The results also provide theoretical guidance for the tuning of grid-forming energy storage control parameters. The accuracy of the multi damping torque model and theoretical analysis were verified using the electromagnetic simulation results.

Keywords

Multi-damping path; grid-forming energy storage; small signal stability; low-frequency oscillation

  • 114

    View

  • 55

    Download

  • 0

    Like

Related articles
Copyright© 2025 Tech Science Press
© 1997-2025 TSP (Henderson, USA) unless otherwise stated

Share Link