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Improved Impedance Model of Grid-Forming ESS for Interactive and Self-Stability Analysis

  • Yu Gu*
  • , Rongwu Zhu*
  • , Yake Gu
  • *Corresponding author for this work
  • Harbin Institute of Technology Shenzhen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Grid-forming energy storage system (ESS) has the similar characteristics with the conventional synchronous generator to support the electricity grids. The impedance-based stability criterion is a simple and effective method to study the interactive stability between the ESS interfaced power converters and the electricity grids, while the self-stability of the power converter is generally studied based on either the transfer function or state space model, resulting in the inconsistency of stability analysis between the interactive stability and self-stability. Hence, an improved impedance modeling approach, which can study the aforementioned two types of stability, is proposed in this paper for the grid-forming converters of ESS. The correctness and effectiveness of the improved impedance model are validated by the simulation results.

Original languageEnglish
Title of host publicationProceedings - 2024 9th Asia Conference on Power and Electrical Engineering, ACPEE 2024
EditorsTek-Tjing Lie, Mia Zhu, Guojie Li, Youbo Liu
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages705-709
Number of pages5
ISBN (Electronic)9798350309638
DOIs
StatePublished - 2024
Externally publishedYes
Event9th Asia Conference on Power and Electrical Engineering, ACPEE 2024 - Shanghai, China
Duration: 11 Apr 202413 Apr 2024

Publication series

NameProceedings - 2024 9th Asia Conference on Power and Electrical Engineering, ACPEE 2024

Conference

Conference9th Asia Conference on Power and Electrical Engineering, ACPEE 2024
Country/TerritoryChina
CityShanghai
Period11/04/2413/04/24

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Keywords

  • Improved impedance model
  • grid-forming converter
  • interactive stability
  • self-stability

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