Interactive Dynamic Characteristics of Angle Stability of Multi-Converters System

Ziqian Zhang; Robert Schürhuber; Katrin Friedl

doi:10.1109/EPE58302.2023.10149221

Interactive Dynamic Characteristics of Angle Stability of Multi-Converters System

Ziqian Zhang^*, Robert Schürhuber, Katrin Friedl

^*Corresponding author for this work

Institute of Electrical Power Systems (4320)

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Abstract

The investigation of the dynamic characteristics of multi-converter systems is usually based on detailed modelling of the converters. This requires detailed control-related information about the converters, which is not suitable for grid operators and third-party research institutions to perform practical investigations of multi-converter grids. This paper proposes a validation and operation-oriented investigation approach to construct a system dynamics matrix of a multi-converter system with information on the grid topology, grid impedance and converter's setpoints. In this paper, a three-converters system is modelled and the information of the stable equilibrium surfaces is investigated. According to the continuity of the stable equilibrium surfaces, the grid-forming converter has better robustness to the loss of synchronisation of the grid-following converter. On the other hand, the grid-following converter is not able to maintain stable operation in case of loss of synchronisation of the grid-forming converter.

Original language	English
Title of host publication	2023 23rd International Scientific Conference on Electric Power Engineering, EPE 2023
Editors	Lukas Radil, Michal Ptacek
Publisher	Institute of Electrical and Electronics Engineers
ISBN (Electronic)	9798350335934
DOIs	https://doi.org/10.1109/EPE58302.2023.10149221
Publication status	Published - 2023
Event	23rd International Scientific Conference on Electric Power Engineering: EPE 2023 - Brno, Czech Republic Duration: 24 May 2023 → 23 Jun 2023

Conference

Conference	23rd International Scientific Conference on Electric Power Engineering
Abbreviated title	EPE 2023
Country/Territory	Czech Republic
City	Brno
Period	24/05/23 → 23/06/23

Keywords

converters
current limiting
grid-following
grid-forming
interaction
synchronization

ASJC Scopus subject areas

Computer Networks and Communications
Energy Engineering and Power Technology
Nuclear Energy and Engineering
Renewable Energy, Sustainability and the Environment
Electrical and Electronic Engineering
Mechanical Engineering
Electronic, Optical and Magnetic Materials

UN SDGs

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

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10.1109/EPE58302.2023.10149221

Cite this

Interactive Dynamic Characteristics of Angle Stability of Multi-Converters System. / Zhang, Ziqian ; Schürhuber, Robert ; Friedl, Katrin.
2023 23rd International Scientific Conference on Electric Power Engineering, EPE 2023. ed. / Lukas Radil; Michal Ptacek. Institute of Electrical and Electronics Engineers, 2023.

Research output: Chapter in Book/Report/Conference proceeding › Conference paper › peer-review

Zhang, Z , Schürhuber, R & Friedl, K 2023, Interactive Dynamic Characteristics of Angle Stability of Multi-Converters System. in L Radil & M Ptacek (eds), 2023 23rd International Scientific Conference on Electric Power Engineering, EPE 2023. Institute of Electrical and Electronics Engineers, 23rd International Scientific Conference on Electric Power Engineering, Brno, Czech Republic, 24/05/23. https://doi.org/10.1109/EPE58302.2023.10149221

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abstract = "The investigation of the dynamic characteristics of multi-converter systems is usually based on detailed modelling of the converters. This requires detailed control-related information about the converters, which is not suitable for grid operators and third-party research institutions to perform practical investigations of multi-converter grids. This paper proposes a validation and operation-oriented investigation approach to construct a system dynamics matrix of a multi-converter system with information on the grid topology, grid impedance and converter's setpoints. In this paper, a three-converters system is modelled and the information of the stable equilibrium surfaces is investigated. According to the continuity of the stable equilibrium surfaces, the grid-forming converter has better robustness to the loss of synchronisation of the grid-following converter. On the other hand, the grid-following converter is not able to maintain stable operation in case of loss of synchronisation of the grid-forming converter.",

keywords = "converters, current limiting, grid-following, grid-forming, interaction, synchronization",

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AU - Friedl, Katrin

PY - 2023

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N2 - The investigation of the dynamic characteristics of multi-converter systems is usually based on detailed modelling of the converters. This requires detailed control-related information about the converters, which is not suitable for grid operators and third-party research institutions to perform practical investigations of multi-converter grids. This paper proposes a validation and operation-oriented investigation approach to construct a system dynamics matrix of a multi-converter system with information on the grid topology, grid impedance and converter's setpoints. In this paper, a three-converters system is modelled and the information of the stable equilibrium surfaces is investigated. According to the continuity of the stable equilibrium surfaces, the grid-forming converter has better robustness to the loss of synchronisation of the grid-following converter. On the other hand, the grid-following converter is not able to maintain stable operation in case of loss of synchronisation of the grid-forming converter.

AB - The investigation of the dynamic characteristics of multi-converter systems is usually based on detailed modelling of the converters. This requires detailed control-related information about the converters, which is not suitable for grid operators and third-party research institutions to perform practical investigations of multi-converter grids. This paper proposes a validation and operation-oriented investigation approach to construct a system dynamics matrix of a multi-converter system with information on the grid topology, grid impedance and converter's setpoints. In this paper, a three-converters system is modelled and the information of the stable equilibrium surfaces is investigated. According to the continuity of the stable equilibrium surfaces, the grid-forming converter has better robustness to the loss of synchronisation of the grid-following converter. On the other hand, the grid-following converter is not able to maintain stable operation in case of loss of synchronisation of the grid-forming converter.

KW - converters

KW - current limiting

KW - grid-following

KW - grid-forming

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ER -

Interactive Dynamic Characteristics of Angle Stability of Multi-Converters System

Abstract

Conference

Keywords

ASJC Scopus subject areas

UN SDGs

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