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Comparison of Power Swing Characteristics and Efficacy Analysis of Impedance-Based Detections in Synchronous Generators and Grid-Following Systems

Name: Comparison of Power Swing Characteristics and Efficacy Analysis of Impedance-Based Detections in Synchronous Generators and Grid-Following Systems
Keywords: Grid-following control, PLL-synchronization, VSC-connected system, grid-following control, power swing detection, loss of synchronism

descriptionPublicationkeyboard_double_arrow_right Article 01 May 2025 Denmark Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Power Systems, volume 40, pages 2,545-2,556 (issn: 0885-8950, eissn: 1558-0679,

Authors: Yongxin Xiong; Heng Wu; Yifei Li; Xiongfei Wang;

doi: 10.1109/tpwrs.2024.3469235

Comparison of Power Swing Characteristics and Efficacy Analysis of Impedance-Based Detections in Synchronous Generators and Grid-Following Systems

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Abstract

This paper presents a theoretical comparison of power swing characteristics between conventional synchronous generator (SG)-based systems and grid-following-voltage source converter (GFL-VSC) systems. Unlike conventional SG-based systems where the swing dynamics are characterized by the change of physical angle between different power sources, the swing characteristics in GFL-VSC systems are influenced by the control dynamic of the VSC, and the loss of synchronization is characterized by the divergence of the output angle of the phase-locked loop, which is control-dependent. Building on these insights, this paper further explores the performance and efficacy of impedance-based swing-detecting schemes at GFL-VSC systems. To validate the correctness of the comprehensive analysis, different simulations are carried out using the PSCAD/EMTDC platform, both in single-machine and multi-machine systems.

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Denmark

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Aalborg University
Denmark
Aalborg University Library (AUB)
Denmark
Royal Institute of Technology
Sweden
Aalborg University Library (AUB)
Denmark
Aalborg University Library (AUB) Aalborg Universitet Research Portal
Denmark

Keywords

Grid-following control, PLL-synchronization, VSC-connected system, grid-following control, power swing detection, loss of synchronism

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