An Efficient Reduced-Order Model for Studying Synchronization Stability of Grid-Following Converters during Grid Faults

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Renewable energy sources interfaced with the grid through power-electronic converters may lose stability and capability to perform as desired when exposed to severe grid faults. As a result of this, transient stability analysis and assessment are particularly important for power system studies. Usually, synchronization stability and transient stability analysis are performed by simulation studies containing a large amount of details, which makes this process highly time-consuming for large-scale systems. To circumvent this issue, a nonlinear second-order model is developed to capture the essential effects of the synchronization process of grid-tied converters during faults. Due to this low-order model, the stability assessment can be approached using phase-plane analysis with a low computational burden - more than 4000 times faster than the full-order switching model. The simplified model is verified against a detailed switching model and laboratory setup of the entire converter system indicating a high accuracy (>96%). Accordingly, the simplified reduced-order model can be used for accurate transient stability studies when a low availability of computational power is present, if large-scale systems are considered, or for detailed uncertainty and sensitivity analysis.
OriginalsprogEngelsk
TitelProceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
Antal sider7
ForlagIEEE Press
Publikationsdatojun. 2019
DOI
StatusUdgivet - jun. 2019
Begivenhed2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) - Toronto, Canada
Varighed: 17 jun. 201920 jun. 2019

Konference

Konference2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)
LandCanada
ByToronto
Periode17/06/201920/06/2019

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Synchronization
Large scale systems
Uncertainty analysis
Power electronics
Sensitivity analysis
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title = "An Efficient Reduced-Order Model for Studying Synchronization Stability of Grid-Following Converters during Grid Faults",
abstract = "Renewable energy sources interfaced with the grid through power-electronic converters may lose stability and capability to perform as desired when exposed to severe grid faults. As a result of this, transient stability analysis and assessment are particularly important for power system studies. Usually, synchronization stability and transient stability analysis are performed by simulation studies containing a large amount of details, which makes this process highly time-consuming for large-scale systems. To circumvent this issue, a nonlinear second-order model is developed to capture the essential effects of the synchronization process of grid-tied converters during faults. Due to this low-order model, the stability assessment can be approached using phase-plane analysis with a low computational burden - more than 4000 times faster than the full-order switching model. The simplified model is verified against a detailed switching model and laboratory setup of the entire converter system indicating a high accuracy (>96{\%}). Accordingly, the simplified reduced-order model can be used for accurate transient stability studies when a low availability of computational power is present, if large-scale systems are considered, or for detailed uncertainty and sensitivity analysis.",
keywords = "Grid fault, Transient Stability, Reduced-order model, Grid-connected converters",
author = "Taul, {Mads Graungaard} and Xiongfei Wang and Pooya Davari and Frede Blaabjerg",
year = "2019",
month = "6",
doi = "10.1109/COMPEL.2019.8769676",
language = "English",
booktitle = "Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)",
publisher = "IEEE Press",

}

Taul, MG, Wang, X, Davari, P & Blaabjerg, F 2019, An Efficient Reduced-Order Model for Studying Synchronization Stability of Grid-Following Converters during Grid Faults. i Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE Press, Toronto, Canada, 17/06/2019. https://doi.org/10.1109/COMPEL.2019.8769676

An Efficient Reduced-Order Model for Studying Synchronization Stability of Grid-Following Converters during Grid Faults. / Taul, Mads Graungaard; Wang, Xiongfei; Davari, Pooya; Blaabjerg, Frede.

Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL). IEEE Press, 2019.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

TY - GEN

T1 - An Efficient Reduced-Order Model for Studying Synchronization Stability of Grid-Following Converters during Grid Faults

AU - Taul, Mads Graungaard

AU - Wang, Xiongfei

AU - Davari, Pooya

AU - Blaabjerg, Frede

PY - 2019/6

Y1 - 2019/6

N2 - Renewable energy sources interfaced with the grid through power-electronic converters may lose stability and capability to perform as desired when exposed to severe grid faults. As a result of this, transient stability analysis and assessment are particularly important for power system studies. Usually, synchronization stability and transient stability analysis are performed by simulation studies containing a large amount of details, which makes this process highly time-consuming for large-scale systems. To circumvent this issue, a nonlinear second-order model is developed to capture the essential effects of the synchronization process of grid-tied converters during faults. Due to this low-order model, the stability assessment can be approached using phase-plane analysis with a low computational burden - more than 4000 times faster than the full-order switching model. The simplified model is verified against a detailed switching model and laboratory setup of the entire converter system indicating a high accuracy (>96%). Accordingly, the simplified reduced-order model can be used for accurate transient stability studies when a low availability of computational power is present, if large-scale systems are considered, or for detailed uncertainty and sensitivity analysis.

AB - Renewable energy sources interfaced with the grid through power-electronic converters may lose stability and capability to perform as desired when exposed to severe grid faults. As a result of this, transient stability analysis and assessment are particularly important for power system studies. Usually, synchronization stability and transient stability analysis are performed by simulation studies containing a large amount of details, which makes this process highly time-consuming for large-scale systems. To circumvent this issue, a nonlinear second-order model is developed to capture the essential effects of the synchronization process of grid-tied converters during faults. Due to this low-order model, the stability assessment can be approached using phase-plane analysis with a low computational burden - more than 4000 times faster than the full-order switching model. The simplified model is verified against a detailed switching model and laboratory setup of the entire converter system indicating a high accuracy (>96%). Accordingly, the simplified reduced-order model can be used for accurate transient stability studies when a low availability of computational power is present, if large-scale systems are considered, or for detailed uncertainty and sensitivity analysis.

KW - Grid fault

KW - Transient Stability

KW - Reduced-order model

KW - Grid-connected converters

U2 - 10.1109/COMPEL.2019.8769676

DO - 10.1109/COMPEL.2019.8769676

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BT - Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL)

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