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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.
Original language | English |
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Title of host publication | Proceedings of 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) |
Number of pages | 7 |
Publisher | IEEE Press |
Publication date | Jun 2019 |
ISBN (Electronic) | 9781728118420 |
DOIs | |
Publication status | Published - Jun 2019 |
Event | 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) - Toronto, Canada Duration: 17 Jun 2019 → 20 Jun 2019 |
Conference
Conference | 2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL) |
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Country/Territory | Canada |
City | Toronto |
Period | 17/06/2019 → 20/06/2019 |
Series | IEEE Workshop on Control and Modeling for Power Electronics (COMPEL) |
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ISSN | 1093-5142 |
Keywords
- Grid fault
- Transient Stability
- Reduced-order model
- Grid-connected converters
Fingerprint
Dive into the research topics of 'An Efficient Reduced-Order Model for Studying Synchronization Stability of Grid-Following Converters during Grid Faults'. Together they form a unique fingerprint.Projects
- 2 Finished
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Synchronization Stability of Grid-Connected Converters under Grid Faults
Taul, M. G., Blaabjerg, F., Wang, X. & Davari, P.
01/09/2017 → 11/08/2020
Project: PhD Project
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REPEPS: REliable Power Electronic based Power System
Blaabjerg, F., Iannuzzo, F., Davari, P., Wang, H., Wang, X. & Yang, Y.
01/08/2017 → 01/12/2023
Project: Research
Research output
- 36 Citations
- 1 PhD thesis
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Synchronization Stability of Grid-Connected Converters under Grid Faults
Taul, M. G., 2020, Aalborg Universitetsforlag. 101 p.Research output: PhD thesis
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