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| Content Provider | IET Digital Library |
|---|---|
| Author | Liu, Wei Lu, Zongxiang Wang, Xiongfei Xie, Xiaorong |
| Abstract | Recently, subsynchronous interaction (SSI), a type of stability issue caused by interactions between power electronic converters and weak grids, has attracted great concerns. Many efforts have been made to use impedance/admittance-based methods for its modelling and analysis. However, most impedance/admittance models (IM/AMs) are aimed at higher-frequency dynamics and do not reflect the coupling effects between sub- and super-synchronous frequencies or the outer control loops, which, as indicated in this work, have significant impacts on the characteristics of SSI. To fill the gap, this study derives the explicit frequency-coupled AM for a typical grid-tied voltage-sourced converter by taking the coupling effects and outer-loop controls into full account and further investigates their impacts on the subsynchronous stability. The model itself and its effectiveness in predicting the stability of SSI have been validated with detailed electromagnetic transient simulations. |
| Starting Page | 285 |
| Ending Page | 295 |
| Page Count | 11 |
| ISSN | 17521416 |
| Volume Number | 13 |
| e-ISSN | 17521424 |
| Issue Number | Issue 2, Feb (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/13/2 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5462 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2018-10-26 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Admittance-based Method Coupling Effects Electromagnetic Transient Simulations Explicit Frequency-coupled AM Frequency-coupled Admittance Modelling Grid-connected Voltage Source Converter Higher-frequency Dynamics Impedance-based Method Impedance/admittance Model Modelling Analysis Outer Control Loops Outer-loop Control Power Converter Power Electronic Converter Power Grid Power Supplies to Apparatus Power System Control Power System Stability SSI Stability Evaluation Stability Issue Subsynchronous Interaction Subsynchronous Stability Super-synchronous Frequency Typical Grid-tied Voltage-sourced Converter Voltage-source Converter Weak Grid |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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