A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops
Abstract Virtual synchronous generator (VSG) has been widely studied owing to its inertia support to the grid. However, the stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops of VSG. Since inner loops are essential to...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2021-02-01
|
| Series: | IET Renewable Power Generation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rpg2.12034 |
| _version_ | 1828237631213797376 |
|---|---|
| author | Yang Peng Yue Wang Yonghui Liu Peng Yu Sirui Shu Wanjun Lei |
| author_facet | Yang Peng Yue Wang Yonghui Liu Peng Yu Sirui Shu Wanjun Lei |
| author_sort | Yang Peng |
| collection | DOAJ |
| description | Abstract Virtual synchronous generator (VSG) has been widely studied owing to its inertia support to the grid. However, the stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops of VSG. Since inner loops are essential to control output voltage and current accurately in practical engineering, this study focuses on stability analysis of the interconnection system of VSG and the grid by sequence impedance modelling of VSG with inner loops. The complete sequence impedance model for VSG with inner loops is built and compared with that of the VSG‐ignoring inner loops, and then the stability is analysed based on that. It shows that inner loops bring the risk of instability and oscillation for VSG, which was not predicted in previous studies. Then, the influence of each parameter of inner loops on the impedance and oscillation is analysed, showing that the oscillation can hardly be eliminated by tuning the parameters of inner loops. Therefore, corresponding virtual resistor with proper value is studied and adopted in VSG with inner loops to avoid oscillation. Finally, the correctness of theoretical analysis and the effectiveness of the adopted virtual resistance are verified by the hardware‐in‐the‐loop experiments. |
| first_indexed | 2024-04-12T20:50:07Z |
| format | Article |
| id | doaj.art-452359368400430daa014ba3d5af1320 |
| institution | Directory Open Access Journal |
| issn | 1752-1416 1752-1424 |
| language | English |
| last_indexed | 2024-04-12T20:50:07Z |
| publishDate | 2021-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj.art-452359368400430daa014ba3d5af13202022-12-22T03:17:08ZengWileyIET Renewable Power Generation1752-14161752-14242021-02-0115239740810.1049/rpg2.12034A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loopsYang Peng0Yue Wang1Yonghui Liu2Peng Yu3Sirui Shu4Wanjun Lei5State Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaState Key Laboratory of Electrical Insulation and Power Equipment Xi'an Jiaotong University Xi'an ChinaAbstract Virtual synchronous generator (VSG) has been widely studied owing to its inertia support to the grid. However, the stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops of VSG. Since inner loops are essential to control output voltage and current accurately in practical engineering, this study focuses on stability analysis of the interconnection system of VSG and the grid by sequence impedance modelling of VSG with inner loops. The complete sequence impedance model for VSG with inner loops is built and compared with that of the VSG‐ignoring inner loops, and then the stability is analysed based on that. It shows that inner loops bring the risk of instability and oscillation for VSG, which was not predicted in previous studies. Then, the influence of each parameter of inner loops on the impedance and oscillation is analysed, showing that the oscillation can hardly be eliminated by tuning the parameters of inner loops. Therefore, corresponding virtual resistor with proper value is studied and adopted in VSG with inner loops to avoid oscillation. Finally, the correctness of theoretical analysis and the effectiveness of the adopted virtual resistance are verified by the hardware‐in‐the‐loop experiments.https://doi.org/10.1049/rpg2.12034Synchronous machinesControl of electric power systemsDistributed power generationPower convertors and power supplies to apparatus |
| spellingShingle | Yang Peng Yue Wang Yonghui Liu Peng Yu Sirui Shu Wanjun Lei A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops IET Renewable Power Generation Synchronous machines Control of electric power systems Distributed power generation Power convertors and power supplies to apparatus |
| title | A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops |
| title_full | A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops |
| title_fullStr | A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops |
| title_full_unstemmed | A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops |
| title_short | A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops |
| title_sort | full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops |
| topic | Synchronous machines Control of electric power systems Distributed power generation Power convertors and power supplies to apparatus |
| url | https://doi.org/10.1049/rpg2.12034 |
| work_keys_str_mv | AT yangpeng afullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT yuewang afullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT yonghuiliu afullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT pengyu afullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT siruishu afullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT wanjunlei afullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT yangpeng fullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT yuewang fullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT yonghuiliu fullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT pengyu fullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT siruishu fullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops AT wanjunlei fullsequenceimpedancemodellingandstabilityanalysisofthevirtualsynchronousgeneratorwithinnerloops |