Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms
Abstract Incidents of sub‐synchronous oscillations (SSOs) reported in the Hami power network of western China indicate that the torsional dynamics of a synchronous generator (SG) can be excited by a grid‐connected wind farm and trigger torsional SSOs. The concept of open‐loop modal resonance (OLMR)...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-02-01
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| Series: | IET Renewable Power Generation |
| Subjects: | |
| Online Access: | https://doi.org/10.1049/rpg2.12617 |
| _version_ | 1828033810290180096 |
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| author | Siqi Bu Jiangfeng Zhang C. Y. Chung |
| author_facet | Siqi Bu Jiangfeng Zhang C. Y. Chung |
| author_sort | Siqi Bu |
| collection | DOAJ |
| description | Abstract Incidents of sub‐synchronous oscillations (SSOs) reported in the Hami power network of western China indicate that the torsional dynamics of a synchronous generator (SG) can be excited by a grid‐connected wind farm and trigger torsional SSOs. The concept of open‐loop modal resonance (OLMR) reveals the excitation mechanism from the standpoint of system modal condition. This paper proposes a novel damping torque analysis (DTA) for detecting and assessing the risk of OLMR exciting torsional SSOs in a complex power system with multiple grid‐connected wind farms. The proposed analysis is modal‐computational free and can also accurately identify the grid‐connected wind farm responsible for the excitation of the torsional SSOs. Moreover, the proposed DTA provides a physical insight into the OLMR to facilitate an understanding of the essential reasons that the OLMR may excite torsional SSOs. The effectiveness of the proposed DTA is demonstrated and evaluated in an example power system with multiple grid‐connected wind farms. |
| first_indexed | 2024-04-10T15:25:06Z |
| format | Article |
| id | doaj.art-b8951e19d61c48c1a510672d19df7904 |
| institution | Directory Open Access Journal |
| issn | 1752-1416 1752-1424 |
| language | English |
| last_indexed | 2024-04-10T15:25:06Z |
| publishDate | 2023-02-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Renewable Power Generation |
| spelling | doaj.art-b8951e19d61c48c1a510672d19df79042023-02-14T10:35:14ZengWileyIET Renewable Power Generation1752-14161752-14242023-02-0117360461610.1049/rpg2.12617Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farmsSiqi Bu0Jiangfeng Zhang1C. Y. Chung2Department of Electrical Engineering The Hong Kong Polytechnic University Kowloon Hong Kong S.A.R.Department of Electrical Engineering The Hong Kong Polytechnic University Kowloon Hong Kong S.A.R.Department of Electrical Engineering The Hong Kong Polytechnic University Kowloon Hong Kong S.A.R.Abstract Incidents of sub‐synchronous oscillations (SSOs) reported in the Hami power network of western China indicate that the torsional dynamics of a synchronous generator (SG) can be excited by a grid‐connected wind farm and trigger torsional SSOs. The concept of open‐loop modal resonance (OLMR) reveals the excitation mechanism from the standpoint of system modal condition. This paper proposes a novel damping torque analysis (DTA) for detecting and assessing the risk of OLMR exciting torsional SSOs in a complex power system with multiple grid‐connected wind farms. The proposed analysis is modal‐computational free and can also accurately identify the grid‐connected wind farm responsible for the excitation of the torsional SSOs. Moreover, the proposed DTA provides a physical insight into the OLMR to facilitate an understanding of the essential reasons that the OLMR may excite torsional SSOs. The effectiveness of the proposed DTA is demonstrated and evaluated in an example power system with multiple grid‐connected wind farms.https://doi.org/10.1049/rpg2.12617oscillationspower system dynamic stabilitysubsynchronous resonancesynchronous generatorswind power |
| spellingShingle | Siqi Bu Jiangfeng Zhang C. Y. Chung Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms IET Renewable Power Generation oscillations power system dynamic stability subsynchronous resonance synchronous generators wind power |
| title | Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms |
| title_full | Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms |
| title_fullStr | Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms |
| title_full_unstemmed | Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms |
| title_short | Damping torque analysis for open‐loop modal resonance as a cause of torsional sub‐synchronous oscillations excited by grid‐connected wind farms |
| title_sort | damping torque analysis for open loop modal resonance as a cause of torsional sub synchronous oscillations excited by grid connected wind farms |
| topic | oscillations power system dynamic stability subsynchronous resonance synchronous generators wind power |
| url | https://doi.org/10.1049/rpg2.12617 |
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