Frequency Regulation of VSC-MTDC System with Offshore Wind Farms
Frequency regulation of voltage source converter-based multi-terminal high-voltage direct current (VSC-MTDC) system with offshore wind farms enhances the frequency stability by compensating the power for a disturbed AC system. However, it is difficult to reasonably allocate frequency-regulation reso...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
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| Series: | Journal of Modern Power Systems and Clean Energy |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10130020/ |
| _version_ | 1797342296870486016 |
|---|---|
| author | Haoyu Liu Chongru Liu |
| author_facet | Haoyu Liu Chongru Liu |
| author_sort | Haoyu Liu |
| collection | DOAJ |
| description | Frequency regulation of voltage source converter-based multi-terminal high-voltage direct current (VSC-MTDC) system with offshore wind farms enhances the frequency stability by compensating the power for a disturbed AC system. However, it is difficult to reasonably allocate frequency-regulation resources due to a lack of coordination mechanisms between wind farms and the MTDC system. Moreover, it is difficult for the frequency control of the wind farms to manage changes in wind speed; and the risk of wind-turbine stalls is high. Thus, based on the kinetic energy of wind turbines and the power margin of the converters, the frequency-regulation capability of wind turbines is evaluated, and a dynamic frequency-support scheme considering the real-time frequency-support capability of the wind turbines and system frequency evolution is proposed to improve the frequency-support performance. A power adaptation technique at variable wind speeds is developed; the active power in the frequency-support stage and restoration stage is switched according to the wind speed. A hierarchical zoning frequency-regulation scheme is designed to use the frequency-regulation resources of different links in the MTDC system with wind farms. The simulation results show that the novel frequency-regulation strategy maintains frequency stability with wind-speed changes and avoids multiple frequency dips. |
| first_indexed | 2024-03-08T10:31:14Z |
| format | Article |
| id | doaj.art-3b873eb2b1e841b5924a213fcc96b5fb |
| institution | Directory Open Access Journal |
| issn | 2196-5420 |
| language | English |
| last_indexed | 2024-03-08T10:31:14Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | Journal of Modern Power Systems and Clean Energy |
| spelling | doaj.art-3b873eb2b1e841b5924a213fcc96b5fb2024-01-27T00:03:15ZengIEEEJournal of Modern Power Systems and Clean Energy2196-54202024-01-0112127528610.35833/MPCE.2023.00000110130020Frequency Regulation of VSC-MTDC System with Offshore Wind FarmsHaoyu Liu0Chongru Liu1North China Electric Power University,Beijing,China,102206North China Electric Power University,Beijing,China,102206Frequency regulation of voltage source converter-based multi-terminal high-voltage direct current (VSC-MTDC) system with offshore wind farms enhances the frequency stability by compensating the power for a disturbed AC system. However, it is difficult to reasonably allocate frequency-regulation resources due to a lack of coordination mechanisms between wind farms and the MTDC system. Moreover, it is difficult for the frequency control of the wind farms to manage changes in wind speed; and the risk of wind-turbine stalls is high. Thus, based on the kinetic energy of wind turbines and the power margin of the converters, the frequency-regulation capability of wind turbines is evaluated, and a dynamic frequency-support scheme considering the real-time frequency-support capability of the wind turbines and system frequency evolution is proposed to improve the frequency-support performance. A power adaptation technique at variable wind speeds is developed; the active power in the frequency-support stage and restoration stage is switched according to the wind speed. A hierarchical zoning frequency-regulation scheme is designed to use the frequency-regulation resources of different links in the MTDC system with wind farms. The simulation results show that the novel frequency-regulation strategy maintains frequency stability with wind-speed changes and avoids multiple frequency dips.https://ieeexplore.ieee.org/document/10130020/Wind generationvoltage source converter-based multi-terminal high-voltage direct current (VSC-MTDC)frequency regulationcooperative controladaptive controlvariable wind speed |
| spellingShingle | Haoyu Liu Chongru Liu Frequency Regulation of VSC-MTDC System with Offshore Wind Farms Journal of Modern Power Systems and Clean Energy Wind generation voltage source converter-based multi-terminal high-voltage direct current (VSC-MTDC) frequency regulation cooperative control adaptive control variable wind speed |
| title | Frequency Regulation of VSC-MTDC System with Offshore Wind Farms |
| title_full | Frequency Regulation of VSC-MTDC System with Offshore Wind Farms |
| title_fullStr | Frequency Regulation of VSC-MTDC System with Offshore Wind Farms |
| title_full_unstemmed | Frequency Regulation of VSC-MTDC System with Offshore Wind Farms |
| title_short | Frequency Regulation of VSC-MTDC System with Offshore Wind Farms |
| title_sort | frequency regulation of vsc mtdc system with offshore wind farms |
| topic | Wind generation voltage source converter-based multi-terminal high-voltage direct current (VSC-MTDC) frequency regulation cooperative control adaptive control variable wind speed |
| url | https://ieeexplore.ieee.org/document/10130020/ |
| work_keys_str_mv | AT haoyuliu frequencyregulationofvscmtdcsystemwithoffshorewindfarms AT chongruliu frequencyregulationofvscmtdcsystemwithoffshorewindfarms |