Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC
Voltage source converter based high voltage DC system (VSC-HVDC) has become a very promising solution to integrate offshore wind farm. However, the equivalent inertia of the modern power system with large renewable energy integration becomes small, which will arouse some frequency stability problems...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/15/17/6363 |
| _version_ | 1797495542718136320 |
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| author | Rui Zeng Yizhen Wang |
| author_facet | Rui Zeng Yizhen Wang |
| author_sort | Rui Zeng |
| collection | DOAJ |
| description | Voltage source converter based high voltage DC system (VSC-HVDC) has become a very promising solution to integrate offshore wind farm. However, the equivalent inertia of the modern power system with large renewable energy integration becomes small, which will arouse some frequency stability problems. To tackle this problem, this paper proposes an improved frequency regulation strategy for VSC-HVDC integrated offshore wind farm. Firstly, in the frequency decrease stage, the rotor kinetic energy of wind turbines (WTs) is used to suppress the decrease of the frequency, and the control parameters are determined to make full use of the mechanical power and rotor kinetic energy of WTs, the frequency nadir is improved. Secondly, in the rotor speed recovery stage, the DC capacitors of VSC-HVDC are used to release power to compensate the deficiency value of wind farm output power and avoid the secondary frequency drop (SFD) problem. Lastly, the simulation is conducted in PSCAD/EMTDC to validate the effectiveness of the proposed coordinated frequency control strategy. |
| first_indexed | 2024-03-10T01:50:45Z |
| format | Article |
| id | doaj.art-29dcbcc2d9734d78bec7d9db74c7c522 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T01:50:45Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-29dcbcc2d9734d78bec7d9db74c7c5222023-11-23T13:04:54ZengMDPI AGEnergies1996-10732022-08-011517636310.3390/en15176363Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDCRui Zeng0Yizhen Wang1Key Laboratory of Smart Grid, Ministry of Education, Tianjin University, Tianjin 300072, ChinaKey Laboratory of Smart Grid, Ministry of Education, Tianjin University, Tianjin 300072, ChinaVoltage source converter based high voltage DC system (VSC-HVDC) has become a very promising solution to integrate offshore wind farm. However, the equivalent inertia of the modern power system with large renewable energy integration becomes small, which will arouse some frequency stability problems. To tackle this problem, this paper proposes an improved frequency regulation strategy for VSC-HVDC integrated offshore wind farm. Firstly, in the frequency decrease stage, the rotor kinetic energy of wind turbines (WTs) is used to suppress the decrease of the frequency, and the control parameters are determined to make full use of the mechanical power and rotor kinetic energy of WTs, the frequency nadir is improved. Secondly, in the rotor speed recovery stage, the DC capacitors of VSC-HVDC are used to release power to compensate the deficiency value of wind farm output power and avoid the secondary frequency drop (SFD) problem. Lastly, the simulation is conducted in PSCAD/EMTDC to validate the effectiveness of the proposed coordinated frequency control strategy.https://www.mdpi.com/1996-1073/15/17/6363offshore wind farmVSC-HVDCkinetic energyDC capacitorfrequency regulation |
| spellingShingle | Rui Zeng Yizhen Wang Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC Energies offshore wind farm VSC-HVDC kinetic energy DC capacitor frequency regulation |
| title | Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC |
| title_full | Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC |
| title_fullStr | Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC |
| title_full_unstemmed | Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC |
| title_short | Improved Frequency Control Strategy for Offshore Wind Farm Integration via VSC-HVDC |
| title_sort | improved frequency control strategy for offshore wind farm integration via vsc hvdc |
| topic | offshore wind farm VSC-HVDC kinetic energy DC capacitor frequency regulation |
| url | https://www.mdpi.com/1996-1073/15/17/6363 |
| work_keys_str_mv | AT ruizeng improvedfrequencycontrolstrategyforoffshorewindfarmintegrationviavschvdc AT yizhenwang improvedfrequencycontrolstrategyforoffshorewindfarmintegrationviavschvdc |