Coordinated operation control on low DC voltage of HVDC integrating wind farms
| Autor: | Qingzhi Zhang, Chenggong Zhao, Chuan Du |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
wind power plants
power grids HVDC power convertors HVDC power transmission wind turbines coordinated operation control low DC voltage HVDC integrating wind farms HVDC transmission technology MMC-HVDC conventional control methods wind power integration system direct-drive wind farm independent control wind turbine cut-off DC voltage drops constant AC voltage wind power integration point control strategy Engineering (General). Civil engineering (General) TA1-2040 |
| Zdroj: | The Journal of Engineering (2019) |
| Druh dokumentu: | article |
| ISSN: | 2051-3305 |
| DOI: | 10.1049/joe.2018.8567 |
| Popis: | In recent years, with the development of high voltage direct current (HVDC) transmission technology, wind power integration with modular multiple converter-HVDC (MMC-HVDC) has been widely researched and applied. However, the conventional control methods on wind power integration cannot match the flexibility needing of loads. In this paper, a wind power integration system with permanent magnet direct-drive wind farm and full-bridge MMC is proposed. It has the characteristics of independent control of AC and DC current, which can realise the stable operation of the system under low DC voltage, so that to effectively avoid the accident of the wind turbine cut-off caused by the load reduce. When the DC voltage drops, the system can maintain a constant AC voltage at the wind power integration point, so that the wind farm can operate normally. Finally, the simulation results in PSCAD/EMTDC show that the proposed system and its control strategy are correct. |
| Databáze: | Directory of Open Access Journals |
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