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| Content Provider | IET Digital Library |
|---|---|
| Author | Jing, Yiran Li, Rui Xu, Lie Wang, Yi |
| Abstract | Connecting large offshore wind farms using high-voltage direct current (HVDC) transmission systems based on the modular multilevel converter (MMC), the offshore alternating current (AC) voltage and frequency are regulated by the offshore MMC station and are important for the stable wind power generation and transmission. This study proposes an enhanced AC voltage and frequency control strategy of the offshore MMC for wind farm integration, where an additional frequency loop is used to improve its AC voltage and frequency controllability. A fault current injection control is also proposed, where the offshore MMC station actively provides fault currents during an offshore AC fault to enable overcurrent protection for the network. To ride-through onshore AC faults, a direct current (DC) voltage-dependent AC voltage controller is introduced to actively reduce the offshore AC voltage during an onshore AC fault to alleviate the DC overvoltage of the HVDC system. Simulation results in normal operation and during offshore and onshore faults confirm the feasibility of the proposed control scheme. |
| Starting Page | 1771 |
| Ending Page | 1777 |
| Page Count | 7 |
| ISSN | 17521416 |
| Volume Number | 12 |
| e-ISSN | 17521424 |
| Issue Number | Issue 15, Nov (2018) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-rpg/12/15 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2018.5391 |
| Journal | IET Renewable Power Generation |
| Publisher Date | 2018-08-01 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Additional Frequency Loop Control of Electric Power System D.C. Transmission Direct Current Voltage-dependent AC Voltage Controller Fault Current Fault Current Injection Control Frequency Control Frequency Control Strategy Frequency Controllability High-voltage Direct Current Transmission System HVDC Power Converter HVDC Power Transmission Offshore AC Fault Offshore AC Voltage Offshore Fault Offshore Installations Offshore MMC Station Offshore Wind Farm Onshore AC Fault Onshore Fault Overcurrent Protection Power Converter Power Generation Control Power Generation Fault Power Grid Power Supplies to Apparatus Stable Wind Power Generation Voltage Control Wind Farm Connection Wind Farm Integration Wind Power Plant |
| Content Type | Text |
| Resource Type | Article |
| Subject | Renewable Energy, Sustainability and the Environment |
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