A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters
The hybrid high-voltage direct current (HVDC) transmission system with cascaded MMC converters has become a promising alternative for possessing the technical merits of both line-commuted converter (LCC) and voltage source converter (VSC), resulting in favorable characteristics and potential control...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/12/23/4799 |
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| author | Lei Liu Xiaopeng Li Qin Jiang Yufei Teng Mingju Chen Yongfei Wang Xueyang Zeng Yiping Luo Pengyu Pan |
| author_facet | Lei Liu Xiaopeng Li Qin Jiang Yufei Teng Mingju Chen Yongfei Wang Xueyang Zeng Yiping Luo Pengyu Pan |
| author_sort | Lei Liu |
| collection | DOAJ |
| description | The hybrid high-voltage direct current (HVDC) transmission system with cascaded MMC converters has become a promising alternative for possessing the technical merits of both line-commuted converter (LCC) and voltage source converter (VSC), resulting in favorable characteristics and potential control of good prospect. This paper pays heightened attention to the feasible power and DC voltage control modes of a hybrid HVDC system; characteristics of master–slave control show higher flexibility than the LCC-VSC HVDC system, which demonstrates that the exceptional potential can serve to stability support the AC power grids. To optimize the control effect, besides damping level to attenuate power oscillations, the robustness suitable for various faults is also considered to obtain a multi-objective control problem. A detailed solution is proceeding using the TLS-ESPRIT identification algorithm and <i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> hybrid robust control theory. This motivates multi-terminal controllers in the LCC rectifier and MMC inverters, which immensely improve the stability of both sending and receiving girds at the same time. According to the parameters of the actual hybrid HVDC project, the simulation model is established in PSCAD v4.6.2 software, and proposed control methods have been verified to satisfy damping objectives and perform well in multiple operating scenarios. |
| first_indexed | 2024-03-09T01:53:23Z |
| format | Article |
| id | doaj.art-ee867b6ff56d44e998790a87cb975b93 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T01:53:23Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-ee867b6ff56d44e998790a87cb975b932023-12-08T15:14:03ZengMDPI AGElectronics2079-92922023-11-011223479910.3390/electronics12234799A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC ConvertersLei Liu0Xiaopeng Li1Qin Jiang2Yufei Teng3Mingju Chen4Yongfei Wang5Xueyang Zeng6Yiping Luo7Pengyu Pan8State Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaSichuan Key Laboratory of Artificial Intelligence, Sichuan University of Science & Engineering, Yibin 644000, ChinaCollege of Electrical Engineering, Sichuan University, Chengdu 610065, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaState Grid Sichuan Electrical Power Research Institute, Chengdu 610041, ChinaThe hybrid high-voltage direct current (HVDC) transmission system with cascaded MMC converters has become a promising alternative for possessing the technical merits of both line-commuted converter (LCC) and voltage source converter (VSC), resulting in favorable characteristics and potential control of good prospect. This paper pays heightened attention to the feasible power and DC voltage control modes of a hybrid HVDC system; characteristics of master–slave control show higher flexibility than the LCC-VSC HVDC system, which demonstrates that the exceptional potential can serve to stability support the AC power grids. To optimize the control effect, besides damping level to attenuate power oscillations, the robustness suitable for various faults is also considered to obtain a multi-objective control problem. A detailed solution is proceeding using the TLS-ESPRIT identification algorithm and <i>H</i><sub>2</sub>/<i>H</i><sub>∞</sub> hybrid robust control theory. This motivates multi-terminal controllers in the LCC rectifier and MMC inverters, which immensely improve the stability of both sending and receiving girds at the same time. According to the parameters of the actual hybrid HVDC project, the simulation model is established in PSCAD v4.6.2 software, and proposed control methods have been verified to satisfy damping objectives and perform well in multiple operating scenarios.https://www.mdpi.com/2079-9292/12/23/4799hybrid HVDCmaster–slave controlpower oscillationrobust controldamping control |
| spellingShingle | Lei Liu Xiaopeng Li Qin Jiang Yufei Teng Mingju Chen Yongfei Wang Xueyang Zeng Yiping Luo Pengyu Pan A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters Electronics hybrid HVDC master–slave control power oscillation robust control damping control |
| title | A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters |
| title_full | A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters |
| title_fullStr | A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters |
| title_full_unstemmed | A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters |
| title_short | A Multi-Terminal Control Method for AC Grids Based on a Hybrid High-Voltage Direct Current with Cascaded MMC Converters |
| title_sort | multi terminal control method for ac grids based on a hybrid high voltage direct current with cascaded mmc converters |
| topic | hybrid HVDC master–slave control power oscillation robust control damping control |
| url | https://www.mdpi.com/2079-9292/12/23/4799 |
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