A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid
With the growth in continuous energy demand, high-voltage Multi-Terminal DC (MTDC) systems are technically and economically feasible to transmit bulk power and integrate additional energy sources. However, the high vulnerability of the MTDC systems to DC faults, especially pole-to-pole (P2P) faults,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Electronics |
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| Online Access: | https://www.mdpi.com/2079-9292/11/14/2127 |
| _version_ | 1797439791418048512 |
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| author | Mohammed Alharbi Semih Isik Faris E. Alfaris Abdulaziz Alkuhayli Subhashish Bhattacharya |
| author_facet | Mohammed Alharbi Semih Isik Faris E. Alfaris Abdulaziz Alkuhayli Subhashish Bhattacharya |
| author_sort | Mohammed Alharbi |
| collection | DOAJ |
| description | With the growth in continuous energy demand, high-voltage Multi-Terminal DC (MTDC) systems are technically and economically feasible to transmit bulk power and integrate additional energy sources. However, the high vulnerability of the MTDC systems to DC faults, especially pole-to-pole (P2P) faults, is technically challenging. The development of DC fault ride-through techniques such as DC circuit breakers is still challenging due to their high cost and complex operation. This paper presents the DC fault clearance and isolation method for an MMC-based MTDC grid without adopting the high-cost DC circuit breakers. Besides, a restoration sequence is proposed to re-energize the DC grid upon clearing the fault. An MMC-based four-terminal DC grid is implemented in a Control-Hardware-in-Loop (CHIL) environment based on Xilinx Virtex-7 FPGAs and Real-Time Digital Simulator (RTDS). The RTDS results show that the MTDC system satisfactorily rides through DC faults and can safely recover after DC faults. |
| first_indexed | 2024-03-09T11:59:14Z |
| format | Article |
| id | doaj.art-14a95e8bf6eb44cc9f01754700b2f5f5 |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-03-09T11:59:14Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-14a95e8bf6eb44cc9f01754700b2f5f52023-11-30T23:05:41ZengMDPI AGElectronics2079-92922022-07-011114212710.3390/electronics11142127A Fault Clearance and Restoration Approach for MMC-Based MTDC GridMohammed Alharbi0Semih Isik1Faris E. Alfaris2Abdulaziz Alkuhayli3Subhashish Bhattacharya4Department of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi ArabiaDepartment of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USADepartment of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi ArabiaDepartment of Electrical Engineering, College of Engineering, King Saud University, Riyadh 11421, Saudi ArabiaDepartment of Electrical and Computer Engineering, North Carolina State University, Raleigh, NC 27606, USAWith the growth in continuous energy demand, high-voltage Multi-Terminal DC (MTDC) systems are technically and economically feasible to transmit bulk power and integrate additional energy sources. However, the high vulnerability of the MTDC systems to DC faults, especially pole-to-pole (P2P) faults, is technically challenging. The development of DC fault ride-through techniques such as DC circuit breakers is still challenging due to their high cost and complex operation. This paper presents the DC fault clearance and isolation method for an MMC-based MTDC grid without adopting the high-cost DC circuit breakers. Besides, a restoration sequence is proposed to re-energize the DC grid upon clearing the fault. An MMC-based four-terminal DC grid is implemented in a Control-Hardware-in-Loop (CHIL) environment based on Xilinx Virtex-7 FPGAs and Real-Time Digital Simulator (RTDS). The RTDS results show that the MTDC system satisfactorily rides through DC faults and can safely recover after DC faults.https://www.mdpi.com/2079-9292/11/14/2127Modular Multilevel Converter (MMC)Multi-Terminal DC gridMTDCDC faultsprotection strategy |
| spellingShingle | Mohammed Alharbi Semih Isik Faris E. Alfaris Abdulaziz Alkuhayli Subhashish Bhattacharya A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid Electronics Modular Multilevel Converter (MMC) Multi-Terminal DC grid MTDC DC faults protection strategy |
| title | A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid |
| title_full | A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid |
| title_fullStr | A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid |
| title_full_unstemmed | A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid |
| title_short | A Fault Clearance and Restoration Approach for MMC-Based MTDC Grid |
| title_sort | fault clearance and restoration approach for mmc based mtdc grid |
| topic | Modular Multilevel Converter (MMC) Multi-Terminal DC grid MTDC DC faults protection strategy |
| url | https://www.mdpi.com/2079-9292/11/14/2127 |
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