Abstract
As the number of high voltage (HVDC) installations is increasing, there is a growing need for interconnection to create more efficient grids. To tackle the main challenges in HVDC grids, a multiport DC-DC converter, often referred to as DC hub, is considered a solution. This paper provides a methodology for the clearing of AC faults within the DC hub and the protection of the system during a fault. A methodology is also presented for the safe connection or disconnection of additional ports from the DC hub without affecting the operation of the other ports. A design based on modular multilevel converters (MMC) is chosen due to their inherent advantages and its control operation is described. A DC hub was modelled in Matlab/Simulink and was tested in a case study including the interconnection of three DC lines in symmetric monopolar configuration, operating at different voltage levels.
Original language | English |
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Title of host publication | 2019 10th International Conference on Power Electronics and ECCE Asia (ICPE 2019 - ECCE Asia) |
Publisher | IEEE |
Pages | 1-8 |
Number of pages | 8 |
ISBN (Electronic) | 978-89-5708-313-0 |
ISBN (Print) | 978-1-7281-1612-9 |
Publication status | Published - 2019 |
Event | 10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia: 10th International Conference on Power Electronics - Busan, Korea, Republic of Duration: 27 May 2019 → 30 May 2019 Conference number: 10th |
Conference
Conference | 10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia |
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Country/Territory | Korea, Republic of |
City | Busan |
Period | 27/05/19 → 30/05/19 |
Keywords
- AC faults
- DC Hub
- DC-DC converter
- HVDC