Abstract
This paper proposes a ring dc node configuration for more reliable multi-terminal dc grid fault protection. The proposed ring node is tolerant to the loss of one dc circuit breaker. It results in reduced steady state current flow in node branches relative to a conventional star node connection. This reduces on-state losses of solid-state circuit breakers, as well as any dc-dc converters to be used to administer dc fault blocking in addition to voltage matching. The short circuit breaking capacity of each utilized circuit breaker is also reduced since current stresses are distributed among dc breakers within the ring node. The proposed node configurations are of importance for medium and high voltage dc grids interfacing renewable sources (for example, offshore wind) to the onshore ac grid.
Original language | English |
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Title of host publication | 2015 International Conference on Renewable Energy Research and Applications, ICRERA 2015 |
Place of Publication | Palmero |
Publisher | IEEE |
Pages | 1411-1415 |
Number of pages | 5 |
ISBN (Electronic) | 9781479999828 |
ISBN (Print) | 9781479999828 |
DOIs | |
Publication status | Published - 2015 |
Event | 4th International Conference on Renewable Energy Research and Applications - Palmero, Italy Duration: 22 Nov 2015 → 25 Nov 2015 Conference number: 4 https://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=7405753 |
Conference
Conference | 4th International Conference on Renewable Energy Research and Applications |
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Abbreviated title | ICRERA |
Country/Territory | Italy |
City | Palmero |
Period | 22/11/15 → 25/11/15 |
Internet address |
Keywords
- DC-DC power convertors
- HVDC power convertors
- circuit breakers
- power grids
- power system faults
- power system protection
- power system reliability
- DC fault blocking
- DC-DC converters
- multiterminal DC grid fault protection
- multiterminal HVDC networks
- ring DC node
- solid-state circuit breakers
- steady state current flow
- voltage matching
- Electron traps
- Europe
- HVDC transmission
- Matched filters
- Wind power generation
- HVdc
- dc-dc Converter
- multiterminal dc grid
- offshore wind power