| Abstract: |
| The multi-terminal VSC-HVDC grid is believed to be widely applied in the future power system. The dc line
protection is the key technique for operation security and power supply reliability of the dc grid. In this paper, the
single-ended protections, namely, the traveling-wave based protection and transient-variable based protection, as
well as the pilot protections, mainly including the directional pilot protection and current differential protection, are
discussed in detail. With the analyzed protections, the effective main and back-up protection strategy can be
configured for the dc line in multi-terminal VSC-HVDC grid. |
| Key words: Multi-terminal VSC-HVDC grid, Traveling-wave based protection, Transient-variable based protection,Directional pilot protection, Current differential protection |
| DOI：10.1186/s41601-019-0136-2 |
|
| Fund: |
|
