Table 1 Protection results
From: Pilot protection of hybrid MMC DC grid based on active detection
Fault position | Correlation coefficient (Positive/Negative) | Fault section | Fault pole | Operate or not(Y/N) |
|---|---|---|---|---|
f1(pole-to-ground) | − 0.881/0.934 | internal | pole-to-ground | Y |
f1(pole-to-pole) | −0.872/− 0.921 | internal | pole-to-pole | Y |
f2(pole-to-pole) | 0.976/0.963 | external | / | N |
f3(pole-to-pole) | 0.977/0.954 | external | / | N |