Table 5 Protection results with different correlation coefficients
From: Pilot protection of hybrid MMC DC grid based on active detection
Methods | Correlation coefficient (positive/negative) | Fault section | Fault pole | Operate or not (Y/N) |
|---|---|---|---|---|
Spearman | 0.941/0.932 | external | pole-to-pole | N |
Pearson | 0.618/0.594 | external | pole-to-pole | N |