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Table 5 Protection results with different correlation coefficients

From: Pilot protection of hybrid MMC DC grid based on active detection

MethodsCorrelation coefficient (positive/negative)Fault sectionFault poleOperate or not (Y/N)
Spearman0.941/0.932externalpole-to-poleN
Pearson0.618/0.594externalpole-to-poleN
  1. From the simulation results, it can be seen that the Spearman correlation coefficient is more superior