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Table 1 Protection results

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

Fault positionCorrelation coefficient (Positive/Negative)Fault sectionFault poleOperate or not(Y/N)
f1(pole-to-ground)− 0.881/0.934internalpole-to-groundY
f1(pole-to-pole)−0.872/− 0.921internalpole-to-poleY
f2(pole-to-pole)0.976/0.963external/N
f3(pole-to-pole)0.977/0.954external/N