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Table 1 Phase difference change information of measured admittances of X terminal before and after the fault

From: New protection scheme for internal fault of multi-microgrid

Direction Forward-Forward Situation (1) Reverse-Reverse Situation (2) Forward-Reverse Situation (3) Reverse-Forward Situation (4)
Measured Admittance
Phase Difference −90° − 90° −90° − 90° 90°–270° 90°–270°