For generators rated above 1 MVA, it is common to apply generator differential protection for stator phase faults. This form of unit protection allows discriminative detection of winding faults, with no intentional time delay, where a significant fault current arises. Circulating current differential protection operates on the principle that current entering and leaving a zoneGenerator Differential Protection
This article describes the main differences of characteristics between an inverter based generator and a synchronous generator.
