Methods and systems for ground fault detection in a power distribution system

The present invention relates to methods and systems for ground fault detection in a power distribution system. An example method of operating a solidly grounded, multi-source, multi-phase power distribution system having coupled neutral conductors is disclosed. The power distribution system includes a bus, a plurality of source protection devices coupled to the bus, and a plurality of feeder protection devices coupled to the bus. The method includes receiving, for each source protection device of the plurality of source protection devices, data indicative of detected source phase currents associated with the source protection device. Data indicative of detected feeder neutral currents and detected feeder phase currents associated with the feeder protection device are received for each feeder protection device of the plurality of feeder protection devices. A net source ground fault current associated with the plurality of source protection devices is determined based on the received data indicative of source