Am working on MV Scheme which involves 10 3750MVA 11kV DG sets. The sets will operate with Utility when mains return fora 15sec period.
FOR limiting generator earth fault currents am lookinag at two options
Option 1
Each Generator has its own NER +NEC controlled by GEN Controller
Option 1
A common NET +NER connected on the GEN Bus
I need to size the
NET + NER
Vector Group of NET
Neutral Current
Fault current in neutral/duration
Krishnan S