In: Electrical Engineering
Diesel Generator A I MVA diesel three-phase generator is rated at
4.16 kV, 60 Hz, and connected as Y its neutral is kept floating. It
is directly tied to three loads, one consuming 50% of its capacity,
and each of the other two consuming 25% of its capacity. A
three-phase to ground fault could occur at any of the loads. Draw a
one-line diagram of this system, then describe what type of faults
could occur in the generator and diesel engine. Explain at least
three types of protection strategies that have to be implemented in
such a system, and show necessary fault current calculations.
Assume that any fault impedance you may need is 9.02 pu, and any
component impedance is 0.4 pu.