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Shipboard Electrical Power Systems
book

Shipboard Electrical Power Systems

by Mukund R. Patel
December 2011
Intermediate to advanced content levelIntermediate to advanced
370 pages
12h 24m
English
CRC Press
Content preview from Shipboard Electrical Power Systems
82 Shipboard Electrical Power Systems
E x V P
f
= + = = =6351 1575 2 7089 7 089
6 351
2 2
( ) .
.
max
kV,and
×
77 089
2
22 51
.
.= MW
Power delivered by generator, P =
1
/
3
× 30 MVA × 1.0 pf = 10 MW/phase
The power angle is then derived from Equation (4.5):
P
gen
= 10 = 22.51 sinδ, which gives δ = 26.4°
Example 4.4
A 3-phase, Y-connected synchronous generator is rated 10 MVA, 11 kV. Its
resistance is negligible, and the synchronous reactance is 1.5 Ω per phase.
Determine the generator voltage E
g
when delivering rated MVA at 0.85 power
factor lagging.
SOLUTION
E
g
is an alternative symbol used in some books and national standards for the
field excitation
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Publisher Resources

ISBN: 9781439828175