Ηλεκτρικά δίκτυα πλοίων
Jan 10, 2016
-
, .. (440V, 3-phase / 380V, 3-phase) (emergency distribution system) ( )
. &
- ,
( ), (3.3 kV, 6.6 kV 11 kV) 220V ( )
(HV/LV) [D.T. Hall, Practical marine electrical knowledge , Witherby Seamanship Ltd 1999]
-
(1/2) ( ) (.. , ..) -
. &
440V ( ) 600/1000V (600V / 1000V ) :
, .. (.. ),
(.. ) (.. ),
,
-
:
- , ( ), ( ), (, ..) Cu ( PVC , ( 150 oC) / , ,
. &
(1) Cu(2) -FPR (3) (4) Cu(5) Polychloroprene
MGCC type [Fulgor Greek Electric Cables SA]
(2/2)
-
, :
. &
( ): =
: =1.25
:
=1.25 1i1
I i0.5jI sj
(DC):
(AC) :
(AC) :
=PV
=P
Vcos
=P
3V cos
(.. ) : cos=1
( )
6 10 16 20 25 35 5063 80 100 125 160 200 250400 630 1000 1250 1600 2000 3150
: 1
i
sj j ( )
i1
-
6% ( LRS). :
, - , , 85% ( ) , -
. &
(AC) :
(AC) :
(DC) - : V=
2lIS
V= 2lIS
V= 3lIS
: l S
( Cu, =0,0294 mm2/m)
-
(1/2) -
:
, 20
-
(2/2) -
Diesel :
:
- :
:
. &
PG=0,015P Dm1,6z9 z80P c
PG=0,008P Dm1,6z9 z80P c
PDm (HP)
P =340,33z
( kW)
63 80 100 125 160 200 250315 400 500 630 800 1000 1250
P NG=PG : ( =0,82)0,750,90
-
(1/3) / : () , () , () - ( , - ..)
. &
/
( )
(
)
P..
( )
P..
( )
P
(
)
N'
( )
fs P(
N' fs P N' fs P
PS kW kW kW kW kW kW
1
2
3..
-
(2/3)
. &
fs ( ) :
f s= 24
=iP it i
24P..
/
( )
(
)
P..
( )
P..
( )
P
(
)
N'
( )
fs P(
N' fs P N' fs P
.. PS kW kW kW kW kW kW
1
0,885 4 30 P.. / =33,9
4 x P.. =135,6
4 0,85 4x0,85x33,9
4 0,85 2 0,2
2 ..
3.. ..
(.. . ,
), () , () -
:
P.. = P... /
:P. = P. . x
(
)
:P
i 24-ti Pi
24-
-
(3/3) ,,, ( ) , P
P :
, ( 15%) 2500 kW (>6 MVA) (3,3-6 kV) , , , ,
. &
: 2200 kW
2200 kW , . ,
, .. (shaft generator)
P =P..
N ' f s=P.N ' f s
P =P . f s
( )
( , , , . )
: ( )
-
- (emergency generator) (black out) , (.. 3-12 ) () , , (/, /-/, /-/ . ) (.. , A,,, 98/18 ) / (. . 98/18) ( ), , , ,
. &
-
(fs) (1/2)
. &
[.. , , , 1998]
-
(fs) (2/2)
. &
[.. , , , 1998]
-
()
. &
[.. , , , 1998]
-
(1/2)
. &
[Fulgor Greek Electric Cables SA]
-
(2/2)
. &
[Fulgor Greek Electric Cables SA]
1_ 2_ (1/2)3_ (2/2)4_ _ 5_ _ 6_ . (1/2)7_ . (2/2)8_ (1/3)9_ (2/3)10_ (3/3)11_ 12_ (1/4)13_ (2/4)14_ . 15_ (1/2)16_ (2/2)
