jica · f13(fk01) power system analysis for step a - power system analysis for existing system...
TRANSCRIPT
-
Power System Analysis
- Accra East 11kV -
-
F13(FK01)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eOK
OM
LEM
LE (M
AIN
Feed
er N
ame
F13(
FK01
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.8
kVR
ated
Cur
rent
33%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
9km
(cosθ)
(1%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
109A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
F03(FD38)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
260A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
9km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.6
kVR
ated
Cur
rent
78%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e OK
OM
LEM
LE (M
AIN
Feed
er N
ame
F03(
FD38
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
F15(FK02)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eOK
OM
LEM
LE (M
AIN
Feed
er N
ame
F15(
FK02
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.6
kVR
ated
Cur
rent
94%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
8km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
316A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
F11(FD19)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
333A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
9km
(cosθ)
(5%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.5
kVR
ated
Cur
rent
99%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e OK
OM
LEM
LE (M
AIN
Feed
er N
ame
F11(
FD19
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
F04(FD48)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eOK
OM
LEM
LE (M
AIN
Feed
er N
ame
F04(
FD48
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.7
kVR
ated
Cur
rent
75%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
8km
(cosθ)
(3%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
252A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
(Type-3)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
7N
o.7
No.
7
→I m
axR
T1
=1Ω
XT1
=2Ω
RT2
=1Ω
XT2
=1Ω
RB
2=1Ω
XB
2=1Ω
Trun
k Li
ne 1
Trun
k Li
ne 2
Bra
nch
Line
2
RB
1=1Ω
XB
1=1Ω
RB
3=1Ω
XB
3=1Ω
Bra
nch
Line
1B
ranc
h Li
ne 3
No.
7N
o.7
====
=Equ
atio
n===
==V
i1 =
Vs-
1.73
2・(R
T1co
sθ +
XT1
sinθ
)・(L
T1・f T
1 + L
T2 +
LB
1 +
L B2 +
L B3)
Vi2 =
Vi1-
1.73
2・(R
T2co
sθ +
XT2
sinθ
)・(L
T2・f T
2 + L
B2 +
L B3)
Vr1
= V
i1-
1.73
2・L B
1(R
B1c
osθ
+ X
B1s
inθ
)・f B
1
Vr2
= V
i2-
1.73
2・L B
2(R
B2c
osθ
+ X
B2s
inθ
)・f B
2
Vr3
= V
i2-
1.73
2・L B
3(R
B3c
osθ
+ X
B3s
inθ
)・f B
3
LT1
= I
max
・C
AP
T1/
(CA
PT1+
CA
PT2+
CA
PB
1+C
AP
B2+C
AP
B3)
LT2
= I
max
・C
AP
T2/
(CA
PT1+
CA
PT2+
CA
PB
1+C
AP
B2+C
AP
B3)
LB
1 =
Im
ax・C
AP
B1/
(CA
PT1+
CA
PT2+
CA
PB
1+C
AP
B2+C
AP
B3)
LB
2 =
Im
ax・C
AP
B2/
(CA
PT1+
CA
PT2+
CA
PB
1+C
AP
B2+C
AP
B3)
LB
3 =
Im
ax・C
AP
B3/
(CA
PT1+
CA
PT2+
CA
PB
1+C
AP
B2+C
AP
B3)
I max
= L
T1
+ L
T2
+ L
B1 +
LB
2 +
LB
3
Vs
: Sup
ply
Vol
tage
I max
: Max
imum
Cur
rent
: Res
ista
nce
Vi1
: Int
erim
Vol
tage
L T1
: Loa
d (T
runk
line
1)
: Rea
ctan
ceV
i2: I
nter
im V
olta
geL T
2: L
oad
(Tru
nk li
ne 2
)f T
1, f T
2, f B
1, f B
2, f B
3
Vr1
L B1
: Loa
d (B
ranc
h Li
ne 1
)V
r2L B
2: L
oad
(Bra
nch
Line
2)
Vr3
L B3
: Loa
d (B
ranc
h Li
ne 3
)co
sθ: P
ower
Fac
tor
: Dis
pers
al L
oad
Fact
or
: Tot
al T
rans
form
er C
apac
ity o
f sec
onda
ry s
ubst
atio
ns
Type
of D
istri
bute
d Lo
adE
qual
ity
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP T
2
L B1 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
215A
AA
C12
0mm
2
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
1
2630
kVA
AA
C12
0mm
2Ty
pe o
f Loa
dE
qual
ityLi
ne L
engt
h Le
n B1
2km
Vol
tage
Vr2
9.1k
V(1
7%D
rop)
Load
ing
15%
Rat
ed C
urre
nt=4
55A
Max
imum
L T1
(Dis
tribu
ted
Load
)
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP T
1
L B2 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
Pow
er fa
ctor
Loading
Load
LB
1
Sub
stat
ion
Nam
eA
DE
NTA
(MA
IN T
)Fe
eder
Nam
eT0
4(R
ED
CO
)
Load
ing
Type
-3
Cur
rent
I max
415A
Load
LT1
Type
of D
istri
bute
d Lo
ad
Line
Typ
eA
AA
C12
0mm
2
Equ
ality
Line
Leg
th L
enT2
2km
Line
Typ
e
Vol
tage
Vi1
9.5k
VR
ated
Cur
rent
91%
9.3k
V(1
6%D
rop)
Vol
tage
Vr1
47%
Line
Typ
eA
AC
120m
m2
0.85
Line
Leg
th L
enT1
5km
(cosθ)
(14%
Dro
p)=4
55A
Vol
tage
VS
11.0
kV
Equ
ality
Line
Len
gth
Len B
13k
m
Line
Typ
e
Type
of L
oad
: Inp
ut d
ata
in c
olor
ed c
ells
=455
A
Rat
ed C
urre
nt=4
55A
Load
LB
267
A
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
2
815k
VA
Load
LT2
A
L T2
(Dis
tribu
ted
Load
)
Loading
44%
Rat
ed C
urre
nt
Vol
tage
Vi2
9.2k
V(1
9%D
rop)
Load
ing
133A
Line
Typ
eA
AC
120m
m2
Type
of L
oad
Equ
ality
Load
LB
3
Line
Len
gth
Len B
34k
m
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
3
1630
kVA
Vol
tage
Vr3
9.0k
V(1
8%D
rop)
L B3 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
29%
Rat
ed C
urre
nt=4
55A
: Rec
eive
d V
olta
ge
RT1
, RT2
, RB
1, R
B2,
RB
3
X T1,
X T2,
X B1,
X B2,
X B3
CA
PB
2, C
AP
B3
CA
P T1,
CA
PT2
, CA
PB
1: R
ecei
ved
Vol
tage
: Rec
eive
d V
olta
ge
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G013(G56)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eWE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
013(
G56
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.7
kVR
ated
Cur
rent
72%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
8km
(cosθ)
(3%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
240A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G07(G06)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
215A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
4km
(cosθ)
(1%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.9
kVR
ated
Cur
rent
64%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e WE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
07(G
06)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G11(G13)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eWE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
11(G
13)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.7
kVR
ated
Cur
rent
75%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
7km
(cosθ)
(2%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
250A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G19(G60)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
300A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
8km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.6
kVR
ated
Cur
rent
90%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
eW
ER
HO
US
E(M
AIN
Feed
er N
ame
G19
(G60
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G12(G47)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eWE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
12(G
47)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Rec
eive
d La
rger
Vol
tage
Vr
10.6
kVR
ated
Cur
rent
87%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
6km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
290A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G02(G33)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
260A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
7km
(cosθ)
(3%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.7
kVR
ated
Cur
rent
78%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e WE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
02(G
33)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
GO6(G64)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eWE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
06(G
64)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.7
kVR
ated
Cur
rent
81%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
6km
(cosθ)
(2%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
270A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G04(G351)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eWE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
04(G
351)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.6
kVR
ated
Cur
rent
72%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
9km
(cosθ)
(3%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
240A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
G21(G25)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
310A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
12km
(cosθ)
(6%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.4
kVR
ated
Cur
rent
93%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e WE
R H
OU
SE
(MA
IINFe
eder
Nam
eG
21(G
25)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
H02(H351)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
7
→I m
axD
istri
bute
d Lo
adR
T=4Ω
XT
=5Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
e AC
HIM
OTA
(MA
IN H
Feed
er N
ame
H02
(H35
1)
Type
of D
istri
bute
d Lo
ad
Line
Typ
eA
AC
120m
m2
Equ
ality
Vol
tage
Vr
8.9k
VR
ated
Cur
rent
85%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=455
A
Type
-1
0.85
Line
Leg
th L
enT
15km
(cosθ)
(19%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
387A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
H05(H06)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
304A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
13km
(cosθ)
(6%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.3
kVR
ated
Cur
rent
91%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
eAC
HIM
OTA
(MA
IN H
Feed
er N
ame
H05
(H06
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
H10(H10)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
e AC
HIM
OTA
(MA
IN H
Feed
er N
ame
H10
(H10
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.3
kVR
ated
Cur
rent
84%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
14km
(cosθ)
(6%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
280A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
H04(H07)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
265A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
11km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.5
kVR
ated
Cur
rent
79%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
eAC
HIM
OTA
(MA
IN H
Feed
er N
ame
H04
(H07
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
H07(H351)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=ΩTr
unk
Line
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
245A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
4km
(cosθ)
(1%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.9
kVR
ated
Cur
rent
73%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
eAC
HIM
OTA
(MA
IN H
Feed
er N
ame
H07
(H35
1)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
H08(H24)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24N
o.24
→I m
axR
T=2Ω
XT
=2Ω
RB
1=Ω
XB
1=Ω
Trun
k Li
neB
ranc
h Li
ne 1
RB
2=Ω
XB
2=Ω
====
=Equ
atio
n===
==B
ranc
h Li
ne 2
V i =
Vs-
1.73
2・(R
Tcos
θ +
XTs
inθ
)(L T
・f T
+ (L
B1+
L B2)
)V r
1 = V
i-1.
732・
L B1(
RB
1cos
θ +
XB
1sin
θ)・
f B1
V r2 =
Vi-
1.73
2・L B
2(R
B2c
osθ
+ X
B2s
inθ
)・f B
2
L
T =
Im
ax・C
AP
T/
(CA
PT+C
AP
B1+C
AP
B2)
LB
1 =
Im
ax・C
AP
B1/
(CA
PT+C
AP
B1+C
AP
B2)
No.
24L
B2 =
Im
ax・C
AP
B2/
(CA
PT+C
AP
B1+C
AP
B2)
I max
= L
T +
LB
1 +
LB
2
V s: S
uppl
y V
olta
geI m
ax: M
axim
um C
urre
nt: R
esis
tanc
eV i
: Int
erim
Vol
tage
L T: L
oad
(Tru
nk li
ne)
: Rea
ctan
ceV r
1L B
1: L
oad
(Bra
nch
Line
1)
cosθ
: Pow
er F
acto
rV r
2L B
2: L
oad
(Bra
nch
Line
2)
f T, f
B1,
f B2
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Rat
ed C
urre
nt=3
35A
Line
Len
gth
Len B
13k
m
Line
Typ
eTy
pe o
f Loa
d
76A
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
1
2100
kVA
Load
LB
225
A
Load
ing
L B1 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
L B2 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
0.85
Line
Leg
th L
enT
12km
(cosθ)
Vol
tage
VS
11.0
kVR
ated
Cur
rent
84%
Loading
L T (D
istri
bute
d Lo
ad)
Load
LT
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
0A18
5ALX
PLE
(11k
V)
Equ
ality
Equ
ality
Load
LB
1
185A
LXP
LE(1
1kV
)
Sub
stat
ion
Nam
eAC
HIM
OTA
(MA
IN H
Feed
er N
ame
H08
(H24
)
Type
-2
Cur
rent
I max
281A
Pow
er fa
ctor
Max
imum
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP T
4975
kVA
Type
of L
oad
Equ
ality
RT,
RB
1, R
B2
XT,
XB
1, X
B2
(7%
Dro
p)10
.2kV
(7%
Dro
p)
Line
Typ
e18
5ALX
PLE
(11k
V)
10.2
kVV
olta
ge V
r123
%V
olta
ge V
i
(7%
Dro
p)
Load
ing
8%R
ated
Cur
rent
=335
AV
olta
ge V
r2
10.2
kV
: Tot
al T
rans
form
er C
apac
ity o
f sec
onda
ry s
ubst
atio
ns
Line
Len
gth
Len B
12k
mTo
tal T
rans
form
erC
apac
ity o
f sec
onda
rysu
bsta
tions
CA
P B2
700k
VA
CA
PT,
CA
P B1,
CA
P B2
: Rec
eive
d V
olta
ge: R
ecei
ved
Vol
tage
: Dis
pers
al L
oad
Fact
or
Prim
ary
Sub
stat
ion
JICA Study on "Power Distribution System Master Plan Study for G
hana"
-
K03(K09)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24N
o.24
→I m
axR
T=1Ω
XT
=1Ω
RB
1=Ω
XB
1=Ω
Trun
k Li
neB
ranc
h Li
ne 1
RB
2=1Ω
XB
2=1Ω
====
=Equ
atio
n===
==B
ranc
h Li
ne 2
V i =
Vs-
1.73
2・(R
Tcos
θ +
XTs
inθ
)(L T
・f T
+ (L
B1+
L B2)
)V r
1 = V
i-1.
732・
L B1(
RB
1cos
θ +
XB
1sin
θ)・
f B1
V r2 =
Vi-
1.73
2・L B
2(R
B2c
osθ
+ X
B2s
inθ
)・f B
2
L
T =
Im
ax・C
AP
T/
(CA
PT+C
AP
B1+C
AP
B2)
LB
1 =
Im
ax・C
AP
B1/
(CA
PT+C
AP
B1+C
AP
B2)
No.
24L
B2 =
Im
ax・C
AP
B2/
(CA
PT+C
AP
B1+C
AP
B2)
I max
= L
T +
LB
1 +
LB
2
V s: S
uppl
y V
olta
geI m
ax: M
axim
um C
urre
nt: R
esis
tanc
eV i
: Int
erim
Vol
tage
L T: L
oad
(Tru
nk li
ne)
: Rea
ctan
ceV r
1L B
1: L
oad
(Bra
nch
Line
1)
cosθ
: Pow
er F
acto
rV r
2L B
2: L
oad
(Bra
nch
Line
2)
f T, f
B1,
f B2
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Rat
ed C
urre
nt=3
35A
Line
Len
gth
Len B
12k
m
Line
Typ
eTy
pe o
f Loa
d
34A
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
1
1315
kVA
Load
LB
265
A
Load
ing
L B1 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
L B2 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
0.85
Line
Leg
th L
enT
6km
(cosθ)
Vol
tage
VS
11.0
kVR
ated
Cur
rent
63%
Loading
L T (D
istri
bute
d Lo
ad)
Load
LT
Type
of D
istri
bute
d Lo
ad
Line
Typ
e11
1A18
5ALX
PLE
(11k
V)
Equ
ality
Equ
ality
Load
LB
1
185A
LXP
LE(1
1kV
)
Sub
stat
ion
Nam
eCH
BA
CK
RO
AD
(MA
Feed
er N
ame
K03
(K09
)
Type
-2
Cur
rent
I max
210A
Pow
er fa
ctor
Max
imum
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP T
4215
kVA
Type
of L
oad
Equ
ality
RT,
RB
1, R
B2
XT,
XB
1, X
B2
(3%
Dro
p)10
.7kV
(3%
Dro
p)
Line
Typ
e18
5ALX
PLE
(11k
V)
10.7
kVV
olta
ge V
r110
%V
olta
ge V
i
(3%
Dro
p)
Load
ing
19%
Rat
ed C
urre
nt
=335
AV
olta
ge V
r2
10.6
kV
: Tot
al T
rans
form
er C
apac
ity o
f sec
onda
ry s
ubst
atio
ns
Line
Len
gth
Len B
15k
mTo
tal T
rans
form
erC
apac
ity o
f sec
onda
rysu
bsta
tions
CA
P B2
2480
kVA
CA
PT,
CA
P B1,
CA
P B2
: Rec
eive
d V
olta
ge: R
ecei
ved
Vol
tage
: Dis
pers
al L
oad
Fact
or
Prim
ary
Sub
stat
ion
JICA Study on "Power Distribution System Master Plan Study for G
hana"
-
K04(K10)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
285A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
10km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.5
kVR
ated
Cur
rent
85%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e CH
BA
CK
RO
AD
(MA
Feed
er N
ame
K04
(K10
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
K05(K150)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=3Ω
XT
=3Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eCH
BA
CK
RO
AD
(MA
Feed
er N
ame
K05
(K15
0)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
9.8k
VR
ated
Cur
rent
103%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
20km
(cosθ)
(11%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
346A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
K13(K13)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=3Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
270A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
17km
(cosθ)
(7%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.2
kVR
ated
Cur
rent
81%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
e CH
BA
CK
RO
AD
(MA
Feed
er N
ame
K13
(K13
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
K06(K60)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eCH
BA
CK
RO
AD
(MA
Feed
er N
ame
K06
(K60
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.3
kVR
ated
Cur
rent
91%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
13km
(cosθ)
(6%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
305A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
K10(K61)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
198A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
9km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.6
kVR
ated
Cur
rent
59%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Rec
eive
d La
rger
Sub
stat
ion
Nam
eCH
BA
CK
RO
AD
(MA
Feed
er N
ame
K10
(K61
)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
K11(K06)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V
r = V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
Vs
: Sup
ply
Vol
tage
RT
: Res
ista
nce
f T: D
ispe
rsal
Loa
d Fa
ctor
Vr
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eCH
BA
CK
RO
AD
(MA
Feed
er N
ame
K11
(K06
)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.6
kVR
ated
Cur
rent
87%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
8km
(cosθ)
(4%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
290A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
K12(K07)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24N
o.24
→I m
axR
T=Ω
XT
=ΩR
B1
=ΩX
B1
=ΩTr
unk
Line
Bra
nch
Line
1
RB
2=Ω
XB
2=Ω
====
=Equ
atio
n===
==B
ranc
h Li
ne 2
V i =
Vs-
1.73
2・(R
Tcos
θ +
XTs
inθ
)(L T
・f T
+ (L
B1+
L B2)
)V r
1 = V
i-1.
732・
L B1(
RB
1cos
θ +
XB
1sin
θ)・
f B1
V r2 =
Vi-
1.73
2・L B
2(R
B2c
osθ
+ X
B2s
inθ
)・f B
2
L
T =
Im
ax・C
AP
T/
(CA
PT+C
AP
B1+C
AP
B2)
LB
1 =
Im
ax・C
AP
B1/
(CA
PT+C
AP
B1+C
AP
B2)
No.
24L
B2 =
Im
ax・C
AP
B2/
(CA
PT+C
AP
B1+C
AP
B2)
I max
= L
T +
LB
1 +
LB
2
V s: S
uppl
y V
olta
geI m
ax: M
axim
um C
urre
nt: R
esis
tanc
eV i
: Int
erim
Vol
tage
L T: L
oad
(Tru
nk li
ne)
: Rea
ctan
ceV r
1L B
1: L
oad
(Bra
nch
Line
1)
cosθ
: Pow
er F
acto
rV r
2L B
2: L
oad
(Bra
nch
Line
2)
f T, f
B1,
f B2
: Rec
eive
d V
olta
ge: R
ecei
ved
Vol
tage
: Dis
pers
al L
oad
Fact
or: T
otal
Tra
nsfo
rmer
Cap
acity
of s
econ
dary
sub
stat
ions
Line
Len
gth
Len B
12k
mTo
tal T
rans
form
erC
apac
ity o
f sec
onda
rysu
bsta
tions
CA
P B2
2065
kVA
CA
PT,
CA
P B1,
CA
P B2
Vol
tage
Vr1
27%
Vol
tage
Vi
(2%
Dro
p)
Load
ing
28%
Rat
ed C
urre
nt
=335
AV
olta
ge V
r2
10.8
kV
(2%
Dro
p)10
.7k V
(2%
Dro
p)
Line
Typ
e18
5ALX
PLE
(11k
V)
10.8
kV
Type
of L
oad
Equ
ality
RT,
RB
1, R
B2
XT,
XB
1, X
B2
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP T
1000
kVA
Type
-2
Cur
rent
I max
233A
Pow
er fa
ctor
Max
imum
Sub
stat
ion
Nam
e CH
BA
CK
RO
AD
(MA
Feed
er N
ame
K12
(K07
) Load
LT
Type
of D
istri
bute
d Lo
ad
Line
Typ
e46
A18
5ALX
PLE
(11k
V)
Equ
ality
Equ
ality
Load
LB
1
185A
LXP
LE(1
1kV
)
0.85
Line
Leg
th L
enT
3km
(cosθ)
Vol
tage
VS
11.0
kVR
ated
Cur
rent
70%
Loading
L T (D
istri
bute
d Lo
ad)
2000
kVA
Load
LB
295
A
Load
ing
L B1 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
L B2 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Rat
ed C
urre
nt=3
35A
Line
Len
gth
Len B
13k
m
Line
Typ
eTy
pe o
f Loa
d
92A
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
1
Prim
ary
Sub
stat
ion
JICA Study on "Power Distribution System Master Plan Study for G
hana"
-
L11(L01)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24N
o.24
→I m
axR
T=1Ω
XT
=1Ω
RB
1=Ω
XB
1=Ω
Trun
k Li
neB
ranc
h Li
ne 1
RB
2=1Ω
XB
2=1Ω
====
=Equ
atio
n===
==B
ranc
h Li
ne 2
V i =
Vs-
1.73
2・(R
Tcos
θ +
XTs
inθ
)(L T
・f T
+ (L
B1+
L B2)
)V r
1 = V
i-1.
732・
L B1(
RB
1cos
θ +
XB
1sin
θ)・
f B1
V r2 =
Vi-
1.73
2・L B
2(R
B2c
osθ
+ X
B2s
inθ
)・f B
2
L
T =
Im
ax・C
AP
T/
(CA
PT+C
AP
B1+C
AP
B2)
LB
1 =
Im
ax・C
AP
B1/
(CA
PT+C
AP
B1+C
AP
B2)
No.
24L
B2 =
Im
ax・C
AP
B2/
(CA
PT+C
AP
B1+C
AP
B2)
I max
= L
T +
LB
1 +
LB
2
V s: S
uppl
y V
olta
geI m
ax: M
axim
um C
urre
nt: R
esis
tanc
eV i
: Int
erim
Vol
tage
L T: L
oad
(Tru
nk li
ne)
: Rea
ctan
ceV r
1L B
1: L
oad
(Bra
nch
Line
1)
cosθ
: Pow
er F
acto
rV r
2L B
2: L
oad
(Bra
nch
Line
2)
f T, f
B1,
f B2
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Rat
ed C
urre
nt=3
35A
Line
Len
gth
Len B
13k
m
Line
Typ
eTy
pe o
f Loa
d
157 A
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP B
1
5500
kVA
Load
LB
228
A
Load
ing
L B1 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
L B2 (D
istri
bute
d or
Con
cent
rate
d Lo
ad)
0.85
Line
Leg
th L
enT
8km
(cosθ)
Vol
tage
VS
11.0
kVR
ated
Cur
rent
78%
Loading
L T (D
istri
bute
d Lo
ad)
Load
LT
Type
of D
istri
bute
d Lo
ad
Line
Typ
e75
A18
5ALX
PLE
(11k
V)
Equ
ality
Equ
ality
Load
LB
1
185A
LXP
LE(1
1kV
)
Sub
stat
ion
Nam
eUR
MA
CA
MP
(MA
INFe
eder
Nam
eL1
1(L0
1)
Type
-2
Cur
rent
I max
260A
Pow
er fa
ctor
Max
imum
Tota
l Tra
nsfo
rmer
Cap
acity
of s
econ
dary
subs
tatio
ns C
AP T
2630
kVA
Type
of L
oad
Equ
ality
RT,
RB
1, R
B2
XT,
XB
1, X
B2
(5%
Dro
p)10
.3kV
(6%
Dro
p)
Line
Typ
e18
5ALX
PLE
(11k
V)
10.4
kVV
olta
ge V
r147
%V
olta
ge V
i
(6%
Dro
p)
Load
ing
9%R
ated
Cur
rent
=335
AV
olta
ge V
r2
10.4
kV
: Tot
al T
rans
form
er C
apac
ity o
f sec
onda
ry s
ubst
atio
ns
Line
Len
gth
Len B
17k
mTo
tal T
rans
form
erC
apac
ity o
f sec
onda
rysu
bsta
tions
CA
P B2
1000
kVA
CA
PT,
CA
P B1,
CA
P B2
: Rec
eive
d V
olta
ge: R
ecei
ved
Vol
tage
: Dis
pers
al L
oad
Fact
or
Prim
ary
Sub
stat
ion
JICA Study on "Power Distribution System Master Plan Study for G
hana"
-
L10(L22)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
205A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
15km
(cosθ)
(5%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.5
kVR
ated
Cur
rent
61%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
eUR
MA
CA
MP
(MA
INFe
eder
Nam
eL1
0(L2
2)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
L06(L12)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
e UR
MA
CA
MP
(MA
INFe
eder
Nam
eL0
6(L1
2)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.5
kVR
ated
Cur
rent
81%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
12km
(cosθ)
(5%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
270A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
L04(L03)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Max
imum
Cur
rent
I max
220A
Pow
er fa
ctor
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
14km
(cosθ)
(5%
Dro
p)
Vol
tage
VS
11.0
kVV
olta
ge V
r
10.5
kVR
ated
Cur
rent
66%
Loading
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Sub
stat
ion
Nam
eUR
MA
CA
MP
(MA
INFe
eder
Nam
eL0
4(L0
3)
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
L03(L02)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adR
T=2Ω
XT
=2Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsin
θ)・
f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
e UR
MA
CA
MP
(MA
INFe
eder
Nam
eL0
3(L0
2)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.3
kVR
ated
Cur
rent
84%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
16km
(cosθ)
(7%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
280A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
M05(Old Legon 2)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yste
m A
naly
sis
for e
xist
ing
syst
em u
sing
Mac
ro d
eman
d fo
reca
st -
No.
24
→I m
axD
istri
bute
d Lo
adRT
=1Ω
XT
=1Ω
Trun
k Li
ne
====
=Equ
atio
n===
==V r
= V
s-1.
732・
I max
(RTc
osθ
+ X
Tsinθ
)・f T
V s: S
uppl
y V
olta
geR
T: R
esis
tanc
ef T
: Dis
pers
al L
oad
Fact
orV r
: Rec
eive
d V
olta
geX
T: R
eact
ance
I max
: Max
imum
Cur
rent
cosθ
: Pow
er F
acto
r
Sub
stat
ion
Nam
eLE
GO
N(M
AIN
M)
Feed
er N
ame
M05
(Old
lego
n 2)
Type
of D
istri
bute
d Lo
ad
Line
Typ
e18
5ALX
PLE
(11k
V)
Equ
ality
Vol
tage
Vr
10.6
kVR
ated
Cur
rent
84%
Loading
: Inp
ut d
ata
in c
olor
ed c
ells
=335
A
Type
-1
0.85
Line
Leg
th L
enT
8km
(cosθ)
(3%
Dro
p)
Vol
tage
VS
11.0
kV
Max
imum
Cur
rent
I max
280A
Pow
er fa
ctor
Prim
ary
Sub
stat
ion
JICA
Stu
dy o
n "P
ower
Dis
trib
utio
n Sy
stem
Mas
ter
Plan
Stu
dy f
or Gha
na"
-
M01(Old Legon 1)
Pow
er S
yste
m A
naly
sis
for S
tep
A -
Pow
er S
yst