Internati
o
nal
Journal of Ele
c
trical
and Computer
Engineering
(IJE
CE)
V
o
l.
5, N
o
. 4
,
A
ugu
st
2015
, pp
. 65
6
~
66
8
I
S
SN
: 208
8-8
7
0
8
6
56
Jo
urn
a
l
h
o
me
pa
ge
: h
ttp
://iaesjo
u
r
na
l.com/
o
n
lin
e/ind
e
x.ph
p
/
IJECE
Integration of Solar
Power
Pl
ant in Distrib
u
tion Network
Srete
N. Nikol
ovs
ki, Pre
d
rag Ž
.
Mari
ć
, L
j
ubomir
V.
Majdandž
i
ć
Departement of
Power Engineering, Facu
lty
of Electical Engineer
ing,
Josip Juraj S
t
rossmy
e
r University
of Osije
k
,
Osijek, Cro
a
ti
a
Article Info
A
B
STRAC
T
Article histo
r
y:
Received Apr 4, 2015
Rev
i
sed
May 11
, 20
15
Accepted
May 29, 2015
This pap
e
r prese
n
ts the
integ
r
at
i
on of the
solar
p
o
wer plan
t SE
Gum
iim
pex,
rated power of
1 MW in Croatian distri
bution n
e
twork. Basic d
a
ta of solar
power plan
t ar
e
pres
ent
e
d
as
well
as
the
an
a
l
y
s
is
of
its
im
pact
on th
e
distribution network. Power qu
ality
m
easurements, seven day
s
before and
seven day
s
af
ter
the connection o
f
PV
plant to the network are per
f
ormed and
obtain
e
d power qualit
y ind
i
ces
are com
p
ar
ed to
thos
e s
t
ated in the power
quality
s
t
and
a
rd
HRN EN 50160/2012 and Croatian national grid
code. There
are a
l
s
o
pres
ent
e
d res
u
lts
of
th
e s
i
m
u
lation of
protection r
e
lay
s
selection
,
setting
and
coor
dination
.
Keyword:
Computer
sim
u
l
a
tio
n
Power qu
ality
Prot
ect
i
o
n c
o
or
di
nat
i
o
n
Sho
r
t circu
it calcu
l
atio
n
Solar power
pl
ant
Copyright ©
201
5 Institut
e
o
f
Ad
vanced
Engin
eer
ing and S
c
i
e
nce.
All rights re
se
rve
d
.
Co
rresp
ond
i
ng
Autho
r
:
Srete Nikolovs
ki,
Depa
rt
m
e
nt
of Po
wer En
gi
nee
r
i
n
g,
Faculty of Elec
trical Engi
n
eerin
g
,
Jo
sip
Juraj Stro
ssm
yer Un
iv
ersity o
f
Osij
ek
K
.
Trp
i
mir
a
2B, 310
00
O
s
ij
ek
, C
r
o
a
tia.
Em
a
il: srete.n
i
k
o
l
o
v
sk
i@et
fos.hr
1.
INTRODUCTION
In
or
de
r t
o
rea
c
h t
h
e l
i
m
it
of
20
% o
f
el
ect
ri
ci
t
y
generat
e
d
fr
om
renewa
bl
e ener
gy
s
o
u
r
c
e
s, C
r
oat
i
a
n
go
ve
rnm
e
nt
has deci
de
d t
o
i
n
t
r
od
uce a sy
st
em
of i
n
cent
i
v
e f
o
r re
n
e
wabl
e ene
r
gy
sou
r
ces. T
h
e
abo
v
e
m
e
nt
i
oned i
n
c
e
nt
i
v
es
have c
a
use
d
an i
n
cre
a
sed i
n
t
e
re
st
fr
om
i
nvest
ors t
o
b
u
i
l
d
s
o
l
a
r
p
o
we
r
pl
ant
s
(i
n
s
t
a
l
l
e
d
po
we
r f
r
om
1
0
k
W
t
o
1
M
W).
Acc
o
r
d
i
n
g t
o
pu
bl
i
c
avai
l
a
bl
e dat
a
fr
om
C
r
oat
i
a
n
Ene
r
gy
M
a
r
k
et
O
p
erat
or
-
H
R
O
T
E, t
o
tal in
stalled
cap
acities o
f
PV
p
l
an
ts in
C
r
o
a
tia
are
3
7
.6
M
W
(o
n 31
.12
.
2
014) [5
]. Th
e
first
larg
e
so
lar in
stallatio
n
(1
M
W) in
Cro
a
tia was SE Kanfan
ar and
second
is SE Gu
m
i
i
m
p
e
x
in
to
wn
Varažd
i
n
, wh
ich
i
s
anal
y
zed i
n
t
h
i
s
p
a
pe
r.
HR
OTE a
n
d t
h
e
i
nve
st
or
co
ncl
u
de c
ont
ract
f
o
r
t
h
e
pu
rc
hase
o
f
el
ect
ri
ci
t
y
pr
od
uce
d
fr
om
PV po
w
e
r pl
a
n
t
.
Th
e
pri
ce
of el
ect
r
i
ci
t
y
i
s
det
e
rmined
by the re
gulated
fe
e
d
-i
n tariffs that i
n
clude
i
n
cent
i
v
es
. I
n
or
der t
o
o
b
t
a
i
n
such a c
ont
rac
t
, i
nvest
o
r
i
s
o
b
l
i
g
ed t
o
m
a
ke, am
ong ot
he
r t
h
i
n
gs, t
h
ree t
echni
ca
l
st
udi
es.
T
h
e
pr
obl
em
from
i
n
vest
o
r
s i
s
t
o
sa
t
i
s
fy
dem
a
nds
gi
ve
n
by
C
r
oat
i
an nat
i
onal
gri
d
c
o
m
p
any
f
o
r
t
h
ese
st
udi
es an
d t
h
i
s
pape
r gi
ves
pr
oce
d
u
r
e an
d
t
echni
cal
sol
u
t
i
ons f
o
r i
n
ves
t
ors. T
h
e fi
rst
i
s
t
h
e “St
udy
of t
h
e
opt
i
m
al
t
echni
cal
sol
u
t
i
o
n
of
PV
pl
ant
c
o
nn
ect
i
on t
o
t
h
e
di
st
ri
but
i
o
n
net
w
or
k”,
t
h
e sec
o
n
d
i
s
t
h
e “St
udy
of
t
h
e
i
m
p
act o
f
PV
p
l
an
t on
t
h
e power
qu
ality in
d
i
ces o
n
t
h
e
d
i
stribu
tio
n
n
e
twork
and
th
e t
h
ird
is th
e “St
u
d
y
o
f
t
h
e
pr
ot
ect
i
o
n
set
t
i
ngs
a
n
d
co
or
di
nat
i
o
n
o
f
PV
p
o
we
r
pl
ant
a
n
d
t
h
e
di
st
ri
b
u
t
i
o
n
net
w
or
k”.
Th
e f
i
r
s
t study d
eals w
ith
t
h
e b
e
st v
a
r
i
ant o
f
PV
po
w
e
r
p
l
an
t con
n
e
ctio
n
to
th
e n
e
tw
or
k
an
d
it
co
n
t
ains p
o
wer
flow
calcu
latio
n, v
o
ltag
e
d
r
op
s
an
alysis,
v
o
ltag
e
stab
ility an
alysis as
well as th
e
N-1 secu
rity
analysis [1].
Above m
e
ntioned a
n
al
yzes a
r
e carried
out
for both the
m
a
x
i
mu
m a
n
d
mi
n
i
mu
m l
o
a
d
i
n
th
e
d
i
stribu
tio
n
n
e
twork. Th
e seco
nd
stud
y in
clu
d
e
s calcu
latio
n
and
m
easu
r
emen
t o
f
p
o
wer q
u
a
lity p
a
rameters,
seve
n
day
s
bef
o
re
an
d
seve
n
day
s
aft
e
r t
h
e
con
n
ect
i
o
n
of
t
h
e P
V
p
o
we
r
p
l
ant
t
o
t
h
e
net
w
o
r
k
[
2
]
.
T
h
e
res
u
l
t
s
shoul
d
be
in
accorda
n
ce wi
th Eur
opea
n
Croatian) standard E
N
(HR
N
) 50160:2012
as well
as with
the
Cro
a
tian n
a
tion
a
l grid cod
e
.
Th
e
Stud
y of t
h
e
p
r
o
t
ectio
n
r
e
l
a
y
s
set
t
i
ngs a
n
d
co
o
r
di
nat
i
o
n i
s
ve
ry
i
m
port
a
nt
f
o
r
d
i
stribu
tio
n network an
d PV po
wer
p
l
an
t secu
rity and
reliabilit
y [3
].
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
088
-87
08
I
J
ECE Vo
l. 5
,
N
o
. 4
,
Au
gu
st 2
015
:
65
6
–
66
8
6
57
2.
TECHNICAL
DATA
OF
PV
POWE
R
P
L
ANT
So
lar
po
wer
plan
t Gu
m
i
i
m
p
e
x
is bu
ilt on
th
e ro
of
o
f
t
h
e ex
istin
g bu
ildin
g
and
cov
e
rs an
area of
ap
pro
x
. 7
530
m
2
and
co
nsi
s
t
s
o
f
4
5
6
4
p
hot
ov
ol
t
a
i
c
m
odul
es at
t
ached
t
o
an al
um
i
n
i
u
m
fram
e
. The t
o
t
a
l
p
o
we
r
of
p
hot
o
vol
t
a
i
c
m
odul
es i
s
11
41
k
W
,
an
d t
h
e t
o
t
a
l
p
o
we
r
o
f
6
7
t
h
ree
-
phas
e
i
nve
rt
ers
i
s
9
9
9
k
W
.
P
hot
ov
ol
t
a
i
c
m
odul
es are c
o
n
n
ect
ed i
n
se
ri
es t
o
f
o
rm
st
ri
ngs
. C
o
nsi
d
e
r
i
ng t
h
e n
u
m
b
er
of se
ri
es-c
o
n
n
ect
ed m
odul
es,
t
h
ere
are f
o
u
r
t
y
pes
of st
ri
ng
s:
2
4
m
odul
es i
n
o
n
e
st
ri
ng
, 2
3
m
odul
es i
n
o
n
e st
ri
ng
, 2
2
m
odul
e
s
i
n
o
n
e st
ri
n
g
and
2
1
m
odules in
one string. P
o
lycrystalline phot
ovoltaic m
odul
es S
o
lvis S
V
60-250 are
use
d
. E
v
ery
PV m
odule is
con
s
i
s
t
of 6
0
cel
l
s
and t
o
t
a
l
rat
e
d p
o
we
r o
f
m
odul
e i
s
25
0
W
.
Di
m
e
nsions
of t
h
e m
odul
e are
16
6
3
m
m
x
99
8m
m
x 35m
m
and t
o
t
a
l
m
odul
e
wei
g
ht
i
s
21
.5
k
g
.
B
a
si
c
dat
a
ab
o
u
t
P
V
m
odul
e are
pr
e
s
ent
e
d
i
n
Ta
bl
e
I.
Tabl
e
1. T
h
e
P
hot
ov
ol
t
a
i
c
M
o
dl
ue
Dat
a
M
odule ty
pe
Solvis
SV60-
150
Rating values
Power
250
W
Open circuit
voltage
37,
6
V
Short circuit
cu
rren
t
8,
67A
Rated voltage
30.
5 V
Rated cur
r
e
nt
680
H
Sin
g
l
e
lin
e d
i
ag
ram
o
f
PV po
wer p
l
an
t
and
u
tility
TS
11
0
/
2
0
k
V
sub
s
tatio
n
,
20
k
V
d
i
stribu
tion
net
w
or
ka
n P
V
po
we
r
pl
ant
i
s
sho
w
n i
n
Fi
gu
r
e
1.
T
h
e c
o
n
n
e
c
t
i
on
of
P
V
po
wer
pl
a
n
t
i
s
wi
t
h
TS
2
0
/
0
.4
k
V
.
Fi
gu
re
1.
Si
n
g
l
e
l
i
n
e di
a
g
ram
of
PV
pl
a
n
t
a
n
d
di
st
ri
b
u
t
i
o
n
n
e
t
w
o
r
k
F-
1126
.
.
L1384
Kompenzacija
Breaker/S..
Vla
s
tita
..
HANJES
H
T
S AN
JES
Procistac
KTS PR
OC
ISTAC
BORMAX
TS
B
O
R
M
A
X
OPR.INTERCOM
INTE
RCOM
BHS TRNOVEC
TR BHS
SLOB ZONA1
SL
ZON
A
1
ZRINSKI
TR
Z
R
I
N
SK
I
GUMIIMPEX2
GUMIIMPEX1
TR
GU
MIIMPEX2
TS GUMI
F-1297
F-1296
F-1257
F-1256
F-1217
F-1216
F-1020
F-1126
F-1299
F-1298
F-1259
F-1258
F-1219
F-1218
F-1140
F-950
L1458
L1453
L1448
L1443
L1438
L1433
L1428
L1423
L1418
L1413
L1408
L1403
L1398
L1393
L1388
L1383
L1585
L1541
L1536
L1478
L1473
L1468
L1463
L959
L920
L10
L13
L14
TR2-821
L12
L11
L9
L6
L5
L8
L7
L4
L3
L2
L1
2-
Wi
ndi
ng.
.
110 kV
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
ECE
I
S
SN
:
208
8-8
7
0
8
Int
e
grat
i
o
n
of
Sol
ar P
o
w
e
r
P
l
ant
i
n
Di
st
ri
b
u
t
i
o
n
N
e
t
w
ork
(Srete Nikolovs
ki)
65
8
3.
POWER
Q
U
ALITY IN
DI
CES
Li
m
its o
n
th
e v
a
lu
es
o
f
so
me v
o
ltag
e
qu
ality p
a
ram
e
ters
sp
ecified
b
y
Cro
a
tian
n
a
tion
a
l g
r
id
co
de,
are s
h
own in T
a
ble 2.
Tab
l
e
2
.
Lim
its
on
th
e v
a
l
u
es
o
f
vo
ltag
e
qu
ality p
a
ram
e
ters
P
a
r
a
me
t
e
r
L
i
mi
t
v
a
l
u
e
s
R
e
ma
r
k
s
F
r
equency
49.
95 – 50.
0
5
Hz
standar
d
(
norm
a
l)
oper
a
tional
conditions
V
o
ltage violations
Un ± 10 %
95 % of
the ti
m
e
, 1
0
-
m
i
nutes aver
age
m
e
asured values
V
o
ltage unbal
ance
≤
1.
3 % Un
95 % of
the ti
m
e
, 1
0
-
m
i
nutes aver
age
m
e
asured values
V
o
ltage harmonic
distortion
THD
≤
2.
0 %
95 % of the tim
e
,
1
0
-
m
i
nutes average
m
e
asured values
Accord
ing
to
t
h
e Cro
a
tian
natio
n
a
l grid
cod
e
,
p
o
wer qu
ality
measu
r
emen
ts
are
p
e
rformed
at th
e
C
C
P
poi
nt
o
f
PV p
o
w
er pl
a
n
t
con
n
ect
i
o
n t
o
t
h
e net
w
or
k
.
In
th
is sam
p
le case th
is p
o
i
n
t
is 2
0
kV bu
s i
n
su
bstatio
n
20
/0
.4
k
V
). Power
qu
ality
m
eas
u
r
em
en
ts
b
e
fore and
after con
n
ecting
t
h
e PV
p
o
wer p
l
an
t to
the
n
e
two
r
k
was perfo
r
m
e
d
with
th
ree p
h
a
se p
o
wer qu
ality
an
al
yzer Flu
k
e 43
5.
Used in
strumen
t
is in
class A.
In
th
is p
a
p
e
r
on
ly so
m
e
p
o
wer
qu
ality p
a
ram
e
t
e
rs th
at
we
re
measu
r
ed after con
n
ecting
t
h
e so
lar
po
wer
p
l
an
ts t
o
t
h
e net
w
o
r
k ar
e sh
ow
n.
Fi
g
u
r
e 3 s
h
ow
s
10
-
m
i
nut
es ave
r
ag
e R
M
S val
u
es
of
v
o
l
t
a
ge a
f
t
e
r t
h
e
PV
p
o
w
e
r
pl
a
n
t
i
s
co
nnect
e
d
.
As ca
n
be see
n
fr
om
t
h
e Fi
g
u
r
e
3,
t
h
e l
i
m
i
t
of ±
1
0
%
o
f
rat
e
d
vol
t
a
ge
i
s
not
excee
ded
.
[6]
Fi
gu
re
2.
1
0
-m
i
nut
es a
v
era
g
e
R
M
S val
u
e
s
of
p
h
ase
v
o
l
t
a
ges
Figure
3 s
h
ows
m
easured
fre
quency a
f
ter t
h
e
PV power
pla
n
t is c
o
nnected
L1N
(
V
)
1
2000
1
1880
1
1760
1
1640
1
1520
1
1400
L2N
(
V
)
1
2000
1
1880
1
1760
1
1640
1
1520
1
1400
27
.
9
26
.
9
25.
9
24
.
9
23.
9
22.
9
21
.
9
L3N
(
V
)
1
2000
1
1840
1
1680
1
1520
1
1360
1
1200
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
088
-87
08
I
JECE Vo
l. 5
,
N
o
. 4
,
Au
gu
st 2
015
:
65
6
–
66
8
6
59
F
i
g
u
r
e
3
.
Me
as
u
r
ed
f
r
e
qu
e
n
cy a
f
te
r
th
e co
nn
e
c
tio
n of
P
V
p
o
w
e
r
p
l
a
n
t
A f
r
e
que
ncy
v
a
l
e
i
s
un
de
r t
h
e
perm
i
ssi
bl
e l
i
m
i
t
s
.
Fi
gure 4 sho
w
s
m
easure
d
harm
oni
c
di
s
t
ort
i
o
n
(t
ot
al
harm
oni
c
di
st
o
r
t
i
o
n
–
T
H
D
)
aft
e
r t
h
e P
V
p
o
we
r
pl
ant
i
s
connected. As
can be
s
een
fro
m
th
e Figu
re 5
,
th
e
v
a
lu
e
o
f
vo
ltage THD is t
h
rou
gho
u
t
th
e en
tire p
e
riod
of
measurem
ent smaller than th
e l
i
m
i
t v
a
lu
e of 2 %. It
sh
ou
l
d
b
e
no
ted
th
at th
e C
r
o
a
tian
n
a
tion
a
l grid
cod
e
is
re
ga
rdi
ng
ha
rm
oni
c di
st
o
r
t
i
on m
o
re rest
ri
ct
i
v
e t
h
an t
h
e
stan
d
a
r
d
H
R
N EN
50
160
/201
3. Th
e limit
v
a
lu
e
f
o
r
vo
lta
ge T
H
D stated in
grid c
o
de
is 2 %
whereas in
stan
d
a
r
d
EN
50
160
it is
8
%.
Fi
gu
re 4.
M
eas
ure
d
v
o
l
t
a
ge h
a
rm
oni
c
di
st
o
r
t
i
o
n
Fi
gu
re 5 s
h
ow
s vol
t
a
ge
u
nbal
a
nce d
u
ri
ng m
easure
d
w
eek
after the PV pl
ant is
connecte
d
. As can
be
seen f
r
om
t
h
e
Fi
gu
re 6
,
t
h
e r
a
nge
of m
easured
vol
t
a
ge
un
bal
a
nce i
s
0.
0
8
% - 0.
1
8
% whi
c
h i
s
wi
t
h
i
n
t
h
e
allo
wab
l
e limit
s. Based
on
the p
e
rform
e
d
p
o
w
er qu
ality
measu
r
em
en
ts
it can
b
e
co
n
c
l
u
d
e
d
th
at PV p
o
wer
plant does not distort the
power quality of supply voltage because a
ll
m
e
asure
d
power quality param
e
ters are
with
in
t
h
e lim
i
t
s th
at are im
p
o
s
ed
b
y
th
e C
r
o
a
tian
n
a
tion
a
l grid
cod
e
an
d
stan
d
a
rd HR
N
EN
50
160
/20
1
2
.
Evaluation Warning : The document was created with Spire.PDF for Python.
IJECE
ISS
N
:
2088-8708
Int
e
grat
i
o
n
of
Sol
ar P
o
w
e
r
P
l
ant
i
n
Di
st
ri
b
u
t
i
o
n
N
e
t
w
ork
(Srete Nikolovs
ki)
66
0
Fi
gu
re
5.
V
o
l
t
a
ge
un
bal
a
nc
e a
f
t
e
r t
h
e
co
n
n
ec
t
i
on
of
P
V
po
w
e
r
pl
ant
4.
RELAY PROTECTION COORDINATION
The st
udy
of the
protecti
on
s
e
ttings a
nd c
o
ordination,
seventeen
differe
n
t places and ty
pes
of
short
circuit sim
u
lation we
re
performed accordi
n
g the Croa
tian HEP DSO rec
o
mmendation. Due
to
lac
k
of space
,
in
th
is
p
a
p
e
r
on
ly th
ree cases
o
f
sho
r
t
circu
it
si
m
u
latio
n
will b
e
presen
ted
:
SC1
–
t
h
ree
phase short circu
i
t at a rem
o
te lo
catio
n
(rela
tiv
e to
th
e PV
p
o
wer
p
l
an
t)
on
t
h
e 20
k
V
feed
er
SC
2
– t
w
o
p
h
a
s
e sh
ort
ci
rcui
t
at
t
h
e 2
0
k
V
b
u
s i
n
s
ubst
a
t
i
o
n
20/
0.
4 T
S
G
u
m
iim
pex
SC
3
– si
ngl
e l
i
ne t
o
g
r
ou
n
d
s
h
o
r
t
ci
rc
ui
t
at
t
h
e
0.
4
kV
b
u
s
i
n
s
u
b
s
t
a
t
i
on
2
0
/
0.4
TS
G
u
m
i
im
pex
SC
4
– si
ngl
e l
i
ne t
o
g
r
ou
n
d
s
h
o
r
t
ci
rc
ui
t
at
t
h
e
term
inals of one
of the i
n
verters i
n
PV
pl
ant
Prot
ect
i
o
n rel
a
y
s
coor
di
nat
i
o
n was pe
rf
orm
e
d usi
n
g so
ft
w
a
re [7]
.
SC
1
– t
h
ree p
h
ase sh
ort
ci
rcui
t
at
a
rem
o
t
e
l
o
cat
i
o
n. Si
m
u
l
a
t
i
on st
art
s
at
t
i
m
e
t
= 0 and s
h
ort
ci
rcui
t
occu
rs at
t
i
m
e
t
= 100
m
s
. Ty
pe of si
m
u
l
a
t
e
d
sh
ort circu
it is b
a
lan
c
ed th
ree ph
ase
fau
lt
with
fau
lt im
p
e
d
a
n
c
e =
0
Ω
.
Th
e l
o
catio
n of fau
lt is
o
n
the 20
kV
l
i
n
e cl
ose
t
o
s
ubst
a
t
i
o
n
TS
1
10/
20
kV.
Fi
g
u
re
7
s
h
o
w
s
t
h
e R
M
S
val
u
e
s
o
f
c
u
r
r
e
n
t
s
t
hos
e i
n
ve
rt
ers
of
P
V
po
we
r
pl
ant
fe
eds i
n
t
o
t
h
e
di
st
ri
but
i
o
n
ne
twork du
ri
n
g
a short circu
it sim
u
latio
n
.
Fi
gu
re
7.
R
M
S
val
u
e
s
of c
u
rr
ent
s
du
ri
n
g
s
h
o
r
t
ci
rcui
t
si
m
u
l
a
t
i
on
fo
r case
SC
1
Di
ag
ram
on t
h
e Fi
g
u
re
6
sh
o
w
s c
u
r
r
e
n
t
o
f
one
g
r
ou
p
of
i
nve
rt
ers
(t
he
re
are t
o
t
a
l
l
y
ei
ght
g
r
ou
ps
o
f
i
nve
rt
ers i
n
P
V
po
wer
pl
a
n
t
)
at
t
h
e
po
in
t
w
h
er
e PV
po
wer
p
l
an
t is co
nn
ected
t
o
th
e netw
or
k
(0
.4
kV
sid
e
of
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
0,12
0,09
0,06
0,03
0,00
-0,03
Line3x15kW: Positive-Sequence Current, Magnitude/Terminal i in kA
0.080 s
0.055 kA
0.157 s
0.101 kA
0.212 s
0.000 kA
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
4,00
3,00
2,00
1,00
0,00
-1,00
TRF SE Gumiimpex: Positive-Sequence Current, Magnitude/LV-Side in kA
0.105 s
2.225 kA
0.010 s
1.231 kA
0.359 s
0.000 kA
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
0,0500
0,0375
0,0250
0,0125
0,0000
-0,0125
Vod - odvajanje: Positive-Sequence Current, Magnitude/Terminal i in kA
0.040 s
0.024 kA
0.105 s
0.044 kA
0.212 s
0.000 kA
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
8,00
6,00
4,00
2,00
0,00
-2,00
Vod 20 kV iz TS Varazdin: Positive-Sequence Current, Magnitude/Terminal i in kA
0.111 s
5.564 kA
struje A
Date: 9/12/2013
Annex: /3
DI
g
S
I
L
E
N
T
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
088
-87
08
I
J
ECE Vo
l. 5
,
N
o
. 4
,
Au
gu
st 2
015
:
65
6
–
66
8
6
61
t
h
e t
r
a
n
sf
orm
e
r
Gum
i
im
pex 20/
0.
4
kV
).
Th
e seco
n
d
di
ag
r
a
m
sho
w
s t
o
t
a
l
cur
r
ent
t
h
at
PV
pl
ant
fee
d
s
t
o
t
h
e
net
w
or
k at
t
h
e
0.
4 k
V
si
de
o
f
t
h
e t
r
a
n
sf
orm
e
r G
u
m
i
im
pex
20/
0.
4 k
V
. T
h
e t
h
i
r
d
di
ag
ra
m
show
s t
o
t
a
l
cur
r
ent
t
h
at
PV pl
ant
f
eeds t
o
t
h
e net
w
o
r
k at
t
h
e 2
0
kV si
de o
f
t
h
e
t
r
ansf
orm
e
r Gum
iim
pex 20/
0.
4 k
V
. A
nd t
h
e l
a
st
di
ag
ram
sho
w
s t
h
e
cu
rre
nt
at
t
h
e
begi
nni
ng
o
f
t
h
e a
ffe
ct
ed l
i
n
e
(i
n
t
h
e
1
10/
20
k
V
t
r
an
sf
orm
e
r s
t
at
i
on
Varaž
d
i
n
).
S
h
ort
-
ci
rcui
t
pr
ot
ect
i
on
(o
verc
u
rre
nt
rel
a
y
)
l
o
cat
ed at
t
h
e
be
gi
n
n
i
n
g
of t
h
e
affect
e
d
l
i
n
e
(
i
n t
h
e
sub
s
t
a
t
i
on
11
0
/
20
kV
Varaž
d
i
n
) t
r
i
p
pe
d at
t
i
m
e
t
= 115 m
s
. At
t
h
e sam
e
t
i
m
e
, short
ci
r
c
ui
t
pr
ot
ect
i
o
n
at
t
h
e
affect
ed
l
i
n
e e
nd
(
20
k
V
s
w
i
t
c
hb
oar
d
)
al
so
t
r
i
ppe
d a
n
d f
a
ul
t
e
d
20
k
V
l
i
n
e i
s
di
sc
on
n
ect
ed.
Un
der
v
o
l
t
a
g
e
pr
ot
ect
i
o
n
(
V
<
<
)
of t
h
e i
nve
rt
ers i
n
P
V
p
o
w
e
r
pl
ant
s
i
s
a
c
tiv
ated
at ti
m
e
t = 19
7 m
s
so
that PV
po
wer
p
l
an
t is
pre
v
e
n
ted to
operate as an is
olated
system
.
Ove
r
c
u
rrent protection (I>) i
n
relay located at the 20 kV s
i
de of
Gum
i
im
pex 2
0
/
0
.
4
k
V
t
r
a
n
s
f
o
r
m
e
r st
at
i
on
serve
as a
bac
k
u
p
t
o
un
de
r
vol
t
a
ge
p
r
ot
ect
i
on
o
f
t
h
e
PV
po
we
r
p
l
an
t.
Figu
r
e
8
sh
ow
s th
e si
ngle lin
e d
i
ag
ram with m
a
rke
d
breake
r
s t
h
at tri
ppe
d
.
Fi
gu
re
8.
Tri
p
p
e
d
pr
ot
ect
i
o
n
d
e
vi
ces f
o
r case
SC
1
Fi
gu
re
9
sh
o
w
s t
h
e R
M
S
val
u
es
of
vol
t
a
ge
s
at
t
h
e
t
h
ree
l
o
cat
i
ons cl
ose t
o
P
V
p
o
w
er
pl
ant
du
ri
n
g
a
sho
r
t
ci
rc
ui
t
si
m
u
l
a
t
i
on. U
p
p
e
r di
ag
ram
on
t
h
e Fi
g
u
re
8 sh
ows
v
o
l
t
a
ge at
t
h
e i
nve
rt
ers t
e
rm
i
n
al
s. The seco
nd
di
ag
ram
show
s t
h
e vol
t
a
ge a
t
t
h
e 0.4 k
V
si
de o
f
t
h
e t
r
ans
f
o
r
m
e
r Gum
iim
pex 20/
0.
4 k
V
. T
h
e l
a
st
di
agram
sh
ow
s vo
ltag
e
at th
e 20
kV
si
d
e
o
f
th
e tr
an
sfo
r
m
e
r
Gu
m
i
i
m
p
e
x 20
/0.4 kV
.
Fig
u
re 9
.
RMS
v
a
lu
es o
f
vo
ltag
e
s du
ring
short
circu
it
sim
u
latio
n
for
case SC1
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
1,20
0,90
0,60
0,30
0,00
-0,30
stezaljke izmjenjivaca: Voltage, Magnitude in p.u.
0.040 s
1.092 p.u.
0.105 s
0.115 p.u.
0.212 s
0.000 p.u.
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
1,20
0,90
0,60
0,30
0,00
-0,30
TRF SE Gumiimpex: Voltage, Magnitude/LV-Side in p.u.
0.080 s
1.080 p.u.
0.105 s
0.097 p.u.
0.212 s
0.000 p.u.
0,9989
0,7791
0,5593
0,3396
0,1198
-0,1000
[s]
1,20
0,90
0,60
0,30
0,00
-0,30
TS GUMIIMPEX3 S3SN: Voltage, Magnitude in p.u.
0.090 s
1.044 p.u.
0.105 s
0.004 p.u.
naponi
Date: 9/12/2013
Annex: /4
DIgSILENT
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
ECE
I
S
SN
:
208
8-8
7
0
8
Int
e
grat
i
o
n
of
Sol
ar P
o
w
e
r
P
l
ant
i
n
Di
st
ri
b
u
t
i
o
n
N
e
t
w
ork
(Srete Nikolovs
ki)
66
2
SC
28
– t
w
o p
h
ase sh
o
r
t
ci
rcui
t
at
t
h
e 20 k
V
b
u
s i
n
su
bst
a
t
i
on 2
0
/
0
.4 T
S
Gum
i
im
pex. Sim
u
l
a
t
i
o
n
starts at time t = 0 and s
h
ort circuit occurs
at time
t = 100
m
s
. Ty
pe of s
i
m
u
l
a
t
e
d sho
r
t
ci
rcui
t
i
s
t
w
o pha
se
faul
t
wi
t
h
faul
t
im
peda
nce
= 0
Ω
. T
h
e l
o
cat
i
on
o
f
faul
t
i
s
on
t
h
e
2
0
k
V
bus
of t
h
e t
r
an
sfo
r
m
e
r Gum
i
im
pex
20/
04
kV
(t
hi
s
t
r
ansf
orm
e
r con
n
ect
s P
V
p
o
w
er
pl
ant
wi
t
h
t
h
e net
w
o
r
k).
Fi
gu
re 1
0
sh
o
w
s t
h
e R
M
S v
a
l
u
es of
cur
r
ent
s
w
h
i
c
h i
nve
rt
ers o
f
PV po
we
r pl
ant
feeds i
n
t
o
t
h
e di
st
ri
but
i
on
net
w
or
k d
u
ri
ng a sh
ort
ci
rcui
t
sim
u
l
a
t
i
on. U
p
per
di
agram
on t
h
e Fi
g
u
re
1
0
sh
ow
s cu
rre
nt
of
one
gr
ou
p o
f
i
nve
rt
ers
at
t
h
e poi
nt
w
h
ere P
V
p
o
w
e
r
p
l
an
t is
co
nn
ected to
t
h
e
n
e
two
r
k
(
0
.4
k
V
sid
e
of
the tr
an
sfo
r
m
e
r
G
u
m
i
i
m
p
e
x
2
0
/0
.4 kV
). Th
e second
d
i
agram
sh
o
w
s to
tal cu
rren
t
th
at PV
pl
an
t
feeds t
o
t
h
e
net
w
or
k at
t
h
e 0.4
kV
side o
f
the tr
ansf
or
m
e
r
Gum
i
im
pex 20
/
0
.4
kV
. The t
h
i
r
d di
ag
ram
sho
w
s cu
rr
ent
a
t
t
h
e end (cl
o
s
e
t
o
TS Gum
i
ipex
) o
f
t
h
e 2
0
kV l
i
n
e
whi
c
h co
nnect
s subst
a
t
i
o
n G
u
m
iim
pex wi
t
h
rest
of t
h
e
di
st
ri
b
u
t
i
on sy
st
em
. The fort
h di
ag
ram
shows t
h
e
cur
r
ent
at
t
h
e b
e
gi
n
n
i
n
g o
f
t
h
e
20
kV l
i
n
e i
n
t
r
ans
f
orm
e
r st
ati
on V
a
raž
d
i
n
1
10/
20
k
V
(t
hi
s
t
r
ans
f
o
r
m
e
r st
at
i
o
n
is co
n
n
ectin
g
d
i
stribu
tio
n
sy
ste
m
with
th
e tran
sm
issi
on syste
m
). The last diag
ram
sho
w
s cu
rre
nt at the
begi
nni
ng
(at
t
h
e
op
p
o
si
t
e
l
i
n
e e
n
d
f
r
om
TS
Gum
iip
ex
) of the
2
0
kV lin
e wh
ich conn
ects su
bstation
Gum
i
im
pex wi
t
h
rest
o
f
t
h
e
di
st
ri
but
i
o
n
sy
st
em
.
Fi
gu
re
1
0
. R
M
S val
u
es
of
cu
r
r
ent
s
d
u
ri
ng
sh
ort
ci
rc
ui
t
si
m
u
l
a
t
i
on f
o
r
case
SC
2
Sh
ort
-
ci
rcui
t
p
r
ot
ect
i
o
n (i
nst
a
nt
ane
o
us ov
er
cu
rr
en
t r
e
lay)
located at the be
ginning (oppos
ite from
TS
Gum
i
im
pex) o
f
t
h
e
20
kV l
i
n
e whi
c
h co
n
n
e
c
t
s
TS G
u
m
iim
pex 20/
0
4
k
V
wi
t
h
rest
o
f
t
h
e di
st
ri
b
u
t
i
o
n
sy
st
em
t
r
i
ppe
d at
t
i
m
e
t
= 110 m
s
.
Th
us, 2
0
kV
bus
es i
n
TS G
u
m
iim
pex (fa
u
l
t
l
o
cat
i
on) are
separat
e
d fr
o
m
t
h
e
net
w
or
k.
At
t
h
e t
i
m
e
t
= 1
1
4
m
s
, overc
ur
re
n
t
pr
ot
ect
i
o
n
i
n
TS
Gum
i
im
pex
20/
0.
4
k
V
t
r
i
ppe
d
ci
rcui
t
br
eakers
on
20
kV si
de
of t
h
e t
r
a
n
sf
o
r
m
e
r and t
hus
di
sco
nnect
e
d
t
h
e PV p
o
w
er
pl
ant
.
Fast
o
v
e
rv
ol
t
a
ge p
r
ot
ect
i
o
n
(V>>)
o
f
inv
e
rters tripp
e
d
at t
h
e tim
e t = 2
08 m
s
.
Fig
u
r
e
1
1
show
s th
e RMS
valu
es of
v
o
ltages at th
e
th
ree
lo
catio
n
s
cl
o
s
e to
PV power
p
l
an
t
d
u
ring
a
sh
or
t cir
c
u
it sim
u
la
tio
n
.
U
pper
d
i
ag
r
a
m
o
n
t
h
e Figur
e 11
s
h
ows
voltage a
t
the inve
rters t
e
rm
inals. The
second
di
ag
ram
show
s t
h
e vol
t
a
ge a
t
t
h
e 0.4 k
V
si
de o
f
t
h
e t
r
ans
f
o
r
m
e
r Gum
iim
pex 20/
0.
4 k
V
. T
h
e l
a
st
di
agram
sh
ow
s vo
ltag
e
at th
e 20
kV
si
d
e
o
f
th
e tr
an
sfo
r
m
e
r
Gu
m
i
i
m
p
e
x 20
/0.4 kV
.
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
0,08
0,06
0,04
0,02
-0,00
-0,02
Line3x15kW: Positive-Sequence Current, Magnitude/Terminal i in kA
0.030 s
0.055 kA
0.114 s
0.076 kA
0.387 s
0.000 kA
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
2,00
1,50
1,00
0,50
0,00
-0,50
TRF SE Gumiimpex: Positive-Sequence Current, Magnitude/LV-Side in kA
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
2,00
1,50
1,00
0,50
0,00
-0,50
Vod - odvajanje: Positive-Sequence Current, Magnitude/Terminal i in kA
0.110 s
1.800 kA
0.020 s
0.024 kA
0.337 s
0.000 kA
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
2,00
1,50
1,00
0,50
0,00
-0,50
Vod 20 kV iz TS Varazdin VP TZ Trnovec: Positive-Sequence Current, Magnitude/Terminal i in kA
0.030 s
0.028 kA
0.110 s
1.812 kA
0.427 s
0.052 kA
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
2,00
1,50
1,00
0,50
0,00
-0,50
VP PZ Trnovec 1: Positive-Sequence Current, Magnitude/Terminal i in kA
0.050 s
0.013 kA
0.110 s
1.810 kA
0.337 s
0.037 kA
struje A
Date: 9/13/2013
Annex: /3
DI
gS
I
L
E
N
T
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
088
-87
08
I
J
ECE Vo
l. 5
,
N
o
. 4
,
Au
gu
st 2
015
:
65
6
–
66
8
6
63
Fi
gu
re
1
1
. R
M
S val
u
es
of
v
o
l
t
ages
du
ri
n
g
s
h
ort
ci
rc
ui
t
si
m
u
l
a
t
i
on f
o
r
case
SC
8
Fi
gu
re
1
2
.
Si
n
g
l
e
l
i
n
e
di
ag
ra
m
wi
t
h
t
r
i
ppe
d
brea
ker
s
f
o
r ca
se SC
2
SC
3
– si
ngl
e l
i
ne t
o
gr
o
u
nd
sho
r
t
ci
rc
ui
t
at
t
h
e
0.
4
kV
b
u
s i
n
s
ubst
a
t
i
o
n
20/
0.
4 TS
G
u
m
iim
pex
.
Sim
u
l
a
t
i
on st
ar
t
s
at
t
i
m
e
t
= 0 and s
h
ort
ci
rc
ui
t
occu
rs at
t
i
m
e t
= 100 m
s
. Ty
pe
of si
m
u
l
a
t
e
d sh
ort
ci
rc
ui
t
i
s
sin
g
l
e lin
e to
g
r
ou
nd
fau
lt with
fau
lt i
m
p
e
d
a
n
ce = 0
Ω
.
The l
o
cat
i
on
of fa
ul
t
i
s
on t
h
e 0.
4 k
V
b
u
s
of t
h
e
t
r
ans
f
o
r
m
e
r Gum
iim
pex 20/
04
kV
(t
hi
s t
r
a
n
sf
orm
e
r con
n
ect
s PV p
o
we
r
pl
ant
wi
t
h
t
h
e
net
w
o
r
k).
Fi
g
u
re
13
sho
w
s t
h
e R
M
S val
u
es
of c
u
rre
nt
s w
h
i
c
h i
nve
rt
ers
of P
V
po
wer
pl
ant
f
eeds i
n
t
o
t
h
e
di
st
ri
b
u
t
i
on
ne
t
w
o
r
k
du
ri
n
g
a
sh
o
r
t
ci
rcui
t
si
m
u
l
a
t
i
on
.
Up
pe
r
di
ag
ram
on t
h
e
Fi
g
u
re
1
3
s
h
ows
c
u
r
r
ent
o
f
one
g
r
o
u
p
of i
nve
rt
e
r
s at
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
2,00
1,50
1,00
0,50
0,00
-0,50
stezaljke izmjenjivaca: Line-Ground Positive-Sequence Voltage, Magnitude in p.u.
0.090 s
1.092 p.u.
0.138 s
1.690 p.u.
0.200 s
1.707 p.u.
0.247 s
0.000 p.u.
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
2,00
1,50
1,00
0,50
0,00
-0,50
TRF SE Gumiimpex: Line-Ground Positive-Sequence Voltage, Magnitude/LV-Side in p.u.
0.090 s
1.080 p.u.
0.158 s
1.696 p.u.
0.205 s
1.715 p.u.
0,9968
0,7774
0,5581
0,3387
0,1194
-0,1000
[s]
1,125
1,000
0,875
0,750
0,625
0,500
TS GUMIIMPEX3 S3SN: Line-Ground Positive-Sequence Voltage, Magnitude in p.u.
0.070 s
1.044 p.u.
0.110 s
0.573 p.u.
0.297 s
1.042 p.u.
naponi
Date: 9/13/2013
Annex: /4
DIg
S
IL
E
N
T
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
ECE
I
S
SN
:
208
8-8
7
0
8
Int
e
grat
i
o
n
of
Sol
ar P
o
w
e
r
P
l
ant
i
n
Di
st
ri
b
u
t
i
o
n
N
e
t
w
ork
(Srete Nikolovs
ki)
66
4
th
e po
in
t wh
ere PV
p
o
wer
plan
t is
con
n
ect
ed t
o
t
h
e
net
w
or
k (
0
.
4
kV si
de o
f
t
h
e t
r
a
n
s
f
o
r
m
e
r Gum
i
im
pex
20/
0.
4 k
V
)
.
T
h
e seco
n
d
di
a
g
ram
show
s cur
r
ent
t
h
at
i
s
f
l
owi
n
g f
r
om
the net
w
o
r
k at
t
h
e 0.
4 k
V
si
d
e
of t
h
e
t
r
ans
f
o
r
m
e
r Gum
iim
pex 2
0
/
0
.4
kV
. T
h
e t
h
i
r
d
di
agram
sh
ows cu
rren
t t
h
at is flowing
from
th
e n
e
two
r
k at th
e
20
k
V
si
de
of
t
h
e t
r
a
n
s
f
o
r
m
e
r Gum
i
im
pex 20
/
0
.4
k
V
.
A
n
d t
h
e l
a
st
di
agram
sh
ow
s t
h
e
cu
rr
ent
at
t
h
e
be
gi
n
n
i
n
g
o
f
th
e
20
k
V
lin
e in th
e
11
0
/
20
k
V
tran
sfo
r
m
e
r statio
n Varažd
in
.
Fi
gu
re
1
3
. R
M
S val
u
es
of
cu
r
r
ent
s
d
u
ri
ng
sh
ort
ci
rc
ui
t
si
m
u
l
a
t
i
on f
o
r
case
SC
3
Inst
a
n
t
a
ne
ou
s
eart
h
-
f
a
u
l
t
pr
ot
ect
i
on (
r
el
ay
M
i
crol
o
g
i
c
6
,
I
0
>>=1200 A) l
o
cated at
the LV
side of
the
TS G
u
m
iim
pex t
r
i
p
ped at
t
i
m
e t = 113 m
s
. Th
us, P
V
p
o
w
er
pl
ant
i
s
di
sco
nnect
e
d
fr
o
m
t
h
e net
w
or
k
.
At
t
h
e
t
i
m
e
t
= 20
4 m
s
, fast
o
v
er
v
o
l
t
a
ge
pr
ot
ect
i
o
n
(V>>
)
of
i
n
ver
t
ers t
r
i
p
pe
d.
Fi
gu
re
1
4
.
Si
n
g
l
e
l
i
n
e
di
ag
ra
m
wi
t
h
t
r
i
ppe
d
brea
ker
s
f
o
r ca
se SC
3
0,9931
0,7745
0,5558
0,3372
0,1186
-0,1000
[s]
0,100
0,075
0,050
0,025
0,000
-0,025
Line3x15kW: Positive-Sequence Current, Magnitude/Terminal i in kA
0.133 s
0.086 kA
0.233 s
0.000 kA
0,9931
0,7745
0,5558
0,3372
0,1186
-0,1000
[s]
12,00
9,00
6,00
3,00
0,00
-3,00
TRF SE Gumiimpex: Positive-Sequence Current, Magnitude/LV-Side in kA
0.112 s
8.204 kA
0.050 s
1.231 kA
0.204 s
0.003 kA
0,9931
0,7745
0,5558
0,3372
0,1186
-0,1000
[s]
0,40
0,30
0,20
0,10
0,00
-0,10
Vod - odvajanje: Positive-Sequence Current, Magnitude/Terminal i in kA
0.010 s
0.024 kA
0.110 s
0.159 kA
0.253 s
0.000 kA
0,9931
0,7745
0,5558
0,3372
0,1186
-0,1000
[s]
0,40
0,30
0,20
0,10
-0,00
-0,10
Vod 20 kV iz TS Varazdin VP TZ Trnovec: Positive-Sequence Current, Magnitude/Terminal i in kA
0.070 s
0.028 kA
0.111 s
0.195 kA
0.273 s
0.052 kA
struje A
Date: 9/16/2013
Annex: /3
DIg
S
IL
E
N
T
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
SN
:
2
088
-87
08
I
J
ECE Vo
l. 5
,
N
o
. 4
,
Au
gu
st 2
015
:
65
6
–
66
8
6
65
SC4
–
sing
le
lin
e to
gro
und sho
r
t cir
c
u
it
at th
e ter
m
in
a
l
s o
f
on
e
o
f
t
h
e inv
e
r
t
er
s i
n
PV
p
l
an
t
Sim
u
l
a
t
i
on st
ar
t
s
at
t
i
m
e
t
= 0 and s
h
ort
ci
rc
ui
t
occu
rs at
t
i
m
e t
= 100 m
s
. Ty
pe
of si
m
u
l
a
t
e
d sh
ort
ci
rc
ui
t
i
s
sin
g
l
e lin
e t
o
g
r
ou
nd
fau
lt with
fau
lt im
p
e
dan
ce R
f
=
0
Ω
. Th
e l
o
catio
n
o
f
fau
lt is at term
in
al o
f
on
e
o
f
t
h
e
in
v
e
r
t
er
s. Figur
e
1
5
show
s t
h
e RMS
v
a
lu
es of
cu
rr
en
ts
wh
ich
inv
e
rters of PV
po
wer
p
l
an
t feed
s in
to
t
h
e
u
tility n
e
two
r
k du
ring
a short circu
it sim
u
la
tio
n
.
Up
p
e
r d
i
ag
ram
o
n
t
h
e Fig
u
re 1
6
shows
cu
rren
t o
f
fau
lted
i
nve
rt
er. T
h
e
seco
nd
di
ag
ra
m
shows t
h
e
cur
r
ent
of
one
sel
ect
ed i
nve
r
t
er fr
om
t
h
e gro
u
p
t
h
at
bel
o
ngs t
o
faulted inverter (affected group).
Fi
gu
re
1
5
. R
M
S val
u
es
of
cu
r
r
ent
s
d
u
ri
ng
sh
ort
ci
rc
ui
t
si
m
u
l
a
t
i
on f
o
r
case
4
At
t
h
e t
i
m
e
t
=
11
0 m
s
, fast
overcu
rre
nt
pr
ot
e
c
t
i
on (I>>
)
o
f
affect
ed
gr
o
up
t
r
i
ppe
d.
At
t
h
e sam
e
t
i
m
e
,
au
to
m
a
tic fu
ses of all inv
e
rters in
t
h
e affected
g
r
ou
p tripp
e
d
thu
s
th
is
g
r
ou
p is
d
i
scon
n
e
cted
.
Fig
u
re
16
sh
ows the RMS
valu
es
o
f
vo
ltages du
ri
n
g
a short circu
it sim
u
latio
n
.
Up
p
e
r
d
i
ag
ram
o
n
th
e
Fig
u
re
17
shows
vo
ltag
e
at t
h
e
fau
lted inv
e
rter term
in
als. The second diagram
show
s voltag
e
at th
e termin
als
of t
h
e af
fect
ed
gr
ou
p o
f
i
n
v
e
r
t
ers. The t
h
i
r
d
di
ag
ram
shows
t
h
e vol
t
a
ge at
t
h
e 0.
4 k
V
si
d
e
of t
h
e t
r
a
n
sf
orm
e
r
Gum
i
im
pex 2
0
/
0
.
4
k
V
. T
h
e
l
a
st
di
agram
sho
w
s
v
o
l
t
a
ge
at
t
h
e 2
0
kV
si
de o
f
t
h
e
t
r
a
n
sf
orm
e
r G
u
m
i
im
pex
20/
0.
4 kV
.
0,998
8
0,7790
0,5593
0,3395
0,1198
-0,1000
[s]
0,175
0,173
0,171
0,169
0,167
0,165
vod R2-2 - S2nn: Positive-Sequence Current, Magnitude/Terminal i in kA
0.050 s
0.167 kA
0.110 s
0.172 kA
0.286 s
0.167 kA
0,998
8
0,7790
0,5593
0,3395
0,1198
-0,1000
[s]
0,16
0,12
0,08
0,04
-0,00
-0,04
1 izmjenjivac spojen na R1 -S1nn: Zero-Sequence Current, Magnitude in kA
0.060 s
0.000 kA
0.108 s
0.143 kA
0.356 s
0.000 kA
0,998
8
0,7790
0,5593
0,3395
0,1198
-0,1000
[s]
0,026
0,023
0,020
0,017
0,014
0,011
Vod - odvajanje: Positive-Sequence Current, Magnitude/Terminal i in kA
0.050 s
0.024 kA
0.111 s
0.012 kA
0.396 s
0.023 kA
0,998
8
0,7790
0,5593
0,3395
0,1198
-0,1000
[s]
1,00
0,75
0,50
0,25
0,00
-0,25
Line3x15kW: Positive-Sequence Current, Magnitude/Terminal i in kA
0.040 s
0.055 kA
0.110 s
0.785 kA
0.266 s
0.000 kA
0,998
8
0,7790
0,5593
0,3395
0,1198
-0,1000
[s]
0,16
0,12
0,08
0,04
-0,00
-0,04
vod od 1 izmjenjivaca na R1 -S1nn: Zero-Sequence Current, Magnitude/Terminal i in kA
0.020 s
0.000 kA
0.108 s
0.126 kA
0.426 s
0.000 kA
Struje B
Date: 9/17/2013
Annex: /4
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