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u
r
r
en
t
li
m
i
ter
b
ased
o
n
a
h
i
g
h
te
m
p
er
atu
r
e
s
u
p
er
co
n
d
u
cto
r
ca
n
b
e
an
alter
n
ati
v
e
to
r
ep
lace
th
e
af
o
r
e
m
en
t
io
n
ed
co
n
v
e
n
tio
n
al
d
ev
ices.
I
n
o
t
h
er
w
a
y
w
e
ca
n
s
a
y
,
t
h
e
s
u
p
er
co
n
d
u
cti
n
g
f
a
u
lt
c
u
r
r
en
t
li
m
iter
(
SF
C
L
)
ca
n
i
m
p
r
o
v
e
th
e
tr
an
s
ie
n
t
s
tab
ilit
y
o
f
th
e
p
o
w
er
s
y
s
te
m
b
y
s
u
p
p
r
ess
i
n
g
th
e
lev
el
o
f
f
au
lt c
u
r
r
en
ts
in
a
f
a
s
t a
n
d
ef
f
ec
t
iv
e
m
an
n
er
.
I
n
t
h
e
p
ast t
w
o
d
ec
ad
es,
m
a
n
y
s
t
u
d
ies o
n
th
e
ap
p
licatio
n
o
f
h
i
g
h
-
te
m
p
er
atu
r
e
SF
C
L
s
to
elec
tr
ic
p
o
w
er
s
y
s
te
m
s
h
a
v
e
b
ee
n
ca
r
r
ied
o
u
t
[
9
]
–
[
1
1
]
,
an
d
v
ar
io
u
s
t
y
p
es
o
f
SF
C
L
s
h
av
e
b
ee
n
d
es
ig
n
ed
u
n
til
n
o
w
.
Mo
r
e
o
v
er
,
th
e
SF
C
L
w
i
th
g
o
o
d
p
er
f
o
r
m
a
n
ce
is
cu
r
r
en
tl
y
b
ei
n
g
m
ad
e
in
in
d
u
s
tr
y
.
T
h
e
n
ex
t
s
tep
is
to
ap
p
ly
t
h
e
d
ev
elo
p
ed
SF
C
L
to
p
o
w
er
s
y
s
te
m
s
f
o
r
p
r
ac
tical
u
s
e.
Fo
r
th
is
g
o
al,
th
e
f
o
llo
w
in
g
t
h
r
ee
i
m
p
o
r
tan
t
f
a
cto
r
s
m
u
s
t b
e
co
n
s
id
er
ed
:
i.
Op
ti
m
al
p
lace
to
in
s
tall t
h
e
SF
C
L
.
ii.
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ti
m
al
r
esi
s
ti
v
e
v
al
u
e
o
f
th
e
SF
C
L
co
n
n
ec
ted
in
s
er
ies
w
it
h
a
tr
an
s
m
is
s
io
n
li
n
e
d
u
r
in
g
a
s
h
o
r
t
-
cir
cu
it f
a
u
lt.
iii.
P
o
ten
tial
p
r
o
tectio
n
-
co
o
r
d
in
atio
n
p
r
o
b
lem
w
it
h
o
th
er
ex
is
t
i
n
g
p
r
o
tectiv
e
d
ev
ices
s
u
ch
as
a
r
ec
lo
s
er
an
d
a
cir
cu
it b
r
ea
k
er
.
T
h
is
p
ap
er
f
o
c
u
s
es
o
n
f
ac
to
r
(
ii)
f
o
r
th
e
r
esis
tiv
e
-
t
y
p
e
SF
C
L
,
w
h
ich
is
u
s
e
f
u
l
to
im
p
r
o
v
e
th
e
r
eliab
ilit
y
o
f
t
h
e
s
y
s
te
m
[
1
2
]
,
w
ith
t
h
e
tr
an
s
ie
n
t
s
tab
ilit
y
s
tu
d
y
b
ased
o
n
th
e
eq
u
a
l
-
ar
ea
cr
iter
io
n
[
1
3
]
.
I
n
ad
d
itio
n
,
th
e
p
er
f
o
r
m
an
ce
s
o
f
th
e
p
r
o
p
o
s
ed
SF
C
L
to
r
ed
u
ce
t
h
e
lev
e
l
o
f
f
au
lt
c
u
r
r
en
ts
ar
e
ev
alu
ated
w
i
t
h
s
i
m
u
lat
io
n
M
A
T
L
A
B
s
o
f
t
w
ar
e.
Fin
all
y
,
t
h
is
p
ap
er
m
a
k
e
s
a
n
e
w
co
n
tr
ib
u
tio
n
b
y
d
eter
m
i
n
in
g
t
h
e
o
p
ti
m
al
r
esis
ti
v
e
v
a
lu
e
o
f
th
e
SF
C
L
b
ased
o
n
th
e
s
y
s
te
m
atic
ap
p
r
o
ac
h
b
y
t
h
e
eq
u
al
-
ar
ea
cr
iter
io
n
w
h
e
n
co
m
p
ar
ed
to
th
e
p
r
ev
io
u
s
w
o
r
k
[
1
4
]
b
y
i
n
tr
o
d
u
cin
g
t
h
e
s
i
m
p
le
co
n
ce
p
t
o
f
SF
C
L
w
it
h
it
s
eq
u
iv
al
en
t
cir
c
u
it.
Fi
n
all
y
,
th
e
s
i
m
u
latio
n
r
esu
l
ts
to
s
h
o
w
th
e
ef
f
ec
ti
v
en
e
s
s
o
f
t
h
e
p
r
o
p
o
s
ed
SF
C
L
w
it
h
th
e
ap
p
r
o
p
r
iate
p
ar
am
ete
r
.
2.
P
O
WE
R
SY
ST
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M
M
O
DE
L
A
co
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n
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Fig
u
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1
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m
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n
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t
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an
d
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tio
n
4
(
T
h
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ee
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p
h
ase
s
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ce
at
th
e
en
d
)
.
Usu
all
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,
co
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v
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t
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n
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r
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ase
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3.
RE
S
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ST
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V
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SFC
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M
O
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L
T
h
e
th
r
ee
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ase
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ti
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t
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C
L
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eter
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e
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C
L
.
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h
e
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am
eter
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n
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v
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es a
r
e:
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)
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,
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.
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r
r
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Fig
u
r
e
3
s
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cted
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n
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er
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k
m
o
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el
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icted
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Fig
u
r
e
1
.
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C
L
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as
b
ee
n
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ted
at
s
u
b
s
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n
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o
ca
tio
n
1
)
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d
f
o
r
a
d
is
tr
ib
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n
g
r
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f
a
u
lt
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lt
1
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v
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u
s
SF
C
L
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m
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ce
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e
s
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er
s
u
s
it
s
f
a
u
l
t
cu
r
r
en
t
r
ed
u
ctio
n
o
p
er
atio
n
h
as
b
ee
n
p
lo
tted
.
Ma
x
i
m
u
m
f
au
lt c
u
r
r
en
t (
No
SF
C
L
ca
s
e)
is
7
5
0
0
A
at
2
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te
m
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atter
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.
Evaluation Warning : The document was created with Spire.PDF for Python.