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In
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C
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:
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m
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k
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co
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I
NT
RO
D
UCT
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.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
J
E
C
E
I
SS
N:
2
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8
8
-
8708
R
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2578
2.
L
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th
e
u
s
e
o
f
n
o
n
li
n
ea
r
lo
ad
s
an
d
h
en
ce
h
a
r
m
o
n
ic
in
cr
ea
s
es
in
p
o
w
er
s
y
s
te
m
.
T
h
en
h
e
s
t
u
d
i
ed
w
h
ic
h
t
y
p
e
s
o
f
lo
ad
ca
u
s
es
h
ar
m
o
n
ics
c
u
r
r
en
t
a
n
d
h
e
ca
m
e
to
k
n
o
w
t
h
e
co
n
clu
s
io
n
t
h
at
it
’
s
v
er
y
s
er
io
u
s
i
s
s
u
e
to
r
eso
lv
e
th
e
m
atter
.
Fo
r
b
etter
p
er
f
o
r
m
an
ce
i
n
d
u
s
tr
ies
n
ee
d
to
u
s
e
o
f
al
l
t
y
p
e
o
f
s
tatic
co
n
v
er
ter
s
,
b
u
t
s
t
il
l
th
er
e
is
p
r
o
b
lem
s
to
co
n
tr
o
l
th
e
h
ar
m
o
n
ics
a
n
d
r
ea
ctiv
e
p
o
w
er
.
So
I
E
E
E
5
1
9
-
1
9
9
2
p
r
o
v
id
es
th
e
ap
p
licatio
n
g
u
id
e,
li
m
ita
tio
n
s
o
f
d
is
t
u
r
b
an
ce
s
a
n
d
ef
f
ec
t o
n
t
h
e
o
th
er
eq
u
ip
m
e
n
t a
r
e
r
ec
o
m
m
en
d
ed
.
Au
t
h
o
r
W
.
Ma
ck
Gr
ad
y
a
n
d
R
o
b
er
t
J
Gil
les
k
ie
s
tar
ted
in
th
eir
p
ap
er
“
Har
m
o
n
ics
a
n
d
h
o
w
t
h
e
y
r
elate
p
o
w
er
f
ac
to
r
”
th
at
m
e
n
t
io
n
ed
in
h
ar
m
o
n
ics
w
h
ich
o
cc
u
r
s
i
n
p
o
w
er
s
y
s
te
m
d
u
e
to
n
o
n
li
n
ea
r
lo
ad
p
r
esen
t
in
th
e
i
n
d
u
s
tr
ies
i
s
r
elate
d
w
it
h
t
h
e
p
o
w
er
f
ac
to
r
.
T
h
ey
s
tar
t
ed
th
at
h
o
w
is
t
h
e
p
o
w
er
f
ac
t
o
r
in
th
e
s
i
n
u
s
o
id
al
co
n
d
itio
n
s
as
w
e
ll
in
n
o
n
s
i
n
u
s
o
id
al
co
n
d
itio
n
s
.
T
h
e
y
m
e
n
ti
o
n
th
e
ex
a
m
p
le
o
f
li
n
ea
r
an
d
n
o
n
li
n
ea
r
lo
ad
s
an
d
co
n
clu
d
e
th
a
t
h
ar
m
o
n
ics
a
n
d
p
o
w
er
f
ac
to
r
ar
e
co
-
r
elate
d
w
it
h
ea
ch
o
th
e
r
li
k
e
lif
e
a
n
d
b
r
ea
th
.
I
f
h
ar
m
o
n
ic
s
ar
e
p
r
esen
t in
t
h
e
s
y
s
te
m
t
h
e
n
n
o
o
n
e
ca
n
m
e
n
tio
n
ed
th
e
u
n
i
t
y
p
o
w
er
f
ac
to
r
an
d
h
e
n
ce
t
h
e
lo
s
s
es o
f
ac
tiv
e
p
o
w
er
.
3.
RE
AS
E
ARCH
M
E
T
H
O
DO
L
O
G
Y
O
F
P
O
WE
R
F
A
C
T
O
R
AND
H
A
RM
O
NIC
DIS
T
O
RT
I
O
N
L
E
V
E
L
P
o
w
er
f
ac
to
r
lo
ad
v
ar
ies
f
r
o
m
-
1
-
0
+1
.
T
h
e
R
e
s
is
t
iv
e
lo
ad
s
lik
e
b
u
lb
s
,
h
ea
ter
s
etc
tak
e
cu
r
r
en
t
a
t
u
n
i
t
y
p
o
w
er
f
ac
to
r
(
i.e
.
1
)
.
Oth
er
lo
ad
s
lik
e
e
lectr
ic
m
o
to
r
s
,
co
m
p
u
ter
s
,
I
n
v
er
ter
,
UP
S
s
y
s
te
m
s
,
tu
b
e
li
g
h
ts
etc
tak
e
cu
r
r
en
t
at
p
o
w
er
f
ac
to
r
s
w
h
ic
h
ar
e
less
th
a
n
1
.
E
lectr
i
ca
l
P
o
w
er
=
O
n
e
u
n
it
o
f
elec
tr
i
cit
y
=
1
Kilo
w
att
x
1
Hr
.
I
f
w
e
u
s
e
1
KW
f
o
r
1
h
o
u
r
th
en
t
h
e
u
tili
t
y
m
eter
ad
v
an
ce
s
b
y
1
u
n
i
t.
I
t
is
clea
r
f
r
o
m
ab
o
v
e
t
h
at
i
f
p
o
w
er
f
ac
to
r
is
lo
w
,
u
tili
t
y
co
m
p
a
n
y
elec
tr
icit
y
b
o
ar
d
h
as
t
o
s
u
p
p
l
y
u
s
m
o
r
e
c
u
r
r
en
t
w
h
ile
d
eli
v
er
i
n
g
s
a
m
e
p
o
w
er
b
u
t
g
ets
s
a
m
e
r
ev
en
u
e
f
r
o
m
u
s
.
No
n
lin
ea
r
lo
ad
s
lik
e
co
m
p
u
ter
,
VFDs
,
UP
S,
I
n
v
er
ter
,
r
ec
tif
i
er
s
,
B
atter
y
ch
ar
g
er
s
tak
e
n
o
n
s
i
n
u
s
o
id
al
cu
r
r
en
t
w
a
v
ef
o
r
m
w
h
ile
s
i
n
u
s
o
id
al
v
o
ltag
e
w
a
v
e
f
o
r
m
is
ap
p
lied
t
o
th
e
m
.
Ma
th
e
m
atica
ll
y
it
i
s
p
r
o
v
ed
t
h
at
t
h
e
s
e
n
o
n
-
s
i
n
u
s
o
id
al
c
u
r
r
en
ts
ar
e
m
ad
e
u
p
o
f
s
i
n
u
s
o
id
al
cu
r
r
en
t
s
h
av
i
n
g
f
r
eq
u
en
c
ies
w
h
ic
h
ar
e
in
te
g
r
al
m
u
l
tip
les
o
f
f
u
n
d
a
m
en
tal
f
r
e
q
u
e
n
c
y
i.e
.
5
0
Hz.
T
h
ese
(
3
r
d
=
1
5
0
Hz,
5
th
=
2
5
0
Hz,
7
th
=
3
5
0
Hz
etc)
c
u
r
r
en
ts
ca
u
s
e
o
v
er
h
ea
ti
n
g
o
f
tr
an
s
f
o
r
m
er
s
,
ca
b
les,
s
w
itc
h
g
e
ar
s
etc.
b
ec
au
s
e
o
f
in
cr
ea
s
ed
th
e
lo
s
s
e
s
r
eq
u
ir
in
g
th
eir
d
er
atin
g
f
o
r
n
o
r
m
a
l
o
p
er
atio
n
.
T
h
is
ca
n
f
u
r
t
h
er
ca
u
s
e
h
ar
m
o
n
ic
cu
r
r
en
ts
i
n
l
in
ea
r
lo
ad
s
.
T
h
is
ca
u
s
e
s
i
n
cr
ea
s
ed
lo
s
s
es,
v
ib
r
atio
n
s
an
d
o
v
er
h
ea
tin
g
i
n
elec
tr
ica
l
m
o
to
r
s
,
m
al
f
u
n
ct
io
n
i
n
g
o
f
elec
tr
o
n
ic
co
n
tr
o
ls
d
u
e
to
g
en
er
ated
elec
tr
o
m
ag
n
etic
n
o
is
e,
Un
w
a
n
ted
er
r
atic
tr
ip
p
in
g
o
f
s
w
itc
h
g
ea
r
s
d
u
e
t
o
o
v
er
h
ea
ti
n
g
/
o
v
er
lo
ad
in
g
etc.
I
n
elec
tr
ical
d
is
tr
ib
u
tio
n
s
c
h
e
m
e,
h
a
v
i
n
g
p
r
esen
ce
o
f
h
ar
m
o
n
ic
cu
r
r
en
ts
,
a
n
d
o
n
l
y
ca
p
ac
i
to
r
s
ca
n
b
e
i
m
p
r
o
v
e
t
h
e
s
y
s
te
m
p
o
w
er
f
ac
to
r
.
T
h
er
e
is
a
p
o
s
s
ib
ilit
y
o
f
a
m
p
li
f
icatio
n
o
f
th
e
s
e
h
ar
m
o
n
i
cs
d
u
e
to
r
eso
n
a
n
ce
cr
ea
ted
b
y
tr
an
s
f
o
r
m
er
i
n
d
u
ctan
ce
a
n
d
th
e
s
e
ca
p
ac
ito
r
s
.
T
h
is
s
h
o
u
ld
b
e
av
o
id
ed
b
y
u
s
i
n
g
d
o
u
b
le
t
u
n
e
d
r
ea
cto
r
s
L
-
C
f
ilter
s
o
r
h
ar
m
o
n
ic
f
ilter
s
in
p
lace
o
f
ca
p
ac
ito
r
s
.
Utilit
y
/
E
lectr
icit
y
d
is
tr
ib
u
t
i
o
n
co
m
p
an
ie
s
also
m
ak
e
it
m
an
d
ato
r
y
f
o
r
co
n
s
u
m
er
to
co
n
tr
o
l
h
ar
m
o
n
ics
g
e
n
er
ated
b
y
h
i
s
lo
ad
a
s
it
i
m
p
r
o
v
es
t
h
eir
r
e
v
en
u
e
p
o
ten
tial
b
y
a
v
o
id
in
g
d
er
atin
g
.
A
cti
v
e
Har
m
o
n
ic
f
il
ter
s
a
ls
o
an
o
t
h
er
s
o
lu
tio
n
to
s
u
p
p
r
ess
an
d
m
ai
n
tai
n
h
ar
m
o
n
ics
le
v
el.
T
h
ese
A
HF
ar
e
s
p
ec
iall
y
d
esi
g
n
ed
p
o
w
er
elec
tr
o
n
ic
cir
cu
it
s
,
w
h
ic
h
ta
k
e
an
ti
p
h
ase
c
u
r
r
en
t
f
r
o
m
s
o
u
r
ce
w
h
ic
h
is
eq
u
a
l a
n
d
o
p
p
o
s
i
te
o
f
n
o
n
li
n
ea
r
co
m
p
o
n
en
t o
f
lo
ad
cu
r
r
en
t.
4.
AUTHE
R’
S CO
NT
R
I
B
UT
I
O
N
O
N
ANALYS
I
S I
N
E
L
E
CT
RI
CAL H
ARM
O
NIC ST
UDY
I
t
w
a
s
b
ee
n
s
tar
ted
w
it
h
t
h
e
s
t
u
d
y
a
n
d
u
n
d
er
s
ta
n
d
th
e
in
s
tall
ed
A
cti
v
e
Har
m
o
n
ic
Fil
ter
(
AHF)
p
an
el
at
M/s
L
u
p
in
L
td
.
B
io
tech
Div
is
io
n
,
P
u
n
e.
T
h
e
n
it
w
as
b
ee
n
ch
ec
k
ed
th
e
elec
tr
icit
y
b
i
ll
b
ef
o
r
e
an
d
af
ter
in
s
ta
lled
th
e
A
HF
p
an
el
a
n
d
s
t
u
d
y
.
I
t
w
a
s
f
o
u
n
d
th
a
t
b
ef
o
r
e
in
s
tal
led
h
ar
m
o
n
ic
f
il
ter
M/s
L
u
p
in
h
ad
p
en
alize
d
b
ec
au
s
e
o
f
e
x
ce
s
s
iv
e
u
s
e
o
f
r
e
q
u
ir
ed
lo
ad
as
co
m
p
ar
e
to
s
a
n
ctio
n
(
Ma
x
i
m
u
m
d
e
m
a
n
d
)
lo
ad
.
T
h
en
it
w
a
s
b
ee
n
s
tu
d
ied
a
n
d
u
n
d
er
s
to
o
d
th
e
co
m
p
lete
elec
tr
ical
d
is
tr
ib
u
tio
n
s
ch
e
m
e
an
d
s
i
n
g
le
li
n
e
d
ia
g
r
am
o
f
t
h
e
p
la
n
t.
A
l
s
o
it
w
a
s
b
ee
n
c
h
ec
k
ed
t
h
e
cu
r
r
e
n
t
h
ar
m
o
n
ic
s
b
ef
o
r
e
in
s
talled
A
H
F
p
an
el
as
p
er
I
E
E
5
1
9
1
9
9
2
s
tan
d
ar
d
.
T
h
en
r
ea
ctiv
e
p
o
w
er
co
m
p
en
s
a
tio
n
w
a
s
b
ee
n
s
t
u
d
ied
an
d
m
ad
e
s
o
m
e
co
m
m
en
t
s
o
n
t
h
e
s
a
m
e.
Fro
m
th
e
s
in
g
le
li
n
e
d
iag
r
a
m
,
elec
tr
ical
d
is
tr
ib
u
t
io
n
f
r
o
m
tr
a
n
s
f
o
r
m
er
to
m
ai
n
L
T
P
C
C
P
an
el
an
d
th
e
lo
ad
d
is
tr
ib
u
tio
n
p
atter
n
w
a
s
b
ee
n
s
tu
d
ied
.
T
h
en
s
ize
ca
p
a
cito
r
b
an
k
w
as
b
ee
n
ca
lc
u
lat
ed
an
d
s
tu
d
i
ed
an
d
also
b
ee
n
s
tu
d
ied
th
e
A
P
F
C
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
J
E
C
E
Vo
l.
6
,
No
.
6
,
Dec
em
b
er
2
0
1
6
:
2
5
7
7
–
2
5
8
0
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co
n
n
ec
tio
n
s
to
m
a
in
b
r
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k
er
.
T
h
en
li
n
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r
a
n
d
n
o
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li
n
ea
r
lo
ad
s
w
er
e
b
ee
n
s
ep
ar
ated
f
r
o
m
elec
tr
ical
lo
ad
s
u
m
m
ar
y
f
o
r
co
n
tr
o
l p
u
r
p
o
s
e.
E
n
s
u
r
e
an
d
ch
ec
k
t
h
e
elec
tr
ica
l
p
ar
am
eter
s
r
ec
o
r
d
ed
b
ef
o
r
e
a
n
d
af
ter
in
s
tall
th
e
h
ar
m
o
n
ic
f
i
lter
p
an
el
b
y
u
s
i
n
g
w
i
th
an
d
w
it
h
o
u
t
ca
p
ac
ito
r
s
b
ac
k
.
A
s
w
e
ll
as
r
ec
o
r
d
th
e
elec
tr
ical
d
ata
b
y
u
s
i
n
g
p
o
w
er
an
a
l
y
ze
r
.
C
h
ec
k
an
d
a
n
al
y
s
is
t
h
e
r
ec
o
r
d
ed
d
ata
f
o
r
p
o
s
s
ib
le
ef
f
ec
t o
f
c
u
r
r
en
t a
n
d
v
o
ltag
e
h
ar
m
o
n
ics.
Des
cr
ip
tio
n
o
f
elec
tr
ical
s
y
s
te
m
:
-
M/s
L
u
p
in
L
td
,
B
io
tech
Di
v
is
io
n
i
s
s
itu
ated
a
t
P
ir
an
g
u
t
P
u
n
e.
T
h
e
tr
an
s
f
o
r
m
er
c
ap
ac
it
y
i
s
1
5
0
0
KVA
-
2
2
KV/4
3
3
v
o
lts
at
m
ai
n
in
co
m
er
w
h
ich
i
s
m
a
n
u
f
ac
tu
r
ed
in
2
0
0
8
.
C
o
n
tr
ac
t
d
e
m
an
d
is
1
2
5
0
KVA
.
T
h
e
av
er
ag
e
K
w
h
co
n
s
u
m
p
tio
n
is
1
7
2
0
0
0
u
n
its
.
T
h
e
co
m
p
a
n
y
h
as
i
n
s
talled
to
tal
4
5
0
KVAR
ca
p
ac
ito
r
b
an
k
s
at
L
T
P
an
el
r
o
o
m
a
n
d
i
s
m
ai
n
tai
n
in
g
p
o
w
er
f
ac
to
r
n
ea
r
to
u
n
it
y
to
g
et
m
a
x
i
m
u
m
p
o
w
e
r
f
ac
to
r
i
n
ce
n
ti
v
e.
T
h
ese
ca
p
ac
ito
r
s
ar
e
s
w
itc
h
ed
o
n
Au
to
an
d
m
an
u
all
y
m
o
d
e.
5.
CO
NCLU
SI
O
N
AND
R
E
P
O
RT
O
F
H
ARM
O
NICS
5
.
1
.
B
ef
o
re
ins
t
a
lled H
a
rm
o
nic F
ilte
r:
T
h
e
cu
r
r
en
t
h
ar
m
o
n
ic
d
is
to
r
tio
n
lev
el
w
it
h
n
o
r
m
al
r
u
n
n
in
g
lo
ad
an
d
th
e
ca
p
ac
ito
r
b
an
k
s
ar
e
ON
is
as
f
o
llo
w
s
.
T
h
e
co
r
r
esp
o
n
d
in
g
k
W
lo
ad
is
v
ar
y
i
n
g
b
et
w
ee
n
8
7
5
KW
to
9
7
5
KW
.
T
h
e
av
er
ag
e
lo
ad
a
p
p
ea
r
s
to
b
e
co
n
s
ta
n
t a
r
o
u
n
d
9
5
0
k
W
.
T
h
e
cu
r
r
en
t
h
ar
m
o
n
ic
s
as
s
h
o
w
n
ab
o
v
e
ar
e
ar
o
u
n
d
7
.
8
%
(
Ma
x
)
w
i
th
ca
p
ac
ito
r
b
an
k
s
O
N
an
d
ar
e
in
cr
ea
s
i
n
g
f
r
o
m
4
%
to
7
.
8
%
af
ter
ap
p
licatio
n
o
f
ca
p
ac
ito
r
s
.
T
h
ese
h
ar
m
o
n
ics
ar
e
r
ec
o
r
d
ed
at
f
u
l
l
lo
ad
.
T
h
e
p
o
w
er
f
ac
to
r
m
ea
s
u
r
es
0
.
9
5
w
ith
t
h
is
ar
r
a
n
g
e
m
e
n
t
a
n
d
ca
p
ac
ito
r
s
ar
e
co
n
tr
ib
u
ti
n
g
to
a
m
p
l
if
icatio
n
o
f
c
u
r
r
en
t
h
ar
m
o
n
ics.
W
e
ca
m
e
to
co
n
clu
s
io
n
t
h
at
th
e
cu
r
r
en
t
h
ar
m
o
n
ics
as
r
ec
o
r
d
ed
o
n
tr
an
s
f
o
r
m
er
L
T
s
id
e
ar
e
w
el
l
b
ey
o
n
d
li
m
it
s
a
s
p
r
escr
ib
ed
b
y
I
E
E
E
5
1
9
-
1
9
9
2
.
So
s
u
g
g
e
s
ted
to
in
s
tall
AC
T
I
VE
HAR
MO
NI
C
FIL
T
E
R
f
o
r
am
p
li
f
icatio
n
o
f
c
u
r
r
en
t
h
ar
m
o
n
ic
s
a
n
d
s
h
all
b
e
r
ec
o
r
d
w
it
h
i
n
l
i
m
it
(
b
elo
w
5
%)
as
p
r
escr
ib
ed
b
y
I
E
E
E
519
-
1
9
9
2
.
A
ls
o
s
u
g
g
ested
t
h
a
t th
e
o
r
g
an
izatio
n
ca
n
also
t
h
i
n
k
ab
o
u
t i
n
s
talli
n
g
d
et
u
n
ed
h
a
r
m
o
n
ic
(
L
-
C
)
f
i
lter
s
w
it
h
s
tep
s
(
3
rd
, 5
th
a
n
d
7
th
%)
a
s
ab
o
v
e,
s
o
t
h
at
p
o
s
s
ib
ilit
y
o
f
cu
r
r
en
t
h
ar
m
o
n
ic
a
m
p
li
f
icatio
n
ca
n
b
e
av
o
id
ed
i
n
f
u
tu
r
e.
5
.
2
.
Af
t
er
I
ns
t
a
lled H
a
r
m
o
n
i
c
F
ilte
r
:
L
o
ad
cu
r
r
en
t
at
r
u
n
n
in
g
lo
ad
ap
p
ea
r
s
to
b
e
b
etw
ee
n
1
6
0
0
an
d
1
7
0
0
Am
p
s
an
d
i
s
f
air
l
y
b
alan
ce
d
o
n
all
th
r
ee
p
h
ases
.
I
n
itial
l
y
ca
p
ac
ito
r
s
w
er
e
k
ep
t
ON
an
d
f
r
o
m
2
P
M
to
3
.
3
0
P
M
ca
p
ac
ito
r
s
w
er
e
k
ep
t
OFF.
W
h
en
ca
p
ac
ito
r
s
w
er
e
k
ep
t
O
FF
,
t
h
e
av
er
a
g
e
T
HDI
is
3
.
3
to
4
.
2
%,
w
h
ile
f
o
r
r
est
o
f
th
e
p
er
io
d
it
is
4
.
8
%.
T
h
is
in
d
icate
s
t
h
at
ca
p
ac
ito
r
s
ar
e
co
n
tr
ib
u
tin
g
to
w
ar
d
s
a
m
p
l
if
icatio
n
o
f
h
ar
m
o
n
ics.
As
ex
p
e
cted
,
m
aj
o
r
ity
o
f
p
h
ar
m
a
i
n
d
u
s
tr
y
lo
ad
b
ein
g
n
o
n
li
n
ea
r
in
n
at
u
r
e,
lo
ad
g
e
n
er
ated
h
ar
m
o
n
ics
ar
e
al
m
o
s
t
n
eg
l
ig
ib
le.
Fo
llo
win
g
tab
le
g
i
v
es
v
al
u
es
o
f
%
cu
r
r
en
t
h
ar
m
o
n
ic
d
is
to
r
tio
n
a
n
d
ac
tu
al
h
ar
m
o
n
ic
cu
r
r
en
ts
at
f
u
ll lo
ad
.
M
a
x
i
m
u
m
F
i
g
u
r
e
s o
f
C
u
r
r
e
n
t
H
a
r
mo
n
i
c
D
i
st
o
r
t
i
o
n
%
R
e
c
o
r
d
e
d
a
f
t
e
r
I
n
st
a
l
l
a
t
i
o
n
o
f
A
H
F
P
a
n
e
l
P
h
a
se
T
H
D
I
3
r
d
5
t
h
7
t
h
1
1
t
h
1
3
t
h
R
4
.
6
2
.
8
2
.
3
3
.
8
0
.
7
0
.
6
Y
3
.
5
2
2
.
4
2
.
7
0
.
6
0
.
2
B
3
.
6
3
.
2
2
.
3
3
2
.
4
0
.
7
0
.
3
T
h
e
p
o
w
er
f
ac
to
r
is
f
o
u
n
d
u
n
it
y
w
i
th
ca
p
ac
ito
r
s
ON
co
n
d
itio
n
s
(
Av
er
ag
e
b
illi
n
g
p
o
w
er
f
ac
to
r
is
b
et
w
ee
n
(
1
to
0
.
9
5
)
an
d
lo
w
er
s
s
id
e
to
0
.
8
9
w
it
h
ca
p
ac
ito
r
s
OFF.
M
a
x
i
m
u
m
F
i
g
u
r
e
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f
C
u
r
r
e
n
t
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a
r
mo
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i
c
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st
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r
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R
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r
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d
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se
T
H
D
I
3
r
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h
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h
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1
3
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h
R
7
.
8
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.
8
5
.
3
7
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8
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.
8
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.
6
Y
6
.
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4
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4
4
.
4
5
.
6
0
.
6
0
.
2
B
6
.
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5
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.
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3
M
a
x
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f
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g
u
r
e
s re
c
o
r
d
e
d
a
r
e
a
r
o
u
n
d
7
.
8
%
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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C
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8
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R
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2580
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F
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NC
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[1
]
HI
-
T
e
c
h
El
e
c
tri
c
a
l
S
y
ste
m
s,
“
Ef
fec
ts
o
f
Ha
rm
o
n
ic Cu
rr
e
n
ts”
,
[2
]
Ho
lt
,
M
.
,
“
Ha
rm
o
n
ics
,
W
h
a
t
Yo
u
S
h
o
u
ld
K
n
o
w
”
,
h
tt
p
:/
/
ww
w
.
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tri
c
a
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o
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to
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t/
Ne
e
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_
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K
n
o
w
/Ha
r
m
o
n
ics
.
h
tm
,
1
9
9
8
[3
]
IEE
E
S
td
5
1
9
-
1
9
9
2
,
IEE
E
Re
c
o
m
m
e
n
d
e
d
P
ra
c
ti
c
e
s
a
n
d
Re
q
u
ire
m
e
n
ts
f
o
r
H
a
r
m
o
n
ic
Co
n
tro
l
in
El
e
c
tri
c
a
l
P
o
w
e
r
S
y
st
e
m
s,
Ne
w
Yo
rk
,
NY
:
IEE
E.
[4
]
J.
C.
Ba
ld
a
,
e
t
a
l
.
,
"
Co
m
m
e
n
ts
o
n
th
e
De
ra
ti
n
g
o
f
Distrib
u
ti
o
n
T
ra
n
sf
o
r
m
e
rs
S
e
r
v
in
g
No
n
li
n
e
a
r
L
o
a
d
s,”
P
r
o
c
.
o
f
th
e
S
e
c
o
n
d
In
t’
l
Co
n
f
.
o
n
P
o
w
e
r
Qu
a
li
ty
:
En
d
-
Us
e
A
p
p
li
c
a
ti
o
n
s an
d
P
e
rsp
e
c
ti
v
e
s,
A
tl
a
n
ta,
Ge
o
rg
ia,
S
e
p
t.
2
8
-
3
0
,
1
9
9
2
,
p
a
p
e
r
D
-
2
3
.
[5
]
W
.
M
a
c
k
G
r
a
d
y
a
n
d
Ro
b
e
rt
J.
G
il
les
k
ie,
”
h
tt
p
:/
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b
.
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d
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/7
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a
rm
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e
y
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re
lat
e
-
to
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p
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e
r
-
fa
c
to
r
[6
]
J
.
A
ril
lag
a
,
e
t
a
l,
”
Po
we
r S
y
ste
m Ha
rm
o
n
ics
”
[7
]
R.
C.
Du
g
a
n
,
D.T
.
Rizy
,
“
Ha
rm
o
n
ic Co
n
si
d
e
ra
ti
o
n
s f
o
r E
lec
trica
l
Distrib
u
ti
o
n
Fee
d
e
rs
"
[8
]
“
Ha
rm
o
n
ics
M
a
d
e
S
im
p
le”
b
y
R.
Feh
r ,
P.
E
[9
]
”
El
e
c
tric Uti
li
ty P
o
we
r
S
y
ste
m”.
A
tex
t
b
o
o
k
b
y
J
o
h
n
S
mit
h
&
M
c
G
ra
w
-
Hill
.
Evaluation Warning : The document was created with Spire.PDF for Python.