... 121 161
1
22 12 222 26 2
12 6
mmmmm mm
et h t h t h t
x
et ht ht ht
x
et h t h t h t
2
6
x
(27 )
Power Quality Harmonics Analysis and Real Measurements Data ... harmonics for phase A
current.
Power Quality Harmonics Analysis and Real Measurements Data
22
11 1 21 1
22 2 3...
...
22
22 2
11 11 22 22
[,][,][,][,][,]
nn
nnnnnnnnn
vv
vpu pupu pupu (78)
Then the center and spread values of the amplitude of the n
th
harmonic are computed as
follows:
2
2
22
12
22
12
n
n
n
n
nnn
vnn
v
vnn
v
vvv
p
ppp
uuuu
cup
... 0
001
n
nn
x
2
3
10.50.5
33
0
22
11 1
22 2
=
2
3
sin sin( 1...
... validate the proposed expression and several examples of its application.
Power Quality Harmonics Analysis and Real Measurements Data
1 82
22
12 1 12
22
() ()
;
,
Sk Sk Stz k Lk Stz k ... (11)
where
=++⋅ =++⋅
=+⋅ + +⋅ + + + +⋅
=+⋅ + +⋅ + + + +⋅
12 2 2 2
() 2
121 2
() 2
12 2 1
( )2; ( )2
2( )3( ( )) (2)
2( )3( ( )) (2)
Sk k k Stz k Sk Lk k Stz kC...
... three readings is 28 .9%. Moreover, the
harmonics appears to distort the phase current waveform as in Figure 6.
Power Quality Harmonics Analysis and Real Measurements Data
22 6
Location
Max ... costly[13].
Power Quality Harmonics Analysis and Real Measurements Data
22 8
The online value of THD was 9.6%. The percentage difference (Error) of the calcu...
...
Power Quality Harmonics Analysis and Real Measurements Data
26 0
Transactions on Power Delivery, Vol. 23 , Issue 2, (april 20 08), pp. 974-984, ISSN 0885-
8977.
CA8334, Three Phase Power Quality ... 9 92 1088
PEAK- [A] -896 -9 92 -1056
Table 20 . Extreme and average values for line currents at the end of melting (LV line)
Power Quality Harmonics A...
... waveform and (b)
FFT analysis of the waveform obtained, at node 5.
Power Quality Harmonics Analysis and Real Measurements Data
27 2
2. 000 2. 005 2. 010 2. 015 2. 020
-0.050
-0. 025
0.000 ...
wind farm electric circuit and grounding system and (b) FFT analysis of the voltage
waveform obtained.
Power Quality Harmonics Analysis and...
...
Power Quality Harmonics Analysis and Real Measurements Data, Edited by Gregorio
Romero Rey and Luisa Martinez Muneta
p. cm.
ISBN 978-953-307-335-4
POWER QUALITY
HARMONICS ANALYSIS
AND ...
HARMONICS ANALYSIS
AND REAL
MEASUREMENTS DATA
Edited by Gregorio Romero Rey
and Luisa Martinez Muneta
Power Quality Harmonics Analysis and R...
...
this power) . Examination of these curves reveals the following results. The fundamental
power and the fourth and sixth harmonics are time-varying.
Power Quality Harmonics Analysis and Real Measurements ... and Measurements
31
recorded data set. and computes the voltage and current harmonics magnitude, the voltage
and current harmonics phase angle...
... ratio and low rated power, intended to supply only measuring inputs
Power Quality Harmonics Analysis and Real Measurements Data
106
-30 0 30 60 90
0.0
0.5
1.0
1.5
2. 0
2. 5
1
0
Hz
2
k
Hz
9
... frequencies, IEEE Transactions on
Power Delivery, Volume 10, Issue 4, Oct. 1995
Power Quality Harmonics Analysis and Real Measurements Data
92
W...