Aggregation; Power & Energy Logger Model Pel 102 And Pel - AEMC PEL 102 User Manual

Power energy logger
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Quantities
Cos φ
L
TAN Φ
Line-to-neutral voltage
harmonic distortion rate
THD_VL (%)
Line-to-line voltage
harmonic distortion rate
THD_Uab (%)
Current harmonic
distortion rate
THD_IL (%)
A.3 Aggregation
Aggregated quantities are calculated for a defined period according to the following formulas based on 50/60 cycles.
Aggregation can be averaging or quadratic averaging, or other methods.
Power & Energy Logger Model PEL 102 and PEL 103
Formula
Quantities
Line-to-neutral voltage (V
)
L
(RMS)
Line-to-neutral voltage (V
)
L
(DC)
Line-to-line voltage
(U
)
ab
(RMS)
Current (I
)
L
(RMS)
Current (I
)
L
(DC)
Voltage crest factor
(CF
)
VL
Current crest factor
(CF
)
IL
Frequency (F)
Active Power
on source (P
)
L
Active Power
on load (P
)
L
Reactive Power
on source (Q
)
L
Cos φ [10/12] is the cosinus of the difference
between the phase of the fundamental of the
current I and the phase of the fundamental of
the line-to-neutral voltage V for 10/12 cycles
Q[10/12] and P[10/12] are the 10/12 periods
THD is calculated as % of fundamental
VH1 is the value of fundamental
THD is calculated as % of fundamental
UH1 is the value of fundamental
THD is calculated as % of fundamental
IH1 is the value of fundamental
Table 28
Formula
N
1
1
2
V
[
agg
]
=
×
V
1 [
L
L
x
N
x
=
0
N
1
1
V
V
[
agg
]
=
×
[
200
L
Lx
N
x
=
0
N
1
1
2
U
[
agg
]
=
×
U
ab
abx
N
x
=
0
ab = 12, 23 or 31
N
1
1
2
I
[
agg
]
=
×
I
L
Lx
N
x
=
0
N
1
1
I
[
agg
]
=
×
I
[
200
L
Lx
N
x
=
0
N
1
CF
[
agg
]
=
×
CF
[
] 1
VL
VL
N
1
N
1
CF
[
agg
]
=
×
CF
1 [
IL
IL
N
1
N
1
1
F
[
agg
]
=
×
F
1 [
x
N
x
=
0
N
1
1
P
[
agg
]
=
×
P
SL
SLx
N
x
=
0
N
1
1
P
[
agg
]
P
=
×
SL
SLx
N
x
=
0
N
1
1
Q
[
agg
]
=
×
Q
SL
SLx
N
x
=
0
Comments
values
value for Q and P.
s
]
ms
]
1 [
s
]
1 [
s
]
ms
]
s
s
]
s
]
1 [
s
]
1 [
s
]
1 [
s
]
89

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