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Power Quality Logger
Logger Parameters with Function P
39
P
k
: Active power of the phase
k: Phase (k = 1, 2, 3)
Absolute value of the active power
per interval per phase. Parameter in
PQ Log: |P|.
∑
=
⋅=
M
j
j
basbetr
P
M
P
1
1
M: Number of 200 ms intervals per
logging interval
Sum of the absolute value of the total
active power on all three phases. PQ
Log parameter: |P|
total
.
()
k
k
betrbetrtotal
PP
∑
=
=
3
1
K: Phase (k = 1, 2, 3)
Apparent power per phase
22
basbasbas
QPS +=
Apparent power per logging interval
per phase
∑
=
⋅=
M
j
j
bas
S
M
S
1
1
Total apparent power on all three
phases
∑
=
=
3
1k
ktotal
SS
Power factor per phase
S
P
Q
Q
PF ⋅==
λ
Total power factor on all three
phases
total
total
total
total
totaltotal
Q
Q
S
P
PF ⋅==
λ
Tangent φ per phase
P
Q
=
ϕ
tan
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