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Power Quality Logger
Logger Parameters with Function A
43
Distortion power. Basic
value on 200 ms per
phase
222
basbasbasbas
QPSD −−=
Distortion power per
interval per phase
∑
=
⋅=
M
j
j
bas
D
M
D
1
1
D
bas j
: 200 ms value
M: Number of 200 ms intervals per logging interval
Total distortion power on
three phases
∑
=
=
3
1k
ktotal
DD
Distortion power per
phase
Q
Q
S
P
PF ⋅==
λ
Total distortion power on
three phases
total
total
total
total
totaltotal
Q
Q
S
P
PF ⋅==
λ
Tangent φ per phase
P
Q
=
ϕ
tan
Total tangent φ on three
phases
total
total
total
P
Q
=
ϕ
tan
Active power of the
fundamental per phase
Basic value for 200 ms.
1
1 PPh
bas
=
Active power of the
fundamental per phase per
interval
∑
=
⋅=
M
j
j
basbas
Ph
M
Ph
1
1
1
1