Sonel MPI-540 - Energy Loss Calculator; Functional Description

MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
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5.8 Energy loss calculator
5.8.1 Functional description
In this mode, you can estimate the loss of active power and associated costs due to poor power sup-
ply quality. The loss analysis screen is shown in Fig. 5.9. Analysis can be performed in terms of the
desired time.
Fig. 5.9 Energy loss analysis
Parameters to analyse
P
opt
power loss due to wire resistance (as-
suming the absence of higher harmon-
ics, unbalance and reactive power)
C
opt
cost related to P
opt
loss
P
dis
loss due to higher harmonics
C
dis
cost related to P
dis
loss
P
unb
power loss due to network asymmetry
C
unb
cost related to P
unb
loss
P
rea
power loss due to poor power factor
(from harmonics)
C
rea
cost related to P
rea
loss
C
pf
cost related to a low power factor (large
share of reactive power)
P
tot
total loss (the sum of the above)
C
tot
cost related to P
rea
loss
P
sav
loss which can be reduced by improving
the quality parameters (e.g. compensa-
tion of harmonics, elimination of unbal-
ance), arising from the relationship:
P
sav
= P
tot
- P
opt
C
sav
cost related to P
sav
loss