5 Energy Management
5.1 Load-Profile Determination
83
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
Load-Profile Calculation
Arithmetic average power value
The calculation of the arithmetic
average power value
of a measuring period refers to the actual duration of
the measuring period.
Special case: With constant power consumption or constant power supply, the arithmetic average power value
also remains
constant
in the current measuring period.
Cumulated power value
The
power values
are calculated cumulatively and the calculation refers to the length of the respective subpe-
riod.
Special case: With constant power consumption or constant power supply, the cumulated power value rises
linearly
in the current measuring period.
5.1.3
Historical Load-Profile Data
SICAM Q100 records the following measured quantities:
Storage of Load-Profile Data
The load-profile data are stored in a ring buffer with up to 4 000 data sets. Every new data set overwrites the
oldest data set. Every data set contains the average power values, minimum/maximum values, a time stamp,
and status information for a completed subperiod.
The traceability of the load profile depends on the length of the subperiod:
•
Fixed Block method: length of the measuring period = 15 min
•
Rolling Block method: length of the subperiod = 15 min
On the condition that all periods correspond to the configured period length, the recording period is longer than
40 days.
Table 5-1
Historical load-profile data
Measured
quantities
Cumulated Power
Values
Arithmetic
Average Power
Values
Maximum
Values
Minimum Values
P
Import
x
x
±x
±x
P
Export
x
x
Q
Import
x
x
±x
±x
Q
Export
x
x
S
x
x
x
x