Historical Load-Profile Data - Siemens SICAM Q100 7KG95 Series Manual

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:
Table 5-1
Measured
quantities
P
Import
P
Export
Q
Import
Q
Export
S
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.
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A6, Edition 06.2019
Historical load-profile data
Cumulated Power
Values
x
x
x
x
x
Arithmetic Maximum
Average Power
Values
x
x
x
x
x
5 Energy Management
5.1 Load-Profile Determination
Minimum Values
Values
±x ±x
±x ±x
x x
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