5.1 Load Profile; Function Description - Siemens SICAM 7KG85X Manual

Energy Management

5.1 Load Profile

5.1 Load Profile

Function Description

5.1.1
General
The load profile reflects the history of the electric power and documents the distribution of power fluctuations
and peaks. The load profile is determined on the basis of 10/12 cycles (50 Hz/60 Hz) and saved as average
value at the end of a measuring period in the load-profile image.
The device supports 2 methods for the determination of the average power value:
•
Fixed block
•
Rolling block
The load profile is stored in the non-volatile ring buffer of the device and provided at the communication inter-
faces . In addition, it can be output as CSV file.
The load profile can be recorded in synchronized form (time, trigger) or in non-synchronized form. The
synchronization is made by external or internal triggers.
The following diagram shows a 45-min measuring period which consists of 3 subperiods of 15 min each
(Rolling block).
The measured and calculated load-profile data are stored in the ring buffer at the end of each subperiod. After
3 subperiods, the average power value of the measuring period is calculated from the 3 load-profile data of
the subperiods. The values (cumulative values and averages) can be retrieved at any time within a subperiod
via the communication. At the end of the 4th subperiod (d) the average power values are calculated from both
of the subperiods b, c, and d.
The preset measuring-period length of a subperiod is 15 minutes.
[dw_power-history-15-min, 1, en_US]
Figure 5-1
100
Power History of a Measuring Period Consisting of Three 15-min Subperiods
SICAM, SICAM P850/P855 7KG85X, Manual
E50417-H1040-C482-A9, Edition 03.2022