Demand Measurement Setup; Long-Term Average Values; Settings; Information List - Siemens siprotec 7SD5 User Manual

2.24.9 Demand Measurement Setup

Long-term average values are calculated by 7SD5 and can be read out with the time
reference (date and time of the last update).

2.24.9.1 Long-term Average Values

The long-term averages of the three phase currents I
ponents I
apparent power S are calculated within a set period of time and indicated in primary
values.
For the long-term average values mentioned above, the length of the time window for
averaging and the frequency with which it is updated can be set. The associated
minimum and maximum values can be reset, using binary inputs or by using the inte-
grated control panel in the DIGSI

2.24.9.2 Settings

Addr. Parameter
2801 DMD Interval
2802 DMD Sync.Time

2.24.9.3 Information List

No. Information
833 I1dmd =
834 Pdmd =
835 Qdmd =
836 Sdmd =
963 IL1dmd=
964 IL2dmd=
965 IL3dmd=
1052 Pdmd Forw=
1053 Pdmd Rev =
1054 Qdmd Forw=
1055 Qdmd Rev =
7SD5 Manual
C53000-G1176-C169-1
for the three phase currents, and the real power P, reactive power Q, and
1
®
Setting Options
15 Min., 1 Sub
15 Min., 3 Subs
15 Min.,15 Subs
30 Min., 1 Sub
60 Min., 1 Sub
On The Hour
15 After Hour
30 After Hour
45 After Hour
Type of In-
formation
MV I1 (positive sequence) Demand
MV Active Power Demand
MV Reactive Power Demand
MV Apparent Power Demand
MV I L1 demand
MV I L2 demand
MV I L3 demand
MV Active Power Demand Forward
MV Active Power Demand Reverse
MV Reactive Power Demand Forward
MV Reactive Power Demand Reverse
, the positive sequence com-
Lx
operating program.
Default Setting
60 Min., 1 Sub Demand Calculation Intervals
On The Hour Demand Synchronization Time
Comments
2.24 Ancillary Functions
Comments
431