ABB RELION 630 Series Technical Manual page 70

Section 3
Basic functions
64
Example of adaptive frequency tracking
Task time group 1
SMAI instance 3 phase group
SMAI_20_1:1
SMAI_20_2:1
SMAI_20_3:1
SMAI_20_4:1
SMAI_20_5:1
SMAI_20_6:1
SMAI_20_7:1
SMAI_20_8:1
SMAI_20_9:1
SMAI_20_10:1
SMAI_20_11:1
SMAI_20_12:1
Task time group 2
SMAI instance 3 phase group
SMAI_20_1:2
SMAI_20_2:2
SMAI_20_3:2
SMAI_20_4:2
SMAI_20_5:2
SMAI_20_6:2
SMAI_20_7:2
SMAI_20_8:2
SMAI_20_9:2
SMAI_20_10:2
SMAI_20_11:2
SMAI_20_12:2
IEC09000029_1_en.vsd
IEC09000029 V1 EN
Figure 33: SMAI instances as organized in different task time groups and the
corresponding parameter numbers
The example shows a situation with adaptive frequency tracking with one reference
selected for all instances. In practice each instance can be adapted to the needs of the
actual application.
Example 1
1
2
3
DFTRefGrp7
4
5
6
7
8
9
10
11
12
1
2
3
4
5
6
7
8
9
10
11
12
PML630/Compact Load-Shedding Solution
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Technical Manual