ABB REG670 Applications Manual page 739

1MRK 502 071-UEN -
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
Application manual
Task time group 1
SMAI instance 3 phase group
SMAI1:1 1
SMAI2:2 2
SMAI3:3 3
SMAI4:4 4
SMAI5:5 5
SMAI6:6 6
SMAI7:7 7
SMAI8:8 8
SMAI9:9 9
SMAI10:10 10
SMAI11:11 11
SMAI12:12 12
Task time group 2
SMAI instance 3 phase group
SMAI1:13 1
SMAI2:14 2
SMAI3:15 3
SMAI4:16 4
SMAI5:17 5
SMAI6:18 6
SMAI7:19 7
SMAI8:20 8
SMAI9:21 9
SMAI10:22 10
SMAI11:23 11
SMAI12:24 12
Task time group 3
SMAI instance 3 phase group
SMAI1:25 1
SMAI2:26 2
SMAI3:27 3
SMAI4:28 4
SMAI5:29 5
SMAI6:30 6
SMAI7:31 7
SMAI8:32 8
SMAI9:33 9
SMAI10:34 10
SMAI11:35 11
SMAI12:36 12
IEC07000197 V2 EN
Figure 343: Twelve SMAI instances are grouped within one task time. SMAI
blocks are available in three different task times in the IED. Two
pointed instances are used in the following examples.
The examples 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. The adaptive frequency tracking is needed in IEDs that belong to
the protection system of synchronous machines and that are active during run-up and
shout-down of the machine. In other application the usual setting of the parameter
DFTReference of SMAI is InternalDFTRef.
Example 1
Basic IED functions
AdDFTRefCh7
AdDFTRefCh4
IEC07000197.vsd
Section 23
733