ABB Relion 650 Series Applications Manual page 240

Section 15
Basic IED functions
BLOCK
DFTSPFC
REVROT
^GRP1L1
^GRP1L2
^GRP1L3
^GRP1N
IEC09000028 V2 EN-US
Figure 115: Configuration for using an instance in task time group 1 as DFT reference
Assume instance SMAI_20_7:1 in task time group 1 has been selected in the configuration to
control the frequency tracking (For the SMAI_20_x of task time group 1). Observe that the selected
reference instance (i.e. frequency tracking master) must be a voltage type. Observe that positive
sequence voltage is used for the frequency tracking feature.
For task time group 1 this gives the following settings (see Figure
SMAI_20_1:1
DFTReference = DFTRefGrp7 for SMAI_20_7:1 to use SMAI_20_7:1 as reference (see Figure 115). .
SMAI_20_2:1 - SMAI_20_12:1
SMAI_20_7:1 as reference.
For task time group 2 this gives the following settings:
SMAI_20_2:2: DFTReference = ExternalDFTRef to use DFTSPFC input as reference (SMAI_20_7:1);
DFTRefExtOut = ExternalDFTRef (even if the output SPCFOUT is not wired in AC).
SMAI_20_2:2 - SMAI_20_12:2
(SMAI_20_7:1)
15.10 Summation block 3 phase 3PHSUM
15.10.1 Identification
Function description
Summation block 3 phase
15.10.2 Application
Summation block 3 phase function 3PHSUM is used to get the sum of two sets of three-phase
analog signals (of the same type) for those IED functions that might need it.
15.10.3 Setting guidelines
The summation block receives the three-phase signals from SMAI blocks. The summation block
has several settings.
234
SMAI_20_7:1
SPFCOUT
AI3P
AI1
AI2
AI3
AI4
AIN
DFTRefExtOut = DFTRefGrp7 to route SMAI_20_7:1 reference to the SPFCOUT output,
DFTReference = DFTRefGrp7 for SMAI_20_2:1 - SMAI_20_12:1 to use
DFTReference = ExternalDFTRef to use DFTSPFC input as reference
© Copyright 2013 ABB. All rights reserved
SMAI_20_1-12:2
BLOCK
DFTSPFC
REVROT
^GRP1L1
^GRP1L2
^GRP1L3
^GRP1N
IEC09000028-2-en.vsd
IEC 61850 IEC 60617
identification identification
3PHSUM -
1MRK 505 287-UUS B
SPFCOUT
AI3P
AI1
AI2
AI3
AI4
AIN
114 for numbering):
GUID-06105A66-A4ED-4752-9A4B-1355AEBB45BC v1
ANSI/IEEE C37.2
device number
-
Busbar protection REB650
Application manual
SEMOD55976-4 v3
SEMOD56006-4 v5