ABB Relion 670 Series Applications Manual page 335

1MRK 511 407-UUS Rev. J
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. Also,
adaptive frequency tracking is needed in PMU application to be compliant to PMU standards. In
other application the usual setting of the parameter
Example 1
BLOCK BLOCK BLOCK BLOCK
DFTSPFC DFTSPFC DFTSPFC DFTSPFC
^GRP1_A ^GRP1_A ^GRP1_A ^GRP1_A
^GRP1_B ^GRP1_B ^GRP1_B ^GRP1_B
^GRP1_C ^GRP1_C ^GRP1_C ^GRP1_C
^GRP1_N ^GRP1_N ^GRP1_N ^GRP1_N
TYPE TYPE TYPE TYPE
ANSI07000198 V2 EN-US
Figure 122: Configuration for using an instance in task time group 1 as DFT reference
Assume instance SMAI7:7 in task time group 1 has been selected in the configuration to control the
frequency tracking . 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
SMAI1:1:
DFTReference = DFTRefGrp7 for SMAI1:1 to use SMAI7:7 as reference (see Figure 122) SMAI2:2 –
SMAI12:12:
For task time group 2 this gives the following settings:
Phasor measurement unit RES670
Application manual
The user should use 0.9 ms task time for connection to PMU functions.
SMAI1:1 SMAI1:1 SMAI1:1
SPFCOUT SPFCOUT SPFCOUT SPFCOUT
AI3P AI3P AI3P AI3P
AI1 AI1 AI1 AI1
AI2 AI2 AI2 AI2
AI3 AI3 AI3 AI3
AI4 AI4 AI4 AI4
AIN AIN AIN AIN
DFTRefExtOut = DFTRefGrp7 to route SMAI7:7 reference to the SPFCOUT output,
DFTReference = DFTRefGrp7 for SMAI2:2 – SMAI12:12 to use SMAI7:7 as reference.
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DFTReference of SMAI is InternalDFTRef .
SMAI1:13 SMAI1:13 SMAI1:13
BLOCK BLOCK BLOCK BLOCK SPFCOUT SPFCOUT SPFCOUT SPFCOUT
DFTSPFC DFTSPFC DFTSPFC DFTSPFC AI3P AI3P AI3P AI3P
^GRP1_A ^GRP1_A ^GRP1_A ^GRP1_A AI1 AI1 AI1 AI1
^GRP1_B ^GRP1_B ^GRP1_B ^GRP1_B AI2 AI2 AI2 AI2
^GRP1_C ^GRP1_C ^GRP1_C ^GRP1_C AI3 AI3 AI3 AI3
^GRP1_N ^GRP1_N ^GRP1_N ^GRP1_N AI4 AI4 AI4 AI4
TYPE TYPE TYPE TYPE AIN AIN AIN AIN
SMAI1:25 SMAI1:25 SMAI1:25
BLOCK BLOCK BLOCK BLOCK SPFCOUT SPFCOUT SPFCOUT SPFCOUT
DFTSPFC DFTSPFC DFTSPFC DFTSPFC AI3P AI3P AI3P AI3P
^GRP1_A ^GRP1_A ^GRP1_A ^GRP1_A AI 1 AI 1 AI 1 AI 1
^GRP1_B ^GRP1_B ^GRP1_B ^GRP1_B AI 2 AI 2 AI 2 AI 2
^GRP1_C ^GRP1_C ^GRP1_C ^GRP1_C AI3 AI3 AI3 AI3
^GRP1_N ^GRP1_N ^GRP1_N ^GRP1_N AI4 AI4 AI4 AI4
TYPE TYPE TYPE TYPE AI N AI N AI N AI N
SMAI1:37
BLOCK BLOCK SPFCOUT SPFCOUT
DFTSPFC DFTSPFC AI3P AI3P
^GRP1_A ^GRP1_A AI1 AI1
^GRP1_B ^GRP1_B AI2 AI2
^GRP1_C ^GRP1_C AI3 AI3
^GRP1_N ^GRP1_N AI4 AI4
TYPE TYPE AIN AIN
ANSI07000198.vsd
121 for numbering):
Section 22
Basic IED functions
329