ABB RELION 670 SERIES Applications Manual page 132

Section 6
Wide area measurement system
126
IEC140000128 V2 EN
Figure 43: An example of wrong connection of SMAI and PHASORREPORT blocks
in ACT
Rule 3:
This rule is only related to the connection of 3PHSUM block to the PHASORREPORT
block. If 3PHSUM block is configured to use external DFT reference (from SMAI
reference block), it shall only be connected to the same PHASORREPORT block instance
as the one the SMAI reference block is connected to. In other words, both the SMAI
reference block and 3PHSUM block (3PHSUM block with external DFT reference) shall
be connected to the same instance of PHASORREPORT block (PHASOR1-32 of
Instance number 1 or 2).
Figure 44 shows an example of correct connection of 3PHSUM and PHASORREPORT
blocks in ACT where SMAI3 is configured as the reference block for DFT reference
external out (DFTRefExtOut) and 3PHSUM uses external DFT reference (from SMAI3).
Figures 45 and 46 show the corresponding setting parameters.
1MRK 506 369-UUS -
IEC140000128-2-en.vsd
Line distance protection REL670 2.2 ANSI
Application manual