ABB REL670 2.2 IEC - Page 127

IEC140000128-2-en.vsd
IEC140000128 V2 EN-US
Figure 42: 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
43 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 44 and 45 show the corresponding setting
parameters.
1MRK 506 369-UEN B Section 6
Wide area measurement system
Line distance protection REL670 2.2 IEC 121
Application manual