ABB REG670 Applications Manual page 126

Section 6
Wide area measurement system
120
IEC140000131 V1 EN
Figure 51: 3PHSUM setting parameters example-showing that 3PHSUM is
using the External DFT reference coming indirectly from SMAI3
Figure 52 shows an example of wrong 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).
IEC140000132 V2 EN
Figure 52: An example of wrong connection of 3PHSUM and
PHASORREPORT blocks in ACT
If settings for PMUREPORT instances (PHASORREPORT1 instances 1 and 2 above)
differ for SvcClass or ReportRate, then the synchrophasor reported by PHASOR2
connection from PHASORREPORT1 instance 2 will not be compliant with IEEE
C37.118 standard. The reason is as in the rule 2, the filtering in SMAI/3PHSUM block
is adapted according to the performance class (SvcClass) and reporting rate of the
connected instance of PHASORREPORT function block. On the other hand, when
3PHSUM uses external DFT reference, it also adapts its filtering according to the
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062
1MRK 502 071-UEN -
IEC140000131-1-en
IEC140000132-2-en.vsd
Application manual