ABB Relion 670 Series Applications Manual page 111

1MRK 511 401-UEN Rev. K
IEC140000126 V2 EN-US
Figure 41: PMUREPORT settings in PCM600 PST
Figure 42
where two different SMAI blocks are connected to different PHASORREPORT blocks with
different instance numbers. In this example, as the PHASORREPORT blocks have different
instance numbers and different settings for SvcClass and ReportRate, a separate SMAI block is
used for each PHASORREPORT block.
IEC140000127 V2 EN-US
Figure 42: An example of correct connection of SMAI and PHASORREPORT blocks in ACT
Figure 43
where the same SMAI block is connected to different PHASORREPORT blocks with different
instance numbers. Such connection will be only correct if both connected PHASORREPORT
blocks have similar settings for SvcClass and ReportRate. If settings for PMUREPORT instances
differ for SvcClass or ReportRate, then PHASOR1 connection in PHASORREPORT1 instance 2
will not be compliant with IEEE C37.118 standard. The reason is that 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. In this example, SMAI1 will adapt its
filtering according to PHASORREPORT instance 1 (because of higher priority) and therefore
PHASORREPORT instance 2 will receive data which does not match its performance class and
report rate.
Bay control REC670
Application manual
shows an example of correct connection of SMAI and PHASORREPORT blocks in ACT
shows an example of wrong connection of SMAI and PHASORREPORT blocks in ACT
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Section 6
Wide area measurement system
IEC140000126-2-en.vsd
IEC140000127-2-en.vsd
105