Using MU for time synchronization via PPS
This example is not valid when GPS time is used for differential protection,
when PTP is enabled or when the PMU report is used.
IED
MU
Analog data
PPS
IEC/UCA 61850-9-2LE
Synchronization
IEC10000061=2=en=Original.vsd
IEC10000061 V2 EN-US
Figure 216: Setting example when MU is the synchronizing source
Settings on the local HMI under Main menu/Configuration/Time/Synchronization/
TIMESYNCHGEN:1/IEC61850-9-2:
•
HwSyncSrc
: set to
PPS
as generated by the MU (ABB MU)
•
SyncLostMode
: set to
Block
to block protection functions if time synchronization is lost
•
SyncAccLevel
: can be set to
4μs
since this corresponds to a maximum phase angle error of
0.072 degrees at 50Hz
Settings on the local HMI under Main menu/Configuration/Time/Synchronization/
TIMESYNCHGEN:1/General:
•
fineSyncSource
can be set to something different to correlate events and data to other
IEDs in the station.
Two status monitoring signals can be:
• SYNCH signal on the MUx function block indicates that protection functions are blocked
due to loss of internal time synchronization to the IED.
• MUSYNCH signal on the MUx function block monitors the synchronization flag
smpSynch
in the datastream and IED hardware time synchronization.
SMPLLOST indicates that merging unit data are generated by internal substitution or one/
more channel's Quality is not good or merging unit is in Testmode/detailed quality=Test, IED
is not in test mode.
Using external clock for time synchronization
This example is not valid when GPS time is used for differential protection,
when PTP is enabled or when the PMU report is used.
1MRK 505 370-UEN D Section 17
Station communication
Busbar protection REB670 405
Application manual
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