ABB Relion 670 Series Applications Manual page 441

1MRK 505 370-UUS Rev. K
Settings on the local HMI under Main menu/Configuration /Communication/Ethernet configuration /
Access point/AP_X :
• Operation: On
• PTP: On
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.
Using MU for time synchronization via PPS
IEC/UCA 61850-9-2LE
IEC10000061 V2 EN-US
Figure 223: 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 (Hitachi Power grids 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:
Busbar protection REB670
Application manual
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
Analog data
MU
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PPS
Synchronization
IEC10000061=2=en=Original.vsd
Section 17
Station communication
435