IED
MU
data
PPS
IEC/UCA 61850-9-2LE
PPS / IRIG-B
STATION
CLOCK
IEC10000074=2=en=Original.vsd
IEC10000074 V2 EN-US
Figure 217: Setting example with external synchronization
Settings on the local HMI under Main menu/Configuration/Time/Synchronization/
TIMESYNCHGEN:1/IEC61850-9-2:
•
HwSyncSrc
: set to
PPS/IRIG-B
depending on available outputs on the clock.
•
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.
•
fineSyncSource
: should be set to
IRIG-B
if available from the clock. If
PPS
is used for
HWSyncSrc
, “full-time” has to be acquired from another source. If station clock is on the
local area network (LAN) and has an sntp-server, this is one option.
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 (that is loss of the hardware
synchSrc
).
• MUSYNCH signal on the MUx function block monitors the synchronization flag
smpSynch
in the datastream and IED hardware time synchronization.
No 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.
Section 17 1MRK 505 370-UEN D
Station communication
406 Busbar protection REB670
Application manual
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