IED
MU
data
PPS
IEC 61850-9-2LE
PPS / IRIG-B
STATION
CLOCK
IEC10000074-1-en.vsd
IEC10000074 V1 EN
Figure 320: Setting example with external synchronization
Settings in local HMI under Settings/Time/Synchronization/TIMESYNCHGEN/
IEC 61850-9-2:
• HwSyncSrc : set to PPS/IRIG-B depending on available outputs on the clock
• AppSynch : set to Synch, for blocking protection functions in case of loss of time
synchronization
• SyncAccLevel : could be set to 4us since this correspond to a maximum phase-
angle error of 0.072 degrees at 50Hz
• fineSyncSource :should be set to IRIG-B if this is available from the clock. If using
PPS for HWSyncSrc , “full-time” has to be acquired from another source. If the
station clock is on the local area network (LAN) and has a sntp-server this is one
option.
Settings in PST in PCM600 under: Hardware/Analog modules/Merging units/MU01
• SyncMode: set to Operation. This means that the IED will block if the MU loose
time synchronization.
There are 3 signals that monitors state related to time synchronization:
• TSYNCERR signal on the TIMEERR function block will go high whenever
internal timeQuality goes above the setting SyncAccLevel (4us in this case). This
Section 4 1MRK504116-UUS C
Station communication
826
Application manual
To Next Page
Loading...
