Function description IEC 61850 identification Function description IEC 61850 identification
Out-of-step protection OOSPPAM Busbar differential
protection, check zone
BCZPDIF
Busbar differential
protection, dynamic zone
selection
BDZSGAPC Busbar differential
protection, single phase
feeder xx
BFPTRC_Fx, (1≤x≤24)
Busbar differential
protection, bus
interconnection xx
BICPTRC_x, (1≤x≤5) Busbar differential
protection, zone 1
BZNPDIF_Zx, (1≤x≤6)
18.3.2.3 Setting examples for IEC 61850-9-2LE and time synchronization
GUID-CEDD520A-8A13-41DF-BFF1-8A3B4C00E098 v1
It is important that the IED and the merging units (MU) uses the same time reference. This is
especially true if analog data is used from several sources, for example an internal TRM and a
MU. Or if several physical MU is used. The same time reference is important to correlate data
so that channels from different sources refer to correct phase angel.
When only one MU is used as analog source it is theoretically possible to do without time-
synchronization. However, this would mean that timestamps for analog and binary data/
events would be uncorrelated. Disturbance recordings will appear incorrect since analog data
will be timestamped by MU and binary events will use internal IED time. For this reason it is
recommended to use time synchronization also when analog data emanate from only one MU.
An external time-source can be used to synchronize both the IED and the MU. It is also possible
to use the MU as clock-master to synchronize the IED from the MU. When using an external
clock, it is possible to set the IED to be synchronized via PPS or IRIG-B. It is also possible to use
an internal GPS-receiver in the IED (if the external clock is using GPS).
Using the MU as time source for synchronization
IED
MU
Analog data
PPS
IEC 61850-9-2LE
Synchronization
IEC10000061-1-en.vsd
IEC10000061 V1 EN-US
Figure 205: Setting example when MU is the synchronizing source
Settings in local HMI under Settings/Time/Synchronization/TIMESYNCHGEN/IEC 61850-9-2:
1MRK 511 358-UEN A Section 18
Station communication
417
Application manual
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