Application - ABB REL650 Applications Manual

1MRK 506 334-UUS A
17.2.2
17.2.3
Application manual

Application

Use a common global source for example GPS time synchronization inside each
substation as well as inside the area of the utility responsibility to achieve a common time
base for the IEDs in a protection and control system. This makes comparison and analysis
of events and disturbance data between all IEDs in the power system possible.
Time-tagging of internal events and disturbances are an excellent help when evaluating
faults. Without time synchronization, only the events within the IED can be compared to
one another. With time synchronization, events and disturbances within the entire station,
and even between line ends, can be compared during evaluation.
In the IED, the internal time can be synchronized from a number of sources:
• SNTP
• IRIG-B
• DNP
• IEC60870-5-103
Micro SCADA OPC server should not be used as a time synchronization
source.
Setting guidelines
System time
The time is only possible to set inside the IED via the local HMI by navigating to
Configuration/Time/SYSTEMTIME with year, month, day, hour, minute and second.
Synchronization
With external time synchronization the setting how to synchronize for the real-time clock
(TIME) are set via local HMI or PCM600.
TimeSynch
The setting TIMESYNCGEN is used to set the source of the time synchronization. The
setting alternatives are:
CoarseSyncSrc which can have the following values:
• Disabled
• SNTP
• DNP
• IEC60870-5-103
Section 17
Basic IED functions
471