ABB Relion RES670, Technical Manual

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Section 22 Basic IED functions
22.1 Time synchronization TIMESYNCHGEN
IP1750-1 v2
22.1.1 Functionality
M11344-3 v10
The time synchronization source selector is used to select a common source of absolute
time for the IED. For RES670 as a Phasor Measurement Unit (PMU) an accurate time
synchronization is essential to allow the comparison of phasors measured at different
locations in a Wide Area Monitoring System (WAMS). For an IED as part of a
protection system, time synchronization is required to compare event and disturbance
data between all IEDs in a substation automation system. A common source shall be
used for IED and merging unit when IEC 61850-9-2LE process bus communication is
used.
Only GPS and IRIG-B (Optical IRIG-B 00X is recommended), with IEEE1344
support, are the acceptable time synchronization sources for synchrophasor
measurement applications and RES670 supports both.
Micro SCADA OPC server should not be used as a time
synchronization source.
22.1.2 Settings
IP9657-1 v2
SEMOD55141-5 v6
There are two groups of parameter settings related to time:
• System time
• Synchronization
The System time group relates to setting the on/off and start/end of the Daylight Saving
Time (DST) for the local time zone in relation to Coordinated Universal Time (UTC).
The Synchronization group relates to selecting the coarse and fine synchronization
sources. As well as defining the synchronization master and accuracy levels
specifically for IEC 61850-9-2.
All the settings and parameters related to time are available via Local HMI under Main
menu/Configuration/Time/System time and via PCM600 under IED Configuration/
Time .
1MRK 511 408-UUS A
Section 22
Basic IED functions
Phasor measurement unit RES670 2.2 ANSI 761
Technical manual