ABB Relion 670 Series RES670, Technical Manual

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TZ Offset supplied in the message equals UTC at all times. For RES670, optical IRIG-B
00x with IEEE1344 support is recommended.
Redundant time synchronization via both GPS and IRIG-B
In order to improve the time reliability of the PMU, time synchronization redundancy is
provided in RES670. In this case, both built-in GPS and IRIG-B modules shall be used and
the
FineSynchSource parameter shall be set as GPS+IRIG-B . The time synchronization
source with the best calculated time-quality is automatically selected. If both GPS and
IRIG-B sources have the required accuracy, optical IRIG-B with IEEE1344 will be
automatically selected as the time synchronization source.
20.6.3.4 Process bus IEC 61850-9-2LE synchronization
When process bus communication (IEC 61850-9-2LE protocol) is used, it is essential that
the merging units are using the same time source as the IED. To achieve this, a satellite-
controlled clock shall provide time synchronization to the IED (either internal GPS or via
IRIG-B 00x with IEEE1344 support) and to the merging units (via for instance PPS). For
the time synchronization of the process bus communication, GPS Time Module (GTM)
and/or IRIG-B module can be used. If the IED contains a GTM, the merging unit can be
synchronized from the PPS output of the GTM.
20.6.4 Technical data
Table 598: Time synchronization, time tagging
Function Value
Time tagging accuracy of the synchrophasor data ± 1 µs
20.7 Parameter setting groups
20.7.1 Functionality
Use the six different groups of settings to optimize the IED operation for different power
system conditions. Creating and switching between fine-tuned setting sets, either from the
local HMI or configurable binary inputs, results in a highly adaptable IED that can be
applied to a variety of power system scenarios.
1MRK 511 365-UUS A
Section 20
Basic IED functions
Phasor measurement unit RES670 2.1 ANSI 723
Technical manual