ABB Relion 670 Series Applications Manual page 604
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Also See for Relion 670 Series:
- Technical manual (1432 pages) ,
- Technical reference manual (1232 pages) ,
- Applications manual (944 pages)
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Section 24
Basic IED functions
output that is used to synchronize merging units that are not PTP compliant. As a side effect,
the GTM contains a GPS receiver and the REL acts as a backup of the GPS on the station bus.
On all access points, the
On the REL, the parameter
TIMESYNCHGEN:1/General) is set to "
If the GTM is used as a PPS output only, the
24.13.2.3
Process bus IEC/UCA 61850-9-2LE synchronization
When process bus communication (IEC/UCA 61850-9-2LE protocol) is used, it is essential that
the merging units are synchronized with the hardware time of the IED (see Technical manual,
section
can be used depending of the facilities of the merging unit.
If the merging unit supports PTP, use PTP. If PTP is used in the IED and the merging unit is not
PTP capable, then synchronize the merging unit from the IED via a PPS out from the GTM. If
PTP is used in the IED and the merging unit cannot be synchronized from the IED, then use
GPS-based clocks to provide PTP synch as well as sync to the merging unit.
If synchronization of the IED and the merging unit is based on GPS, set the parameter
SyncLostMode to BlockOnLostUTC in order to provide a block of protection functions
whenever the global common time is lost.
If PTP is not used, use the same synchronization method for the
unit provides. For instance, if the merging unit provides PPS as synchronization, use PPS as
HwSyncSrc . If either PMU or LDCM in GPS-mode is used, that is, the hardware and software
clocks are connected to each other,
merging unit to the IED is required. Either
merging unit uses, or the PPS output from the GTM module is used to synchronize the merging
unit. If the PPS output from the GTM module is used to synchronize the merging unit and PTP
is not used, the IED does not know how the merging unit is synchronized and the parameter
SyncLostMode must be set to NoBlock .
598
PTP parameter is " ON ".
FineSyncSource (under Configuration/Time/Synchronization/
Design of the time system (clock synchronization ) ). To achieve this, PTP, PPS or IRIG-B
If the IED is used together with a merging unit and no time synchronization is
available, for example, in the laboratory test, the IED will synchronize to the SV
data stream. During the re-synchronization, the protection functions will be
blocked once a second for about 45 ms, and this will continue for up to 10
minutes. To avoid this, configure PTP (IEEE 1588) to
where the merging unit is configured.
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GPS " if there is a GPS antenna attached.
FineSynchSource is not set.
HwSyncSrc is not used and other means to synchronize the
FineSyncSource is set to the same source that the
1MRK 511 401-UEN Rev. K
GUID-6E384BDB-5598-4108-99B4-0B4A4E1828B2 v5
HwSyncSrc as the merging
On for the access point
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