ABB Relion 670 Series Applications Manual page 563

1MRK 511 401-UEN Rev. K
IEC/UCA 61850-9-2LE
IEC10000075 V2 EN-US
Figure 270: Setting example without time synchronization
It is also possible to use IEC/UCA 61850-9-2LE communication without time synchronization.
Settings on the local HMI under Main menu/Configuration/Time/Synchronization/
TIMESYNCHGEN:1/IEC61850-9-2:
HwSyncSrc : set to Off
•
SyncLostMode : set to No block to indicate that protection functions are not blocked
•
SyncAccLevel : set to unspecified
•
Two status monitoring signals with no time synchronization:
• SYNCH signal on the MUx function block indicates that protection functions are blocked
due to loss of internal time synchronization to the IED. Since
block , this signal is not set.
• MUSYNCH signal on the MUx function block is set if the datastream indicates time
synchronization loss. However, protection functions are not blocked.
To get higher availability in protection functions, it is possible to avoid blocking during time
synchronization loss if there is a single source of analog data. This means that if there is only
one physical MU and no TRM, parameter
HwSyncSrc is still set to PPS . This maintains analog and binary data correlation in disturbance
recordings without blocking protection functions if PPS is lost.
21.3.5 IEC 61850 quality expander QUALEXP
The quality expander component is used to display the detailed quality of an IEC/UCA
61850-9-2LE analog channel. The component expands the channel quality output of a Merging
Unit analog channel received in the IED as per the IEC 61850-7-3 standard. This component can
be used during the ACT monitoring to get the particular channel quality of the Merging Unit.
Figure 271
Bay control REC670
Application manual
IED
Data
MU
IEC10000075=2=en=Original.vsd
depicts the usage of the quality expander block in ACT.
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SyncLostMode is set to No block but parameter
Section 21
Station communication
SyncLostMode is set to No
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