• SyncMode: set to NoSynch. This means that the IED do not care if the MU
indicates loss of time synchronization.
• TSYNCERR signal will not be set since there is no configured time
synchronization source
• SYNCH signal on the MU_4I_4U function block indicates when protection
functions are blocked due to loss of internal time synchronization to the IED.
Since AppSynch is set to NoSynch this signal will not be set.
• MUSYNCH signal on the MU_4I_4U function block will be set if the datastream
indicates time synchronization is lost. However, protection functions will not be
blocked.
To get higher availability in the protection functions, it is possible to avoid blocking if
time synchronization is lost when there is a single source of analog data. This means
that if there is only one physical MU and no TRM, parameter AppSynch can be set to
NoSynch but parameter HwSyncSrc can still be set to PPS. This will keep analog and
binary data correlated in disturbance recordings while not blocking the protection
functions if PPS is lost.
4.3.3 Setting parameters
Table 241: MU1_4I_4U Non group settings (basic)
Name
Values (Range) Unit Step Default Description
SVId 0 - 35 - 1 ABB_MU0101 MU identifier
SmplGrp 0 - 65535 - 1 0 Sampling group
CT_WyePoint1 FromObject
ToObject
- - ToObject ToObject= towards protected object,
FromObject= the opposite
CT_WyePoint2 FromObject
ToObject
- - ToObject ToObject= towards protected object,
FromObject= the opposite
CT_WyePoint3 FromObject
ToObject
- - ToObject ToObject= towards protected object,
FromObject= the opposite
CT_WyePoint4 FromObject
ToObject
- - ToObject ToObject= towards protected object,
FromObject= the opposite
Table 242: MU1_4I_4U Non group settings (advanced)
Name
Values (Range) Unit Step Default Description
SynchMode NoSynch
Init
Operation
- - Operation Synchronization mode
Section 4 1MRK504116-UUS C
Station communication
828
Application manual
To Next Page
Loading...
Need help?
General
