Iec 61850 Quality Expander Qualexp - ABB RET650 Applications Manual
Relion 650 series, transformer protection
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Also See for RET650:
- Technical manual (670 pages) ,
- Commissioning manual (112 pages) ,
- Product manual (70 pages)
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Section 16
Station communication
16.3.3
322
•
SYNCH signal on the MUx function block indicates that protection functions
are blocked due to loss of internal time synchronization to the IED. Since
SyncLostMode is set to No 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 SyncLostMode
is set to No block but 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.
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
119
depicts the usage of the quality expander block in ACT.
IEC16000073 V1 EN-US
Figure 119:
Quality expander block in ACT
The expanded quality bits are visible on the outputs as per IEC 61850-7-3 standard.
When written to IED, the configuration will show the expanded form of the
respective MU channel quality information during the online monitoring in the
ACT.
The quality expander function is intended for monitoring purposes,
not for being used in a logic controlling the behaviour of the
protection or control functions in the IED. The function outputs are
updated once every second and, therefore, do not reflect the quality
bits in real time.
1MRK 504 169-UEN A
GUID-9C5DC78E-041B-422B-9668-320E62B847A2 v1
IEC16000073-1-en.vsdx
Transformer protection RET650 2.2 IEC
Application manual
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