ABB Relion 650 Series Applications Manual page 140

Section 10
Control
IED
. . .
IEC09000260 V2 EN-US
Figure 52: Application principle for an alternative reservation solution
Bay control (QCBAY)
The Bay control (QCBAY) is used to handle the selection of the operator place for the bay. The
function gives permission to operate from two types of locations either from Remote (for
example, control centre or station HMI) or from Local (local HMI on the IED) or from all (Local and
Remote). The Local/Remote switch position can also be set to Off, which means no operator place
selected that is, operation is not possible neither from local nor from remote.
QCBAY also provides blocking functions that can be distributed to different apparatuses within
the bay. There are two different blocking alternatives:
• Blocking of update of positions
• Blocking of commands
The function does not have a corresponding functionality defined in the IEC 61850 standard, which
means that this function is included as a vendor specific logical node.
134
IED
RES_EXT
GOOSEINTLKRCV
RESGRANT
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SCSWI
SELGGIO
SELECTED SELECT1
Other SCSWI in the bay to SELGGIO
Station bus
1MRK 505 287-UUS B
OR
IEC09000260_2_en.vsd
M16595-3 v5
Busbar protection REB650
Application manual