Table 41:
Possible cause values from XLNPROXY
Cause No Cause Description
Conditions
8
Blocked-by-Mode
The BEH input is 5.
2
Blocked-by-switching-hierarchy
The LOC input indicates that only local commands are
allowed for the breaker IED function.
-24
Blocked-for-open-cmd
The BLKOPN is active indicating that the switch is
blocked for open commands.
-25
Blocked-for-close-cmd
The BLKCLS is active indicating that the switch is
blocked for close commands.
9
Blocked-by-process
If the Blk input is connected and active indicating that the
switch is dynamically blocked. Or if the OPCAP input is
connected, it indicates that the operation capability of the
switch is not enough to perform the command.
5
Position-reached
Switch is already in the intended position.
-31
Switch-not-start-moving
Switch did not start moving within tStartMove.
-32
Persistent-intermediate-state
The switch stopped in intermediate state for longer than
tIntermediate.
-33
Switch-returned-to-init-pos
Switch returned to the initial position.
-34
Switch-in-bad-state
Switch is in a bad position.
-35
Not-expected-final-position
Switch did not reach the expected final position.
The OPCAP input and output are used for the CBOpCap data of a
XCBR respectively SwOpCap for a XSWI. The interpretation for the
command following is controlled through the setting
SwitchType
.
12.3.1.5
Reservation function (QCRSV and RESIN)
M16609-3 v4
The purpose of the reservation function is primarily to transfer interlocking
information between IEDs in a safe way and to prevent double operation in a bay,
switchyard part, or complete substation.
For interlocking evaluation in a substation, the position information from switching
devices, such as circuit breakers, disconnectors and grounding switches can be required
from the same bay or from several other bays. When information is needed from other
bays, it is exchanged over the station bus between the distributed IEDs. The problem
that arises, even at a high speed of communication, is a space of time during which the
information about the position of the switching devices are uncertain. The interlocking
function uses this information for evaluation, which means that also the interlocking
conditions are uncertain.
To ensure that the interlocking information is correct at the time of operation, a unique
reservation method is available in the IEDs. With this reservation method, the bay that
Section 12
1MRK 505 370-UUS A
Control
352
Busbar protection REB670 2.2 ANSI
Application manual
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