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short circuit breaking capability, for example, circuit breakers, disconnectors, earthing
switches etc.
The purpose of these functions is to provide the actual status of positions and to perform the
control operations, that is, pass all the commands to the primary apparatus via output boards
and to supervise the switching operation and position.
Switches have the following functionalities:
•
Local/Remote switch intended for the switchyard
•
Block/deblock for open/close command respectively
•
Update block/deblock of position indication
•
Substitution of position indication
•
Supervision timer that the primary device starts moving after a command
•
Supervision of allowed time for intermediate position
•
Definition of pulse duration for open/close command respectively
The realizations of these functions are done with SXCBR representing a circuit breaker and
with SXSWI representing a circuit switch that is, a disconnector or an earthing switch.
Circuit breaker (SXCBR) can be realized either as three one-phase switches or as one three-
phase switch.
The content of this function is represented by the IEC 61850 definitions for the logical nodes
Circuit breaker (SXCBR) and Circuit switch (SXSWI) with mandatory functionality.
3.1.4
Setting guidelines
M16669-3 v5
The setting parameters for the apparatus control function are set via PCM600.
3.1.4.1
Bay control (QCBAY)
M16670-3 v7
If the parameter
AllPSTOValid is set to No priority, all originators from local and remote are
accepted without any priority.
If the parameter
RemoteIncStation is set to Yes, commands from IEC 61850-8-1 clients at both
station and remote level are accepted, when the QCBAY function is in Remote. If set to
No, the
command LocSta controls which operator place is accepted when QCBAY is in Remote. If
LocSta is true, only commands from station level are accepted, otherwise only commands
from remote level are accepted.
The parameter
RemoteIncStation has only effect on the IEC 61850-8-1
communication. Further, when using IEC 61850 edition 1 communication, the
parameter should be set to
Yes, since the command LocSta is not defined in
IEC 61850-8-1 edition 1.
3.1.4.2
Switch controller (SCSWI)
M16673-3 v6
The parameter
CtlModel specifies the type of control model according to IEC 61850. The
default for control of circuit breakers, disconnectors and earthing switches the control model
is set to
SBO Enh (Select-Before-Operate) with enhanced security.
When the operation shall be performed in one step, and no monitoring of the result of the
command is desired, the model direct control with normal security is used.
1MRK 511 445-UEN B
Section 3
Control
Switchgear control unit SAM600-IO
21
Application manual
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