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.
15.2.1.4 Proxy for signals from switching device via GOOSE XLNPROXY
The purpose of the proxy for signals from switching device via GOOSE
(XLNPROXY) is to give the same internal representation of the position status and
control response for a switch modeled in a breaker IED as if represented by a SXCBR
or SXSWI function.
The command response functionality is dependent on the connection of the execution
information, XIN, from the SCSWI function controlling the represented switch.
Otherwise, the function only reflects the current status of the switch, such as blocking,
selection, position, operating capability and operation counter.
Since different switches are represented differently on IEC 61850, the data that is
mandatory to model in IEC 61850 is mandatory inputs and the other useful data for the
command and status following is optional. To make it easy to choose which data to use
for the XLNPROXY function, their usage is controlled by the connection of each
data’s signal input and valid input. These connections are usually from the
GOOSEXLNRCV function (see Figure
236 and Figure 237).
1MRK 502 071-UEN - Section 15
Control
Generator protection REG670 2.2 IEC and Injection equipment REX060, REX061, REX062 503
Application manual
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