ABB Relion REG670, Technical Manual

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Four types of function blocks are available to cover most of the control and
supervision within the bay. These function blocks are interconnected to form a control
function reflecting the switchyard configuration. The total number used depends on
the switchyard configuration. These four types are:
• Bay control QCBAY
• Switch controller SCSWI
• Circuit breaker SXCBR
• Circuit switch SXSWI
The functions Local Remote (LOCREM) and Local Remote Control
(LOCREMCTRL), to handle the local/remote switch, and the functions Bay reserve
(QCRSV) and Reservation input (RESIN), for the reservation function, also belong to
the apparatus control function. The principles of operation, function blocks, input and
output signals and setting parameters for all these functions are described below.
14.3.3 Error handling
Depending on the error that occurs during the command sequence the error signal will
be set with a value. Table
397 describes the cause values given on local HMI. The
translation to AddCause values specified in IEC 61850-8-1 is shown in Table 398 . For
IEC 61850-8-1 edition 2 only addcauses defined in the standard are used, for edition
1 also a number of vendor specific causes are used. The values are available in the
command response to commands from IEC61850-8-1 clients. An output
L_CAUSE
on the function block for Switch controller (SCSWI), Circuit breaker (SXCBR) and
Circuit switch (SXSWI) indicates the latest value of the cause during the latest
command.
Table 397: Values for "cause" signal
Cause
number
Name Description Supported
0 None Control action successfully executed X
1 Not-supported Given for Cancel request with Direct Control in Ready
state
X
2 Blocked-by-
switching-hierarchy
Not successful since one of the downstream Loc
switches like in CSWI has the value TRUE
X
3 Select-failed Cancelled due to an unsuccessful selection (select
service)
X
4 Invalid-position Control action is aborted due to invalid switch position
(Pos in XCBR or XSWI)
X
5 Position-reached Switch is already in the intended position (Pos in XCBR
or XSWI)
X
6 Parameter-change-
in-execution
Control action is blocked due to running parameter
change
X
7 Step-limit Control action is blocked, because tap changer has
reached the limit (EndPosR or EndPosL in YLTC)
X
8 Blocked-by-Mode Control action is blocked, because the LN (CSWI or
XCBR/XSWI)is in a mode (Mod) which doesn’t allow any
switching
X
Table continues on next page
Section 14
1MRK502052-UEN B
Control
706
Technical manual