ABB REC650 Product Manual page 16

Bay control REC650 2.2
Product version: 2.2
In normal security, the command is processed and the
resulting position is not supervised. However with enhanced
security, the command is processed and the resulting
position is supervised.
Normal security means that only the command is evaluated
and the resulting position is not supervised. Enhanced
security means that the command is evaluated with an
additional supervision of the status value of the control
object. The command sequence with enhanced security is
always terminated by a CommandTermination service
primitive and an AddCause telling if the command was
successful or if something went wrong.
Control operation can be performed from the local HMI with
authority control if so defined.
IEC09000668 V1 EN-US
Figure 2. Select before operation with confirmation of command
Ok
Cancel
IEC09000669 V2 EN-US
Figure 3. Overriding of synchrocheck
The switch controller SCSWI initializes and supervises all
functions to properly select and operate switching primary
apparatuses. Each of the 10 switch controllers SCSWI may
handle and operate on one three-phase apparatus.
Each of the 3 circuit breaker controllers SXCBR provides the
actual position status and pass the commands to the primary
circuit breaker and supervises the switching operation and
positions.
16
IEC09000668-1-en.vsd
IEC09000669-2-en.vsd
Each of the 9 circuit switch controllers SXSWI provides the
actual position status and pass the commands to the primary
disconnectors and earthing switches and supervises the
switching operation and positions.
Features of the apparatus control function are:
• Operation of primary apparatuses
• Select-Execute principle to give high reliability
• Selection and reservation function to prevent
simultaneous operation
• Selection and supervision of operator place
• Command supervision
• Block/deblock of operation
• Block/deblock of updating of position indications
• Substitution of position indications
• Overriding of interlocking functions
• Overriding of synchrocheck
• Pole discordance supervision
• Operation counter
The apparatus control function is realized by means of a
number of function blocks designated:
• Bay control QCBAY
• Switch controller SCSWI
• Circuit breaker SXCBR
• Circuit switch SXSWI
The three latter functions are logical nodes according to IEC
61850-8-1. To realize the reservation function also the
function blocks Reservation input (RESIN) and Bay reserve
(QCRSV) are included in the apparatus control function.
Interlocking
The interlocking function blocks the possibility to operate
primary switching devices, for instance when a disconnector
is under load, in order to prevent material damage and/or
accidental human injury.
Each apparatus control function has interlocking modules
included for different switchyard arrangements, where each
function handles interlocking of one bay. The interlocking
function is distributed to each IED and is not dependent on
any central function. For the station-wide interlocking, the
IEDs communicate via the system-wide interbay bus (IEC
61850-8-1) or by using hard wired binary inputs/outputs. The
interlocking conditions depend on the circuit configuration
and apparatus position status at any given time.
For easy and safe implementation of the interlocking function,
the IED is delivered with standardized and tested software
interlocking modules containing logic for the interlocking
conditions. The interlocking conditions can be altered, to
meet the customer's specific requirements, by adding
configurable logic by means of the graphical configuration
tool.
The following interlocking modules are available:
1MRK 511 426-BEN B
M16909-3 v3
M13531-3 v4
ABB