ABB REG650 Product Manual page 20

Generator protection REG650
Product version: 1.3
IEC09000668 V1 EN
Figure 6. Select before operation with confirmation of command
Ok
Cancel
IEC09000669 V2 EN
Figure 7. Overriding of synchrocheck
The switch controller SCSWI initializes and supervises all
functions to properly select and operate switching primary
apparatuses. Each of the 8 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.
Each of the 7 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.
Interlocking
The interlocking functionality blocks the possibility to operate
high-voltage switching devices, for instance when a
disconnector is under load, in order to prevent material damage
and/or accidental human injury.
Each control IED has interlocking functions for different
switchyard arrangements, each handling the interlocking of one
bay. The interlocking functionality in each IED is not dependent
on any central function. For the station-wide interlocking, the
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IEC09000668-1-en.vsd
IEC09000669-2-en.vsd
IEDs communicate via the station bus or by using hard wired
binary inputs/outputs.
The interlocking conditions depend on the primary bus
configuration and status of any breaker or switch at any given
time.
Bay control QCBAY
The Bay control QCBAY function is used together with Local
remote and local remote control functions to handle the
selection of the operator place per bay. QCBAY also provides
blocking functions that can be distributed to different
apparatuses within the bay.
Local remote LOCREM /Local remote control LOCREMCTRL
The signals from the local HMI or from an external local/remote
switch are applied via the function blocks LOCREM and
LOCREMCTRL to the Bay control QCBAY function block. A
parameter in function block LOCREM is set to choose if the
switch signals are coming from the local HMI or from an external
hardware switch connected via binary inputs.
Circuit breaker control for circuit breakers, CBC1 and CBC2
The CBC1 and CBC2 consists of 3 functions and 2x3 functions
respectively:
• SCILO - The Logical node for interlocking. SCILO function
contains the logic to enable a switching operation, and
provides the information to SCSWI wether it is permitted to
operate due to actual switchyard topology. The
interlocking conditions are generated in separate function
blocks containing the interlocking logic.
• SCSWI - The Switch controller initializes and supervises all
functions to properly select and operate switching primary
apparatuses. The Switch controller may handle and
operate on one three-phase device.
• SXCBR - The circuit breaker controller SXCBR provides
the actual position status and pass the commands to the
primary circuit breaker and supervises the switching
operation and positions.
Logic rotating switch for function selection and LHMI
presentation SLGGIO
The logic rotating switch for function selection and LHMI
presentation SLGGIO (or the selector switch function block) is
used to get an enhanced selector switch functionality
compared to the one provided by a hardware selector switch.
Hardware selector switches are used extensively by utilities, in
order to have different functions operating on pre-set values.
Hardware switches are however sources for maintenance
issues, lower system reliability and an extended purchase
portfolio. The logic selector switches eliminate all these
problems.
Selector mini switch VSGGIO
The Selector mini switch VSGGIO function block is a
multipurpose function used for a variety of applications, as a
general purpose switch.
1MRK 502 050-BEN B
ABB