Functions
6-176
7SJ63 Manual
C53000-G1140-C120-1
6.20.2 Steps in the Command Sequence
Safety mechanisms in the command sequence ensure that a command can only be
released after a thorough check of preset criteria has been successfully concluded.
Standard Interlocking checks are provided for each individual control command. Ad-
ditionally, user-defined interlocking conditions can be programmed separately for
each command. The actual execution of the command is also monitored afterwards.
The entire sequence of a command is described briefly in the following:
Check Sequence
•
Command Entry (e.g. using the keypad on the local user interface of the device)
−
Check Password
→
Access Rights
−
Check Switching Mode (interlocking activated/deactivated)
→
Selection of Deac-
tivated Interlocking Recognition
•
User configurable Interlocking checks that can be selected for each command
−
Switching Authority (local, remote)
−
Device Position (scheduled vs. actual comparison)
−
Zone Controlled/Field Interlocking/ (logic using CFC)
−
System Interlocking (centrally, using SCADA system or substation controller)
−
Double Operation (interlocking against parallel switching operation)
−
Protection Blocking (blocking of switching operations by protective functions)
•
Fixed Command Checks
−
Internal process time (software watch dog which checks the time for processing
the control action between initiation of the control and final close of the relay con-
tact. After 1 second the control action will be aborted).
−
Setting Modification in Process (if setting modification is in process, commands
are denied or delayed)
−
Equipment not Present at Output (If a circuit breaker or other operable equipment
is not configured to a binary output, then the command is denied)
−
Output Block (if an output block has been programmed for the circuit breaker,
and is active at the moment the command is processed, then the command is
denied)
−
Component Hardware Malfunction
−
Command in Progress (only one command can be processed at a time for one
circuit breaker or switch)
−
1-of-n-check (for schemes with multiple assignments, such as common ground,
whether a command has already been initiated for the affected output relay is
checked).
Monitoring the
Command Execu-
tion
−
Interruption of a Command because of a Cancel Command
−
Running Time Monitor (feedback message monitoring time)
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Содержание siprotec 7SJ63
Страница 16: ...xiv 7SJ63 Instruction Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 28: ...Introduction 1 12 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 112: ...SIPROTEC 4 Devices 4 38 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 346: ...Functions 6 182 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 494: ...Technical Data 10 48 7SJ63 Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...
Страница 604: ...Index Index 6 7SJ63 Instruction Manual C53000 G1140 C120 1 w w w E l e c t r i c a l P a r t M a n u a l s c o m ...