Toshiba GR200 Series Instruction Manual page 797

Line differential protection ied
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Cancel logic in SBO mode
4.4.2
In the SBO control mode the reception of the cancel command is possible when the cancel
conditions are satisfied. Accordingly, the function can discard the select command; finally, the
operation returns to the initial stage (i.e., "Wait for a command".)
Receiving "Cancel" from the remote-end
(i)
Figure 4.4-7 outlines the reception of the cancel command from the remote end.
Wait for a command
Select logic
Command Reset from the
remote-end
Figure 4.4-7 Outline of cancel command from the remote-end
Input point required mapping
(ii)
Figure 4.4-8 shows the cancel logic when a "Cancel command (Remote-Cancel)" signal enters
the OPTIM function. The input-point "OPTR01_CONTROL_REQ" is the same point of the
Figure 4.4-5.
Input
Command "Cancel"
529001 700C016D08
OPTR01_CONTROL_REQ
†Note: The criteria "unmatched conditions" are determined when "Test-bit status" in a
command is not identical to "IED test status".
Wait for a next command
Cancel by the remote-end
Signal reception in
IEC61850
Operate logic
Operate command
Operate logic
OPTIM function (Function ID: 529001)
Cancel command
Unmatched condition
detected†
Figure 4.4-8 Cancel from the remote-end
- 774 -
Cancel
Cancel logic
decision
510001 7001016D08
Cancel logic in OPTR
&
&
6F2S1914 (0.49)
Success
Do nothing
Failed
Output
To "Wait for a command"
Successes to cancel
"Do nothing"
Operation Failed
GRL200 (Soft 033 & 037)

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