GE D90 Plus - Page 347

CHAPTER 7: PROTECTION CONTROL ELEMENTS
D90
PLUS
LINE DISTANCE PROTECTION SYSTEM – INSTRUCTION MANUAL 337
Open Pole Remote Current Pickup
Range: 0.000 to 30.000 pu in steps of 0.001
Default: 0.050 pu
This setting specifies the pickup level for the remote-end current estimated by the relay
as the local current compensated by the calculated charging current. The latter is
calculated based on the local voltages and the capacitive reactances of the line. This
setting is relevant if the open pole condition at the remote end of the line is to be sensed
and utilized by the relay (via the OPEN POLE REM OP operand).
Events
Range: Enabled, Disabled
Default: Disabled
This setting enables and disables the logging of open pole detector events in the
sequence of events recorder.
The figures show open pole detector logic.
Figure 276: Open pole detector logic, sheet 1 of 2
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