CHAPTER 5: SETPOINTS
5.5 CONTROL ELEMENTS
GEK-106310-AF
F650 DIGITAL BAY CONTROLLER
5-107
angle difference. This means that if the product of the frequency slip multiplied by the breaker closing time
covers an angle greater than two times the maximum angle, closing is not allowed. For further information
see 5.5.4.5.
Closing permission logic settings:
In case that the voltage at one or both ends of the breaker is null, the synchronism element cannot establish the necessary
parameters to give closing conditions, and therefore it does not issue synchronism permission. For those situations where
the user wants to enable the closing permission in a condition of loss of one or both voltages at both ends of the breaker,
F650 elements incorporate closing permission logics for the cases of: dead line-dead bus, live line-dead bus and dead line-
live bus.
Dead line- Dead Bus Function permission (DL-DB Function):
Enabling this Function allows issuing a
Closing permission signal in dead line and dead bus Condition (without voltage at both sides of the breaker).
Live line- Dead Bus Function permission (LL-DB Function):
Enabling this Function allows to issue a Closing
permission signal in live line and dead bus Condition (without voltage at the sides of the breaker that
corresponds to the busbar voltage)
Dead line- Live Bus Function permission (DL-LB Function):
Enabling this Function allows issuing a Closing
permission signal in live line and dead bus Condition (without voltage at the sides of the breaker that
corresponds to the line voltage).
Snapshot event:
The snapshot event setting enables or disables the snapshot event generation for this element.
5.5.2.4 Synchrocheck states
Internal signals provided by the F650 (
Actual> Status > Control Elements > Synchrocheck
) for the synchronism element
are as follows:
Table 5-74: Synchrocheck internal states
SYNCROCHECK BLK INP:
Block signal for the synchrocheck element, configurable at
Setpoint > Relay
Configuration > Control Elements
SYNCROCHECK OP:
Closing permission signal in live line-live bus conditions with open breaker.
SYNCHK CLOSE PERM:
General Closing permission of the Synchronism element. It contemplates all possible
situations, live line-live bus conditions, and the closing permission logics (dead line-
dead bus, live line- dead bus, dead line-live bus).
Note
: in case the Function is
disabled, the Closing permission signal is activated in order not to interfere with
possible logics where it is included. If the synchronism element is enabled, this signal
is only activated in the closing conditions established by setting.
SYNCROCHECK COND OP:
Closing permission according to permission logics (DL-DB, LL-DB, DL-LB).
DL-DB OPERATION: Closing permission in dead line – dead bus condition.
DL-LB OPERATION: Closing permission in dead line – live bus condition.
SYNCHROCHECK ACTUAL VALUES
SYNCROCHECK BLK INP
SYNCROCHECK OP
SYNCHK CLOSE PERM
SYNCROCHECK COND OP
DL-DB OPERATION
DL-LB OPERATION
LL-DB OPERATION
SLIP CONDITION
BUS FREQ > LINE FREQ
BUS FREQ < LINE FREQ
VOLTAGE DIFFERENCE
FREQUENCY DIFFERENCE
Summary of Contents for F650
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