5-106
F650 DIGITAL BAY CONTROLLER
GEK-106310-AF
5.5 CONTROL ELEMENTS
CHAPTER 5: SETPOINTS
5.5.2.3 Settings
There is only one synchrocheck element in the F650.
Settings description for element 25:
Function permission (Function):
This setting allows enabling and disabling the synchrocheck element.
Voltage Level determination settings for busbar and line:
This setting group allows determining the voltage levels considered as dead and live for line and busbar voltage.
Dead Bus voltage level (Dead Bus Level):
Voltage level considered as dead bus
Live Bus voltage level (Live Bus Level):
Voltage level considered as live bus
Dead Line voltage level (Dead Line Level):
Voltage level considered as dead line
Live Line voltage level (Live Line Level):
Voltage level considered as live line
Synchrocheck settings (live bus, live line):
F650 relays verify synchronism by establishing and comparing three basic parameters: the difference in module and angle
of voltage phasors, and the frequency slip of a phasor related to the other one. synchrocheck settings include a fourth time
setting, that allows using an anticipative algorithm to issue a closing signal.
Voltage Difference (Max Volt Difference):
Maximum Difference in module between the line and busbar
voltage to allow a closing in the synchrocheck element.
Angle Difference (Max Angle Difference):
Maximum Difference in angle between the line and busbar
voltage to allow a closing in the synchrocheck element.
Frequency Slip (Max Freq Difference):
Maximum difference in frequency (slip) between both voltage
values to be compared in the synchrocheck element.
Breaker Closing time (Time):
Estimated breaker Closing time, used for establishing the Closing
order in a moment that allows the busbar and line voltages to be
in phase.
This time is considered if the relative slip is higher than 20 mHz; in this case, an anticipative algorithm is
executed to calculate the closing signal with the necessary advance for the breaker effective Closing to be
produced when voltages are in phase. The limit for the anticipative algorithm is two times the maximum
Setpoint > Control Elements > Synchrocheck
setting Description
Name
Default Value
Step
Range
Function permission
Function
DISABLED
N/A
[DISABLED – ENABLED]
Dead bus voltage level
Dead Bus Level
10.00
0.01 V
[0.00 : 300.00]
Live bus voltage level
Live Bus Level
50.00
0.01 V
[0.00 : 300.00]
Dead line voltage level
Dead Line Level
10.00
0.01 V
[0.00 : 300.00]
Live line voltage level
Live Line Level
50.00
0.01 V
[0.00 : 300.00]
Voltage Difference
Max Volt Difference
10.00
0.01 V
[2.00 : 300.00]
Angle Difference
Max Angle Difference
10.0
0.1 Deg [2.0 : 80.0]
Frequency Slip
Max Freq Difference
20
10 mHz [10 : 5000]
Breaker Closing time
Time
0.50
0.01 s
[0.01 : 1.00]
Dead Line – Dead Bus Function permission
DL-DB Function
DISABLED
N/A
[DISABLED – ENABLED]
Live Line – Dead Bus Function permission
LL-DB Function
DISABLED
N/A
[DISABLED – ENABLED]
Dead Line – Live Bus Function permission
DL-LB Function
DISABLED
N/A
[DISABLED – ENABLED]
Snapshot event generation
Snapshot Events
ENABLED
N/A
[DISABLED – ENABLED]
Summary of Contents for F650
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