GE Multilin W650, Instruction Manual

Page: 412 / 622

12-6 W650 Wind Generator Protection System GEK-113032A
12.2 EXAMPLE 2: TOC PROT RECLOSING SETTINGS PROCEDURE 12 APPLICATION EXAMPLES
12
12.2.4 PROCEDURE TO SET THE RECLOSER
Under
SETPOINT
⇓
PROTECTION ELEMENTS
⇒ ⇓
OTHER FUNCTIONS
⇒ ⇓
RECLOSER
12.2.5 PROCEDURE TO SET THE SYNCHRO CHECK
Under
SETPOINT
⇓
PROTECTION ELEMENTS
⇒ ⇓
OTHER FUNCTIONS
⇒ ⇓
SYNCHROCHECK
The synchrocheck function and its permission to close is a condition in the present exercise to allow the recloser to give the
different programmed shots. Should not this condition be required these settings are non relevant, but if does like in the
present case the synchrocheck function must be set as follows
Additional Comments on Scheme
The programmed operation of a TOC protection with reclosing and synchrocheck features for the W650 relay is shown in
Figure 12–1: Some conclusions follows:
The recloser cycle ends at lockout status since a permanent fault remains after two unsuccessful reclosing trials.
The holding time for reclosing conditions can be very low since the processor internal time to check them is instantaneously
if they are present at this moment. Depending in the application reclosing conditions might come later especially when
commands are sent from dispatching center. If does then this timing must be set properly.
NAME VALUE
Function Enabled
Max. Number of shots 2
Dead Time 1 2.0s
Dead Time 2 4.0s
Dead Time 3 ---
Dead Time 4 ---
Reclaim Time 0.05s
Condition Permission Enabled
Hold Time 0.1s
Reset Time 1.9s
NAME VALUE
Function Enabled
Dead Bus Level 10V
Live Bus Level 50V
Dead Line Level 10V
Live Line Level 50V
Max. Volt Difference 10
Max. Angle Difference 10º
Max. Freq. Difference 20mHz
Breaker Closing Time 0.07s
DL-DB Function Disabled
LL-DB Function Disabled
DL-LB Function Disabled