Woodward GCP-30 Series - Page 69

Manual 37365A GCP-30 Series Packages - Genset Control
© Woodward Page 69/179
Synchronization
Synchronization of the GCB
GCB synchronization will be performed with frequency and voltage correction when the following conditions
have been met:
NOTE
The GCP-30series controller does not have maximum phase angle limit for synchronization. The GCP-
30 uses the parameters "Closing time GCB" (Parameter 120) and/or "Closing time MCB" (Para-
meter 121) to
calculates the optimum time for a breaker closure signal to be issued with the measured
frequency differential. The typical maximum tolerances are 1.5° to 3.5° with a frequency differential
ranging of 0.2 Hertz to 0.49 hertz. If the parameters "Closing time GCB" and/or "Closing time MCB" are
not configured accurately, these tolerances will increase due to inaccurate information being provided
for the close command calculation resulting in a larger phase angle at closing.
Automatic mode
• The control has been placed in the AUTOMATIC operation mode
• The circuit breaker logic (Parameter 111) is configured as "PARALLEL" (m
ains parallel operation), "IN-
TERCHANGE" (mains interchange (import/export) real power control), or "CLOSED TRANSIT." (make-
before-break/overlap synchronization)
• An F2 or F3 class alarm has not been detected
• The "Automatic 1" (terminal 3) or "Automatic 2" (terminal 5) discrete input has been energized, a remote
starting signal has be activated via the interface, or an emergency power operation has been initiated resulting
in additional engines being started
• The busbar is energized (the control measures voltage on the bus)
• The engine is running and the generator voltage and frequency are within the permissible limits
• The delayed engine monitoring (Parameter 271) has expired (this does not apply in the case of emergency
power)
•
The rotating field of the generator and the mains voltages are identical and no alarms are displayed
Manual mode
• The control has been placed in the MANUAL operation mode
• The circuit breaker logic (Parameter 111) is configured as "PARALLEL" (m
ains parallel operation), "IN-
TERCHANGE" (mains interchange (import/export) real power control), or "CLOSED TRANSIT." (make-
before-break/overlap synchronization)
• An F2 or F3 class alarm has not been detected
• The busbar is energized (the control measures voltage on the bus)
• The engine is running and the generator voltage and frequency are within the permissible limits
• The "GCB ON" push-button has been pressed
• The rotating field of the generator and the mains voltages are identical and no alarms are displayed
Load test mode
• The control has been placed in the MANUAL operation mode
• The circuit breaker logic (Parameter 111) is configured as "PARALLEL" (m
ains parallel operation), "IN-
TERCHANGE" (mains interchange (import/export) real power control), or "CLOSED TRANSIT." (make-
before-break/overlap synchronization)
• An F2 or F3 class alarm has not been detected
• The busbar is energized (the control measures voltage on the bus)
• The engine is running and the generator voltage and frequency are within the permissible limits
• The "GCB ON" push-button has been pressed
• The rotating field of the generator and the mains voltages are identical and no alarms are displayed