FORCED OPERATION
Start of FORCED OPERATION
• Generating set power units switched off.
• Generating set start request.
• The generating sets increase in speed.
• Speed stabilisation delay.
• Order of excitation for each generating set at nominal speed; the voltage is then quickly established on the busbar.
• Start of active power distribution.
• Resumption of application at rated voltage and frequency.
The Kerys PLCs remain in “AUTO” mode
The installation is supplied by the generating sets
End of FORCED OPERATION
•
Generating set power units switched on.
• Cooling delay.
• Generating sets stopped and set to standby.
The Kerys PLCs remain in “AUTO” mode
The installation is supplied by the grid
Manual power plant operation
This mode of operation is selected with the “MANU” key. This enables the operator to start and stop the generating sets one by one via
the MMI keypad. The generating set power unit is switched off manually with synchronisation of each generating set to the busbar
using the MMI keys “+F”, “-F”, “+V” and “-V”. The distribution of power among the generating sets remains automatic.
The safety
devices of the generating sets remain active in this mode of operation.
This mode of operation is the responsibility of the operator.
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