Synchronizing and loading
Synchronizing
The synchronization can be performed
manually or automatically. If automatic synchronization is selected, the
control system takes care of the complete synchronization sequence.
Manual synchronization is performed
from the synchronizing control unit.
1.0 Select the breaker to be synchronized.
A generator breaker is selected
by turning the "synchronising" switch on the manual control unit.
- A common circuit breaker is selected with the corresponding button in the mimic diagram on the common control panel.
2.0 Adjust the generator frequency to be as near
the reference frequency as possible.
- Follow the readings on the frequency meters.
3.0 Adjust the generator voltage to be as near the
reference voltage as possible.
- Follow the readings on the voltage meters.
4.0 Check the synchronoscope
indication. The synchronoscope indication should rotate slowly clockwise,
indicating that the generator frequency is slightly higher than the reference
frequency. Adjust the frequency as required.
- If the indication rotates quickly clockwise, the generator frequency is too high.
- If the indication rotates anticlockwise, the generator frequency is too low.
When all synchronization conditions
are fulfilled, a green LED at the top of the synchronoscope is illuminated.
5.0 Give a close order to the circuit
breaker slightly before the synchronoscope indication reaches the top of the
display.
Loading
the generating set
Note!
In automatic mode, the generating set
is automatically loaded (according to the settings entered by the operator at
the WOIS workstation), once the generator breaker is closed.
Note!
In island operation, the load of the
generating set is determined by the system load. To control the load sharing,
the operator can adjust the speed reference and the voltage reference of the
generating set.
Provided that the engine is properly
preheated, it can be loaded immediately after the start. To prolong the
lifetime of engine components, the load should be applied gradually.
1 Check that the generator breaker is
closed.
2 Check that the "generating set
control" selector switch on the manual control unit is in position
"manual".
3 Check that the engine and generator
control mode selector switches are in the correct positions.
4 Adjust the active power of the
generating set with the "fuel decrease - increase" switch.
5 Adjust the reactive power of the generating
set with the "excitation decrease - increase" switch.
thanks so much.. Nice share. Have a nice day !friv ,friv school
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