Manual 37259C
SPM-D11 - Synchronizing Unit
Page 50/79
© Woodward
Volt. controller
Derivat.Tv=0.00s
SPM-D11/LSXR
'ANALOG'
Voltage controller - derivative-action time
0.00 to 6.00 s
The derivative-action time TV represents the D-component of the PID controller.
The D-component of the controller output becomes effective with large variations
of the offset, e.g. in case of load-shedding. The lower the derivative-action time is
configured, the higher the controller reaction is. If TV is configured as 0.00 s, the
D-component of the PID loop is disabled. Refer to "Analog Controller Outputs" on
page 29.
Power Factor Control
Pow.fact.control
ON
Power factor controller
ON/OFF
ON
................A load-independent control of the power
ϕ
factor is carried out dur-
ing mains/parallel operation. The power factor cannot be measured
accurately and the controller is automatically locked to prevent insta-
bility when small currents (less than 5 % of the CT secondary rated
current) are detected. The following screen masks of this option will
be displayed.
OFF
..............The frequency is not controlled, and the following screens of this op-
tion will not be displayed.
Pow.fact.control
Set point = 0.00
Power factor controller set point
i0.70 to 1.00 to k0.70
While operating in a mains/parallel operation, the reactive load is controlled so that
this preset power factor is maintained when the generator is in a steady state. The
letters "i" stands for "inductive = lagging" (overexcited generator) and "c" for "ca-
pacitive = leading" (underexcited generator) reactive load. This parameter is only
enabled when operating in mains/parallel.
Pow.fact.control
Ramp 0.00/s
Set point ramp of the power factor controller
0.01 to 0.30 /s
The set point ramp determines how fast the power factor set point approaches its
target value. The slope of the ramp is linear.