Woodward 2301E-ST, Инструкция по установке и эксплуатации

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Manual 26694 2301E-ST
Woodward 53
07 ON LINE PROP GAIN dflt=5.0 (0.01, 100.0)
Determines how fast the control responds to an error in turbine speed from the speed-reference setting.
The Proportional Gain is used to provide stable control of the turbine in a loaded condition.
08 ON LINE INT GAIN dflt=1.8 (0.01, 50.0)
Compensates for the lag time of the turbine. It adjusts the time required for the control to return the speed
to zero error after a disturbance. The Integral Gain is adjusted to prevent slow hunting and to minimize
speed overshoot after a load disturbance in a loaded condition.
09 ON LINE DERIV RATIO dflt=20.0 (0.01, 100.0)
Compensates for the actuator system time constant. Increasing the value makes the actuator transient
performance increase in a loaded condition.
10 ON LINE WINDOW WIDTH 1 (RPM) dflt=60.0 (1.00, 200.0)
The magnitude (in rpm) of speed error at which the control automatically switches to fast response. The
control uses the absolute value of speed error to make this switch. The absolute value is the difference
between the speed reference and the speed. A Window Width too narrow will result in cycling that always
factors in the Gain Ratio (see Figure 3-14).
11 ON LINE GAIN RATIO dflt=1.0 (1.00, 10.0)
The ratio of the Gain setting at steady state to the Gain setting during transient conditions. The Gain Ratio
operates in conjunction with the Window Width and Gain adjustments by multiplying the Gain set point by
the Gain Ratio when the speed error is greater than the Window Width. This makes the control dynamics
fast enough to minimize engine-speed overshoot on start-up and to reduce the magnitude of speed error
when loads are changing. This allows a lower gain at steady state for better stability and reduced steady-
state actuator linkage movement (see Figure 3-14).
12 USING ON LINE DYNAMICS?
Displays TRUE when ON LINE Dynamic Settings are being used in the control. Displays FALSE when the
OFF LINE dynamics are being used in the control.
13 USE LOAD REJECTION? dflt=FALSE (FALSE, TRUE)
Load Rejection is used when the possibility of large load transients could trip the turbine out on
overspeed. For example, when a generator breaker opens, while load is on the turbine. This logic, when
set to True, will sample the fuel demand setting at the time the breaker is closed, will limit the Maximum
PID output to this value, and will pulse the Integral Gain value of the PID, if the speed changes faster then
the values listed: LD REJ SPD CHG, and LD REJ PERCENT SPEED).
14 LD REJ SPD CHG (RPM/SEC) dflt=50.0 (50.0, 250.0)
This value when exceeded, and the USE LOAD REJECTION? Value is true, and the LD REJ PERCENT
SPEED (%) is exceeded, will enable the load rejection logic.
15 LD REJ PERCENT SPEED (%) dflt=102.0 (100.00, 105.0)
This value of the rated speed when exceeded, and the USE LOAD REJECTION? Value is true, and the
LD REJ SPD CHG (RPM/SEC) is exceeded, will enable the load rejection logic.
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