final case class GovCT1(TurbineGovernorDynamics: TurbineGovernorDynamics = null, aset: Double = 0.0, db: Double = 0.0, dm: Double = 0.0, ka: Double = 0.0, kdgov: Double = 0.0, kigov: Double = 0.0, kiload: Double = 0.0, kimw: Double = 0.0, kpgov: Double = 0.0, kpload: Double = 0.0, kturb: Double = 0.0, ldref: Double = 0.0, maxerr: Double = 0.0, minerr: Double = 0.0, mwbase: Double = 0.0, r: Double = 0.0, rclose: Double = 0.0, rdown: Double = 0.0, ropen: Double = 0.0, rselect: String = null, rup: Double = 0.0, ta: Double = 0.0, tact: Double = 0.0, tb: Double = 0.0, tc: Double = 0.0, tdgov: Double = 0.0, teng: Double = 0.0, tfload: Double = 0.0, tpelec: Double = 0.0, tsa: Double = 0.0, tsb: Double = 0.0, vmax: Double = 0.0, vmin: Double = 0.0, wfnl: Double = 0.0, wfspd: Boolean = false) extends Element with Product with Serializable
General model for any prime mover with a PID governor, used primarily for combustion turbine and combined cycle units.
This model can be used to represent a variety of prime movers controlled by PID governors. It is suitable, for example, for the representation of:
- gas turbine and single shaft combined cycle turbines
- diesel engines with modern electronic or digital governors
- steam turbines where steam is supplied from a large boiler drum or a large header whose pressure is substantially constant over the period under study
- simple hydro turbines in dam configurations where the water column length is short and water inertia effects are minimal.
Additional information on this model is available in the 2012 IEEE report, Dynamic Models for Turbine-Governors in Power System Studies, 3.1.2.3 pages 3-4 (GGOV1).
- TurbineGovernorDynamics
TurbineGovernorDynamics Reference to the superclass object.
- aset
Acceleration limiter setpoint (Aset). Unit = PU / s. Typical value = 0,01.
- db
Speed governor deadband in PU speed (db). In the majority of applications, it is recommended that this value be set to zero. Typical value = 0.
- dm
Speed sensitivity coefficient (Dm). Dm can represent either the variation of the engine power with the shaft speed or the variation of maximum power capability with shaft speed. If it is positive it describes the falling slope of the engine speed verses power characteristic as speed increases. A slightly falling characteristic is typical for reciprocating engines and some aero-derivative turbines. If it is negative the engine power is assumed to be unaffected by the shaft speed, but the maximum permissible fuel flow is taken to fall with falling shaft speed. This is characteristic of single-shaft industrial turbines due to exhaust temperature limits. Typical value = 0.
- ka
Acceleration limiter gain (Ka). Typical value = 10.
- kdgov
Governor derivative gain (Kdgov). Typical value = 0.
- kigov
Governor integral gain (Kigov). Typical value = 2.
- kiload
Load limiter integral gain for PI controller (Kiload). Typical value = 0,67.
- kimw
Power controller (reset) gain (Kimw). The default value of 0,01 corresponds to a reset time of 100 s. A value of 0,001 corresponds to a relatively slow-acting load controller. Typical value = 0,01.
- kpgov
Governor proportional gain (Kpgov). Typical value = 10.
- kpload
Load limiter proportional gain for PI controller (Kpload). Typical value = 2.
- kturb
Turbine gain (Kturb) (> 0). Typical value = 1,5.
- ldref
Load limiter reference value (Ldref). Typical value = 1.
- maxerr
Maximum value for speed error signal (maxerr) (> GovCT1.minerr). Typical value = 0,05.
- minerr
Minimum value for speed error signal (minerr) (< GovCT1.maxerr). Typical value = -0,05.
- mwbase
Base for power values (MWbase) (> 0). Unit = MW.
- r
Permanent droop (R). Typical value = 0,04.
- rclose
Minimum valve closing rate (Rclose). Unit = PU / s. Typical value = -0,1.
- rdown
Maximum rate of load limit decrease (Rdown). Typical value = -99.
- ropen
Maximum valve opening rate (Ropen). Unit = PU / s. Typical value = 0.10.
- rselect
Feedback signal for droop (Rselect). Typical value = electricalPower.
- rup
Maximum rate of load limit increase (Rup). Typical value = 99.
- ta
Acceleration limiter time constant (Ta) (> 0). Typical value = 0,1.
- tact
Actuator time constant (Tact) (>= 0). Typical value = 0,5.
- tb
Turbine lag time constant (Tb) (> 0). Typical value = 0,5.
- tc
Turbine lead time constant (Tc) (>= 0). Typical value = 0.
- tdgov
Governor derivative controller time constant (Tdgov) (>= 0). Typical value = 1.
- teng
Transport time delay for diesel engine used in representing diesel engines where there is a small but measurable transport delay between a change in fuel flow setting and the development of torque (Teng) (>= 0). Teng should be zero in all but special cases where this transport delay is of particular concern. Typical value = 0.
- tfload
Load-limiter time constant (Tfload) (> 0). Typical value = 3.
- tpelec
Electrical power transducer time constant (Tpelec) (> 0). Typical value = 1.
- tsa
Temperature detection lead time constant (Tsa) (>= 0). Typical value = 4.
- tsb
Temperature detection lag time constant (Tsb) (>= 0). Typical value = 5.
- vmax
Maximum valve position limit (Vmax) (> GovCT1.vmin). Typical value = 1.
- vmin
Minimum valve position limit (Vmin) (< GovCT1.vmax). Typical value = 0,15.
- wfnl
No load fuel flow (Wfnl). Typical value = 0,2.
- wfspd
Switch for fuel source characteristic to recognize that fuel flow, for a given fuel valve stroke, can be proportional to engine speed (Wfspd). true = fuel flow proportional to speed (for some gas turbines and diesel engines with positive displacement fuel injectors) false = fuel control system keeps fuel flow independent of engine speed. Typical value = true.
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GovCT1(TurbineGovernorDynamics: TurbineGovernorDynamics = null, aset: Double = 0.0, db: Double = 0.0, dm: Double = 0.0, ka: Double = 0.0, kdgov: Double = 0.0, kigov: Double = 0.0, kiload: Double = 0.0, kimw: Double = 0.0, kpgov: Double = 0.0, kpload: Double = 0.0, kturb: Double = 0.0, ldref: Double = 0.0, maxerr: Double = 0.0, minerr: Double = 0.0, mwbase: Double = 0.0, r: Double = 0.0, rclose: Double = 0.0, rdown: Double = 0.0, ropen: Double = 0.0, rselect: String = null, rup: Double = 0.0, ta: Double = 0.0, tact: Double = 0.0, tb: Double = 0.0, tc: Double = 0.0, tdgov: Double = 0.0, teng: Double = 0.0, tfload: Double = 0.0, tpelec: Double = 0.0, tsa: Double = 0.0, tsb: Double = 0.0, vmax: Double = 0.0, vmin: Double = 0.0, wfnl: Double = 0.0, wfspd: Boolean = false)
- TurbineGovernorDynamics
TurbineGovernorDynamics Reference to the superclass object.
- aset
Acceleration limiter setpoint (Aset). Unit = PU / s. Typical value = 0,01.
- db
Speed governor deadband in PU speed (db). In the majority of applications, it is recommended that this value be set to zero. Typical value = 0.
- dm
Speed sensitivity coefficient (Dm). Dm can represent either the variation of the engine power with the shaft speed or the variation of maximum power capability with shaft speed. If it is positive it describes the falling slope of the engine speed verses power characteristic as speed increases. A slightly falling characteristic is typical for reciprocating engines and some aero-derivative turbines. If it is negative the engine power is assumed to be unaffected by the shaft speed, but the maximum permissible fuel flow is taken to fall with falling shaft speed. This is characteristic of single-shaft industrial turbines due to exhaust temperature limits. Typical value = 0.
- ka
Acceleration limiter gain (Ka). Typical value = 10.
- kdgov
Governor derivative gain (Kdgov). Typical value = 0.
- kigov
Governor integral gain (Kigov). Typical value = 2.
- kiload
Load limiter integral gain for PI controller (Kiload). Typical value = 0,67.
- kimw
Power controller (reset) gain (Kimw). The default value of 0,01 corresponds to a reset time of 100 s. A value of 0,001 corresponds to a relatively slow-acting load controller. Typical value = 0,01.
- kpgov
Governor proportional gain (Kpgov). Typical value = 10.
- kpload
Load limiter proportional gain for PI controller (Kpload). Typical value = 2.
- kturb
Turbine gain (Kturb) (> 0). Typical value = 1,5.
- ldref
Load limiter reference value (Ldref). Typical value = 1.
- maxerr
Maximum value for speed error signal (maxerr) (> GovCT1.minerr). Typical value = 0,05.
- minerr
Minimum value for speed error signal (minerr) (< GovCT1.maxerr). Typical value = -0,05.
- mwbase
Base for power values (MWbase) (> 0). Unit = MW.
- r
Permanent droop (R). Typical value = 0,04.
- rclose
Minimum valve closing rate (Rclose). Unit = PU / s. Typical value = -0,1.
- rdown
Maximum rate of load limit decrease (Rdown). Typical value = -99.
- ropen
Maximum valve opening rate (Ropen). Unit = PU / s. Typical value = 0.10.
- rselect
Feedback signal for droop (Rselect). Typical value = electricalPower.
- rup
Maximum rate of load limit increase (Rup). Typical value = 99.
- ta
Acceleration limiter time constant (Ta) (> 0). Typical value = 0,1.
- tact
Actuator time constant (Tact) (>= 0). Typical value = 0,5.
- tb
Turbine lag time constant (Tb) (> 0). Typical value = 0,5.
- tc
Turbine lead time constant (Tc) (>= 0). Typical value = 0.
- tdgov
Governor derivative controller time constant (Tdgov) (>= 0). Typical value = 1.
- teng
Transport time delay for diesel engine used in representing diesel engines where there is a small but measurable transport delay between a change in fuel flow setting and the development of torque (Teng) (>= 0). Teng should be zero in all but special cases where this transport delay is of particular concern. Typical value = 0.
- tfload
Load-limiter time constant (Tfload) (> 0). Typical value = 3.
- tpelec
Electrical power transducer time constant (Tpelec) (> 0). Typical value = 1.
- tsa
Temperature detection lead time constant (Tsa) (>= 0). Typical value = 4.
- tsb
Temperature detection lag time constant (Tsb) (>= 0). Typical value = 5.
- vmax
Maximum valve position limit (Vmax) (> GovCT1.vmin). Typical value = 1.
- vmin
Minimum valve position limit (Vmin) (< GovCT1.vmax). Typical value = 0,15.
- wfnl
No load fuel flow (Wfnl). Typical value = 0,2.
- wfspd
Switch for fuel source characteristic to recognize that fuel flow, for a given fuel valve stroke, can be proportional to engine speed (Wfspd). true = fuel flow proportional to speed (for some gas turbines and diesel engines with positive displacement fuel injectors) false = fuel control system keeps fuel flow independent of engine speed. Typical value = true.
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- val TurbineGovernorDynamics: TurbineGovernorDynamics
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- GovCT1 → Row
- val db: Double
- val dm: Double
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- val ka: Double
- val kdgov: Double
- val kigov: Double
- val kiload: Double
- val kimw: Double
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- val kturb: Double
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