AccelerationLimiter
Dm_select
Flag
LoadLimiter
LoadLimiterDU
Min_select
PIDGovernor
PIDGovernorDU
R_select
Turbine
Basic components for GGOV and GGOVDU turbine governor models
Extends from Modelica.Icons.BasesPackage (Icon for packages containing base classes).
| Name | Description |
|---|---|
| AccelerationLimiter
|
GE General GGOV1 and GGOV1DU Governor Acceleration Control |
| Dm_select
|
Representation of the variation of maximum power capability with shaft speed |
| Flag
|
Flag to determine if fluid flow depends on speed |
| LoadLimiter
|
GE General GGOV1 Governor/Turbine Temperature Control |
| LoadLimiterDU
|
GE General GGOV1DU Governor/Turbine Temperature Control |
| Min_select
|
Output the minimum element of the input vector |
| PIDGovernor
|
GE GGOV1 General Governor Frequency Controller |
| PIDGovernorDU
|
GE GGOV1DU General Governor Frequency Controller |
| R_select
|
Selects the feedback signal used in GGOV1 and GGOV1DU frequency control systems |
| Turbine
|
GE General GGOV1 and GGOV1DU Turbine Model |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.AccelerationLimiterGE General GGOV1 and GGOV1DU Governor Acceleration Control
The following documentation is adapted from [PSSE-Models], chapter 7.12:
This is an acceleration control system for the general purpose Turbine/Governor models GGOV1 and GGOV1DU.
| Name | Description |
|---|---|
| Ka | Acceleration limiter gain [1] |
| Ta | Acceleration limiter time constant [s] |
| DELT | Time step used in simulation [s] |
| Name | Description |
|---|---|
| SPEED | Machine speed deviation from nominal (pu) |
| ASET | Acceleration limiter setpoint (p.u./s) |
| FSRA | Acceleration Controller Output |
| FSR |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.Dm_selectRepresentation of the variation of maximum power capability with shaft speed
The following documentation is adapted from [PSSE-Models], chapter 7.12:
This variable is used to represent the variation of the maximum power capability or maximum engine power with shaft speed. If Dm is positive it describes a lower maximum power output as speed increases. This is characteristic of some engines and aeroderivative turbines. If Dm is negative the maximum fuel flow is considered to decrease as speed increases. This is common on single shaft gas turbines.
| Name | Description |
|---|---|
| Dm | Mechanical damping coefficient |
| Name | Description |
|---|---|
| y | |
| speed |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.FlagFlag to determine if fluid flow depends on speed
The following documentation is adapted from [PSSE-Models], chapter 7.12:
This flag is used to determine if the fluid flow depends on the speed of the machine. Gas turbines have fluid flow independent from speed and thus the flag should be set to 0. Diesel engines on the other hand have their fluid flow proportional on the speed. In this case, the flag should be set to 1.
| Name | Description |
|---|---|
| Flag | Switch for fuel source characteristic |
| Name | Description |
|---|---|
| y | |
| speed |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.LoadLimiterGE General GGOV1 Governor/Turbine Temperature Control
The following documentation is adapted from [PSSE-Models], chapter 7.12:
Load limiter and temperature control system for the general purpose Turbine/Governor model GGOV1.
| Name | Description |
|---|---|
| Kturb | Turbine gain [1] |
| Kpload | Load limiter proportional gain for PI controller [1] |
| Kiload | Load limiter integral gain for PI controller [1/s] |
| Dm | Mechanical damping coefficient [1] |
| Wfnl | No load fuel flow [1] |
| Name | Description |
|---|---|
| FSRT | Controller Output |
| LDREF | Load Limiter reference value (pu) |
| TEXM | Measured Exhaust Temperature |
| PELEC | Machine electrical power (pu) |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.LoadLimiterDUGE General GGOV1DU Governor/Turbine Temperature Control
The following documentation is adapted from [PSSE-Models], chapter 7.13:
Load limiter and temperature control system for the general purpose Turbine/Governor model GGOV1DU.
| Name | Description |
|---|---|
| Kturb | Turbine gain [1] |
| Kpload | Load limiter proportional gain for PI controller [1] |
| Kiload | Load limiter integral gain for PI controller [1/s] |
| Dm | Mechanical damping coefficient [1] |
| Wfnl | No load fuel flow [1] |
| Vmax | Maximum valve position limit [1] |
| Vmin | Minimum valve position limit [1] |
| Name | Description |
|---|---|
| FSRT | Controller Output |
| LDREF | Load Limiter reference value (pu) |
| TEXM | Measured Exhaust Temperature |
| PELEC | Machine electrical power (pu) |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.Min_selectOutput the minimum element of the input vector
The following documentation is adapted from [PSSE-Models], chapter 7.12:
Determines the minimum element of the input vector and provide its value as output.
| Name | Description |
|---|---|
| frs0 |
| Name | Description |
|---|---|
| u[nu] | |
| yMin |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.PIDGovernorGE GGOV1 General Governor Frequency Controller
The following documentation is adapted from [PSSE-Models], chapter 7.12:
Frequency control system for the general purpose Turbine/Governor models GGOV1. Note that four feedback variables can be chosen for the droop control. If the turbine is set to be isochronous, it is necessary to set the permanent droop to zero.
| Name | Description |
|---|---|
| Rselect | Feedback signal for governor droop |
| R | Permanent droop [1] |
| T_pelec | Electrical power transducer time constant [s] |
| maxerr | Maximum value for speed error signal [1] |
| minerr | Minimum value for speed error signal [1] |
| Kpgov | Governor proportional gain [1] |
| Kigov | Governor integral gain [1/s] |
| Kdgov | Governor derivative gain [s] |
| Tdgov | Governor derivative controller time constant [s] |
| Kturb | Turbine gain [1] |
| Kimw | Power controller (reset) gain [1/s] |
| db | Speed governor deadband [1] |
| Wfnl | No load fuel flow [1] |
| Dm | Mechanical damping coefficient [1] |
| Name | Description |
|---|---|
| PELEC | Machine electrical power (pu) |
| PMW_SET | Supervisory Load Controller Setpoint |
| P_REF | |
| SPEED | Machine speed deviation from nominal (pu) |
| VSTROKE | Valve Stroke |
| GOVOUT1 | Governor Output before Limiter |
| FSRN |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.PIDGovernorDUGE GGOV1DU General Governor Frequency Controller
The following documentation is adapted from [PSSE-Models], chapter 7.13:
Frequency control system for the general purpose Turbine/Governor models GGOV1DU. Note that four feedback variables can be chosen for the droop control. If the turbine is set to be isochronous, it is necessary to set the permanent droop to zero.
| Name | Description |
|---|---|
| Rselect | Feedback signal for governor droop |
| R | Permanent droop [1] |
| T_pelec | Electrical power transducer time constant [s] |
| maxerr | Maximum value for speed error signal [1] |
| minerr | Minimum value for speed error signal [1] |
| Kpgov | Governor proportional gain [1] |
| Kigov | Governor integral gain [1/s] |
| Kdgov | Governor derivative gain [s] |
| Tdgov | Governor derivative controller time constant [s] |
| Kturb | Turbine gain [1] |
| Wfnl | No load fuel flow [1] |
| Kimw | Power controller (reset) gain [1/s] |
| db | Speed governor deadband [1] |
| Dm | Mechanical damping coefficient [1] |
| Name | Description |
|---|---|
| PELEC | Machine electrical power (pu) |
| PMW_SET | Supervisory Load Controller Setpoint |
| P_REF | |
| SPEED | Machine speed deviation from nominal (pu) |
| VSTROKE | Valve Stroke |
| GOVOUT1 | Governor Output before Limiter |
| FSRN |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.R_selectSelects the feedback signal used in GGOV1 and GGOV1DU frequency control systems
The following documentation is adapted from [PSSE-Models], chapter 7.12:
This model allows the user to determine which feedback signal will be used in the droop control for GGOV1 and GGOV1DU models. Note that the permanent droop
rshould also be set to 0 if the isochronous mode is chosen (0 is selected).
| Name | Description |
|---|---|
| Rselect | Feedback signal for governor droop |
| Name | Description |
|---|---|
| y | |
| Pelect | |
| ValveStroke | |
| GovernorOutput |
OpenIPSL.Electrical.Controls.PSSE.TG.BaseClasses.GGOV1.TurbineGE General GGOV1 and GGOV1DU Turbine Model
The following documentation is adapted from [PSSE-Models], chapter 7.12:
Turbine dynamic system for the general purpose Turbine/Governor models GGOV1 and GGOV1DU.
If one wants to use this model in combination with linear analysis then the parameter delayType
needs to get changed to "Pade Delay".
The Pade Delay model herein has as default n=2 and m=n.
Linearisation will fail if padeDelay.delayTime = 0. The default time-delay is set to padeDelay.delayTime = C.eps.
| Name | Description |
|---|---|
| Flag | Switch for fuel source characteristic |
| delay | Delay type (for linearisation) |
| Tact | Actuator time constant [s] |
| Kturb | Turbine gain [1] |
| Tb | Turbine lag time constant [s] |
| Tc | Turbine lead time constant [s] |
| Teng | Transport lag time constant for diesel engine [s] |
| Tfload | Load Limiter time constant [s] |
| Dm | Mechanical damping coefficient [1] |
| Vmax | Maximum valve position limit [1] |
| Vmin | Minimum valve position limit [1] |
| Ropen | Maximum valve opening rate [1/s] |
| Rclose | Maximum valve closing rate [1/s] |
| Tsa | Temperature detection lead time constant [s] |
| Tsb | Temperature detection lag time constant [s] |
| DELT | Time step used in simulation [s] |
| Wfnl | No load fuel flow [1] |
| Name | Description |
|---|---|
| SPEED | Machine speed deviation from nominal (pu) |
| FSR | Governor Output |
| PMECH | Turbine mechanical power (pu) |
| TEXM | Measured Exhaust Temperature |
| VSTROKE | Valve Position |
| PELEC | Machine electrical power (pu) |