GovGAST1
Class Description
Modified single shaft gas turbine.
Attributes
| Name | Type | Description |
|---|---|---|
| a | Float | Turbine power time constant numerator scale factor (<i>a</i>). Typical value = 0,8. |
| b | Float | Turbine power time constant denominator scale factor (<i>b</i>) (>0). Typical value = 1. |
| db1 | Frequency | Intentional dead-band width (<i>db1</i>). Unit = Hz. Typical value = 0. |
| db2 | ActivePower | Unintentional dead-band (<i>db2</i>). Unit = MW. Typical value = 0. |
| eps | Frequency | Intentional db hysteresis (<i>eps</i>). Unit = Hz. Typical value = 0. |
| fidle | PU | Fuel flow at zero power output (<i>Fidle</i>). Typical value = 0,18. |
| gv1 | PU | Nonlinear gain point 1, PU gv (<i>Gv1</i>). Typical value = 0. |
| gv2 | PU | Nonlinear gain point 2,PU gv (<i>Gv2</i>). Typical value = 0. |
| gv3 | PU | Nonlinear gain point 3, PU gv (<i>Gv3</i>). Typical value = 0. |
| gv4 | PU | Nonlinear gain point 4, PU gv (<i>Gv4</i>). Typical value = 0. |
| gv5 | PU | Nonlinear gain point 5, PU gv (<i>Gv5</i>). Typical value = 0. |
| gv6 | PU | Nonlinear gain point 6, PU gv (<i>Gv6</i>). Typical value = 0. |
| ka | PU | Governor gain (<i>Ka</i>). Typical value = 0. |
| kt | PU | Temperature limiter gain (<i>Kt</i>). Typical value = 3. |
| lmax | PU | Ambient temperature load limit (<i>Lmax</i>). <i>Lmax</i> is the turbine power output corresponding to the limiting exhaust gas temperature. Typical value = 1. |
| loadinc | PU | Valve position change allowed at fast rate (<i>Loadinc</i>). Typical value = 0,05. |
| ltrate | Float | Maximum long term fuel valve opening rate (<i>Ltrate</i>). Typical value = 0,02. |
| mwbase | ActivePower | Base for power values (<i>MWbase</i>) (> 0). Unit = MW. |
| pgv1 | PU | Nonlinear gain point 1, PU power (<i>Pgv1</i>). Typical value = 0. |
| pgv2 | PU | Nonlinear gain point 2, PU power (<i>Pgv2</i>). Typical value = 0. |
| pgv3 | PU | Nonlinear gain point 3, PU power (<i>Pgv3</i>). Typical value = 0. |
| pgv4 | PU | Nonlinear gain point 4, PU power (<i>Pgv4</i>). Typical value = 0. |
| pgv5 | PU | Nonlinear gain point 5, PU power (<i>Pgv5</i>). Typical value = 0. |
| pgv6 | PU | Nonlinear gain point 6, PU power (<i>Pgv6</i>). Typical value = 0. |
| r | PU | Permanent droop (<i>R</i>) (>0). Typical value = 0,04. |
| rmax | Float | Maximum fuel valve opening rate (<i>Rmax</i>). Unit = PU / s. Typical value = 1. |
| t1 | Seconds | Governor mechanism time constant (<i>T1</i>) (>= 0). <i>T1</i> represents the natural valve positioning time constant of the governor for small disturbances, as seen when rate limiting is not in effect. Typical value = 0,5. |
| t2 | Seconds | Turbine power time constant (<i>T2</i>) (>= 0). <i>T2</i> represents delay due to internal energy storage of the gas turbine engine. <i>T2</i> can be used to give a rough approximation to the delay associated with acceleration of the compressor spool of a multi-shaft engine, or with the compressibility of gas in the plenum of the free power turbine of an aero-derivative unit, for example. Typical value = 0,5. |
| t3 | Seconds | Turbine exhaust temperature time constant (<i>T3</i>) (>= 0). <i>T3</i> represents delay in the exhaust temperature and load limiting system. Typical value = 3. |
| t4 | Seconds | Governor lead time constant (<i>T4</i>) (>= 0). Typical value = 0. |
| t5 | Seconds | Governor lag time constant (<i>T5</i>) (>= 0). If = 0, entire gain and lead-lag block is bypassed. Typical value = 0. |
| tltr | Seconds | Valve position averaging time constant (<i>Tltr</i>) (>= 0). Typical value = 10. |
| vmax | PU | Maximum turbine power, PU of MWbase (<i>Vmax</i>) (> GovGAST1.vmin). Typical value = 1. |
| vmin | PU | Minimum turbine power, PU of MWbase (<i>Vmin</i>) (< GovGAST1.vmax). Typical value = 0. |
Relationships
Ancestors
Descendents
No descendent classes
Associations
None