GovGAST2
Class Description
Gas turbine.
Attributes
| Name | Type | Description |
|---|---|---|
| a | Float | Valve positioner (<i>A</i>). |
| af1 | PU | Exhaust temperature parameter (<i>Af1</i>). Unit = PU temperature. Based on temperature in degrees C. |
| af2 | PU | Coefficient equal to 0,5(1-speed) (<i>Af2</i>). |
| b | Float | Valve positioner (<i>B</i>). |
| bf1 | PU | (<i>Bf1</i>). <i>Bf1</i> = <i>E</i>(1 - <i>W</i>) where <i>E</i> (speed sensitivity coefficient) is 0,55 to 0,65 x <i>Tr</i>. Unit = PU temperature. Based on temperature in degrees C. |
| bf2 | PU | Turbine torque coefficient K<sub>hhv</sub> (depends on heating value of fuel stream in combustion chamber) (<i>Bf2</i>). |
| c | Float | Valve positioner (<i>C</i>). |
| cf2 | PU | Coefficient defining fuel flow where power output is 0% (<i>Cf2</i>). Synchronous but no output. Typically 0,23 x K<sub>hhv</sub> (23% fuel flow). |
| ecr | Seconds | Combustion reaction time delay (<i>Ecr</i>) (>= 0). |
| etd | Seconds | Turbine and exhaust delay (<i>Etd</i>) (>= 0). |
| k3 | PU | Ratio of fuel adjustment (<i>K3</i>). |
| k4 | PU | Gain of radiation shield (<i>K4</i>). |
| k5 | PU | Gain of radiation shield (<i>K5</i>). |
| k6 | PU | Minimum fuel flow (<i>K6</i>). |
| kf | PU | Fuel system feedback (<i>Kf</i>). |
| mwbase | ActivePower | Base for power values (<i>MWbase</i>) (> 0). Unit = MW. |
| t | Seconds | Fuel control time constant (<i>T</i>) (>= 0). |
| t3 | Seconds | Radiation shield time constant (<i>T3</i>) (>= 0). |
| t4 | Seconds | Thermocouple time constant (<i>T4</i>) (>= 0). |
| t5 | Seconds | Temperature control time constant (<i>T5</i>) (>= 0). |
| tc | Temperature | Temperature control (<i>Tc</i>). Unit = °F or °C depending on parameters <i>Af1</i> and <i>Bf1</i>. |
| tcd | Seconds | Compressor discharge time constant (<i>Tcd</i>) (>= 0). |
| tf | Seconds | Fuel system time constant (<i>Tf</i>) (>= 0). |
| tmax | PU | Maximum turbine limit (<i>Tmax</i>) (> GovGAST2.tmin). |
| tmin | PU | Minimum turbine limit (<i>Tmin</i>) (< GovGAST2.tmax). |
| tr | Temperature | Rated temperature (<i>Tr</i>). Unit = °C depending on parameters<i> Af1 </i>and <i>Bf1</i>. |
| trate | ActivePower | Turbine rating (<i>Trate</i>). Unit = MW. |
| tt | Seconds | Temperature controller integration rate (<i>Tt</i>) (>= 0). |
| w | PU | Governor gain (1/droop) on turbine rating (<i>W</i>). |
| x | Seconds | Governor lead time constant (<i>X</i>) (>= 0). |
| y | Seconds | Governor lag time constant (<i>Y</i>) (> 0). |
| z | Integer | Governor mode (<i>Z</i>). 1 = droop 0 = isochronous. |
Relationships
Ancestors
Descendents
No descendent classes
Associations
None