GovGASTWD
Class Description
Woodward™ gas turbine governor. [Footnote: Woodward gas turbines are an example of suitable products available commercially. This information is given for the convenience of users of this document and does not constitute an endorsement by IEC of these products.]
Attributes
| Name | Type | Description |
|---|---|---|
| a | Float | Valve positioner (<i>A</i>). |
| af1 | PU | Exhaust temperature parameter (<i>Af1</i>). |
| 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>. |
| 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>). |
| kd | PU | Drop governor gain (<i>Kd</i>). |
| kdroop | PU | (<i>Kdroop</i>) (>= 0). |
| kf | PU | Fuel system feedback (<i>Kf</i>). |
| ki | PU | Isochronous Governor Gain (<i>Ki</i>). |
| kp | PU | PID proportional gain (<i>Kp</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>). |
| tcd | Seconds | Compressor discharge time constant (<i>Tcd</i>) (>= 0). |
| td | Seconds | Power transducer time constant (<i>Td</i>) (>= 0). |
| tf | Seconds | Fuel system time constant (<i>Tf</i>) (>= 0). |
| tmax | PU | Maximum Turbine limit (<i>Tmax</i>) (> GovGASTWD.tmin). |
| tmin | PU | Minimum turbine limit (<i>Tmin</i>) (< GovGASTWD.tmax). |
| tr | Temperature | Rated temperature (<i>Tr</i>). |
| trate | ActivePower | Turbine rating (<i>Trate</i>). Unit = MW. |
| tt | Seconds | Temperature controller integration rate (<i>Tt</i>) (>= 0). |
Relationships
Ancestors
Descendents
No descendent classes
Associations
None