JPS5510036A - Rotor stress prediction turbine control system - Google Patents
Rotor stress prediction turbine control systemInfo
- Publication number
- JPS5510036A JPS5510036A JP8204578A JP8204578A JPS5510036A JP S5510036 A JPS5510036 A JP S5510036A JP 8204578 A JP8204578 A JP 8204578A JP 8204578 A JP8204578 A JP 8204578A JP S5510036 A JPS5510036 A JP S5510036A
- Authority
- JP
- Japan
- Prior art keywords
- load
- rotor
- temperature
- rate
- speed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Turbines (AREA)
Abstract
PURPOSE: To enable the quick starting of a turbine rotor and its follow-up to a load, by using the speed-up rate as a control parameter for the starting of the rotor and the load variation rate as a control parameter for the on-load run of the rotor, predicting the thermal stress of the rotor in consideration of the degree of vacuum of a steam condenser and comparing the predicted stress with a limit value to determine an optimal level.
CONSTITUTION: A digital computer is provided in a thermal stress prediction turbine control system 100. The temperature T1' of a fluid as a function of a compensated value L' of the load L under a rated condition, the fluid temperature difference Δt0 between the upstream and downstream sides of a regulating valve 11, the passage area reduction ratio K1 of the valve 11 and a temperature reduction coefficient K2 are determined from the load L and the temperature TMS and pressure PMS of main steam by the control system 100 to estimate the steam condition after a first stage. The speed-up rate N' of a turbine, its speed N, the pressure PCON of the steam condenser 5 and no-load running fluid pressure P10 as a function of the temperature TMS are determined. Fluid pressure PH1 and temperature TH1 are determined as functions of said values N', N, PCON, P10. When the predicted stress is lower than the limit value, a load application permission 15 is given to a synchronous application means 14 and an optimal speed-up rate 4 is applied as a setpoint to a governor 10 and an optimal load variation rate 6 is applied as a setpoint to an ALR 7. The quick starting of the rotor and its follow- up to the load can thus be effected within an allowable stress range.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8204578A JPS5510036A (en) | 1978-07-07 | 1978-07-07 | Rotor stress prediction turbine control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8204578A JPS5510036A (en) | 1978-07-07 | 1978-07-07 | Rotor stress prediction turbine control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5510036A true JPS5510036A (en) | 1980-01-24 |
Family
ID=13763535
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8204578A Pending JPS5510036A (en) | 1978-07-07 | 1978-07-07 | Rotor stress prediction turbine control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5510036A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57310A (en) * | 1980-04-30 | 1982-01-05 | Gen Electric | Heat stress controlling load speed control method and apparatus for steam turbine |
| JPS6290573A (en) * | 1984-12-21 | 1987-04-25 | Matsushita Electric Ind Co Ltd | Method for displaying voltage drop |
-
1978
- 1978-07-07 JP JP8204578A patent/JPS5510036A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57310A (en) * | 1980-04-30 | 1982-01-05 | Gen Electric | Heat stress controlling load speed control method and apparatus for steam turbine |
| JPS6342086B2 (en) * | 1980-04-30 | 1988-08-22 | Gen Electric | |
| JPS6290573A (en) * | 1984-12-21 | 1987-04-25 | Matsushita Electric Ind Co Ltd | Method for displaying voltage drop |
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