Virtual sensor systems and methods for estimation of steam turbine sectional efficiencies
US9194758B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 20, 2011 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Mar 11, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02C1/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Systems and methods of estimating an efficiency of a section of a steam turbine are disclosed. The systems and methods include determining a set of measurement data obtained directly from a set of sensors on the steam turbine, determining a set of derived data relating to measurements that cannot be obtained directly from the set of sensors, and estimating the efficiency of the section using the set of measurement data and the set of derived data. The systems and methods disclosed use physics-based models combined with nonlinear filtering techniques to estimate steam turbines' efficiencies when physical sensors are not available. These models capture the behavior of different components of the power plant, including all steam turbine sections, admission and crossover pipes, flow junctions, admission and control valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.