Method for predicting turbine generator insulating thermal aging life
A turbine generator and life prediction technology, which is applied in the direction of engine testing, machine/structural component testing, electrical measurement, etc., can solve problems such as lack of methods and systems
Active Publication Date: 2010-05-19
SHANGHAI POWER EQUIP RES INST
View PDF0 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, in order to monitor the running state of the stator winding of the generator, a stator winding temperature measuring element is installed. For different types of turbogenerators, most of the thermal resistance temperature measuring elements are buried between the upper and lower windings of the stator slot on the turbine side of the generator. 1. Monitor the working temperature of the stator winding insulation. Since the cumulative life loss of the thermal aging of the stator winding insulation of the generator is related to the working temperature and the cumulative working time of the insulation, there is no suitable method for online prediction of the thermal aging remaining life of the stator winding insulation of different slots. and the system is available
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0068] There are 42 slots in the stator winding of a certain type of 600MW turbo-generator. figure 1 The shown steam turbine generator stator winding insulation thermal aging life online prediction system adopts figure 2 The flow chart of the online prediction method for the thermal aging life of the stator winding insulation of the turbo generator shown and image 3 The computer software for the online prediction of the thermal aging life of the stator winding insulation of the steam turbine generator shown is running on the calculation / application server of the power plant control center. For the 42 stator slot windings of this type of turbo-generator, during the grid-connected operation of the unit, the database saves stator winding temperature data every 30 minutes. Above 41℃ (41℃ to 90℃) every 5℃ is regarded as a temperature section. Below 40℃ is regarded as a temperature section, and the actual temperature monitored above 91℃ is stored in the database. The thermal aging...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more PUM
Login to view more Abstract
The invention relates to a method for predicting the thermal aging life of a stator winding insulation of a steam turbogenerator, which is characterized in that, a computer software for predicating the thermal aging life of a stator winding insulation of a steam turbogenerator programmed by language C is installed on a calculation / application server; based on the time interval set by the software,statistics data on frequencies at different temperatures of the stator winding insulation of the steam turbogenerator are read from a database server, the accumulated operation times of the stator winding insulation of the steam turbogenerator at different temperatures are calculated, the accumulated thermal aging life loss of the stator winding insulation of the steam turbogenerator is calculated, the residual thermal aging life of the stator winding insulation of a steam turbogenerator is calculated; the results are calculated and analyzed, sent to the database server to store and for a website server to call up. The invention allows quantitative predication of the residual thermal aging life of the stator winding insulation of a steam turbogenerator at the use phase of the steam turbogenerator, and makes the thermal aging life of the stator winding insulation of the steam turbogenerator controllable.
Description
Technical field [0001] The invention relates to a method and system for predicting the thermal aging life of steam turbine generator insulation, in particular to an on-line prediction method and system of thermal aging cumulative life loss and remaining thermal aging life of steam turbine generator insulation, which is applied to steam turbine power generation Engine life management belongs to the technical field of steam turbine generators. Background technique [0002] Insulation thermal aging is one of the reasons for the damage of turbine generator windings. Both stator windings and rotor windings of turbine generators have insulation thermal aging problems. Considering that the working voltage of the turbine generator stator windings is higher than the rotor windings, the stator windings are insulated The thermal aging problem is more serious. The online prediction of the thermal aging life of the steam turbine generator insulation uses the turbine generator stator winding a...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more Application Information
Patent Timeline
Login to view more Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R31/06G01M15/00G06Q10/00G01K7/18
Inventor 史进渊杨宇邓志成危奇钟小萍
Owner SHANGHAI POWER EQUIP RES INST
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Try Eureka
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap