Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fault diagnosis method and system for speed change gearbox of wind turbine

A technology for variable speed gearboxes and wind turbines, which is used in machine gear/transmission mechanism testing, mechanical component testing, machine/structural component testing, etc. Intricate processes, etc.

Inactive Publication Date: 2018-06-26
CHINA ELECTRIC POWER RES INST +3
View PDF4 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The operation of the variable speed gearbox is closely related to the changes of various parameters, and the strong coupling between the parameters makes the industrial process intricate, which greatly increases the difficulty of accurate diagnosis of the variable speed gearbox of the wind turbine.
[0007] (3) The nonlinearity of the operation of the variable speed gearbox system of the wind turbine

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fault diagnosis method and system for speed change gearbox of wind turbine
  • Fault diagnosis method and system for speed change gearbox of wind turbine
  • Fault diagnosis method and system for speed change gearbox of wind turbine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0085] The flow of the diagnosis method in the present invention includes four stages: constructing the fault mode set of the variable speed gearbox, determining the fault symptom characteristic value library, establishing the multivariate fuzzy identification model of the variable speed gearbox fault, and obtaining the fault diagnosis result. The overall fault diagnosis of the variable speed gearbox of the wind turbine is simple The flow chart and detailed process are as follows figure 1 and 2 shown.

[0086] Based on the pre-established multivariate fuzzy identification model, determine the fault mode corresponding to the collected abnormal state of the transmission gearbox to be identified;

[0087] The pre-established multivariate fuzzy identification model includes: a wind turbine gear box fault mode set, a fault symptom characteristic value library and a standard multivariate fuzzy symptom set.

[0088] The multivariate fuzzy identification model of establishing in adv...

Embodiment 2

[0135] Based on the same inventive concept, the present invention also provides a fault diagnosis system for a variable speed gearbox of a wind turbine, including:

[0136] The determining module is used to determine the fault mode corresponding to the collected abnormal state of the transmission gearbox to be identified based on the pre-established multivariate fuzzy identification model;

[0137] The pre-established multivariate fuzzy identification model includes: a wind turbine gear box fault mode set, a fault symptom characteristic value library and a standard multivariate fuzzy symptom set.

[0138] Further: also include building block, be used for establishing in advance, multivariate fuzzy identification model, described building block includes:

[0139] The first establishment unit is used to construct the fault mode set of the wind turbine transmission gearbox based on the structure and vibration mechanism of the wind turbine transmission gearbox;

[0140] The acqui...

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

No PUM Login to View More

Abstract

The invention relates to a fault diagnosis method and system for a speed change gearbox of a wind turbine. The method includes determining a fault mode corresponding to an abnormal state of a speed change gearbox to be identified that is acquired based on a pre-established multivariate fuzzy recognition model; wherein the pre-established multivariate fuzzy recognition model includes a wind turbinespeed change gearbox failure mode set, a fault symptom feature value library and a standard multivariate fuzzy symptom set. According to the fault diagnosis method and system, a vibration mechanism of each component of a speed change gearbox system is fully considered, multiple monitoring parameters are fused, and the multivariate fuzzy recognition model is established to achieve accurate diagnosis of the wind turbine speed change gearbox.

Description

technical field [0001] The invention relates to the field of new energy power generation, in particular to a fault diagnosis method and system for a transmission gearbox of a wind turbine. Background technique [0002] With the continuous expansion of the capacity of wind turbines, as a large-scale mechanical transmission system in wind turbines, the variable speed gearbox has many problems in the monitoring, control, operation and maintenance of its complex production process: [0003] (1) The interference of multiple mechanisms of the wind turbine transmission gearbox. [0004] There are various interferences with complex mechanisms during the operation of the variable speed gearbox of wind turbines, which affect the economic operation of the entire unit and even the station level. Traditional diagnostic methods usually ignore these unpredictable and uneliminable influencing factors. In practical applications The effect is far from the expected ideal effect. [0005] (2)...

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
no application Login to View More
IPC IPC(8): G01M13/02
CPCG01M13/021G01M13/028
Inventor 徐婷马晓晶王文卓毕然薛扬王瑞明付德义边伟
Owner CHINA ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com