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Blade ice-coating failure on-line monitoring method and system based on wind generation set operation state

A technology for wind turbines and icing, which is applied in wind power generation, wind turbines, motors, etc., and can solve the problems of few data reports and few technologies.

Active Publication Date: 2018-07-31
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, there are still relatively few technologies directly used for wind turbine blade icing monitoring, and there are still few data reports on wind turbine blade icing monitoring methods and technologies that can be maturely used in engineering practice.

Method used

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  • Blade ice-coating failure on-line monitoring method and system based on wind generation set operation state
  • Blade ice-coating failure on-line monitoring method and system based on wind generation set operation state
  • Blade ice-coating failure on-line monitoring method and system based on wind generation set operation state

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Experimental program
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Embodiment Construction

[0101] The present invention will be further described below with reference to the drawings and embodiments.

[0102] Such as image 3 with Figure 4 As shown, an online monitoring method for blade icing fault based on the operating state of a wind turbine includes the following steps:

[0103] Step 1: Collect historical wind turbine data;

[0104] The wind turbine data includes sensor data and icing data;

[0105] Wherein, the sensor data includes temperature, relative air humidity, wind speed, wind direction, nacelle direction, blade pitch angle, generator electrical power, and the icing data includes the icing degree of each area of ​​the blade corresponding to the sensor data and the entire blade coating Ice level

[0106] Each area of ​​the blade includes the tip area, the middle area of ​​the blade, and the root area of ​​the blade. The degree of icing is in the order of no icing [0.0~0.2], slight icing (0.2~0.4), general icing (0.4~0.6], relatively Severe icing (0.6~0.8], seve...

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Abstract

The invention discloses a blade ice-coating failure on-line monitoring method and system based on a wind generation set operation state. According to the method, operation state data acquired by a wind generation set operation set SCADA system is utilized, and ice-coating state characteristic indexes are extracted after proper processing of the data; a built blade ice-coating diagnosis nerve network is input; and characteristic indexes which represent both the ice-coating degree of blades and the ice-coating position of the blades are output. The method is a damage-free, dynamic and real-timemonitoring diagnosis method, and a theoretical basis and technical support can also be provided for diagnosis of blade ice-coating failure in engineering practice; the whole monitoring system is simple and convenient in operation; and the method and system have large promotion value.

Description

Technical field [0001] The invention belongs to the field of wind power generation equipment, and in particular relates to a method and system for on-line monitoring of blade icing faults based on the operating state of a wind turbine. Background technique [0002] my country has a vast territory and complex weather conditions. On land and sea in the northern region, and high-altitude mountainous areas in the southern region, wind, snow and frost in winter have brought great harm to the operation of wind turbines. Wind turbines operating in damp and cold winter areas often experience severe icing in winter. After the blades of wind turbines in operation are coated with ice, the dynamic and aerodynamic characteristics of the blades will be destroyed. When the quality and rigidity of the ice are integrated into the material characteristics of the blades, the blades will be overloaded and unevenly loaded, making the characteristics inconsistent with the original design. As a result...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/40
CPCF03D80/40Y02E10/72
Inventor 李录平龚妙刘瑞邹新元
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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