A method and system for online monitoring of blade icing faults based on the operating status of wind turbines

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

Active Publication Date: 2019-07-09
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A method and system for online monitoring of blade icing faults based on the operating status of wind turbines
  • A method and system for online monitoring of blade icing faults based on the operating status of wind turbines
  • A method and system for online monitoring of blade icing faults based on the operating status of wind turbines

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Embodiment Construction

[0101] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0102] Such as image 3 and Figure 4 As shown, an online monitoring method for blade icing faults based on the operating status of wind turbines 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, air relative humidity, wind speed, wind direction, nacelle direction, blade pitch angle, generator electric power, and the ice coating data includes the ice coating 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. Severe icing (0.6~0.8], severe icing (0.8~1], the icing degree of the entire blade is the average value of th...

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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 an online monitoring method and system for blade icing faults based on the operating state of a wind turbine. Background technique [0002] my country has a vast territory and complex meteorological conditions. In the land and sea in the northern region, and the high-altitude mountainous areas in the southern region, the wind, snow and frost in winter have brought great harm to the operation of wind turbines. Wind turbines operating in wet and cold areas often suffer from severe icing in winter. When the blades of wind turbines in operation are covered with ice, the dynamic and aerodynamic characteristics of the blades will be destroyed. When the quality and stiffness of ice are integrated into the material properties of the blades, the blades will be overloaded and the load will be uneven, making their characteristics inconsistent with the original desi...

Claims

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Application Information

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Patent Type & Authority Patents(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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