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Wind driven generator blade ice coating prediction method and system

A technology for wind turbines and forecasting methods, applied in wind turbines, wind energy power generation, engines, etc., can solve problems such as the inability to guarantee safe production

Active Publication Date: 2019-02-12
XUJI GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a wind turbine blade icing prediction method and system for solving the problem that the existing detection technology cannot guarantee safe production

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  • Wind driven generator blade ice coating prediction method and system
  • Wind driven generator blade ice coating prediction method and system
  • Wind driven generator blade ice coating prediction method and system

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specific Embodiment approach

[0051] A wind power generator blade icing prediction system in a wind power plant, the system includes a sensor, a processor, and a memory; the sensor includes a temperature sensor, a humidity sensor, and an air pressure sensor, and also includes a frost detection sensor. The processor executes program instructions stored in memory to perform the following steps:

[0052] 1) Sampling the environmental historical data of the wind power plant to form a sample set distributed in three-dimensional space; the temperature sensor, humidity sensor and air pressure sensor are all installed in the open environment above the wind turbine cabin; the frost monitoring sensor is installed at the root of the blade The impellers rotate synchronously, and the monitoring point of the frost monitoring sensor is positioned at the leading edge of the blade; each sensor communicates with the processor to collect environmental variables in real time, mainly collecting environmental information within ...

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Abstract

The invention relates to a wind driven generator blade ice coating prediction method and system. The system comprises a sensor, a processor and a storer; after wind power plant environment data is sampled through the sensor, the processor builds models of sample sets, and classifies the sample sets; a super plane is used as criticality of a no-ice environment and an ice environment to calculate distances from present environment variables to the super plane; and the ice coating tendency of generator blades is judged by combining the distances calculated in previous and later sampling periods with a preset threshold, so that the purpose of preventing the ice on fan blades is achieved, and the production safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of state monitoring of wind power plants, and in particular relates to a method and system for predicting icing of blades of wind power generators. Background technique [0002] At present, many wind power plants in China have low temperature and high air humidity in autumn and winter. The blades of wind turbines are easily covered with frost. Frost can change the roughness of the blade surface. When the ice is thicker, it can even change the blade airfoil. These two factors significantly change the lift coefficient and drag coefficient of the blades, because under normal circumstances, the fan works in the optimal working state, and the wind energy utilization efficiency is the highest. When the blades are frosted, the fan is out of the optimal working state, and the power generation is reduced. . On the other hand, the icing of the blades is usually uneven, which will cause the rotation of the wind rotor ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D80/40
CPCF03D80/40Y02E10/72Y02P70/50
Inventor 高亚春费怀盛徐奉友岳红轩卢晓光李春阳刘伟鹏李延青曹阳超刘新社
Owner XUJI GRP