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Energy efficiency state diagnosis method of wind turbines based on energy flow

A technology for wind turbines and diagnosis methods, which is applied to wind turbines, engines, mechanical equipment, etc., can solve the problems of complex industrial processes and increase the difficulty of diagnosis and control of energy efficiency levels of turbines, and achieves strong correlation and coupling and achieves precision. Diagnosis, the effect of improving accuracy

Active Publication Date: 2018-05-25
CHINA ELECTRIC POWER RES INST +2
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Problems solved by technology

The energy efficiency level of the unit is closely related to the changes of various parameters, and the strong coupling between the parameters makes the industrial process intricate and greatly increases the difficulty of diagnosing and controlling the energy efficiency level of the unit
[0007] (3) Non-linearity of unit operation

Method used

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  • Energy efficiency state diagnosis method of wind turbines based on energy flow
  • Energy efficiency state diagnosis method of wind turbines based on energy flow
  • Energy efficiency state diagnosis method of wind turbines based on energy flow

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Embodiment Construction

[0064] Below in conjunction with accompanying drawing, the present invention is described in further detail:

[0065] The invention provides a method for diagnosing the energy efficiency state of a wind turbine based on energy flow. From the perspective of energy flow, the SCADA system operating data of the wind turbine is used, combined with the structural characteristics and operating characteristics of the wind turbine, to establish an energy efficiency index and associated parameter library, and realize the operation. Diagnosis of energy efficiency status of wind turbines in .

[0066] A method for diagnosing the energy efficiency state of wind turbines based on energy flow provided by the present invention comprises the following steps:

[0067] Step 1: Construct the wind turbine energy efficiency index related parameter library;

[0068] Step 2: Determine the reference interval of indicator parameters based on probability distribution statistics;

[0069] Step 3: Estab...

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Abstract

The invention provides an energy efficiency state diagnosis method of wind turbines based on an energy flow. The diagnosis method includes the steps that a relevant parameter library of a energy efficiency index of the wind turbines is constructed; a index parameter reference interval based on probability distribution statistics is confirmed; a wind power energy efficiency diagnosis tree is established; a level of energy efficiency state based on multivariate fuzzy recognition model is determined; a diagnostic result of energy efficiency state is obtained; and a real time diagnosis of the windturbine energy efficiency status is realized. The problem of incomplete and inaccurate state evaluation information of traditional wind turbines is solved. The accuracy of real-time identification ofthe wind turbine energy efficiency operation state is improved through an operation condition identification method.

Description

technical field [0001] The invention relates to energy efficiency state diagnosis, in particular to a method for diagnosing the energy efficiency state of a wind turbine based on energy flow. Background technique [0002] With the continuous expansion of wind turbine capacity, the requirements for unit economy and safety continue to increase, and there are many problems in the monitoring and control of its complex production process: [0003] (1) The interference of multiple mechanisms. [0004] During the operation of wind turbines, there are various interferences with complex mechanisms, which affect the economic operation of the units, especially in the transmission chain gearbox. There are various mechanism effects. Traditional diagnostic models usually ignore these unpredictable and irreversible influences. Factors, the effect in practical application is far from the expected ideal effect. [0005] (2) Strong coupling between parameters. [0006] The normal operation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00
CPCF05B2260/80
Inventor 徐婷马晓晶王文卓薛扬王瑞明边伟付德义李松迪
Owner CHINA ELECTRIC POWER RES INST
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