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A real-time state evaluation method for a wind turbine generator

A technology for wind turbine and state assessment, which is applied to instruments, data processing applications, resources, etc., can solve the problems of ignoring randomness and only consider the uncertainty and ambiguity of the evaluation process, and avoid the deterioration of index weight accuracy. Effect

Inactive Publication Date: 2019-05-10
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

This only takes into account the ambiguity in the uncertainty of the judging process, ignoring the randomness

Method used

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  • A real-time state evaluation method for a wind turbine generator
  • A real-time state evaluation method for a wind turbine generator
  • A real-time state evaluation method for a wind turbine generator

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Embodiment 1

[0044] A real-time state assessment method for wind turbines, comprising the following steps:

[0045] Step 1: Build a wind turbine status evaluation index system: the index system includes more than one unit performance index and more than one external factor index; monitor each index in real time and obtain corresponding monitoring data;

[0046] Step 2: Establish the cloud mapping relationship between the relative deterioration degree of the index and the status level:

[0047] Step 2-1: Divide the status level, the number is 3-5;

[0048] Step 2-2: According to the determined state level, the relative deterioration degree of each index is divided into intervals;

[0049] Step 2-3: determine the normal cloud model function of each state level;

[0050] The normal cloud model can transform numbers and concepts to reflect the nature of parameters. The normal cloud model has three numerical characteristics: expectation (Ex), entropy (En) and hyperentropy (He), and their pra...

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Abstract

The invention discloses a real-time state evaluation method for a wind turbine generator. The method comprises the steps of constructing a wind turbine generator state evaluation index system, establishing a cloud mapping relation between the index relative degradation degree and the state grade, determining the weight of each index in the index system, determining the membership degree of the evaluation index to each state grade, and evaluating the state. According to the method, various influence factors of the wind turbine generator and influence degrees of the factors are comprehensively considered; the method avoids the index weight precision deterioration caused by a single weight determination method, combines the advantages of an entropy weight method, an analytic hierarchy process, a grey correlation degree method and other weight calculation methods by adopting a cooperative game theory, and can reflect the real operation state of the wind turbine generator.

Description

technical field [0001] The invention relates to a state assessment method of a wind turbine, in particular to a real-time state assessment method of a wind turbine, and belongs to the technical field of wind power. Background technique [0002] The lack of energy has led to the rapid rise of wind power generation, and at the same time, the installed capacity of wind power has continued to expand. According to the data recently released by the Global Wind Energy Council (GWEC), in 2017, the world newly installed wind power capacity was 52.57 GW, and by the end of 2017, the global cumulative installed capacity was 539.581 GW. The new installed capacity of wind power in my country is 19.66 million kilowatts, and the cumulative installed capacity has reached 188 million kilowatts. Among them, the newly installed capacity in the "Three North" region accounted for 45%, and the newly installed capacity in the southeastern region accounted for 55%. At the same time, both offshore ...

Claims

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Application Information

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IPC IPC(8): G06Q10/06G06Q50/06
Inventor 李俊卿马阳硕
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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