Maintenance method and device based on wind generation set part significance evaluation

Abstract

The invention provides a maintenance method and device based on wind generation set part importance evaluation. The method comprises the following steps: dividing importance grades of parts and a factor set of evaluation, and calculating an interval number grey fuzzy matrix according to importance degree of each factor in the obtained factor set with respect to each grade in the importance grades, and sufficient degree of information included in the factor set; according to an interval analytic hierarchy process, calculating weight of each factor for wind generation set part significance evaluation, and determining a weight matrix of the factor set; and on the basis of an OWA operator, according to the interval number grey fuzzy matrix and the weight matrix of the factor set, determining importance degree of a part of a wind generation set, and determining a corresponding maintenance strategy according to the importance degree of the part of the wind generation set. The method and device fully consider the degree of membership of evaluation factors to the evaluation grades as well as influence of sufficient degree of the information on importance evaluation, thereby improving accuracy of wind generation set part importance evaluation.

Description

technical field [0001] The invention relates to the field of evaluation of electromechanical equipment, in particular to a method and device for evaluating the importance of wind turbine components. Background technique [0002] At present, due to the popularity of wind power generation, the use of wind turbines is increasing year by year, but in the process of use, due to the instability and randomness of wind energy, coupled with the coupling between wind turbine components and the harsh operating environment, making The operation, maintenance and management of wind turbines is becoming more and more important. [0003] The traditional operation, maintenance and management of wind turbines includes "regular maintenance" and "after-event maintenance" of wind turbines, but these two methods often have the phenomenon of "over-maintenance" and "lack of maintenance". [0004] In the prior art, the method of analyzing the importance of wind turbine components is usually used to...

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Problems solved by technology

[0003] The traditional operation, maintenance and management of wind turbines includes "regular maintenance" and "after-event maintenance" of wind turbines, but these two methods often have the phenomenon of "over-maintenance" and "lack of maintenance"

[0004] In the prior art, the method of analyzing the importance of wind turbine components is usually used to determine the importance of wind turbine components, and then formulate different strategies for wind turbines according to different importance, but the wind turbine components in the prior art When evaluating importance, the method of point value is adopted, which does not take into account the degree to which the evaluation factors belong to the evaluation level and the influence of the sufficient degree of information on the evaluation of importance

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