基于RCM的風電機組維修決策技術(shù)研究
[Abstract]:Wind power generation technology is a kind of clean energy power generation technology. Nowadays, the economy of our country continues to develop at a high speed, resources are gradually scarce, and environmental problems are becoming more and more serious under the background of rapid development. However, due to the poor operating environment of wind turbine, the low manufacturing level of domestic wind turbine in the early stage, and the immature operation and maintenance management technology of wind farm enterprises, the failure rate of wind power equipment is relatively high. At present, the methods of equipment maintenance and inspection in domestic wind farm are based on the maintenance manual provided by the equipment manufacturer, and do not take into account the actual operation of the wind farm, so there are some problems such as improper selection of maintenance strategy, excessive maintenance and lack of maintenance. At present, the main maintenance means of wind farm is ex post maintenance. For the important equipment, it is difficult to control the failure consequence and will cause serious damage to the equipment. Aiming at the above problems, this paper introduces the reliability centered maintenance (RCM) concept into the wind power field, takes the wind turbine as the research object, and develops the maintenance decision method based on RCM. The main work of this paper is as follows: (1) system analysis of wind turbine based on RCM: the implementation process of RCM method in wind farm is introduced. By analyzing the composition and function of the equipment in the wind turbine, dividing the wind turbine system, sorting out the equipment data of the wind turbine, running and maintaining instructions and historical fault data, the functional block diagram and the task reliability block diagram of each system are drawn. Complete failure mode and impact analysis. Fault tree analysis of key equipment and quantitative analysis are carried out. (2) Establishment of life analysis model for key equipment of wind turbine: discuss the problems to be considered in the establishment of life analysis model of wind turbine. The life model of key equipment is established by Weibull distribution model, and the model is judged by fitting. According to the model to calculate the failure rate, reliability, failure probability density, average failure time and other related reliability indicators. (3) maintenance decision and periodic maintenance cycle determination: through the decision process in RCM, The maintenance decision is made on the fault mode of the equipment in the wind turbine, and the failure mode of the equipment is determined by the Weibull distribution failure rate model, which belongs to the failure mode in RCM. By considering the consequences of failure and the maintenance cost of different maintenance modes, the maintenance method is determined. Finally, the periodic maintenance or replacement interval is determined for the failure with periodic maintenance.
【學位授予單位】:華北電力大學(北京)
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM315
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