大型风力发电机组机械故障诊断信息系统研究

发布时间：2018-06-30 03:48

本文选题：风力发电机组 + 故障诊断　；参考：《燕山大学》2011年硕士论文

【摘要】：目前,风力发电机组的发展趋向于大型化,但技术的成熟度跟不上风力发电机的发展速度。风力发电机工况环境恶劣、信号采集与处理复杂,使得大型风电机组状态监测难度增加、系统故障增多、维护难度大,费用急升。当前大型风场维护费用将占到总成本的30%以上。课题以风力发电机机械故障为研究对象,基于信号检测与处理技术、网络和数据库开发技术,采用模块化的设计思想,开发了基于B/S结构的大型风力发电机组故障诊断信息系统。本文首先介绍了风力发电机的结构及常见故障,从总体上设计了故障诊断系统的体系结构,并给出了传感器的布点方案,研究了振动信号分析与故障诊断方法;然后设计该故障诊断信息系统的层次结构,并运用标准的UML建模语言,从静态和动态两方面,对系统进行结构建模;基于B/S模式和信息系统的功能结构,运用数据库开发技术,设计了软件系统的数据库结构;最后,基于ASP网络编程语言开发了故障诊断信息系统,详细地描述了各个模块的结构和功能,并基于22千瓦风力发电机实验模拟平台,以齿轮箱某轴承的在线监测、故障诊断为例,介绍了原型系统。该信息系统的研究与原型系统的开发,对提高机组故障诊断的信息集成度和机组运行水平具有较好的应用价值。
[Abstract]:At present, the development of wind turbine tends to be large-scale, but the technology maturity can not keep up with the speed of wind turbine development. The condition of wind turbine is very bad, and the signal collection and processing are complicated, which makes it more difficult to monitor the condition of large wind turbine, more system faults, more difficulty in maintenance and higher cost. Current large wind field maintenance costs will account for more than 30% of the total cost. Based on the signal detection and processing technology, the network and database development technology, the design idea of modularization is adopted. A large wind turbine fault diagnosis information system based on B / S structure is developed. In this paper, the structure and common faults of wind turbine are introduced, the system structure of fault diagnosis system is designed as a whole, the layout scheme of sensor is given, and the method of vibration signal analysis and fault diagnosis is studied. Then the hierarchical structure of the fault diagnosis information system is designed, and the static and dynamic aspects of the system are modeled by using the standard UML modeling language, and the database development technology is used based on the B / S model and the function structure of the information system. Finally, the fault diagnosis information system is developed based on ASP network programming language, and the structure and function of each module are described in detail. This paper introduces a prototype system for on-line monitoring and fault diagnosis of a bearing in a gearbox. The research of the information system and the development of the prototype system have a good application value to improve the information integration of the unit fault diagnosis and the operation level of the unit.
【学位授予单位】：燕山大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TM315;TH165.3

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