风力发电机故障诊断技术与工程实践研究

发布时间：2018-04-27 12:30

本文选题：风力发电机组 + 故障诊断　；参考：《华北电力大学》2017年硕士论文

【摘要】：随着风电机组装机越来越多,风电机组大部件故障呈现逐年增加趋势。风电机组所处环境恶劣、载荷状态、运行工况比较复杂,导致风电机组齿轮箱、轴承等主要零部件的故障率高于其它行业的同类设备,因此结合工程实际特点开展风电机组故障诊断技术的研究具有重要的现实意义和应用价值。以国内某风电场风力发电机组为对象,完成了多台风电机组的振动现场测试与故障分析诊断工作。分析结果表明设备振动的有效值、峰-峰值、峭度、峰值指标、脉冲指标等时域指标在故障指示中有有一定的互补作用,工程中应综合多个时域指标的结果对设备状态做出合理判断。VDI3834标准规定的振动有效值对风力发电机轴承故障有较好的指示作用,但对于齿轮箱,该标准的建议数值偏高。风电机组齿轮箱多故障的情况普遍存在,工程测试中应增加齿轮箱中速轴、低速轴轴承座等位置的测点。在工程诊断监测中应以振动检测为主,发现设备可能存在缺陷后,窥镜检查作为振动检测的补充,以确定最合理的维修方案。结合公司风电机组现状给出了设备监测、维护管理方面的建议。
[Abstract]:With more and more wind turbines installed, the faults of large components of wind turbines are increasing year by year. Wind turbine units are in a harsh environment, load state and operation conditions are more complex, resulting in higher failure rate of main components such as gearboxes, bearings and other similar equipment in other industries. Therefore, it is of great practical significance and application value to study the fault diagnosis technology of wind turbine combined with the practical characteristics of the project. In this paper, the vibration field test and fault diagnosis of several wind turbines have been completed by taking a domestic wind farm wind turbine as an object. The analysis results show that the effective value, peak-peak value, kurtosis, peak value, pulse index and other time-domain indexes of the equipment vibration have some complementary effects in the fault indication. In engineering, the results of multiple time domain indexes should be synthesised to make a reasonable judgment on the state of the equipment. VDI3834 standard provides a good indication for wind turbine bearing failure, but for gearbox, the suggested value of this standard is on the high side. There are many faults in the gearbox of wind turbine, so the measuring points of the middle speed shaft and the low speed bearing seat of the gear box should be added in the engineering test. Vibration detection should be the main part in engineering diagnosis and monitoring. After finding that the equipment may have defects, the peep-mirror inspection is taken as a supplement to vibration detection to determine the most reasonable maintenance scheme. Combined with the current situation of wind turbine units, the equipment monitoring, maintenance and management suggestions are given.
【学位授予单位】：华北电力大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM315

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