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Wind turbine main gearbox test stand

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Wind Turbine Main Gearbox Test StandWind Turbine Main Gearbox Test StandGE Wind Energy, Erie, PAThis test stand was designed for post-overhaul testing of the 1.5mW gearbox. It determines vibration and acoustical characteristics as well as the verifying that the output speed and load requirements are within specifications. The unit under test (UUT) is connected to an identical gearbox that runs in reverse and simulates the wind turbine torque. The entire test stand is driven and loaded by four GE traction motors and controlled by a Lab View® Data System.

From designing industrial turbine test cells to developing alternative fuel power plants, to making Wind Turbines more efficient, Emprise engineers are respected for combining the best in electrical and mechanical design to develop cost effective solutions. Emprise works with manufacturers of utility power plants, such as gas turbines and fuel cells, to successfully solve all kinds of testing problems.

Brief Description of the Project Problem Definition As GE Wind Energy expanded their wind turbine operations, they decided to locate a key gearbox assembly operation in an existing GE Transportation plant in Erie, Pennsylvania. While this plant is well suited to this purpose, no facility existed there that was capable of testing the

file:///F|/资料/风电齿轮箱/index.htm（第 2／7 页）2008-4-17 15:03:53Wind Turbine Main Gearbox Test Standfinished product.

Prior to shipment and installation atop a wind turbine tower, the gearbox’s performance must be verified. This requires gearbox operation at full power and speed. Where specific speed/torque test points and accurate data on vibration, noise, lube oil temperature and gear mesh geometry can be obtained.

The problem was further complicated by need to move the test gearboxes quickly thru the test process. Further, the test site was to be on the main manufacturing floor. Noise interference between the two activities would be an obstacle as would the lack of a dynamic block or machine base for mounting the test equipment. The plant utility system would require extensive upgrade to provide the drive power should the full 1.5 mW be required.

When complete, the test facility would be operated by skilled GE technicians but not by computer engineers. Thus, the computer controlled data acquisition and control system must be robust and user friendly.

Technical Solutions The most critical technical issue for the gearbox test stand was the problem of simulating the 578,000 lb-ft, 18 rpm input of the wind turbine. The wind turbine gearbox is one of the few devices available with this duty rating. Therefore, using another, identical gearbox (operating in reverse) proved to be an ideal source of this speed/torque combination.

The test gearbox is connected to a second, permanently mounted wind turbine gearbox at the input shaft. A 1.5 mW motor system drives the output shaft of the permanent gearbox which drives the input of the test gearbox at the desired speed and torque. A 1.5 mW generator system is connected to the test gearbox output shaft and simulates the desired load.

These motors are variable frequency, A.C. machines controlled by solid state drives. These drives generate AC power by inverting DC power, thus the DC circuits of the two drives could be connected so that the power generated as load could be returned to the motor inverters and used to simulate the wind turbine input power.

GE Transportation also manufactures the wheel motors and drives used in large open pit mining trucks and locomotives. Analysis revealed that two of the GEB-16A4 model wheel motors would provide the correct speed, torque and power required for the proposed test. Likewise, the breaking function of these motors was sufficient to simulate the generator load.

file:///F|/资料/风电齿轮箱/index.htm（第 3／7 页）2008-4-17 15:03:53Wind Turbine Main Gearbox Test StandFigure 1 illustrates this closed loop concept. The high torque is produced by the reciprocal gearbox and the power circulates from the generator to the motor thru the solid state drives. System losses are compensated by a 600 kW converter connected between the utility power line and the drive DC buss.

Figure 1 – Closed Loop Drive/Load System The two gearboxes are normally mounted in elastomeric bushings to minimize noise and vibration. The test fixture duplicates this resilient mounting feature. Unfortunately, these soft mounts created an alignment problem between the test and reciprocal gearbox.

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齿轮箱运行评估报告范文

齿轮箱运行评估报告范文

齿轮箱运行评估报告范文1. 引言齿轮箱是工业生产中常见的机械传动装置，广泛应用于各个领域。

其主要功能是将电动机输出的高速旋转转变为低速高扭矩输出，以满足不同的工作需求。

本报告对一台齿轮箱的运行情况进行评估分析，旨在发现问题并提出解决方案，以确保其正常高效运行。

2. 背景信息本报告评估的齿轮箱用于某汽车制造厂的生产线。

该齿轮箱型号为XYZ-1000，传动比为1:10，输出扭矩为1000Nm。

3. 运行评估方法为了评估齿轮箱的运行情况，我们采取了以下方法：- 对齿轮箱进行外观检查，检查是否存在明显的损坏或异物。

- 根据人工观察和测量，判断齿轮箱是否有异常噪音或振动。

- 分析油液样本，检测是否存在金属颗粒或其他杂质。

- 确定运行温度以评估齿轮箱的工作状况。

4. 评估结果经过以上评估方法的应用，我们得出了以下评估结果：4.1 外观检查通过对齿轮箱的外观检查，未发现明显的损坏或异物，表明齿轮箱的密封性良好。

4.2 声音和振动分析对齿轮箱进行观察和测量后，发现齿轮箱在运行过程中存在一定的噪音和振动，但其不超过正常范围。

4.3 油液分析对齿轮箱的油液样本进行分析后，未发现大量的金属颗粒或其他杂质，说明齿轮箱的磨损情况较好。

4.4 温度评估通过对齿轮箱运行时的温度测量，发现齿轮箱的运行温度在正常范围内，表明其散热效果良好。

5. 问题分析基于以上评估结果，我们对齿轮箱的运行情况进行了分析：5.1 噪音和振动尽管齿轮箱在运行过程中存在一定的噪音和振动，但其在正常范围内，不会对正常工作产生实质性的影响。

5.2 磨损情况通过油液分析结果可以看出，齿轮箱的磨损情况良好，未发现大量的金属颗粒或其他杂质。

5.3 散热效果齿轮箱的运行温度在正常范围内，表明其散热效果良好，不会导致过热或其他问题的发生。

6. 解决方案基于以上问题分析，我们提出以下解决方案：6.1 噪音和振动为了减少齿轮箱的噪音和振动，我们建议对其支撑结构进行加固，并在必要的位置添加减震装置。

基于改进LMD方法的风电机组齿轮箱故障诊断研究

基于改进LMD方法的风电机组齿轮箱故障诊断研究

第42卷第3期2021年3月自动化仪表P R O C E S S A U T O M A T I O N I N S T R U M E N T A T I O NV o l.42No. 3M a r. 2021基于改进L M D方法的风电机组齿轮箱故障诊断研究李辉，邓奇(西安理工大学电气工程学院，陕西西安710048)摘要:局部均值函数的求取是局部均值分解（L M D)的关键环节。

针对局部均值函数求取存在偏差进而造成模态混叠的问题，提出 了一种基于局部积分均值的L M D风电机组齿轮箱故障诊断方法。

该方法改变了对相邻两极值点求平均值的思路，采用求取相邻两极值点的局部积分均值，再通过滑动平均法进行平滑处理，最终得到局部均值函数。

为实现风电机组齿轮箱故障诊断，首先采用改进L M D方法对信号进行降噪处理，然后采用多尺度熵提取降噪处理后信号的特征向量，最后采用极限学习机进行故障诊断。

通过仿真分析，证明了该方法能有效解决模态混叠现象，提高了 L M D的分解精度。

试验验证分析表明，该方法的故障诊断准确率为100%，通 过对比分析表明，该方法优于其他故障诊断方法，具有工程应用价值。

关键词:局部积分均值；风机齿轮箱；局部均值分解；故障诊断；极值点；多尺度熵；极限学习机；模态混叠中图分类号：T H132. 41 文献标志码：A D0I： 10. 16086/j. cnki. issn 1000-0380. 2020060025Study on Fault Diagnosis of Wind Turbine GearboxBased on Improved LMD MethodLI H u i,D E N G Qi(School of Electrical E n g i n e ering,Xi5an University of T e c h n o l o g y,X i'an 710048,China)A b s t r a c t：F i n d i n g the local m e a n function is the k e y link of the local m e a n d e c o m p o s i t i o n(L M D). A fault diagnosis for the g e a r b o x of the L M D w i n d turbine b a s e d o n the local integral m e a n is p r o p o s e d c o n s i d e r i n g its deviation a n d m o d e m ixing. T h i s m e t h o d a p p l i e d local integral m e a n v a l u e of the a d j a c e n t t w o e x t r e m e points t h e n s m o o t h i n g b y the m o v i n g a v e r a g e m e t h o d to finally obtains the local m e a n function instead of a v e r a g i n g the t w o a d j a c e n t e x t r e m e points. In or d e r to realize the fault diagnosis of w i n d turbine g e a r b o x,t h e i m p r o v e d L M D m e t h o d for d e-n o i s i n g the signal a n d multi-scale e n t r o p y for extracting the feature vector of the d e-n o i s e d signal, a n d finally the limit learning m a c h i n e is used. S i m u l a t i o n analysis p r o v e s that this m e t h o d c a n effectively solve the m o d e m i x i n g p h e n o m e n o n a n d i m p r o v e the d e c o m p o s i t i o n a c c u r a c y of L M D.T h r o u g h e x p e r i m e n t a l verification,this m e t h o d h a s a fault diagnosis a c c u r a c y rate of 100%. T h r o u g h c o m p a r a t i v e analysis,it is of e n g i n e e r i n g applicatin va l u e superior to other fault diagnosis m e t h o d s.Key w ords：L o c a l integral m e a n；W i n d turbine g e a r b o x；L o c a l m e a n d e c o m p o s i t i o n；Fault d i a g n o s i s；E x t r e m e p o i n t；Multiscale e n t r o p y；E x t r e m e learning m a c h i n e；M o d e m i x i n g〇引言近年来，由于全球环境恶化和资源短缺，使得世界 各国逐渐开始重视开发和利用可再生能源。

风电机组电工术语

风电机组电工术语

风电专业英语电工术语风力发电机组2.1 风力机和风力发电机组2.1.1 风力机wind turbine2.1.2 风力发电机组 wind turbine generator system ; WTGS (abbreviation)2.1.3 风电场wind power station ；wind farm2.1.4 水平轴风力机horizontal axis wind turbine2.1.5 垂直轴风力机vertical axis wind turbine2.1.6 轮毂（风力机）hub （for wind turbines）2.1.7 机舱nacelle2.1.8 支撑结构（风力机）support structure （for wind turbines）2.1.9 关机（风力机）shutdown （for wind turbines）2.1.10 正常关机（风力机）normal shutdown （for wind turbines）2.1.11 紧急关机（风力机）emergency shutdown （for wind turbines）2.1.12 空转（风力机）idling （for wind turbines）2.1.13 锁定（风力机）blocking （for wind turbines）2.1.14 停机parking2.1.15 静止standstill2.1.16 制动器（风力机）brake（for wind turbines）2.1.17 停机制动（风力机）parking brake（for wind turbines）2.1.18 风轮转速（风力机）rotor speed（for wind turbines）2.1.19 控制系统（风力机）control system（for wind turbines）2.1.20 保护系统（风力发电机组）protection system （for WTGS）2.1.21 偏航yawing2.2 设计和安全参数2.2.1 设计工况design situation2.2.2 载荷状况load case2.2.3 外部条件（风力机）external conditions（for wind turbines）2.2.4 设计极限design limits2.2.5 极限状态limit state2.2.6 使用极限状态serviceability limit states2.2.7 最大极限状态ultimate limit state2.2.8 安全寿命safe life2.2.9 严重故障（风力机）catastrophic failure （for wind turbines）2.2.10 潜伏故障latent fault ；dormant failure2.3 风特性2.3.1 风速wind speed2.3.2 风矢量wind velocity2.3.3 旋转采样风矢量rotationally sampled wind velocity2.3.4 额定风速（风力机）rated wind speed （for wind turbines）2.3.5 切入风速cut--in wind speed2.3.6 切出风速cut--out wind speed2.3.7 年平均annual average2.3.8 年平均风速annual average wind speed2.3.9 平均风速mean wind speed2.3.10 极端风速extreme wind speed2.3.11 安全风速（拒用）survival wind speed （deprecated）2.3.12参考风速reference wind speed2.3.13 风速分布wind speed distribution2.3.14 瑞利分布RayLeigh distribution2.3.15 威布尔分布Weibull distribution2.3.16 风切变wind shear2.3.17 风廓线风切变律wind profile ；wind shear law2.3.18 风切变指数wind shear exponent2.3.19 对数风切变律logarithmic wind shear law2.3.20 风切变幂律power law for wind shear2.3.21 下风向down wind2.3.22 上风向upwind2.3.23 阵风gust2.3.24 粗糙长度roughness length2.3.25 湍流强度turbulence intensity2.3.26 湍流尺度参数turbulence scale parameter2.3.27 湍流惯性负区inertial sub--range2.4 与电网的联接2.4.1 互联（风力发电机组）interconnection （for WTGS）2.4.2 输出功率（风力发电机组）output power （for WTGS）2.4.3 额定功率（风力发电机组）rated power （for WTGS）2.4.4 最大功率（风力发电机组）maximum power （of a WTGS ）2.4.5 电网联接点（风力发电机组）network connection point （for WTGS）2.4.6 电力汇集系统（风力发电机组）power collection system （for WTGS）2.4.7 风场电气设备site electrical facilities2.5 功率特性测试技术2.5.1 功率特性power performance2.5.2 净电功率输出net electric power output2.5.3 功率系数power coefficient2.5.4 自由流风速free stream wind speed2.5.5 扫掠面积swept area2.5.6 轮毂高度hub height2.5.7 测量功率曲线measured power curve2.5.8 外推功率曲线extrapolated power curve2.5.9 年发电量annual energy production2.5.10 可利用率（风力发电机组）availability （for WTGS）2.5.11 数据组（功率特性测试）data set （for power performance measurement）2.5.12 精度（风力发电机组）accuracy （for WTGS）2.5.13 测量误差uncertainty in measurement2.5.14 分组方法method of bins2.5.15 测量周期measurement period2.5.16 测量扇区measurement sector2.5.17 日变化diurnal variations2.5.18 桨距角pitch angle2.5.19 距离常数distance constant2.5.20 试验场地test site2.5.21 气流畸变flow distortion2.5.22 障碍物obstacles2.5.23 复杂地形带complex terrain2.5.24 风障wind break2.6 噪声测试技术2.6.1 声压级sound pressure level2.6.2 声级weighted sound pressure level；sound level2.6.3 视在声功率级apparent sound power level2.6.4 指向性（风力发电机组）directivity （for WTGS）2.6.5 音值tonality2.6.6 声的基准风速acoustic reference wind speed2.6.7 标准风速standardized wind speed2.6.8 基准高度reference height2.6.9 基准粗糙长度reference roughness length2.6.10 基准距离reference distance2.6.11 掠射角grazing angle。

【风力发电机齿轮箱可靠性优化设计文献综述4200字】

【风力发电机齿轮箱可靠性优化设计文献综述4200字】

风力发电机齿轮箱可靠性优化设计文献综述【可参考以下写作提纲】1．前言（简要说明阅读文献背景、目的和范围以及选题的发展现状及争论焦点，不少于800字）随着社会经济的不断发展，人们对能源的需求也越来越大，而不可再生资源在不断消耗，寻求新的可再生资源成为当务之急。

至此，风力发电机应运而生，其装机灵活、基建周期短、环境效益高的诸多优点，促使风力发电成为国家新能源开发的关键技术[1]。

“中国制造2025”新能源装备实施方案指出，要在2025 年前，新能源装备制造业形成完善的产业体系，有效支撑新能源发展[2]。

世界风能协会（World Wind Energy Association, WWEA）统计，截止到2019 年底，全球安装的所有风力发电机的总容量达到6508GW。

2019年增加了59667MW，所有已安装的风力发电机可以满足全球6%以上的电力需求。

中国和美国都表现出强劲的增长势头，分别有275GW 和91GW 的新装机容量，均为近五年来最大的市场容量。

在取得令世界瞩目成绩的同时，也必须正视中国风电产业快速发展过程中所面临的各种问题。

风力发电机一般安装在偏远的户外或者海上，长时间在数十米高空服役，长期运行在振动、潮湿、沙尘、腐蚀、变速、制动等复杂恶劣环境中，各类故障频发且难以提前预警，带病运行将导致设备损坏、风场停机，维护维修成本提高[3]。

风力发电机运行在复杂的环境中，包括多套复杂的子系统。

齿轮箱是风力发电机实现增速的关键子系统，其健康运行关系着风力发电机的健康状态。

齿轮箱内部结构复杂，由多组齿轮、轴承、齿轮轴及润滑冷却系统组成，长期受到交变载荷、冲击载荷的作用，齿轮箱在恶劣的环境下运行，容易发生故障[4]。

目前，大型风力发电机的设计寿命要求不低于20 年，机组的年可利用率不小于97%[5]。

齿轮箱是风力发电机实现增速功能的关键所在，齿轮箱的寿命直接影响着风力发电机的寿命，齿轮箱能安全可靠的运行是风力发电机可靠的必要条件。