兆瓦级风电齿轮箱远程实时在线测试及评价

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The vibration characteristics of a megawatt level wind turbine gearbox have a direct impact on the usability of the entire wind turbine due to its extreme working conditions.A special wind turbine gearbox structure was presented here.Also,the method of remote real-time online vibration test was analyzed and a remote online dynamic test was performed to measure its vibration characteristics and an evaluation was presented.Results showed that the main vibration frequencies of the wind turbine gearbox focus on the mesh frequencies and their multiple ones of its output stage and middle-class stage.Besides,the RMS of the vibration strength of its torque-arm is the largest,its vibration speed RMS is 1.79mm/s,the vibration level of the gearbox reaches A level.These test results provided a basis for design and dynamic optimization of a megawatt level wind turbine gearbox.兆瓦级风电齿轮箱的使用环境十分恶劣,其振动特性直接影响整个风力发电机组的使用性能。介绍某兆瓦级风电齿轮箱基本结构和传动原理,分析风机远程实时在线振动测试方法,对某兆瓦级风机齿轮箱进行远程实时在线测试和评价。表明该风电齿轮箱振动频率主要表现为中间级啮合频率、高速级啮合频率及其倍频,扭力臂振动强度最大,其振动速度有效值为1.79mm/s,齿轮箱振动强度达到A级水平。测试结果为兆瓦级风电齿轮箱设计开发和动态性能优化提供依据。