励磁机异常振动的原因分析与处理  

Cause Analysis on Abnormal Vibration of the Exciter and Its Treatment

作　　者：张平 袁珍亮 李伟 田爱斌 曹伟 牟法海 ZHANG Ping;YUAN Zhenliang;LI Wei;TIAN Aibing;CAO Wei;MU Fahai(Hebei Jiansheng Photovoltaic Technology Co.,Ltd.;Hebei Jiyan Energy and Technology Research Institute Co.,Ltd.;HCIG Guorong Energy Service Co.,Ltd.)

机构地区：[1]河北建晟光伏科技有限公司,050051 [2]河北冀研能源科学技术研究院有限公司,050051 [3]河北建投国融能源服务有限公司,050051

出　　处：《电机技术》2021年第4期48-50,54,共4页Electrical Machinery Technology

摘　　要：针对一台300 MW汽轮发电机组励磁机A级检修启动过程中出现的异常振动问题,开展振动测试和励磁机-发电机联轴器晃动度的测量,通过数据分析,确定造成励磁机异常振动的原因为励磁机-发电机联轴器存在安装偏差。现场采取了在联轴器端面加装偏垫的方法消除联轴器自身晃动度超标,对励磁机-发电机联轴器组合晃动度的影响,解决了励磁机异常振动的问题,确保了机组按时并网发电。Against the problem that abnormal vibration occurs during the A-level maintenance for a 300 MW turbine generator exciter when the exciter starting up,vibration test and measurement of wobble degree of the exciter-generator coupling are performed.It is confirmed that the installation deviation of the generator side coupling between that of the generator and exciter,results in the excessive combined wobble degree of the couplings,to bring up with the abnormal vibration of the exciter.A method to add a bias pad on the end face of the coupling on site is applied,to eliminate the wobble degree of the coupling itself,so as to reduce the influence onto the excessive combined wobble degree of the couplings,thus,solving the problem of the abnormal vibration of the exciter and ensuring the generator set connecting to the power grid on time.

关 键 词：励磁机 异常振动 联轴器晃动度 组合晃动度 

分 类 号：TM307[电气工程—电机]