水轮发电机组转子动平衡试验  

Rotor dynamic balance test for hydroelectric unit

作　　者：阎宗国[1] 周凌九[1] 何军兵 彭光杰[3] 罗永要[3] 张静[3] 罗斌 王正伟[3] 

机构地区：[1]中国农业大学水利与土木工程学院,北京100083 [2]浙江东方集团机电工程有限公司,杭州310006 [3]清华大学水沙科学与水利水电工程国家重点实验室,北京100084 [4]小浪底水电厂,河南济源454681

出　　处：《水力发电学报》2012年第2期235-239,共5页Journal of Hydroelectric Engineering

基　　金：国家自然科学基金(50879036;50979044);国家高技术研究发展计划(2008AA05Z447;2009AA05Z424);水沙科学与水利水电工程国家重点实验室统筹研究课题资助(2009T3)

摘　　要：水轮发电机组的振动很多是由于转子质量不平衡造成的,开展动平衡试验是水轮发电机组启动试验的一项重要内容。本文首先介绍了动平衡试验的方法和关键技术,并对转子进行了有限元动力特性计算,分析了试重块加在转子不同端面时对平衡效果的影响,提出了相对于不同转速、不同尺寸特征的转子动平衡试验适合的配重方案。然后对土耳其YAVUZ电站2号机组进行了动平衡试验,准确找到了不平衡质量的相位并通过加试重块确定了最终的配重量,有效地改善了机组的振动和摆度过大的问题。Vibrations of hydroelectric unit are often caused by unbalance of rotor weight,and to a unit at its starting test stage,dynamic balance test is an important work.This paper demonstrates the method and key technology of such test,and through finite element dynamic analysis on the rotor,analyzes the balance influence that is caused by an added weight on different planes of the rotor.Then a balance weight plan is proposed for different speeds and different dimension features of the rotor.A dynamic balance test was carried out on the unit 2 of YAVUZ hydropower station in Turkey.In this test,the phase of unbalance weight was exactly detected and confirmed,and the vibration and swing problem of the unit was solved by adding balance weight to the rotor.

关 键 词：水轮发电机组 动平衡试验 振动 摆度 相位 

分 类 号：TM312[电气工程—电机]