随机参数对水轮发电机组振动可靠性影响的仿真分析  

Simulation Analysis on Influence of Random Parameters on Vibration Reliability of Hydraulic Turbine-Generator Units

作　　者：刘福秀[1] 李兆军[1] 彭毅[1] 邱旻[1] 刘洋[1] 

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《装备制造技术》2013年第11期1-3,共3页Equipment Manufacturing Technology

基　　金：国家自然科学基金(编号:51065002);广西制造系统与先进制造技术重点实验室主任课题项目(编号:12-071-11S03)

摘　　要：针对混流式水轮发电机组主轴系统结构尺寸、材料属性、水力参数及电磁参数的随机性,依据主轴系统激励频率与固有频率之差在规定范围内的关系准则,确定主轴系统发生共振的失效功能函数,推导水轮发电机组主轴系统振动可靠度的计算公式,分析系统可靠度与系统随机参数之间的内在关系,得到一些有益的结论。Considering the randomness of the structure parameters, material parameters, hydraulic parameters and electromagnetic parameters of Francis hydraulic turbine-generator units, the resonance failure function of system is determined according to the criterion that the absolute values of difference between the natural frequencies and excitation frequencies of system should be less than specific values. The formula for calculating the probability of system is derived. The relations between the reliability of system and the uncertain parameters of system are analyzed. Some helpful conclusions are obtained.

关 键 词：水轮发电机组 随机参数 振动可靠性 仿真 

分 类 号：O231.2[理学—运筹学与控制论] TM312[理学—数学]