...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of information and computational science >Modeling and Calculation Analysis of Torsional Vibration for Turbine Generator Shafts
【24h】

Modeling and Calculation Analysis of Torsional Vibration for Turbine Generator Shafts

机译：汽轮发电机组轴系扭振建模与计算分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The torsional vibration of turbine-generator shafts occurs due to the disturbance of electric power system. The coupling interaction between disturbance of electric power system and torsional vibration of shafts makes turbine-generator oscillate. Alternating torsional stress due to large torsional vibration decreases the life of shafts, even results in shafts broken. It is significant to calculate and analyze the natural properties and response of torsional vibration excited by the disturbance of electric power system in order to analyze and prevent catastrophic accident. A new method of response calculation of torsional vibration of turbine-generator shafts, the Increment Transfer Matrix method (ITM), which combines the Riccati transfer matrix method with the Newmark-βstep-by-step integral method, is presented. By the ITM method, the transient response of torsional vibration of turbine-generator shafts, especially at the dangerous cross-sections, can be calculated. The response spectrum of torsional vibration can be obtained by fast Fourier transform algorithm. It is proved that the system is good precision, convenient use, friendly interface, and visual calculation. The responses of torsional vibration of 200MW turbine-generator shafts due to the generator at non-all-phase operation are calculated and analyzed. The natural characteristics and responses of torsional vibration of shafts of 200MW turbine-generator are simulated and analyzed under the catastrophic accident condition. The cause of bolt broken of the coupling of intermediate-pressure rotor and low-pressure rotor and the coupling of generator rotor and exciter rotor are discussed. The results are identical with the data recorded in field.
机译：涡轮发电机轴的扭转振动是由于电力系统的干扰而产生的。电力系统的扰动与轴的扭转振动之间的耦合相互作用使涡轮发电机产生振动。由于较大的扭转振动而产生的交替扭转应力会缩短轴的使用寿命，甚至导致轴断裂。计算和分析电力系统扰动引起的扭转振动的自然特性和响应，对于分析和预防灾难性事故具有重要意义。提出了一种将Riccati传递矩阵法与Newmark-β逐步积分法相结合的增量传递矩阵法（ITM），作为汽轮发电机组轴系扭振响应计算的一种新方法。通过ITM方法，可以计算出涡轮发电机轴的扭转振动的瞬态响应，尤其是在危险截面处。扭转振动的响应谱可以通过快速傅立叶变换算法获得。实践证明，该系统精度高，使用方便，界面友好，计算直观。计算和分析了发电机在非全相运行时由于发电机引起的200MW汽轮发电机轴的扭转振动响应。在灾难性事故情况下，对200MW汽轮发电机组轴的自然特性和扭转振动的响应进行了仿真和分析。讨论了中压转子与低压转子之间的联接螺栓断裂以及发电机转子与励磁机转子之间的联接螺栓断裂的原因。结果与现场记录的数据相同。

著录项

  • 来源
    《Journal of information and computational science》 |2010年第10期|p.2174-2182|共9页
  • 作者

    Qing He; Dongmei Du;

  • 作者单位

    National Engineering Laboratory for Biomass Power Generation Equipment Key Laboratory of Condition Monitoring and Control for Power Plant Equipment School of Energy Power and Mechanical Engineering, North China Electric Power University Beijing 102206, China;

    National Engineering Laboratory for Biomass Power Generation Equipment Key Laboratory of Condition Monitoring and Control for Power Plant Equipment School of Energy Power and Mechanical Engineering, North China Electric Power University Beijing 102206, China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    torsional vibration; transfer matrix method; turbine generator shafts; electro-mechanical coupling;

    机译：扭转振动转移矩阵法涡轮发电机轴;机电耦合;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号