东方200MW汽轮发电机组多次发生不稳定振动,直接影响机组安全稳定地运行。本文通过理论计算和电站工业性试验,着重讨论:(1)径向滑动轴承的计算方法;(2)影响机组系统稳定性裕度不足的因素;(3)径向轴承结构型式对机组系统稳定性的影响。在上述基础上,提出大容量汽轮发电机组转子支承,如采用合适的轴承结构,使其油膜和转子的动力特性与基础的动力性能有良好的匹配,则机组系统稳定性裕度能满足机组安全可靠运行的要求。 The unstable vibration of the 200 MW turbogenerator in the East has a direct impact on the safe and stable operation of the unit. In this paper, theoretical calculation and industrial test of power plant are focused on: (1) Calculation method of radial plain bearing; (2) Factors affecting insufficient margin of stability of generating unit system; (3) Stability of radial bearing structure to unit system Sexual effects. Based on the above, the rotor support of large-capacity steam turbine generator unit is proposed. If a suitable bearing structure is adopted, the dynamic characteristics of oil film and rotor are well matched with the basic dynamic performance, the stability margin of the unit system can meet the requirement of unit Safe and reliable operation requirements.