摘要
针对某环保电厂发电机转子启动过程中过临界振动偏高的问题,分析其原因是由于发电机转子一阶质量不平衡较大,发现发电机转子存在一定的热变形,导致停机过临界时振动较小。通过对发电机转子进行现场高速动平衡,将发电机转子过临界振动值有效降低,有效解决了该机组冷态启动异常问题。
Aiming at the problem of high over-critical vibration of generator rotor during start-up process in an environmental protection power plant,the reason is that the first-order mass imbalance of the generator rotor is large.It is found that there is a certain thermal deformation in the generator rotor,which results in a small vibration when the generator stops over the critical condition.Through high-speed dynamic balance of generator rotor on site,the over critical vibration value of generator rotor is effectively reduced,and the abnormal cold start of the unit is effectively solved.
作者
徐威
王乃斌
府冬明
XU Wei;WANG Naibin;FU Dongming(China Power Hua Chuang Electricity Technology Research Co.,Ltd.,Shanghai 200086,China;State Grid Heilongjiang Electric Power Co.,Ltd.Electric Power Research Institute,Harbin 150030,China)
出处
《黑龙江电力》
CAS
2019年第6期548-550,554,共4页
Heilongjiang Electric Power
关键词
汽轮发电机
过临界振动
动平衡
steam turbine
over-critical vibration
dynamic balance
