胡启龙,张恒,张卫军

• 1:西安热工研究院有限公司

摘要(Abstract)：

对不同激振力作用下核电汽轮发电机定子壳体振动机理和特征开展研究，提出汽轮发电机定子壳体振动故障的分析和治理方法，并结合3台核电机组的工程实例进行分析验证。研究结果表明：定子壳体固有频率接近旋转频率或倍频电磁共振频率引起的结构共振是导致定子壳体振动超标的主要原因；转子激振力引起的定子壳体结构共振，可从减小激振力和调整定子壳体固有频率两方面进行治理，进行现场动平衡可有效降低转子激振力，调整定子壳体固有频率可通过定子底脚载荷分配调整实现；由于磁拉力大小调整范围有限，磁拉力引起的定子壳体结构共振应通过调整定子壳体固有频率进行治理。在发电机安装或检修时，应通过定子底脚载荷分配调整，使定子壳体固有频率避开旋转频率和倍频电磁共振频率，避免发电机定子壳体结构共振的发生。

关键词(KeyWords)： 核电汽轮发电机;定子壳体振动;结构共振;现场动平衡;定子底脚载荷调整

Abstract:

Keywords:

基金项目(Foundation): 国家科技重大专项（2018ZX06906011-007-002） ~~

作者(Author): 胡启龙,张恒,张卫军

DOI: 10.19666/j.rlfd.202403065

参考文献(References)：

• [1]何国安,师军.大型汽轮发电机结构振动故障的分析及治理[J].中国电力, 2015, 48(6):133-138.HE Guoan, SHI Jun. Analysis and treatment on structural vibration in large turbo-generators[J]. Electric Power,2015, 48(6):133-138.
• [2]李卫军,何玉灵,吴文健,等.大型汽轮发电机壳体异常振动诊断及治理方法研究[J].热能动力工程, 2022,37(4):175-182.LI Weijun, HE Yuling, WU Wenjian, et al. Research of diagnosis and treatment methods of abnormal vibrations of large turbogenerator housing[J]. Journal of Engineering for Thermal Energy and Power, 2022, 37(4):175-182.
• [3]夏亚磊,李勇,张文涛,等.大型汽轮发电机结构振动故障诊断与治理[J].电站系统工程, 2022, 38(3):5-8.XIA Yalei, LI Yong, ZHANG Wentao, et al. Fault diagnosis and treatment of structural vibration of large turbogenerator[J]. Power System Engineering, 2022,38(3):5-8.
• [4]赵洋,何乐,刘晋珲,等.基于近似模型的大型汽轮发电机定子端部绕组动力响应预测研究[J].振动与冲击,2023, 42(21):81-87.ZHAO Yang, HE Le, LIU Jinhui, et al. Dynamic response prediction of large turbo-generator stator end winding based on approximate model[J]. Journal of Vibration and Shock, 2023, 42(21):81-87.
• [5] MOLKI H, BAHEMMAT P, KHARAMANI A A.Theoretical study on vibration behavior of stator of 202MVA large turbo-generator[C]//3rd Conference on Thermal Power Plants, CTPP, Tehran, Iran:IEEE, 2011.
• [6]杨群发,沈文华,刘石.汽轮发电机定子绕组端部振动综合治理[J].热力发电, 2015, 44(5):125-128.YANG Qunfa, SHEN Wenhua, LIU Shi. Comprehensive treatment of end vibration in turbine generator stator[J].Thermal Power Generation, 2015, 44(5):125-128.
• [7]王九龙,王琇峰,史庆峰,等.基于底载分配的大型结构件调频方法研究及运用[J].中国电力, 2017, 50(11):33-38.WANG Jiulong, WANG Xiufeng, SHI Qingfeng, et al.Study and application of frequency adjustment on large scale structure based on bottom load redistribution[J].Electric Power, 2017, 50(11):33-38.
• [8]刘伟,史庆峰,黄少华,等. 660 MW水氢氢冷发电机定子振动的分析与处理[J].中国核电, 2018, 11(4):512-517.LIU Wei, SHI Qingfeng, HUANG Shaohua, et al.Analysis and treatment for the vibration of the 660 MW hydro-hydrogen generator stator[J]. China Nuclear Power,2018, 11(4):512-517.
• [9]张文涛,夏亚磊,李勇,等.汽轮发电机轴振和轴承座振动非同步变化现象和分析[J].汽轮机技术, 2021,63(1):57-60.ZHANG Wentao, XIA Yalei, LI Yong, et al. Analysis on the unsynchronous change phenomenon and its reason of shaft vibration and bearing vibration of turbine generator unit[J]. Turbine Technology, 2021, 63(1):57-60.
• [10]何玉灵,张伯麟,仲昊,等.汽轮发电机气隙偏心故障下的定子受力分析[J].大电机技术, 2017(5):11-17.HE Yuling, ZHANG Bolin, ZHONG Hao, et al. Turbogenerator stator force analysis under air-gap eccentricity fault[J]. Large Electric Machine and Hydraulic Turbine,2017(5):11-17.
• [11] ZHANG W, HE Y L, XU M X, et al. A comprehensive study on stator vibrations in synchronous generators considering both single and combined SAGE cases[J].International Journal of Electrical Power and Energy Systems, 2022, 143:108490.
• [12] HE Y L, SUN Y X, XU M X, et al. Rotor UMP characteristics and vibration properties in synchronous generator due to 3D static air-gap eccentricity faults[J].IET Electric Power Applications, 2020, 14(6):961-971.
• [13]透平型发电机定子机座、铁心动态特性和振动试验方法及评定:JB/T 10392—2013[S].北京:机械工业出版社, 2014:4-6.Dynamic characteristic and vibration test methods of turbo-generators on stator frame&core and evaluation criteria:JB/T 10392—2013[S]. Beijing:China Machine Press, 2014:4-6.
• [14]卫友根,徐福娣.水氢氢600 MW汽轮发电机机座底脚承载调整[J].上海大中型电机, 2003, 2(1):8-14.WEI Yougen, XU Fudi. Load-bearing adjustment of the base foot of a water-hydrogen-hydrogen 600 MW steam turbine generator[J]. Shanghai Medium and Large Electrical Machines, 2003, 2(1):8-14.