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浙江大学学报(工学版)
J4  2012, Vol. 46 Issue (7): 1207-1212    DOI: 10.3785/j.issn.1008-973X.2012.07.009
机械与能源工程     
水电机组两相线间短路时的参、强联合共振研究
陈贵清1,董保珠1,邱家俊2
1. 唐山学院 基础部,河北 唐山 063000；2. 天津大学 机械工程学院,天津 300072
Combined parametric and forced resonance of hydro-generator
under short circuit between two phases
CHEN Gui-qing1,DONG Bao-zhu1,QIU Jia-jun2
1. Basic Teaching Department, Tangshan College,Tangshan 063000, China;2. School of Mechanical Engineering,
Tianjin University, Tianjin 300072, China
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摘要：

为了研究水电机组在发生两相线间短路时的振动和稳定性,应用机电耦联系统的能量法,在考虑转子静偏心和振动偏心的综合影响后,得到气隙磁场能量表达式,建立轴系扭转共振时的第一阶近似微分方程.分别对参激共振、强迫共振和参、强联合共振的幅频特性进行分析,得到物理参数变化对共振影响的规律,即加大电磁阻尼、减小偏心、降低激磁电流就可以减轻振动、降低危害.研究发现,单独改变机械参数或电磁参数,都会对耦联系统的共振曲线产生明显的影响；由机电相互作用引起的系统共振现象更加丰富,这是单独的机械系统所不具备的.
Abstract:

The energy method of electromechanical coupling system was applied in order to analyze vibration and stability of hydro-generator under two phases short-circuit condition. Two influencing factors, such as static eccentric and vibrating eccentric were synthetically considered, and the expression of electromagnetic field energy was obtained. The first order approximate differential equation of torsional resonance was constructed, and amplitude-frequency characteristic analysis of parametric exciting resonance, forced resonance and combined parametric and forced resonance was conducted, respectively. Results show the influencing laws of changing parameters to the resonances, namely, increasing the electromagnetic damping, reducing eccentric and lowering exciting current which can reduce vibration and harm. Only changing mechanical parameters or changing electromagnetic parameters,  will significantly impact the resonance curve of the coupled electromechanical system. The electromechanical coupling action may result in more abundant resonance phenomena, which will not occur in single mechanical system．
出版日期: 2012-07-01
:  O 322  
基金资助:

唐山市科学技术研究与发展计划资助项目（09140201A-2-6）.
作者简介: 陈贵清（1964-），男，教授，从事机电耦联系统的振动研究.E-mail:guiqing_chen@sina.com
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引用本文:

陈贵清,董保珠,邱家俊. 水电机组两相线间短路时的参、强联合共振研究[J]. J4, 2012, 46(7): 1207-1212.

CHEN Gui-qing,DONG Bao-zhu,QIU Jia-jun. Combined parametric and forced resonance of hydro-generator
under short circuit between two phases. J4, 2012, 46(7): 1207-1212.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2012.07.009    或    http://www.zjujournals.com/eng/CN/Y2012/V46/I7/1207

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