拉紧螺杆对并联电抗器的振动影响分析  

Analysis of vibration effect of tightening screw on shunt reactor

作　　者：闫荣格[1,2] 谷浩伟 张晓杰[1,2] 赵文月 张阿雪 YAN Rong-ge;GU Hao-wei;ZHANG Xiao-jie;ZHAO Wen-yue;ZHANG A-xue(State Key Laboratory of Reliability and Intelligence of Electrical Equipment,Hebei University of Technology,Tianjin 300130,China;Key Laboratory of Electromagnetic Field and Electrical Apparatus Reliability of Hebei Province,Hebei University of Technology,Tianjin 300130,China)

机构地区：[1]省部共建电工装备可靠性与智能化国家重点实验室,河北工业大学,天津300130 [2]河北省电磁场与电器可靠性重点实验室,河北工业大学,天津300130

出　　处：《电工电能新技术》2021年第3期39-45,共7页Advanced Technology of Electrical Engineering and Energy

基　　金：国家自然科学基金项目(51777054)。

摘　　要：并联电抗器在制造过程中通常采用拉紧螺杆紧固铁心,螺杆外加的压紧力不仅会影响硅钢片的磁特性,还会影响并联电抗器的振动特性。但是现阶段的研究并没有考虑压紧力对磁特性的影响,也没有考虑拉紧螺杆对并联电抗器的振动影响。针对这一现象,本文首先设计了考虑外加压紧力的磁特性测量系统,对硅钢片的磁化方向施加压紧力并进行磁特性测量。然后建立了考虑外加压紧力的并联电抗器电磁—机械强耦合模型,采用有限元法计算得到了不同压紧力下并联电抗器铁心的振动特性。最后测量了并联电抗器的振动加速度随着螺杆外加压紧力增大的变化值,验证了分析方法和结果的准确性,为进一步研究低噪声的并联电抗器提供了理论和实验指导。Tightening screw is usually used to fasten the core in the manufacturing process of shunt reactors.The pressure applied by the screw will not only affect the magnetic characteristic of the silicon steel sheet,but also affect the vibration characteristics of the shunt reactors.However,the effect of the pressure on the magnetic characteristic and the vibration effect of the tightening screw on the shunt reactors are not considered.In this paper,a magnetic characteristic measurement system considering the external pressure is designed,in which the pressure to the magnetization direction of the silicon steel sheet is applied and the magnetic characteristic of the silicon steel sheet is measured.Then the electromagnetic-mechanical strong coupling model of shunt reactor considering the influence of pressure is constructed.The vibration characteristics of shunt reactor under different pressures are calculated by the finite element method.Finally,the vibration acceleration of the shunt reactor with the increase of the pressure provided by screw is measured.The accuracy of the analysis method and results is verified,and the method provides theoretical and experimental guidance for further research on the low-noise shunt reactors.

关 键 词：并联电抗器 压紧力 磁特性 有限元法 振动 

分 类 号：TM472[电气工程—电器]