电力变压器铁心振动特性分析*

doi:10.11985/2022.01.015

摘要/Abstract

摘要：

振动是变压器在进行能量传递与电压变换过程中的固有现象,而铁心是配电变压器中振动的最主要来源。针对电力变压器的铁心振动现象开展相关研究工作。分析铁心的电-磁-力耦合机理,以某企业生产的S13-M-400/10NX2型号配电变压器为例,建立多物理场分析模型,计算额定工况下铁心的磁通密度分布、形变以及应力分布,分析激励电源中各电气特性变化对铁心形变的影响。在变压器铁心振动特性过程中采用的计算方法与得出的相关结论对预估铁心振动噪声,改善铁心结构设计均具有进一步的指导意义。

关键词: 变压器铁心, 磁致伸缩, 铁心振动, 电-磁-力多物理场耦合

Abstract:

Due to the natural tendency of siliconized plate, transformer core vibrates during the working period. The core vibration is the main vibration source in transformers. This paper focus on the vibration performance in transformer core. First, the electromagnetic-mechanical coupling mechanism is studied and a multi-physic analytic model is built for a S13-M-400/10NX2 in distribution network. Then, under rated conditions, the distribution of flux density, shape strain and stress are studied respectively. In the end, sensitivity analysis is given to show how excitation source influence the vibration performance. The proposed model contributes to estimate the core vibration and design the clamping devices for the transformer core.

Key words: Transformer core, magnetostrictive, core vibration, multi-physics coupling

中图分类号:

TM561

王青, 李怡, 林焱, 徐秋元, 连雯. 电力变压器铁心振动特性分析^*[J]. 电气工程学报, 2022, 17(1): 114-121.

WANG Qing, LI Yi, LIN Yan, XU Qiuyuan, LIAN Wen. Analysis on Vibration Problems in Transformer Core[J]. Journal of Electrical Engineering, 2022, 17(1): 114-121.

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参考文献 21

[1]	胡启凡. 变压器试验技术[M]. 北京: 中国电力出版社, 2010.
	HU Qifan. Test technology on transformer[M]. Beijing: China Electric Power Press, 2010.
[2]	GIRGIS R, ANGER J, CHU D. The sound if silence-designing and producing silent transformers[J]. ABB Review, 2008(2):47-57.
[3]	韩芳旭. 基于流固耦合方法的变压器电磁振动与噪声问题研究[D]. 沈阳: 沈阳工业大学, 2016.
	HAN Fangxu. Investigation of power transformer electromagnetic vibration and noise problem based on fluid-structure coupling method[D]. Shenyang: Shenyang University of Technology, 2016.
[4]	BARTOLETTI C, DESIDERIO M, DICAROL D, et al. Vibrio-acoustic techniques to diagnose power transofrmers[J]. IEEE Transactions on Power Delivery, 2004, 19(1):221-229. doi: 10.1109/TPWRD.2003.820177
[5]	臧状, 张彬, 李辉. 变压器铁心振动特性分析与研究[J]. 东北电力技术, 2014, 35(7):1-6.
	ZANG Zhuang, ZHANG Bin, LI Hui. Analysis and study on the vibration of transformer core[J]. Northeast Electric Power Technology, 2014, 35(7):1-6.
[6]	尹克宁. 变压器设计原理[M]. 北京: 中国电力出版社, 2003.
	YIN Kening. Principle of transformer design[M]. Beijing: China Electric Power Press, 2003.
[7]	祝丽花, 杨庆新, 闫荣格. 电力变压器磁致伸缩力的数值计算[J]. 变压器, 2012, 49(6):9-13.
	ZHU Lihua, YANG Qingxin, YAN Rongge. Numerical calculation of magnetostrictive stress of core in power transformer[J]. Transformer, 2012, 49(6):9-13.
[8]	张黎, 王国政, 董攀婷, 等. 基于磁致伸缩本征特性的晶粒取向性变压器铁心振动模型[J]. 中国电机工程学报, 2016, 36(14):3990-4001.
	ZHANG Li, WANG Guozheng, DONG Panting, et al. Study on vibration of grain-oriented transformer core based on the magnetostrictive intrinsic characteristics[J]. Proceedings of the Chinese Society for Electrical Engineering, 2016, 36(14):3990-4001.
[9]	杨威, 奚延辉, 陈国坤. 考虑叠片效应的变压器铁心多场仿真模型[J]. 科学技术与工程, 2018, 18(15):112-117.
	YANG Wei, XI Yanhui, CHEN Guokun. Multi-field simulation model of transformer core considering stacking effect[J]. Science Technology and Engineering, 2018, 18(15):112-117.
[10]	黄之明, 王乔, 张逸凡, 等. 谐波条件下500 kV联接变压器铁心应力及振动特性仿真分析[J]. 高压电器, 2019, 55(11):86-92.
	HUANG Zhiming, WANG Qiao, ZHANG Yifan, et al. Simulation analysis on stress and vibration characteristics of 500 kV connected transformer core in harmonic condition[J]. High Voltage Apparatus, 2019, 55(11):86-92.
[11]	陈庆涛, 吴兴旺, 丁国成, 等. 直流偏磁下硅钢片磁致伸缩和叠片铁心振动特性的试验研究[J]. 变压器, 2019, 56(6):59-64.
	CHEN Qingtao, WU Xingwang, DING Guocheng, et al. Experimental study on magnetostrictive properties of silicon steel sheet and vibration characteristics of laminated core under DC bias[J]. Transformer, 2019, 56(6):59-64.
[12]	AZUMA D, ITO N, OHTA M. Recent progress in Fe-based amorphous and nanocrystalline soft magnetic materials[J]. Journal of Magnetism and Magnetic Materials, 2020, 501:1-6.
[13]	PLOTKOWSKI A, CARVER K, LIST F, et al. Design and performance of an additively manufactured high-Si transformer core[J]. Materials and Design, 2020, 194:1-6.
[14]	LUCIAN-GABRIEL P, MARIA-CĂTĂLINA P, VALENTIN I, et al. Magnetic properties of manganese-zinc soft ferrite ceramic for high frequency applications[J]. Materials, 2019, 12(19):3173-3185. doi: 10.3390/ma12193173
[15]	MARKS J, VITOLINA S, DIRBA J. Magnetostrictive vibration model for evaluation of mechanical integrity of power transformer magnetic core[J]. Latvian Journal of Physics and Technical Sciences, 2019, 56(3):13-25. doi: 10.2478/lpts-2019-0016
[16]	李凯琪, 郭健, 刘军, 等. 一种高效的电力变压器绕组轴向固有振动频率计算模型[J]. 电工电能新技术, 2016, 35(2):48-52.
	LI Kaiqi, GUO Jian, LIU Jun, et al. Efficient model to calculate axial natural vibration frequency of power transformer winding[J]. Advanced Technology of Electrical Engineering and Energy, 2016, 35(2):48-52.
[17]	刘宝稳, 马宏忠, 李凯, 等. 大型变压器绕组轴向固有频率振动分布特性与实验分析[J]. 高电压技术, 2016, 42(7):2329-2336.
	LIU Baowen, MA Hongzhong, LI Kai, et al. Distribution characteristics and experimental analysis of natural frequency vibration of large transformer winding[J]. High Voltage Engineering, 2016, 42(7):2329-2336.
[18]	王丰华, 段若晨, 耿超, 等. 基于“磁机械”耦合场理论的电力变压器绕组振动特性研究[J]. 中国电机工程学报, 2016, 36(9):2555-2562.
	WANG Fenghua, DUAN Ruochen, GENG Chao, et al. Research on vibration characteristics of power transformer winding based on magnetic-mechanical coupling field theory[J]. Proceedings of the Chinese Society for Electrical Engineering, 2016, 36(9):2555-2562.
[19]	SHAO P, LUO L, LI Y, et al. Electromagnetic vibration analysis of the winding of a new HVDC converter transformer[J]. IEEE Transactions on Power Delivery, 2012, 27(1):123-130. doi: 10.1109/TPWRD.2011.2174164
[20]	AHN H, OH Y, KIM J K, et al. Experimental verification and finite element analysis of short-circuit electromagnetic force for dry-type transformer[J]. IEEE Transactions on Magnetics, 2012, 48(2):819-822. doi: 10.1109/TMAG.2011.2174212
[21]	连雯. 考虑磁致伸缩效应的电力变压器振动特性研究[D]. 南昌: 南昌大学, 2020.
	LIAN Wen. Research on vibration characteristics of power transformer considering magnetostrictive effects[D]. Nanchang: Nanchang University, 2020.

参数	数值
原边线电压有效值/kV	10
原边线电流有效值/A	23.1
原边线圈匝数	1 000
原边线圈导线	QQ-2, ϕ 2.5 mm
副边线电压有效值/V	400
副边线电流有效值/A	1 049.7
副边线圈匝数	22
副边线圈	铜箔0.75 mm×275 mm
相数	3
连接方式	Y/n
额定容量/(kV·A)	400

U₀/kV	总畸变率(%)	各次谐波含量(%)
U₀/kV	总畸变率(%)	奇数次	偶数次
10	4.0	3.2	1.6