Multi-Field Coupling Analysis and Suppression for Biased Magnetic Noise in Transformer
Pan Chao, An Jingge, Liu Chuang, Cai Guowei, Sun Zhenglong, Luo Yuanxiang
Key Laboratory of Modern Power System Simulation and Control & Renewable Energy TechnologyMinistry of Education Northeast Electric Power University Jilin 132012 China
Abstract：In view of the noise problem when the transformer is subject to DC disturbance, the existing scholars have carried out preliminary research on this problem, but have not deeply explored the internal correlation of electromagnetic, vibration and acoustic wave cooperative coupling propagation evolution when the transformer is subject to DC magnetic bias. Based on the coupling of multiple physical fields, this paper focuses on the DC bias noise characteristics of transformer. Based on electromagnetism, the information transmission path of magnetic field force field sound field is analyzed, and a sequential coupling model of multiple physical fields is constructed. Firstly, the electromagnetic mechanical acoustic model of transformer magnetic bias effect is established. Based on electromagnetic coupling, a dynamic information base for virtual simulation of multiple physical fields is established. According to the time point index, the vibration acceleration of transformer winding and iron core is calculated with electromagnetic information as excitation; The sound pressure and sound pressure level of the winding and iron core are calculated by taking the vibration acceleration as the excitation and substituting it into the sound field propagation domain. Establish dynamic multi field physical information base. The simulation model of three-phase transformer is established, and different measuring points are selected. Based on the sequential coupling of multiple physical fields, the changes of winding magnetic leakage, Lorentz force, acceleration, noise, core vibration and noise under different DC disturbance modes are simulated and analyzed. The simulation results show that: firstly, under the DC disturbance, the magnetic flux leakage, Lorentz force, vibration acceleration, sound pressure and current of the transformer winding have similar change laws, showing the asymmetric change characteristics of "half wave enhancement and half wave attenuation"; Secondly, the vibration and noise of transformer magnetic bias effect mainly come from the iron core. A three-phase transformer dynamic simulation test platform is built, and the test points consistent with the simulation are selected to measure the vibration and noise of the transformer under different modes. The experimental results show that the experimental noise has the same trend as the simulated noise. Aiming at the vibration and noise problems of transformer, the magnetic bias noise suppression measures are proposed from the aspects of physical information monitoring and capacitance isolation. Through the comparison between simulation and experiment, the following conclusions are drawn: (1) Under DC disturbance, the vibration and sound pressure of iron core and winding change obviously; The noise increases with the increase of DC interference. The abnormal noise of transformer magnetic bias effect mainly comes from the iron core. The consistency between simulation results and experimental data verifies the correctness of this method. (2) The physical process of transformer magnetic bias effect and abnormal feature information of vibration and noise are fused, and the morphological characteristics of vibration and noise of transformer magnetic bias effect are analyzed from the perspective of multi-dimensional, multi temporal and spatial scales and multi field information. The key electromagnetic parameters are identified through measurable electrical information to reflect other unmeasurable physical characteristics.
潘超, 安景革, 刘闯, 蔡国伟, 孙正龙, 罗远翔. 变压器偏磁效应噪声特性的多场耦合分析与抑制[J]. 电工技术学报, 2023, 38(18): 5077-5088.
Pan Chao, An Jingge, Liu Chuang, Cai Guowei, Sun Zhenglong, Luo Yuanxiang. Multi-Field Coupling Analysis and Suppression for Biased Magnetic Noise in Transformer. Transactions of China Electrotechnical Society, 2023, 38(18): 5077-5088.
[1] Chen Dezhi, Feng Zhiyu, Wang Qingpeng, et al.Study of analysis and experiment for ability to withstand DC bias in power transformers[J]. IEEE Transactions on Magnetics, 2018, 54(11): 1-6. [2] Tanaka S, Murata H, Oishi T, et al.Imaging of magnetic nanoparticles using a second harmonic of magnetization with DC bias field[J]. IEEE Transactions on Magnetics, 2015, 51(2): 1-4. [3] Liu Chunming, Li Xiaohan, Li Xinjie.Simulating the vibration increase of the transformer iron core due to the DC bias[J]. International Journal of Applied Electromagnetics and Mechanics, 2017, 55(3): 423-433. [4] 张冰, 刘连光, 肖湘宁. 地磁感应电流对变压器振动、噪声的影响[J]. 高电压技术, 2009, 35(4): 900-904. Zhang Bing, Liu Lianguang, Xiao Xiangning.Effects of geomagnetically induced current on the vibration and noise of transformers[J]. High Voltage Engineering, 2009, 35(4): 900-904. [5] 尹项根, 张哲, 王友怀, 等. 变压器间及其与电流互感器暂态交互作用分析和保护对策[J]. 电力系统保护与控制, 2016, 44(23): 1-9. Yin Xianggen, Zhang Zhe, Wang Youhuai, et al.Multiple transformers and CTs interactive effect and its impact on the protective relay[J]. Power System Protection and Control, 2016, 44(23): 1-9. [6] 胡静竹, 刘涤尘, 廖清芬, 等. 基于有限元法的变压器电磁振动噪声分析[J]. 电工技术学报, 2016, 31(15): 81-88. Hu Jingzhu, Liu Dichen, Liao Qingfen, et al.Analysis of transformer electromagnetic vibration noise based on finite element method[J]. Transactions of China Electrotechnical Society, 2016, 31(15): 81-88. [7] 王佳音, 白保东, 刘宏亮, 等. 直流偏磁对变压器振动噪声的影响[J]. 电工技术学报, 2015, 30(8): 56-61. Wang Jiayin, Bai Baodong, Liu Hongliang, et al.Research on vibration and noise of transformers under DC bias[J]. Transactions of China Electrotechnical Society, 2015, 30(8): 56-61. [8] 李冰, 王泽忠, 刘海波, 等. 直流偏磁下500kV单相变压器振动噪声的试验研究[J]. 电工技术学报, 2021, 36(13): 2801-2811. Li Bing, Wang Zezhong, Liu Haibo, et al.Experiment on vibro-acoustic characteristic of 500 kV single-phase transformer under DC-bias[J]. Transactions of China Electrotechnical Society, 2021, 36(13): 2801-2811. [9] 汲胜昌, 师愉航, 张凡, 等. 电力变压器振动与噪声及其控制措施研究现状与展望[J]. 高压电器, 2019, 55(11): 1-17. Ji Shengchang, Shi Yuhang, Zhang Fan, et al.Review on vibration and noise of power transformer and its control measures[J]. High Voltage Apparatus, 2019, 55(11): 1-17. [10] 潘超, 苏昊, 蔡国伟, 等. 变压器直流偏磁下异常电流表征振动特性研究[J]. 电工技术学报, 2020, 35(9):1868-1879. Pan Chao, Su Hao, Cai Guowei, et al.Research on characterization of core vibration by abnormal current of DC bias transformer[J]. Transactions of China Electrotechnical Society, 2020, 35(9): 1868-1879. [11] Ahmad A, Javed I, Nazar W, et al.Short circuit stress analysis using FEM in power transformer on H-V winding displaced vertically & horizontally[J]. Alexandria Engineering Journal, 2018, 57(1): 147-157. [12] 潘超, 杨如月, 陈祥. 变压器不平衡运行绕组振动电磁-机械耦合分析[J]. 东北电力大学学报, 2020, 40(6): 52-60. Pan Chao, Yang Ruyue, Chen Xiang.Electromagnetic-mechanical coupling analysis of vibration of unbalanced operation windings of transformers[J]. Journal of Northeast Dianli University (Natural Science Edition), 2020, 40(6): 52-60. [13] 张鹏宁, 李琳, 聂京凯, 等. 考虑铁心磁致伸缩与绕组受力的高压并联电抗器振动研究[J]. 电工技术学报, 2018, 33(13):3130-3139. Zhang Pengning, Li Lin, Nie Jingkai, et al.Study on the vibration of high voltage shunt reactor considering of magnetostriction and winding force[J]. Transactions of China Electrotechnical Society, 2018, 33(13): 3130-3139. [14] Bakshi A, Kulkarni S V.Coupled electromagnetic-structural analysis of the spiraling phenomenon in a helical winding of a power transformer[J]. IEEE Transactions on Power Delivery, 2014, 29(1): 235-240. [15] 潘超, 陈祥, 蔡国伟, 等. 基于电磁-机械耦合原理的变压器三相不平衡运行绕组振动模-态特征[J]. 中国电机工程学报, 2020, 40(14): 4695-4707, 29. Pan Chao, Chen Xiang, Cai Guowei, et al.Mode-state characteristics of three-phase unbalanced operation winding vibration of transformer based on electromagnetic mechanical coupling principle[J]. Proceedings of the CSEE, 2020, 40(14): 4695-4707, 29. [16] 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): 3990-4000. Zhang Li, Wang Guozheng, Dong Panting, et al.Study on the vibration of grain-oriented transformer core based on the magnetostrictive intrinsic characteristics[J]. Proceedings of the CSEE, 2016, 36(14): 3990-4000. [17] 祝丽花, 杨庆新, 闫荣格, 等. 考虑磁致伸缩效应电力变压器振动噪声的研究[J]. 电工技术学报, 2013, 28(4): 1-6, 19. Zhu Lihua, Yang Qingxin, Yan Rongge, et al.Research on vibration and noise of power transformer cores including magnetostriction effects[J]. Transactions of China Electrotechnical Society, 2013, 28(4): 1-6, 19. [18] 刘行谋. 变压器直流偏磁电-磁-力特性及振动信号时频特征分析研究[D]. 重庆: 重庆大学, 2017.
2023, Vol. 38 
