中国电力 ›› 2020, Vol. 53 ›› Issue (10): 34-41.DOI: 10.11930/j.issn.1004-9649.202004089

• 国家“十三五”智能电网重大专项专栏:(一)电工磁性材料及应用技术专栏 • 上一篇    下一篇

电力变压器铁心、油箱振动特性及与近场噪声的关联性研究

樊超1, 聂京凯1, 肖伟民2, 王广周3, 汲盛昌4, 杨富尧1, 刘洋1, 杜鹏宇5   

  1. 1. 全球能源互联网研究院有限公司,北京 102211;
    2. 北京市劳动保护科学研究所,北京 100054;
    3. 国网河南省电力公司电力科学研究院,河南 郑州 450052;
    4. 西安交通大学,陕西 西安 710049;
    5. 国网石家庄供电分公司,河北 石家庄 050000
  • 收稿日期:2020-04-13 修回日期:2020-09-09 发布日期:2020-10-05
  • 作者简介:樊超(1985—),男,硕士,高级工程师,从事噪声振动与控制研究,E-mail:fanchao006@126.com
  • 基金资助:
    国家电网有限公司总部科技项目(高压变电设备降噪用带隙耦合声学超材料应用基础研究,5500-202058312A-0-0-00)

Study on Vibration Characteristics of Power Transformer Core and Oil Tank and the Correlation with Near Field Noise

FAN Chao1, NIE Jingkai1, XIAO Weimin2, WANG Guangzhou3, JI Shengchang4, YANG Fuyao1, LIU Yang1, DU Pengyu5   

  1. 1. Global Energy Interconnection Research Institute Co.Ltd., Beijing 102211, China;
    2. Beijing Municipal Institute of Labor Protection-State, Beijing 100054, China;
    3. Power Science Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China;
    4. Xi'an Jiaotong University, Xi'an 710049, China;
    5. State Grid Shijiazhuang Power Supply Company, Shijiazhuang 050000, China
  • Received:2020-04-13 Revised:2020-09-09 Published:2020-10-05
  • Supported by:
    This work is supported by Science and Technology Project of SGCC (Basic Research on Bandgap Coupled Acoustic Metamaterials for Noise Reduction in High Voltage Transformers, No.5500-202058312A-0-0-00)

摘要: 变压器的噪声主要是由油箱的振动产生,油箱的振动主要是由铁心的振动产生,而铁心的振动主要是由电磁力产生,为了研究铁心电磁力、铁心振动、油箱振动与近场噪声的关联关系,采用虚功法对不同电压下不同方向变压器铁心的电磁力进行了仿真计算,采用有限元分析法对不同电压下变压器铁心的振动特性进行了仿真计算,并利用加速度传感器测试了不同电压作用下不同方向铁心、油箱的振动特性,以及变压器的近场噪声特性,探讨了铁心振动的传递过程,发现铁心电磁力的大小、方向、频率与铁心振动、油箱振动、变压器近场噪声具有明显的相关性。

关键词: 变压器, 铁心, 油箱, 电磁, 振动, 噪声

Abstract: The noise of the transformer is mainly generated by the vibration of the oil tank, which is mainly generated by the vibration of the iron core, while the vibration of the iron core is mainly generated by the electromagnetic force. In order to study the correlation among ferromagnetic force, core vibration, oil tank vibration and near field noise. In this paper, the electromagnetic force of transformer in different direction under different voltage is simulated by using virtual work method, the vibration state of the core is analyzed by finite element method. And the vibration characteristics of the core and oil tank in different directions under different voltages and the near field noise characteristics of the transformer were tested by using acceleration sensors. At last the transmission process of core vibration is discussed. The results show that the magnitude, direction and frequency of ferromagnetic force are obviously correlated with the vibration of ferromagnetic core, the vibration of oil tank and the noise of transformer near field.

Key words: transformer, iron core, fuel tank, electromagnetism, vibration, noise