变压器绕组对局部放电电磁波传播特性的影响

赵煦 1; 孟永鹏 1; 成永红 1; 邹琳 2; 刘通 2; 李锐海 2

doi:10.7652/xjtuxb201504002

您当前的位置：

首页 >

文章列表页 >

变压器绕组对局部放电电磁波传播特性的影响

更新时间：2025-07-09

- 变压器绕组对局部放电电磁波传播特性的影响
- Simulation Analysis of Effects of Transformer Windings on Propagation Characteristics of Partial Discharge Electromagnetic Waves
- 西安交通大学学报 2015年49卷第4期页码：6-11
- 作者机构：
  
  西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
  
  : 2014-10-23。作者简介: 赵煦(1982—),男,博士生;成永红(通信作者),男,教授,博士生导师。基金项目: 国家自然科学创新群体资助项目(51221005);南方电网科技项目
- DOI：10.7652/xjtuxb201504002
  中图分类号： TM85
- 网络首发：2015-04-10，
  
  纸质出版：2015
- 稿件说明：
移动端阅览
赵煦 1, 孟永鹏 1, 成永红 1, 等. 变压器绕组对局部放电电磁波传播特性的影响[J]. 西安交通大学学报, 2015,49(4):6-11.

Simulation Analysis of Effects of Transformer Windings on Propagation Characteristics of Partial Discharge Electromagnetic Waves[J]. 2015, 49(4): 6-11.
赵煦 1, 孟永鹏 1, 成永红 1, 等. 变压器绕组对局部放电电磁波传播特性的影响[J]. 西安交通大学学报, 2015,49(4):6-11. DOI： 10.7652/xjtuxb201504002.

Simulation Analysis of Effects of Transformer Windings on Propagation Characteristics of Partial Discharge Electromagnetic Waves[J]. 2015, 49(4): 6-11. DOI： 10.7652/xjtuxb201504002.

摘要

为了研究变压器绕组对局部放电电磁波传播特性的影响

根据一台330 kV变压器绕组的实际结构

建立了变压器绕组仿真计算模型。采用时域有限差分法(FDTD)研究了局部放电发生在绕组内部和外部时

变压器绕组对电磁波时域波形幅值的衰减规律

以及在相同的条件下绕组对局部放电电磁波频谱分布的影响

并通过与无障碍空间中传播时局部放电电磁波的频率特性进行对比

得到了局部放电电磁波不同频率段的频率幅值和

及其在总频率幅值和中所占的比例。研究发现:绕组对内部放电和外部放电产生的局部放电电磁波传播特性的影响不同

绕组对内部放电产生的不同频率段电磁波的幅值有增强的作用

而且对1 000～2 500 MHz高频段的增强作用比其他频率段强; 绕组对外部放电产生的电磁波幅值有较强衰减作用

穿过绕组后电磁波的幅值至少衰减为无障碍空间时幅值的70%。

Abstract

A simulation model for transformer windings is proposed to study the effect of the transformer windings on the propagation of electromagnetic(EM)wave induced by partial discharge(PD). The study is based on the size of windings in a 330 kV power transformer. A finite difference time domain(FDTD)method is used to analyze the propagation of PD EM wave in both internal and external windings. The effect of transformer windings on the propagation characteristics of PD electromagnetic waves is studied by applying PD pulse current signals in different places. This model is also used to study the effect of winding structures on the frequency spectrum of PD electromagnetic waves. The sum of the peak amplitudes in different bands and their proportions in the total sum are calculated through dividing the frequency spectrum into different bands. The calculation results are compared with those obtained in the places with and without obstacles(windings). It is found that the effects of transformer windings on the propagation characteristics of typical partial discharge electromagnetic waves are different in different places

and that the propagation characteristics depend on the location of PD according to windings. Windings increase the amplitude of EM waves from internal PD

especially in the frequency band 1 000 MHz-2 500 MHz; and make a strong attenuation of 30% on the amplitude of EM waves from external PD.

关键词

Keywords

references

王昌长, 李福祺, 高胜友. 电力设备的在线监测与故障诊断 [M]. 北京: 清华大学出版社, 2006: 3.

BARTNIKAS R. Partial discharges: their mechanism, detection and measurement [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2002, 9(5): 763-808.

COENEN S, TENBOHLEN S, MARKALOUS S, et al. Sensitivity of UHF PD measurements in power transformers [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(6): 1553-1558.

TENBOHLEN S, DENISSOV D, HOEK S, et al. Partial discharge measurement in the ultra high frequency(UHF)range [J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2008, 15(6): 1544-1552.

李军浩, 司文荣, 杨景刚, 等. 电力变压器局部放电特高频信号外部传播特性研究 [J]. 西安交通大学学报, 2008, 42(6): 718-722.

LI Junhao, SI Wenrong, YANG Jinggang, et al. Propagation characteristic of partial discharge ultra high frequency signals outside transformer [J]. Journal of Xi'an Jiaotong University, 2008, 42(6): 718-722.

MORITA N, KOZAKO M, HIKITA M, et al. Study of partial discharge induced electromagnetic wave propagation property in power transformer model [C]∥ The 2012 IEEE International Conference on Condition Monitoring and Diagnosis. Piscataway, NJ, USA: IEEE, 2012: 44-47.

常文治, 唐志国, 李成榕, 等. 变压器局部放电UHF信号传播特性的仿真分析 [J]. 高电压技术, 2009, 35(7): 1629-1634.

CHANG Wen-zhi, TANG Zhi-guo, LI Cheng-rong, et al. Simulation analysis of PD UHF signal propagation in transformers [J]. High Voltage Engineering, 2009, 35(7): 1629-1634.

MUR G. Absorbing boundary conditions for the finite-difference approximation of the time-domain electromagnetic-field equations [J]. IEEE Transactions on Electromagnetic Compatibility, 1981(4): 377-382.

谢处方, 饶克谨. 电磁场与电磁波 [M]. 北京: 高等教育出版社, 2006: 34-83.

王颂, 李香龙, 李军浩, 等. 变压器局部放电超高频信号外传播特性的试验研究 [J]. 高压电器, 2007, 43(2): 100-105.

WANG Song, LI Xiang-long, LI Jun-hao, et al. Experimental study for outside propagation characteristic of the UHF signal emitted by partial discharge in transformers [J]. High Voltage Apparatus, 2007, 43(2): 100-105.

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

变压器现场超高频局部放电信号的时域特征分析

面向变压器叠片铁心涡流损耗评估的快速高精度多尺度计算方法

基于励磁电感参数识别的变压器励磁涌流判别方法

直流下油中局部放电脉冲波形测量与特性分析

电力变压器局部放电特高频信号外部传播特性研究