[1]汪佛池,张鹏,臧谦,等.基于有限差分法的变压器局部放电高频信号的传播特性研究[J].高压电器,2019,55(04):72-81.[doi:10.13296/j.1001-1609.hva.2019.04.011]
 WANG Fochi,ZHANG Peng,ZANG Qian,et al.Research of Propagation Characteristics of High?frequency Partial Discharge in Transformer Based on FDTD[J].High Voltage Apparatus,2019,55(04):72-81.[doi:10.13296/j.1001-1609.hva.2019.04.011]
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基于有限差分法的变压器局部放电高频信号的传播特性研究()
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《高压电器》[ISSN:1001-1609/CN:61-11271/TM]

卷:
第55卷
期数:
2019年04期
页码:
72-81
栏目:
研究与分析
出版日期:
2019-04-15

文章信息/Info

Title:
Research of Propagation Characteristics of High?frequency Partial Discharge in Transformer Based on FDTD
文章编号:
0072-0081
作者:
汪佛池1 张鹏12 臧谦2 刘宏亮2 高树国2 陈志勇2
1. 华北电力大学,河北保定071003;2. 国网河北省电力有限公司电力科学研究院,石家庄050000
Author(s):
WANG Fochi1ZHANG Peng12ZANG Qian2LIU Hongliang2GAO Shuguo2CHEN Zhiyong2
1. North China Electric Power University,Hebei Baoding 071003,China;2. Electric Power Research Institute of State Grid Hebei Electric Power Company,Shijiazhuang 050000,China)
关键词:
变压器高频局部放电传播特性有限差分法(FDTD)
Keywords:
transformerhigh?frequency(HF)partial discharge(PD)propagation characteristicsfinite differ? ence time domain(FDTD)
DOI:
10.13296/j.1001-1609.hva.2019.04.011
摘要:
基于高频的局部放电检测技术有着具有检测灵敏,结构简单,技术成熟的特点。但目前对这项技术的研 究还停留在实际应用上,而对其在变压器中传播理论研究并不多。为此文中基于有限差分法(FDTD),在对一个 35 kV变压器建模基础上,对比研究了放电源脉冲宽度,幅值,接收源距离以及铁心对高频局部放电信号的影响, 并设计一气隙型局部放电,在真型变压器上完成了高频局部放电检测试,验证完整了仿真结论。仿真与试验结 论表明高频局部放电信号在传播特性上,受到多种因素的影响,与特高频信号有明显区别。研究结果有助于对 局部放电的理解,也对高频局部放电的测量定位在理论上提供了依据,从而在工程中起到指导作用。
Abstract:
High?frequency(HF)partial discharge(PD)detection technique has high sensitivity,simple structure, mature technology and so on. It researches mainly on the practical application,but there is little research on trans? former signal propagation theory. In this paper,basing on finite difference time domain(FDTD)method,a comput? er model of a 35 kV transformer is built up,and the impact of the pulse width,amplitude,distance of the source and the transformer core on HF PD is compared. Moreover,a HF PD test is performed on a real transformer to veri? fy the integrity of the simulation results. Simulation and experimental results show that the propagation characteris? tics of HF PD signals subjects to a variety of factors,and it is significantly different from UHF signals. The research is helpful to the understanding of PD,and also provides a theoretical basis for the measurement and location of HF PD,which could play a guiding role in the practical application.

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备注/Memo

备注/Memo:
收稿日期:2018?09?09; 修回日期:2018?10?31; 汪佛池(1980—),男,博士,副教授,研究方向为高电压绝 缘技术。 张鹏(1993—),男,硕士,研究方向为变压器故障诊断。
更新日期/Last Update: 2019-04-16