[1]李宏达,黄鼎琨,张 彬,等.改进的低压脉冲法对变压器绕组变形的探测研究[J].南京理工大学学报(自然科学版),2020,44(01):15-20.[doi:10.14177/j.cnki.32-1397n.2020.44.01.003]
 Li Hongda,Huang Dingkun,Zhang Bin,et al.Research in detection of winding transformer variationbased on improved LVI method[J].Journal of Nanjing University of Science and Technology,2020,44(01):15-20.[doi:10.14177/j.cnki.32-1397n.2020.44.01.003]
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改进的低压脉冲法对变压器绕组变形的探测研究()
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
44卷
期数:
2020年01期
页码:
15-20
栏目:
出版日期:
2020-01-30

文章信息/Info

Title:
Research in detection of winding transformer variationbased on improved LVI method
文章编号:
1005-9830(2020)01-0015-06
作者:
李宏达黄鼎琨张 彬陈乃川
沈阳理工大学 装备工程学院,辽宁 沈阳 110159
Author(s):
Li HongdaHuang DingkunZhang BinChen Naichuan
School of Equipment Engineering,Shenyang Ligong University,Shenyang 110159,China
关键词:
纳秒脉冲 低压脉冲法 绕组变形 电力变压器 频谱分析
Keywords:
nanosecond pulse low voltage pulse method winding deformation power transformers spectrumanalysis
分类号:
TM417
DOI:
10.14177/j.cnki.32-1397n.2020.44.01.003
摘要:
为了保证大规模电力输送工作的质量和效率,提高电力输送设备的使用寿命,通过对电网内核心装置电力变压器的内部绕组进行了变形探测研究。根据以往常用的低压脉冲法与频响法的优缺点,提出了一种基于低压脉冲法的改进方法。利用纳秒级脉冲进行测量来诊断电力变压器内部绕组的状态,即采用持续时间为100~2 000 ns和上升沿大约10 ns的纳秒级脉冲发生器进行测量。通过在不同端子上进行对比测量,并根据不同端子间回波信号的差异来判断变压器内部绕组是否发生了形变。此种方法确保了良好的重复性和测量精度并改进了传统的低压脉冲法(Low voltage impulse,LVI)的缺陷。实验结果证明,开发的纳秒级脉冲源与针对变压器绕组变型的数值谱分析法,可以快速地得到变压器内部绕组的变型情况并且扩展了回波信号的频谱。
Abstract:
In order to ensure the quality and efficiency of large-scale power transmission,improve the service life of power transmission equipment,the deformation detection of the inner windings of power transformers is studied. According to the advantages and disadvantages of the low voltage pulse method and frequency response method,an improved method based on low voltage pulse method is proposed. Nanosecond pulse is used to diagnose the internal winding state of power transformers,that is,a nanosecond pulse generator with a duration of 100~2 000 ns and a rising edge of about 10 ns is used for measurement. Through the comparison measurement on different terminals,and according to the difference of echo signal between different terminals,the winding inside the transformer is judged whether there is deformation or not. This method ensures good repeatability and measurement accuracy and improves the shortcomings of the traditional low voltage impulse(LVI)method. Experimental results show that the developed nanosecond pulse source and the numerical spectrum analysis method for transformer winding variation can quickly obtain the transformer internal winding variation and expand the spectrum of echo signal.

参考文献/References:

[1] 孙翔. 电力变压器绕组变形检测与诊断技术的现状与发展[J]. 高电压技术,2016,42(4):1207-1220.
Sun Xiang. Status quo and development of power transformer winding deformation detection and diagnosis technology[J]. High Voltage Technology,2016,42(4):1207-1220.
[2]王钰. 变压器绕组变形检测的LVI法和FRA法的比较研究[J]. 高电压技术,1997,23(1):13-18.
Wang Yu. Comparative study of LVI method and FRA method for transformer winding deformation detection[J]. High Voltage Technology,1997,23(1):13-18.
[3]张海军. FRA法检测电力变压器绕组变形的试验研究[J]. 高压电器,2017,53(12):157-162.
Zhang Haijun. FRA method for detecting winding deformation of power transformers[J]. High Voltage Electrical Appliances,2017,53(12):157-162.
[4]Gockenbach E. 特高压设备高压测试面临的挑战[J]. 高电压技术,2011,37(11):2617-2622.Gockenbach E. Challenges for high voltage testing of UHV equipment[J]. High Voltage Technology,2011,37(11):2617-2622.
[5]吕妍. 电力变压器绕组变形常用检测方法[J]. 山东电力技术,2013,195(5):46-52.
Lu Yan. Common detection methods for winding deformation of power transformers[J]. Shandong Electric Power Technology,2013,195(5):46-52.
[6]但果. 微机控高精度高压脉冲电源的研制[J]. 南京理工大学学报,2004,28(2):164-168.
Dan Guo. Development of high-precision pulse power supply controlled by microcomputer[J]. Journal of Nanjing University of Science and Technology,2004,28(2)164-168.
[7]李大立. 分体式超声检测装置在电力变压器绕组变形中的应用[J]. 变压器,2019,56(12):64-67.
Li Dali. Application of split ultrasonic detection device in winding deformation of power transformers[J]. Transformer,2019,56(12):64-67.
[8]吴振宇,周利军,周祥宇,等. 基于振荡波的变压器绕组故障诊断方法研究[J]. 中国电机工程学报,2020,40(1):348-357,401.
Wu Zhenyu,Zhou Lijun,Zhou Xiangyu,et al. Study on fault diagnosis method of transformer winding based on oscillation wave[J]. Chinese Journal of Electrical Engineering,2020,40(1):348-357,401.

备注/Memo

备注/Memo:
收稿日期:2018-09-30 修回日期:2019-11-20
基金项目:国家自然科学基金(51974063); 广州供电局项目(GZGD20180303240048)
作者简介:李宏达(1977-),男,副教授,主要研究方向:脉冲功率技术、高电压技术,E-mail:syitlhd@mail.ru; 通讯作者:黄鼎琨(1994-),男,硕士生,主要研究方向:信息对抗技术、脉冲功率技术,E-mail:hdkpersonal@163.com。
引文格式:李宏达,黄鼎琨,张彬,等. 改进的低压脉冲法对变压器绕组变形的探测研究[J]. 南京理工大学学报,2020,44(1):15-20.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2020-02-29