高压脉冲造成储能电容器老化的直流局部放电测试技术

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摘要高压储能电容器是脉冲功率系统的关键器件之一, 应具有高的可靠性, 但个别电容器在工作期间会发生过早击穿, 给系统带来极大的隐患。如能准确评估其绝缘状态, 对整个系统的工作稳定性有很大的提高。本文提出直流局部放电是检测试样绝缘老化的适宜方法, 并研究了老化后的电容器绝缘在直流局部放电试验中的测试电压、测试方向和测试时间；按照上述标准划分了过渡区、平稳区, 按照一定测量方向和顺序, 得到了有效的直流局部放电数据；最后对击穿后的试样解剖并分析, 认为直流局部放电参量变化可有效反映其绝缘状态。

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	吴广宁
	李晓华
	冉汉政
	姚永和
	张血琴
	于成龙
	边姗姗
	彭倩

关键词 ：储能电容器, 绝缘, 老化, 直流, 局部放电

Abstract：High voltage storage capacitors, which are key components in pulsed power system, are expected of high reliability. However, some of capacitors broke down in the early aging under service condition unexpectedly. If the insulation degradation of capacitors is well diagnosed, great advantages are taken in the reliability of the pulse power system. In this paper, it is realized that partial discharge (PD) detection under direct current (DC) voltage is the proper method to analyzing insulation degradation in capacitors after the service condition. To obtain effective data, the PD under DC voltage should be measured under certain detection voltage, direction, order and time. After capacitors breaking down, samples are dissected. It is found that the characteristic of partial discharge parameter can reflect the condition of dielectric insulation in storage capacitors.

Key words： Storage capacitor insulation aging direct current (DC) partial discharge (PD)

收稿日期: 2009-09-21 出版日期: 2014-03-04

PACS:

TM835.1

基金资助:国家自然科学基金资助项目(10476022)

作者简介: 吴广宁男, 1969年生, 教授, 博士生导师, 从事高电压与绝缘技术和电气设备状态监测与故障诊断方面的教学与科研工作。李晓华男, 1983?年生, 硕士, 从事电气设备状态监测与故障诊断方面的研究。

引用本文:

吴广宁, 李晓华, 冉汉政, 姚永和, 张血琴, 于成龙, 边姗姗, 彭倩. 高压脉冲造成储能电容器老化的直流局部放电测试技术[J]. 电工技术学报, 2010, 25(7): 172-178. Wu Guangning, Li Xiaohua, Ran Hanzheng, Yao Yonghe, Zhang Xueqin, Yu Chenglong, Bian Shanshan, Peng Qian. Partial Discharge Under DC Condition With Pulse Discharge Degradation of High Voltage Storage Capacitors. Transactions of China Electrotechnical Society, 2010, 25(7): 172-178.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2010/V25/I7/172

[1] Macdougall F W, Ennis J B, Cooper R A, et al. High energy density pulsed power capacitors[C]. 14th IEEE International on Pulsed Power Conference, PPC-2003, 2003: 513-517.
[2] Wisken H G, Podeyn F, Weise H G. High energy density capacitors for etc gun applications[J]. IEEE Transactions on Magnetics, 2001, 37(1): 332-335.
[3] Slenes K M, Winsor P, Scholz T, et al. Pulse power capability of high energy density capacitors based on a new dielectric material[J]. IEEE Transactions on Magnetics, 2001, 37(1): 324-327.
[4] Ennis J, Huiyang Xiao, Macdougall F, et al. High energy density capacitor characterization[C]. Power Modulator Symposium 2004 and High-Voltage Workshop, Conference Record of the Twenty-Sixth International, 2004: 68-71.
[5] Stone G C. Partial discharge diagnostics and electrical equipment insulation condition assessment[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2005, 12(5): 891-904.
[6] Bartnikas R. Partial discharges: their mechanism, detection and measurement[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2002, 9(5): 763- 808.
[7] 郭俊, 吴广宁, 张血琴, 等. 局部放电检测技术的现状和发展[J]. 电工技术学报, 2005, 20(02): 29-35.
[8] Zhang Xueqin, Wu Guangning. Quality evaluation of high voltage storage capacitor through DC partial discharge measurement[C]. Proceedings of the 2004 IEEE International Conference on Solid Dielectrics, 2004: 755-758.
[9] Hoogenraad G, Morshuis P, Petrarca C. Classification of partial discharges for DC equipment [C]. IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Millbrae, America, 1996: 110-112.
[10] Peter Morshuis, Gerard Hoogenraad. Partial discharge diagnositics for DC equipment[C]. Conference Record of the 1996 IEEE International Symposium on Electrical Insulation, Montreal, Quebec, Canada, 1996: 407-410.
[11] Peter Morshuis, Marc Jeroense, Jens Beyer. Partial discharge part XXIV: the analysis of PD in HVDC equipment[J]. IEEE Electrical Insulation Magazine, 1997, 13(2): 6-16.
[12] Peter Morshuis, Jens Beyer. Quality assessment of HVDC components by PD analysis[C]. 1997 IEEE Annual Report Conference on Electrical Insulation and Dielectric Phenomena, Cancun, Quintana Roo, Mexico, 2002: 736-739.
[13] Hoogenraad G, Beyer J. Digital HVDC partial dis- charge testing[C]. Conference Record of the 2000 IEEE International Symposium on Electrical Insula- tion, Anaheim, California, America, 2000: 448-451.
[14] 于钦学, 邱昌容, 谢恒堃. 油纸绝缘直流局部放电的研究[J]. 变压器, 1998(2): 17-20.
[15] Erling Ildstad, Terje Haave. Conduction and partial discharge activity in HVDC cable insulation of lapped polypropylene films[C]. Proceedings of the 7th IEEE International Conference on Solid Dielectrics, Eindhoven, Dutch, 2001: 137-140.
[16] Qu Yanning, Wu Guangning, Zhang Xueqin, et al. Detecting instrument for dc partial discharge within storage capacitor[C]. Conference Record of the 2006 IEEE International Symposium on Electrical Insulation, 2006: 328-331.
[17] 张血琴, 吴广宁, 曲衍宁, 等. 高压储能电容器直流局部放电检测仪的研制[J]. 西南交通大学学报, 2006, 41(6): 743-747.
[18] Lesaint Q, Tobazeon R. Study of the generation by sharp electrodes of a gaseous phase in dielectric liquids subjected to high AC or step voltages[J]. IEEE Transactions on Electrical Insulation, 1985, 20(2): 269-273.