| 交直流复合电压下油纸绝缘气隙局部放电与产气特性分析(英文) |
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| 引用本文： | 何志满,李剑,鲍连伟,江天炎,王有元. 交直流复合电压下油纸绝缘气隙局部放电与产气特性分析(英文)[J]. 高电压技术, 2012, 38(8): 2091-2096 |
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| 作者姓名： | 何志满 李剑 鲍连伟 江天炎 王有元 |
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| 作者单位： | State Key Laboratory of Power Equipment &System Security and New Technology,College of Electrical Engineering,Chongqing University |
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| 基金项目： | supported by National High-tech Research and Development Program of China(863 Program)，National Science Foundation of China，Scientific Innovation of Colleges and Universities |
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| 摘 要： | Oil-paper insulation is used within most of high voltage direct current(HVDC) converter transformers.Partial discharge(PD) in oil-paper insulation is a major reason for the development of internal faults in HVDC converter transformer,while PDs in oil-paper insulation mainly occur in terms of gas cavity discharges.There are few study results on the development characteristics of partial discharges in oil-paper insulation and dissolved gases in oils of HVDC converter transformers.Based on a gas cavity discharge model of oil-paper insulation,the present study investigates the development characteristics of partial discharges under AC-DC combined voltages and emphatically examines the variation characteristics of dissolved gases in the discharge development process.Experiment and analysis results show that the characteristics of partial discharges and dissolved gases in oils under AC-DC combined voltages are appreciably different with those under AC voltage.These results provide theoretical support for further research on partial discharges and on dissolved gases of other internal insulating defects and are helpful for the fault diagnosis of HVDC converter transformers.
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| 关 键 词： | HVDC converter transformer AC-DC combined voltages oil-paper insulation partial discharge dissolved gases |
Characteristic Analysis of Partial Discharges and Dissolved Gases Generated Cavityin Oil-paper Insulation Under AC-DC Combined Voltages |
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| HE Zhiman,LI Jian,BAO Lianwei,JIANG Tianyan,WANG Youyuan. Characteristic Analysis of Partial Discharges and Dissolved Gases Generated Cavityin Oil-paper Insulation Under AC-DC Combined Voltages[J]. High Voltage Engineering, 2012, 38(8): 2091-2096 |
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| Authors: | HE Zhiman LI Jian BAO Lianwei JIANG Tianyan WANG Youyuan |
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| Affiliation: | State Key Laboratory of Power Equipment＆System Security and New Technology,College of Electrical Engineering, Chongqing University, Chongqing 400030, China |
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| Abstract: | |
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| Keywords: | HVDC converter transformer AC-DC combined voltages oil-paper insulation partial discharge dissolved gases |
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