CSNS/RCS引出脉冲电源传输电缆终端绝缘技术 |
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引用本文: | 翟军,沈莉,李海波,周国仲. CSNS/RCS引出脉冲电源传输电缆终端绝缘技术[J]. 强激光与粒子束, 2017, 29(7): 075104. DOI: 10.11884/HPLPB201729.160489 |
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作者姓名: | 翟军 沈莉 李海波 周国仲 |
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作者单位: | 1.中国科学院 高能物理研究所, 北京 1 00049; |
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摘 要: | 对脉冲电源系统72 h老练实验过程中高压电缆座打火并被击穿情况进行分析,建立高压电缆终端电场分布等效电路,推导出从电缆终端到金属屏蔽层的电势差公式,从理论上分析高压座被击穿的原因是电缆终端绝缘层未做倒角,空间电荷在此处集聚、温度升高导致的。通过定位被击穿高压座击穿孔的位置验证理论分析的正确性,最后提出高压电缆端部绝缘层处理方法,并做72 h老练实验验证了其正确性。
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关 键 词: | 脉冲电源 高压电缆座 电场分布等效电路 电缆终端绝缘层 老练实验 |
收稿时间: | 2016-10-12 |
Insulation technology of transmission cable terminal for CSNS/RCS extraction pulsed power supply system |
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Affiliation: | 1.Institute of High Energy Physics,China Academy of Sciences,Beijing 100049,China;2.Dongguan Neutron Science Center,Dongguan 523803,China |
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Abstract: | By observing and analyzing the sparking and breaking down of the high-voltage cable socket of the pulsed power supply during the 72 hours conditioning experiment, the electrical field distribution equivalent circuit of the terminal of the high-voltage cable was built, the formula of the potential difference from the cable-terminal to the metal shielding layer was conducted. The reason of breakdown is analyzed theoretically in this paper. It is suggested that the un-chamfered insulation of the cable-terminal causes space charge focusing, which then results in a temperature increase leading to the high-voltage cable socket breakdown. The theoretical analysis is proved by the position of the breakdown hole of the high-voltage cable socket. The handling method of insulation of the cable terminal is presented, which was validated by continuous conditioning experiment for 72 hours. |
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