| SF6／N2混合气体绝缘介质的研究 |
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| 引用本文： | 邱毓昌,冯允平.SF6／N2混合气体绝缘介质的研究[J].西安交通大学学报,1993,27(1):1-6. |
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| 作者姓名： | 邱毓昌 冯允平 |
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| 作者单位： | 西安交通大学电气工程系
(邱毓昌，冯允平)，西安交通大学电气工程系(张鸣超) |
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| 摘 要： | 对有工业应用前景的SF_6/N_2混合气体绝缘介质进行了全面的研究.在均匀电场中SF_6/N_2的耐电强度可由Wieland近似式估算,电极表面粗糙度效应可由已知的SF_6/N_2优异值用多个突起的表面粗糙度模型算得.文中给出SF_6/N_2在陡波和雷电冲击波下伏秒特性及其放电生成物的分析结果.计算和实验还表明,即使在垂直敷设的情况下,SF_6/N_2的混合比随高差的变化也可以忽略不计.
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| 关 键 词： | 气体绝缘材料 氮 氟化硫 断路器 |
STUDY OF SF_6/N_2 GAS MIXTURE DIELECTRICS |
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| Qiu Yuchang Feng Yunping Zhang Mingchao.STUDY OF SF_6/N_2 GAS MIXTURE DIELECTRICS[J].Journal of Xi'an Jiaotong University,1993,27(1):1-6. |
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| Authors: | Qiu Yuchang Feng Yunping Zhang Mingchao |
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| Institution: | Department of Electrical Engineering |
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| Abstract: | The SF_6/N_2 gas mixture as a promising gaseous dielectric for industrial applications is thoroughly studied. The dielectric strength of the gas mixture in a uniform field can be evaluated by the Wieland approximatiom, and the electrode surface roughness effect can be calculated by using a multiridge model with the known figure of merit of the gas mixture. The V-t characteristics of the gas mixture under steep-fronted impulse and lightning impulse voltages are also presented. It is shown that the gas decomposition products in the mixture are quite similar to those in pure SF_6 gas,and the variation of the mixing ratio with elevation can be neglected. |
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| Keywords: | gas insulating materials SF_6 breaker discharge nitrogen |
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