工频交流电晕放电下SF<sub>6</sub>气体分解物形成的影响因素

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摘要六氟化硫（SF₆）作为一种理想的绝缘和灭弧气体广泛应用于气体绝缘电力设备。以往的研究和运行经验表明SF₆气体分解物与电力设备的绝缘状态有密切的关联。因此,分析SF₆气体分解物是监测气体绝缘电力设备绝缘状态的有效手段之一。本文用针-板电极模型模拟SF₆气体中的工频交流电晕放电,以色谱-质谱法作为检测手段,研究不同影响因素下工频交流电晕放电中SF₆气体分解组分的形成规律,如持续施加电压、放电时间、气体压力、电极间距等,分析影响因素对SF₆气体分解物形成的作用规律。

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	林涛
	韩冬
	钟海峰
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	张国强

关键词 ：六氟化硫, 电晕放电, SF6气体分解物, 色谱-质谱法

Abstract：As an excellent insulating medium, sulfur hexafluoride (SF₆) is widely used in gas- insulated apparatus. Previous studies and actual operation experiences have shown that the insulation condition of gas-insulated apparatus can be assessed via decomposition by-products of SF₆. Therefore, the analysis on gaseous by-products is one of the most effective ways in monitoring the insulation condition of gas-insulated apparatus. In this paper, by virtue of the gas chromatograph-mass spectrometer system, the qualitative as well as quantitative results of SF₆ decomposition by-products are presented in 50Hz AC point-plane corona discharge. Meanwhile, the influence factors on the formation of decomposition by-products are discussed, such as applied voltage, duration of discharge, gas pressure and distance between point and plane as so on.

Key words： SF6 corona discharge decomposition by-products of SF6 gas chromatography-mass spectrometry

收稿日期: 2012-12-10 出版日期: 2014-06-18

PACS:

TM835

基金资助:国家自然科学基金（51007086）和中国科学院电工研究所科研基金资助项目

作者简介: 林涛男,1985年生,博士研究生,研究方向为电力设备状态监测与故障诊断。韩冬女,1975年生,博士,研究方向为电力设备状态监测与故障诊断,不确定性分析。

引用本文:

林涛, 韩冬, 钟海峰, 靳骁, 张国强. 工频交流电晕放电下SF₆气体分解物形成的影响因素[J]. 电工技术学报, 2014, 29(2): 219-225. Lin Tao, Han Dong, Zhong Haifeng, Jin Xiao, Zhang Guoqiang. Influence Factors of Formation of Decomposition By-Products of SF₆ in 50Hz AC Corona Discharge. Transactions of China Electrotechnical Society, 2014, 29(2): 219-225.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2014/V29/I2/219

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