SF<sub>6</sub>放电的发射光谱特性分析与放电识别

doi:10.19595/j.cnki.1000-6753.tces.210307

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Abstract This paper simulated three common discharge defects of sulfur hexafluoride (SF₆) gas insulated electrical equipment (corona discharge, spark discharge, and creeping discharge), and a spectrometer was used to detect the emission spectrum in the range of 200~1 037nm. The results show that, the emission spectrum of the corona discharge is mainly composed of band spectrum （OH radical band, SF₆ and SF_x molecular band） and weak line spectrum of fluoride atom; On the basis of corona discharge, the emission spectrum of the spark discharge has newly added linear spectra of sulfur atom, sulfur ion and fluoride ion; the outline of the emission spectrum under the creeping discharge is similar to the spark discharge. However, due to the introduction of copper in the creeping discharge, the linear spectra of copper atom appear in the emission spectrum. Finally, according to the difference in the spectral characteristics of the corona discharge, spark discharge and creeping discharge, this paper defines two characteristic physical quantities: I_ratio and|I′_nor(323.371nm)|, and designs the corresponding discharge recognition algorithm. The accuracy of the algorithm is 94.33%, which can effectively identify SF₆ discharge defects in the experiment.

Key words： Sulfur hexafluoride(SF₆) optical emission spectroscopy characteristic spectrum partial discharge discharge recognition

Received: 05 March 2021

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TM855

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	Li Yanfei
	Tang Beibei
	Han Dong
	Qiu Zongjia
	Zhang Guoqiang

Cite this article:

Li Yanfei,Tang Beibei,Han Dong等. Spectroscopy Analysis of Emission Spectrum Characteristics and Discharge Recognition of SF₆ Gas Discharge[J]. Transactions of China Electrotechnical Society, 2022, 37(7): 1866-1874.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.210307 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I7/1866

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