环保绝缘介质C<sub>5</sub>F<sub>10</sub>O混合气体体积分数比定量检测

doi:10.19595/j.cnki.1000-6753.tces.201160

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Abstract C₅F₁₀O gas mixture shows a great application prospect as SF₆ alternative gas in medium-voltage (MV) electrical equipment. The concentration of C₅F₁₀O plays an important role in the dielectric characteristics of its gas mixtures. However, most of C₅F₁₀O gas mixtures in existing studies are prepared by Dalton's law, and the gas concentration error cannot be determined accurately. This paper proposed a rapid and accurate method for quantitatively detecting the concentration of C₅F₁₀O in gas mixtures based on the ultraviolet differential spectroscopy. It is found that C₅F₁₀O gas has an ultraviolet absorption peak in the 237~350nm band (with the peak located at 299nm). The absorption peak detection of C₅F₁₀O shows that the linear determination coefficient of the standard gas concentration inversion curve reaches 0.999 98, the absolute detection error is less than 0.05%, and the theoretical detection limit is 200ppm. This paper can provide guidance for the preparation of C₅F₁₀O gas mixture with accurate concentration and monitoring the concentration change of C₅F₁₀O gas mixture in real time in engineering applications, and provide reference for operation and maintenance personnel to formulate operation and maintenance plans.

Key words： C₅F₁₀O gas mixture ultraviolet (UV) absorption spectrometry Dalton's law quantitative detection SF₆ alternative gas

Received: 06 September 2020

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TM213

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	Li Yalong
	Zhang Xiaoxing
	Wei Zhuo
	Wang Yi
	Li Yi
	Xiao Song

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Li Yalong,Zhang Xiaoxing,Wei Zhuo等. Quantitative Detection on the Concentration of Eco-Friendly Insulating Medium C₅F₁₀O Gas Mixture Concentration[J]. Transactions of China Electrotechnical Society, 2022, 37(8): 2117-2125.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201160 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I8/2117

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