Determination of H<sub>2</sub>S in SF<sub>6</sub> Decomposition Products by Ultraviolet Absorption Spectrometry

YANG Yuling; GUO Xinliang; CUI Zhaolun; XIA Huanhuan; YANG Xueying; ZHANG Xiaoxing

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Determination of H₂S in SF₆ Decomposition Products by Ultraviolet Absorption Spectrometry

更新时间：2025-12-08

- Determination of H₂S in SF₆ Decomposition Products by Ultraviolet Absorption Spectrometry
- Vol. 44, Issue 8, Pages: 2573-2579(2018)
- 作者机构：
  
  1. 云南电网有限责任公司电力科学研究院
  2. 武汉大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 August 2018，
  
  Published：2018
- 稿件说明：
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YANG Yuling, GUO Xinliang, CUI Zhaolun, et al. Determination of H₂S in SF₆ Decomposition Products by Ultraviolet Absorption Spectrometry[J]. 2018, 44(8): 2573-2579.
DOI：

YANG Yuling, GUO Xinliang, CUI Zhaolun, et al. Determination of H₂S in SF₆ Decomposition Products by Ultraviolet Absorption Spectrometry[J]. 2018, 44(8): 2573-2579. DOI：

摘要

S作为SF

的一种重要分解组分

其体积分数的检测可以为SF

电气绝缘设备的绝缘状态评估提供重要依据。H

S在波长为190

30 nm的紫外波段具有明显的吸收峰

为此

建立了H

S紫外吸收光谱检测平台以实现对它的检测。但是

通过仪器直接获得的紫外吸收光谱易受到光谱散射和高频噪声干扰

从而造成检测灵敏度降低。因此

采用紫外差分算法和小波函数对原始吸收光谱进行体积分数反演

以获得光谱数据与气体体积分数之间的关系。研究结果表明:经光谱数据提取获得的频域信息与体积分数之间有很好的线性关系

其线性拟合优度（R2）高达0.999 9

体积分数检出限为0.590×10

-6

将获得的反演表达式用于实际数据检测同样获得了很好的检测效果。该方法对H

S的检测重复性好

灵敏度高

可以集成到便携式的检测设备中

适用于SF

绝缘设备分解组分中痕量H

S的在线监测

Abstract

Determination of H

S in SF

decomposition products plays an important role in assessment of the insulation state in SF

insulated electrical equipment. H

S can be detected by ultraviolet absorption spectrometry for its absorption in the band of 190

30 nm. We set up an ultraviolet detection platform for the determination of H

S. However

the sensitivity of H

S detection was low because the absorption spectra were easy to be interfered by spectral scatting and high-frequency noise. Therefore

ultraviolet difference algorithm and wavelet function were used for volu

me fraction inversion to obtain the relationship between spectral data and gas volume fraction. The research results show that there is a good linear relationship between the frequency domain information obtained by spectral data extraction and the concentration

the method shows good linearity（R2=0.999 9） and the volume fraction limit of the detection is 0.590×10

-6

. The obtained inversion expression was used for the actual data detection

and a good detection effect was obtained. The method is of good detection repeatability and high sensitivity

and it can be integrated into portable testing equipment

which is suitable for on-line detection of trace H

S in SF

insulated electrical equipment.

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Related Institution

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AI问答

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Determination of H2S in SF6 Decomposition Products by Ultraviolet Absorption Spectrometry

DOI：

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Determination of H₂S in SF₆ Decomposition Products by Ultraviolet Absorption Spectrometry