摘要
通过对SF_(6)的分解物SO_(2)、H_(2)S和CO混合气体进行定性定量分析,可以有效地推断出电气设备内部缺陷。基于此,文章进行了相关研究,设计了一种基于紫外差分吸收光谱以及微流红外技术的复合光学测量解决方案。对于SO_(2)和H_(2)S气体,通过紫外差分吸收光谱法(UV-DOAS)进行分析,优化选择两种气体的最适吸收波长,并以此通过吸光度的扣减与反演,解决在紫外吸收光谱区域H_(2)S和SO_(2)的交叉干扰问题。对其测试的原始谱图进行数字滤波处理,去噪后获得平滑波形并线性拟合,SO_(2)和H_(2)S的拟合度分别达到0.9999和0.9971,提高了SF_(6)分解气中SO_(2)和H_(2)S气体的混合灵敏度。对于CO气体,通过微流红外探测器对不同标准浓度的CO进行测量通道和参考通道的测量,并进一步线性拟合,拟合度为1。该方案可以实现SF_(6)分解气的准确快速检测,为电气设备的内部缺陷判断奠定基础。
Through the qualitative and quantitative analysis of the decomposition gas of SO_(2),H_(2)S and CO mixture of SF_(6),the internal defects of electrical equipment can be effectively inferred.Based on this work,this paper designs a composite optical measurement solution based on ultraviolet differential absorption spectroscopy and microcurrent infrared technology.For SO_(2)and H_(2)S gases,the ultraviolet differential absorption spectroscopy(UV-DOAS)is analyzed to optimize the optimal absorption wavelengths of the two gases,and remove the cross interference of H_(2)S and SO_(2)in the UV absorption spectrum through the deduction and deduction of absorbance and inversion.The raw spectrum map tested was digitally filtered,and the smooth waveform and linear fit were obtained.The fit of SO_(2)and H_(2)S reached 0.9999 and 0.9971,respectively,which improved the mixing sensitivity of SO_(2)and H_(2)S gas in SF_(6)decomposition gas.For the CO gas,the measurement and reference channels were measured at different standard concentrations of CO by a microcurrent infrared detector with a further linear fit with a fit of 1.This scheme can realize the accurate and rapid detection of SF_(6)decomposition gas,and lay a foundation for the internal defect judgment of electrical equipment.
作者
董晓虎
程绳
艾珺迪
林磊
Dong Xiao-hu;Cheng Sheng;Ai Jun-di;Lin Lei
出处
《电力系统装备》
2023年第1期23-26,共4页
Electric Power System Equipment
关键词
紫外差分吸收光谱
微流红外探测器
SF
6分解气
交叉干扰
UV differential absorption spectrum
microcurrent infrared detector
SF^(6)decomposition gas
cross interference
