首页|基于光声光谱技术探测水汽影响CO气体相位偏差的研究

基于光声光谱技术探测水汽影响CO气体相位偏差的研究

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光声光谱装置在测量变压器油中溶解的CO气体时容易发生检测波形相位延迟现象,从而造成CO气体浓度探测不准确,进而影响变压器故障性质的判别.对CO气体的红外吸收峰进行了分析和筛选,搭建了一套测量CO气体的光声光谱平台,测量了不同水汽含量下CO气体的相位偏差.结果表明:在CO气体中增加适量水汽可提高CO气体检测精确度;当露点温度为14℃、水汽含量为1.574 4%时,CO气体检测精确度最高;在不能增加水汽的情况下,可通过公式计算相位偏差,调整CO气体波形,从而提高测量精确度.
Study on Phase Deviation of CO Affected by Water Vapor Based on Photoacoustic Spectroscopy
Photoacoustic spectroscopy device is prone to detect waveform phase delay when measuring CO gas dissolved in transformer oil,which will cause inaccurate detection of CO gas concentration,and then affect the identification of transformer fault properties.The infrared absorption peak of CO gas is analyzed and screened;a photoacoustic spectroscopy platform for measuring CO gas is set up,and the phase deviation of photoacoustic spectroscopy detection of CO gas under different water vapor content is measured experimentally.The results show that adding a proper amount of water vapor in CO gas can improve the accuracy of CO gas detection.When the dew point temperature is 14℃and the water vapor content is 1.574 4%,the accuracy of CO gas detection is the highest.If the water vapor can not be added,the deviation phase can be calculated by formula,and the actual detected CO gas waveform can be adjusted to improve the accuracy of measurement.

photoacoustic spectrumpartial dischargeCO gaswater vaporphase deviation

陈轩宇、沈恩泽、张磊、张周胜

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上海电力大学 电气工程学院,上海 200090

国网上海市电力公司青浦供电公司,上海 201700

光声光谱 局部放电 CO气体 水汽 相位偏差

上海市科学技术委员会项目

20020500800

2024

上海电力大学学报
上海电力学院

上海电力大学学报

影响因子:0.401
ISSN:2096-8299
年,卷(期):2024.40(4)