基于太赫兹时域光谱技术的变压器油中金属杂质的检测研究

Research on Detection of Metal Impurities in Transformer Oil Based on Terahertz Time-domain Spectroscopy

利用太赫兹时域光谱技术对纯净的变压器油和不同含铜量的变压器油进行了实验测量,获得了纯净的变压器油和不同含铜量的变压器油的时域、频域、吸收光谱和折射率。实验结果表明,在变压器油中添加铜粉末后,材料的时域、频域、吸收系数和折射率都有明显变化,通过太赫兹技术可以快速准确地检测出变压器油中是否存在金属异物,进而保障电网的安全运行。

Experimental measurement of pure transformer oil and transformer oil with different copper content is carried out with terahertz time-domain spectroscopy technology,and the time-domain,frequency domain,absorption spectrum and refractive index of pure transformer oil and transformer oil with different copper content are obtained.The experimental results show that the timedomain,frequency domain,absorption coefficient and refractive index of the material have obvious changes after copper powder is added to the transformer oil.The terahertz technology can help to quickly and accurately detect whether there are metal impurities in the transformer oil,so as to ensure the safe operation of the power grid.