Raman spectroscopy based detection of corrosive sulfur in transformer oil:Method and application
作者机构：State Key Laboratory of Power Transmission Equipment&System Security and New TechnologyChongqing UniversityChongqingChina
出 版 物：《High Voltage》 (高电压（英文）)
年 卷 期：2022年第7卷第6期
页 面：1175-1184页
核心收录：
学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学]
基 金：National Natural Science Foundation of China,Grant/Award Number:51977017 Fundamental Research Funds for the Central Universities,Grant/Award Number:2022CDJKYJH027
主 题：corrosion sulfur spectroscopy
摘 要：In order to overcome the shortcomings of traditional methods for corrosive sulfur detection in transformer oil,Raman spectroscopy based detection is proposed in this *** widely concerned corrosive sulfur,Dibenzyl Disulfide(DBDS),was chosen as the characteristic molecule to be detected.A series of oil samples with different DBDS concentrations was *** these samples were extracted by 1-methyl-2-pyrrolidinone for DBDS enrichment to improve the sensitivity of *** Raman spectra of samples were obtained,and a linear model was established by analysing the relationship between the characteristic peak and the DBDS *** limit of detection reached 7.98 mg/*** determining the DBDS concentrations causing sulfur corrosion,the sulfur weight content on the copper conductor surface was measured by Scanning Electron Microscope-Energy Dispersive Spectrometer after a corrosion *** results show that the corrosion limitation highly depends on the type of transformer oil,and the Raman spectroscopy detection can meet the limit of detection requirement in practical ***,an on-site oil sample and five Lab-made samples were detected via our new method and the current Gas Chromatography-Mass Spectrometry based *** is found that there is no significant divergence between the measurement *** good applicability was also demonstrated in onsite sample test.
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