{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,15]],"date-time":"2026-04-15T19:23:25Z","timestamp":1776281005370,"version":"3.50.1"},"reference-count":22,"publisher":"MDPI AG","issue":"11","license":[{"start":{"date-parts":[[2017,11,15]],"date-time":"2017-11-15T00:00:00Z","timestamp":1510704000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>Sulfur hexafluoride (SF6) gas-insulated electrical equipment is widely used in high-voltage (HV) and extra-high-voltage (EHV) power systems. Partial discharge (PD) and local heating can occur in the electrical equipment because of insulation faults, which results in SF6 decomposition and ultimately generates several types of decomposition products. These SF6 decomposition products can be qualitatively and quantitatively detected with relevant detection methods, and such detection contributes to diagnosing the internal faults and evaluating the security risks of the equipment. At present, multiple detection methods exist for analyzing the SF6 decomposition products, and electrochemical sensing (ES) and infrared (IR) spectroscopy are well suited for application in online detection. In this study, the combination of ES with IR spectroscopy is used to detect SF6 gas decomposition. First, the characteristics of these two detection methods are studied, and the data analysis matrix is established. Then, a qualitative and quantitative analysis ES-IR model is established by adopting a two-step approach. A SF6 decomposition detector is designed and manufactured by combining an electrochemical sensor and IR spectroscopy technology. The detector is used to detect SF6 gas decomposition and is verified to reliably and accurately detect the gas components and concentrations.<\/jats:p>","DOI":"10.3390\/s17112627","type":"journal-article","created":{"date-parts":[[2017,11,15]],"date-time":"2017-11-15T11:13:35Z","timestamp":1510744415000},"page":"2627","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":47,"title":["Electrochemical and Infrared Absorption Spectroscopy Detection of SF6 Decomposition Products"],"prefix":"10.3390","volume":"17","author":[{"given":"Ming","family":"Dong","sequence":"first","affiliation":[{"name":"State Key Laboratory of Electrical Insulation for Power Equipment, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9745-6933","authenticated-orcid":false,"given":"Chongxing","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Electrical Insulation for Power Equipment, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}]},{"given":"Ming","family":"Ren","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Electrical Insulation for Power Equipment, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1586-5931","authenticated-orcid":false,"given":"Ricardo","family":"Albarrac\u00edn","sequence":"additional","affiliation":[{"name":"Departamento de Ingenier\u00eda El\u00e9ctrica, Electr\u00f3nica, Autom\u00e1tica y F\u00edsica Aplicada, Escuela T\u00e9cnica Superior de Ingenier\u00eda y Dise\u00f1o Industrial (ETSIDI), Universidad Polit\u00e9cnica de Madrid (UPM), Ronda de Valencia 3, Madrid 28012, Spain"}]},{"given":"Rixin","family":"Ye","sequence":"additional","affiliation":[{"name":"Maintenance Company of State Grid Shaanxi Electric Power Company, Xi\u2019an 710065, China"}]}],"member":"1968","published-online":{"date-parts":[[2017,11,15]]},"reference":[{"key":"ref_1","first-page":"639","article-title":"Field Test and Analysis of Partial Discharge on GIS under Impulse Voltage","volume":"38","author":"Sun","year":"2012","journal-title":"High Volt. 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