A Novel Methanol-detection-method for the Aging Prediction of Paper Insulation in Power Transformer

Lei, Peng; Fu, Qiang; Lin, Musong; Qian, Yihua; Zhao, Yongxiang

doi:10.1109/ichve.2018.8642097

Cited by 1 publication

(1 citation statement)

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“…Methanol is a very promising characteristic product reflecting the aging states of transformer insulating paper [48,49]. At present, the research on the aging evaluation of transformer oil paper insulation based on methanol is in the initial stage [50,51], the mainstream methods for detecting methanol content include gas chromatography (GC-FID) [52], spectroscopy [53], gas mass spectrometry (GC-MS) [47,54], etc. Each method has certain advantages, but also has limitations.…”

Section: Introductionmentioning

confidence: 99%

A review on a novel method for aging evaluation of transformer insulating paper based on methanol

Chen

Sun

Cheng

et al. 2023

IET Generation Trans & Dist

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The insulation paper is a crucial factor for evaluating the insulation status of transformers. The traditional evaluation methods for insulation paper are dissolved gas component content analysis (CO and CO 2 ) and furfural (2-FAL) content analysis in oil. The detection principle of the former leads to its low accuracy, while the field application effect of the latter is not ideal due to the easy oxidation of furfural and low content. Methanol, result of its good stability and high production compared with other marker products (CO, CO 2 , 2-FAL) has been investigated as a novel marker for aging evaluation of transformer insulating paper in recent years. The results of the investigation indicated that there is a good correlation between the content of methanol in oil and the degree of polymerization under laboratory conditions, which reflected the insulation aging state of the transformer insulating paper more accurately. This paper summarizes the current research status of methanol formation mechanism, detection methods and aging evaluation in insulating oil, and points out the key problems to be solved and development prospects, hoping to provide relevant reference for aging evaluation of oil immersed power transformer.

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