发明名称 電気機器中絶縁油の絶縁劣化診断方法
摘要 PROBLEM TO BE SOLVED: To provide a method of diagnosing deterioration of insulating oil from water saturation estimated from an acid number and water content in oil which are measured using a measured molecular weight of the insulating oil.SOLUTION: An insulating oil deterioration diagnostic method of the present invention involves deriving water saturation, which is water content in oil divided by saturation solubility of water, from results of molecular weight measurement by gel permeation chromatography of insulation oil that fills an electrical device and measurement of acid number and water content in oil thereof. The insulating oil is diagnosed to be more deteriorated as the water saturation reaches closer to 1 or exceeds 1.
申请公布号 JP5976439(B2) 申请公布日期 2016.08.23
申请号 JP20120171440 申请日期 2012.08.01
申请人 東北電力株式会社;ユカインダストリーズ株式会社 发明人 中塚 俊;八重樫 裕司;片山 正美;小西 義則;佐藤 学
分类号 G01N33/28 主分类号 G01N33/28
代理机构 代理人
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