METHOD FOR INSPECTING OIL-FILLED ELECTRICAL APPARATUS |
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| 申请号 | EP14900426 | 申请日 | 2014-08-27 | 公开(公告)号 | EP3188201A4 | 公开(公告)日 | 2018-02-28 |
| 申请人 | MITSUBISHI ELECTRIC CORP; | 发明人 | KURIYAMA RYOTA; KATO FUKUTARO; NISHIURA RYUICHI; TOYAMA SATORU; MIZUNO KOTA; | ||||
| 摘要 | Provided is a method for diagnosing an oil-filled electrical apparatus capable of diagnosing whether or not a discharge has occurred inside the oil-filled electrical apparatus with higher accuracy than before. The method for diagnosing the oil-filled electrical apparatus in the present invention is a method for diagnosing whether or not a discharge has occurred inside the oil-filled electrical apparatus. The diagnosing method includes: an in-oil gases analyzing step of analyzing hydrogen gas and a gas selected from the group consisting of methane, ethane, ethylene, acetylene, hydrocarbon having a carbon number of 3 or 4, carbon monoxide, carbon dioxide, oxygen, and nitrogen, contained in an insulating oil used inside the oil-filled electrical apparatus; a step of analyzing a causative substance serving as a cause of generation of hydrogen in the insulating oil irrespective of whether or not a discharge has occurred; and a step of diagnosing whether or not a discharge has occurred based on an analysis result of the in-oil gases analyzing step and an analysis result of the step of analyzing the causative substance. | ||||||
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