Title:
METHOD OF PREDICTING PROBABILITY OF ABNORMALITY OCCURRENCE IN OIL-FILLED ELECTRIC APPLIANCE
Document Type and Number:
WIPO Patent Application WO/2011/077530
Kind Code:
A1
Abstract:
A method of predicting the probability that an abnormality will occur in an oil-filled electric appliance, which involves
(1) the step of determining the concentration of dibenzyl disulfide remaining in an insulating oil sampled from the oil-filled electric appliance being working,
(2) the step of determining an estimated decrease in the residual dibenzyl disulfide concentration from an initial dibenzyl disulfide concentration determined at the time when the oil-filled electric appliance started operating,
(3) the step of calculating the initial dibenzyl disulfide concentration from the residual dibenzyl disulfide concentration and the estimated decrease, and
(4) the step of comparing the initial dibenzyl disulfide concentration with a specific control value.
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Inventors:
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
永尾 栄一 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
網本 剛 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
KATO, Fukutaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
永尾 栄一 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
網本 剛 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
KATO, Fukutaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2009/071441
Publication Date:
June 30, 2011
Filing Date:
December 24, 2009
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
永尾 栄一 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
網本 剛 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
永尾 栄一 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
網本 剛 (〒10 東京都千代田区丸の内二丁目７番３号 三菱電機株式会社内 Tokyo, 〒1008310, JP)
International Classes:
H01F27/00; H01F41/00
Attorney, Agent or Firm:
FUKAMI, Hisao et al. (Fukami Patent Office, Nakanoshima Central Tower 22nd Floor, 2-7, Nakanoshima 2-chome, Kita-ku, Osaka-sh, Osaka 05, 〒5300005, JP)
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