Title:
DIAGNOSTIC METHOD FOR OIL-FILLED ELECTRIC EQUIPMENT, DIAGNOSTIC DEVICE FOR IMPLEMENTING DIAGNOSTIC METHOD, AND OIL-FILLED ELECTRIC EQUIPMENT WITH BUILT-IN DIAGNOSTIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/021017
Kind Code:
A1
Abstract:
A diagnostic method for oil-filled electric equipment that allows accurate diagnosis even when applicable to the diagnosis for the oil-filled electric equipment while running in practice, considering the temperature distribution within the equipment, as well as a method enabling the diagnosis for the oil-filled electric equipment using analytical values for the constituent of insulation oil (3) filled in the oil-filled electric equipment. The diagnostic method for the oil-filled electric equipment, which is intended for the oil-filled electric equipment having a metal part around which insulation paper (2) impregnated with the insulation oil (3) is wound, is characterized in that a point of time when the surface resistivity of a location where the largest amount of metal sulfide is precipitated on the insulation paper (2) is decreased down to the preset surface resistivity control value is judged to be a defect occurrence time.
Inventors:
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, JP)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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, 10083, JP)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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, 10083, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, 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, 10083, JP)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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, 10083, JP)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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, 10083, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, JP)
Application Number:
JP2008/064690
Publication Date:
February 25, 2010
Filing Date:
August 18, 2008
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 10083, 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, 10083, JP)
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, JP)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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, 10083, JP)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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, 10083, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, JP)
NAGAO, Eiichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, 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, 10083, JP)
TANINOUCHI, Kentaro (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
谷ノ内 健太郎 (〒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, 10083, JP)
HOSOKAWA, Noboru (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
細川 登 (〒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, 10083, JP)
AMIMOTO, Tsuyoshi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 10083, JP)
International Classes:
G01N27/04; 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, 53000, JP)
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