Title:
変圧器内部異常および劣化の診断方法と診断装置
Document Type and Number:
Japanese Patent JP6869499
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a diagnostic method and a diagnostic device that can grasp abnormality and a life of a transformer.SOLUTION: A transformer diagnostic method of the present invention diagnoses internal abnormality and deterioration of a transformer. The transformer comprises: a winding composing a coil body; an iron core; and a tank housing the winding, the coil body, and the iron core. The tank is a box composed of a bottom wall, peripheral walls, and a top plate. While the transformer is operated by energizing the winding, the transformer diagnostic method analyzes a vibration response of the transformer in an operating state based on a change of a natural frequency of the mechanical vibration, on the basis of mechanical vibration obtained by hitting the top plate of the tank with a hammer with striking force having no trouble in operation of the transformer.SELECTED DRAWING: Figure 1
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Inventors:
Yoshinori Konishi
Kato Masamichi
Satoshi Matsumoto
Kato Masamichi
Satoshi Matsumoto
Application Number:
JP2016238501A
Publication Date:
May 12, 2021
Filing Date:
December 08, 2016
Export Citation:
Assignee:
Yuka Industries Co., Ltd.
Shibaura Institute of Technology
Shibaura Institute of Technology
International Classes:
G01N29/04; G01H13/00; G01N29/12
Domestic Patent References:
| JP62222612A | ||||
| JP10174373A | ||||
| JP7098302A | ||||
| JP2007017335A | ||||
| JP53022782A |
Foreign References:
| US20140216157 | ||||
| US20150260778 |
Other References:
北川寛、外4名,「高経年変圧器のタンク振動の実測」,平成28年電気学会電力・エネルギー部門大会論文集(CD-ROM),2016年 9月,p.385
Attorney, Agent or Firm:
Shu Oikawa
Makiko Otsuki
Emi Hattori
Junichi Kobayashi
Masatake Shiga
Tadashi Takahashi
Suzuki Mitsuyoshi
Makiko Otsuki
Emi Hattori
Junichi Kobayashi
Masatake Shiga
Tadashi Takahashi
Suzuki Mitsuyoshi