TW343281B - Method and apparatus for diagnosing degradation of an electric machine - Google Patents

Method and apparatus for diagnosing degradation of an electric machine

Info

Publication number
TW343281B
TW343281B TW086107620A TW86107620A TW343281B TW 343281 B TW343281 B TW 343281B TW 086107620 A TW086107620 A TW 086107620A TW 86107620 A TW86107620 A TW 86107620A TW 343281 B TW343281 B TW 343281B
Authority
TW
Taiwan
Prior art keywords
electric machine
reflective
optical fiber
absorptivity
degradation
Prior art date
Application number
TW086107620A
Other languages
English (en)
Inventor
Yutaka Takezawa
Yuzo Ito
Shigekatsu Sato
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of TW343281B publication Critical patent/TW343281B/zh

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
    • G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
TW086107620A 1996-06-28 1997-06-03 Method and apparatus for diagnosing degradation of an electric machine TW343281B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16896196 1996-06-28

Publications (1)

Publication Number Publication Date
TW343281B true TW343281B (en) 1998-10-21

Family

ID=15877776

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086107620A TW343281B (en) 1996-06-28 1997-06-03 Method and apparatus for diagnosing degradation of an electric machine

Country Status (4)

Country Link
US (1) US5774228A (zh)
EP (1) EP0816830A3 (zh)
CN (1) CN1072360C (zh)
TW (1) TW343281B (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI665440B (zh) * 2017-10-04 2019-07-11 日商日立製作所股份有限公司 Diagnostic device for on-load tap changer, diagnostic method for on-load tap changer, diagnostic device for transformer

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1054251A4 (en) * 1998-02-02 2001-05-02 Hitachi Ltd METHOD AND APPARATUS FOR DIAGNOSING FUEL DETERIORATION
JP2003222587A (ja) * 2001-11-20 2003-08-08 Hitachi Ltd 非破壊劣化診断方法およびその診断装置
US20100157304A1 (en) * 2006-01-23 2010-06-24 Ntn Corporation Lubricant deterioration detecting device and detecting device incorporated bearing assembly
JP4880489B2 (ja) * 2007-01-26 2012-02-22 株式会社日立製作所 シリコーン液入り電気機器、シリコーン液入り変圧器、及びシリコーン液入り電気機器に使用されているシリコーン液中の環状化合物の測定方法
US20110246149A1 (en) * 2008-12-25 2011-10-06 Mitsubishi Electric Corporation Method for predicting possibility of occurrence of anomaly in oil-filled electrical apparatus
JP5787565B2 (ja) * 2011-03-23 2015-09-30 株式会社東芝 絶縁劣化診断方法
US9383315B2 (en) * 2011-10-21 2016-07-05 Abb Technology Ag Sensor structure for online monitoring of furans in power transformers
JP6129568B2 (ja) * 2013-01-31 2017-05-17 株式会社日立ハイテクノロジーズ 自動分析装置
BR112015031292A2 (pt) * 2013-06-18 2017-07-25 Siemens Ag método e sistema para monitorar a qualidade de fluidos
JP6443851B2 (ja) 2014-08-04 2018-12-26 キヤノン株式会社 被検体情報取得装置、被検体情報取得方法およびプログラム
KR101986802B1 (ko) * 2018-02-06 2019-09-04 (주)테크윈시스템 전기설비의 절연물 특성 열화 감시 및 진단 시스템
WO2020260539A1 (de) * 2019-06-26 2020-12-30 Gridinspect Gmbh Verfahren und einrichtung zum ermitteln eines polymerisationsgrades eines isolationspapiers
RU2735627C1 (ru) * 2019-12-30 2020-11-05 Общество с ограниченной ответственностью "Научно-производственное предприятие "Сакоса" Способ определения степени полимеризации бумажной изоляции трансформатора

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03226651A (ja) * 1990-01-31 1991-10-07 Yaskawa Electric Mfg Co Ltd 活線絶縁診断装置
JPH04357440A (ja) * 1990-08-20 1992-12-10 Shiseido Co Ltd 光音響セルおよび光音響測定装置
US5241184A (en) * 1991-09-26 1993-08-31 Electric Power Research Institute Apparatus and method for quantizing remaining lifetime of transmission cable insulation
JP3056369B2 (ja) * 1994-03-30 2000-06-26 三菱電機株式会社 油入電気機器の寿命診断装置及び方法
JPH0815131A (ja) * 1994-06-29 1996-01-19 Hitachi Ltd 劣化診断システム

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI665440B (zh) * 2017-10-04 2019-07-11 日商日立製作所股份有限公司 Diagnostic device for on-load tap changer, diagnostic method for on-load tap changer, diagnostic device for transformer

Also Published As

Publication number Publication date
CN1072360C (zh) 2001-10-03
EP0816830A2 (en) 1998-01-07
US5774228A (en) 1998-06-30
CN1175694A (zh) 1998-03-11
EP0816830A3 (en) 1999-06-09

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