JP2014215190A - 回転電気の絶縁診断方法 - Google Patents
回転電気の絶縁診断方法 Download PDFInfo
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- 238000009413 insulation Methods 0.000 title abstract description 21
- 238000002405 diagnostic procedure Methods 0.000 title 1
- 230000005484 gravity Effects 0.000 claims abstract description 47
- 230000006866 deterioration Effects 0.000 claims abstract description 36
- 238000003745 diagnosis Methods 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 claims abstract description 18
- 239000011347 resin Substances 0.000 claims abstract description 15
- 229920005989 resin Polymers 0.000 claims abstract description 15
- 239000002131 composite material Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 230000015556 catabolic process Effects 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 15
- 239000011810 insulating material Substances 0.000 claims description 13
- 229910010272 inorganic material Inorganic materials 0.000 claims description 10
- 239000011147 inorganic material Substances 0.000 claims description 10
- 238000006731 degradation reaction Methods 0.000 claims description 7
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000011156 evaluation Methods 0.000 abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 6
- 239000012774 insulation material Substances 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 2
- 238000005070 sampling Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract 1
- 238000011088 calibration curve Methods 0.000 description 8
- 238000004804 winding Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- 238000004364 calculation method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002845 discoloration Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000005979 thermal decomposition reaction Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
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- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
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- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/44—Resins; Plastics; Rubber; Leather
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
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Abstract
Description
(1) 巻き線のスロット部の吸湿、空隙等を劣化現象との相関関係による電気的非破壊試験により把握する方法では、直接絶縁材料の熱劣化現象を把握できない。
(2) 巻き線を機械的に固定、指示する絶縁材料の劣化度を把握できない。
(3) IEC.pub.216による耐熱性評価方法は存在するが、この方法では破壊試験、重量減少の試験項目となるため実機の巻き線には直接適用できない。このため、回転機の巻線交換等を大幅な修復をせずに、そのまま再使用が可能な試験方法の開発が望まれている。
また、樹脂と無機物から成る複合材料が前記回転機器より採取する試料が、回転電気機器の固定子コイル絶縁層又は周辺部材から採取した試料の比重装置による比重測定結果と、前記回転機器の運転時間とを照合することにより運転温度を推定する熱劣化診断を提供する。
の変色の激しい部分を目視等の観察により、試料を採取し比重により劣化度を評価診断
することが可能となる。更に、比重測定は評価方法が簡単で、装置は小型であることから
持ち運びが可能となり、発電所等の現地での定期点検時に短時間でコイル絶縁層の運転温
度、交換までの残存時間やコイルの絶縁破壊電圧(BDV)残存率等を推定でき、回転電気の
絶縁劣化診断が可能となる。
式1 ρ=Wa/(Wa-Ww)×(ρ0-d)+d
比重=ρ/ρw
ρ0:水(23℃)の密度
d:空気の密度
ρw:水(4℃)の密度
Claims (5)
- 電気機器絶縁材料の熱劣化度を診断するものであって、樹脂と無機物から成る複合材料の比重変化量と加熱時間のマスターカーブを予め作成し、このマスターカーブに前記電気機器から採取した試料の比重結果を照らし合わせて絶縁材料の運転温度を推定することを特徴とした劣化診断方法。
- 請求項1に記載の劣化診断方法おいて、樹脂と無機物から成る複合材料の最も変色の激しい部分を採取し、比重をもとに運転温度を推定することを特徴とした劣化診断方法。
- 請求項1または2に記載の劣化診断方法おいて、樹脂と無機物から成る複合材料が前記回転電気の固定子コイル絶縁層又は周辺部材であることを特徴とした劣化診断方法。
- 請求項1乃至3に記載の劣化診断方法おいて、樹脂と無機物から成る複合材料が固定子コイル絶縁層であり、得られた推定温度をもとに予め作成したモデルコイルの破壊電圧(BDV)と加熱時間のマスターカーブから、実機運転コイルのBDV残存率及び残存時間を推定することを特徴とした劣化診断方法。
- 請求項3に記載の劣化診断方法おいて、樹脂と無機物から成る複合材料が周辺部材に用いられているウエッジ材又はライナ材であることを特徴とした劣化診断方法。
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JP6200198B2 JP6200198B2 (ja) | 2017-09-20 |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021117066A (ja) * | 2020-01-24 | 2021-08-10 | 三菱パワー株式会社 | 回転電機用複合材の劣化診断方法および劣化診断システム |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58118926A (ja) * | 1982-01-07 | 1983-07-15 | Mitsubishi Electric Corp | 電気機器の運転温度履歴推定方法 |
JPH04120479A (ja) * | 1990-09-12 | 1992-04-21 | Hitachi Ltd | 電気機器の絶縁劣化推定法 |
JP2005265492A (ja) * | 2004-03-17 | 2005-09-29 | Meidensha Corp | 電気機器の絶縁劣化診断方法と診断後の電気機器運転方法 |
JP2005338045A (ja) * | 2004-04-27 | 2005-12-08 | Meidensha Corp | 電気機器の絶縁劣化診断方法 |
JP2012013640A (ja) * | 2010-07-05 | 2012-01-19 | Yokohama Rubber Co Ltd:The | タイヤ劣化判定システムおよび更生タイヤの製造方法 |
JP2012508866A (ja) * | 2008-11-14 | 2012-04-12 | アトミック エナジー オブ カナダ リミテッド | 携帯型高分子試験装置 |
-
2013
- 2013-04-26 JP JP2013093187A patent/JP6200198B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58118926A (ja) * | 1982-01-07 | 1983-07-15 | Mitsubishi Electric Corp | 電気機器の運転温度履歴推定方法 |
JPH04120479A (ja) * | 1990-09-12 | 1992-04-21 | Hitachi Ltd | 電気機器の絶縁劣化推定法 |
JP2005265492A (ja) * | 2004-03-17 | 2005-09-29 | Meidensha Corp | 電気機器の絶縁劣化診断方法と診断後の電気機器運転方法 |
JP2005338045A (ja) * | 2004-04-27 | 2005-12-08 | Meidensha Corp | 電気機器の絶縁劣化診断方法 |
JP2012508866A (ja) * | 2008-11-14 | 2012-04-12 | アトミック エナジー オブ カナダ リミテッド | 携帯型高分子試験装置 |
JP2012013640A (ja) * | 2010-07-05 | 2012-01-19 | Yokohama Rubber Co Ltd:The | タイヤ劣化判定システムおよび更生タイヤの製造方法 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2021117066A (ja) * | 2020-01-24 | 2021-08-10 | 三菱パワー株式会社 | 回転電機用複合材の劣化診断方法および劣化診断システム |
JP7374004B2 (ja) | 2020-01-24 | 2023-11-06 | 三菱重工業株式会社 | 回転電機用複合材の劣化診断方法および劣化診断システム |
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