JP4497916B2 - コイルの余寿命推定方法およびコイルの余寿命推定装置 - Google Patents
コイルの余寿命推定方法およびコイルの余寿命推定装置 Download PDFInfo
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- JP4497916B2 JP4497916B2 JP2003423594A JP2003423594A JP4497916B2 JP 4497916 B2 JP4497916 B2 JP 4497916B2 JP 2003423594 A JP2003423594 A JP 2003423594A JP 2003423594 A JP2003423594 A JP 2003423594A JP 4497916 B2 JP4497916 B2 JP 4497916B2
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Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/35—Devices for recording or transmitting machine parameters, e.g. memory chips or radio transmitters for diagnosis
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
- H02K11/33—Drive circuits, e.g. power electronics
-
- 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
- G01R31/1227—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 of components, parts or materials
- G01R31/1263—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—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 of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
-
- 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
- G01R31/34—Testing dynamo-electric machines
- G01R31/346—Testing of armature or field windings
-
- 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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/72—Testing of electric windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Description
2a 上コイル
2b 下コイル
3a,3b 導体
4a,4b 絶縁層
5 クリップ
6 中空接続導体
7 絶縁接続管
8a 第1内部電極
8b 第2内部電極
8g 第3内部電極
9,9a,9b,9c 絶縁層
10 低抵抗層
11 コイル
12 導体
13 絶縁層
13a 第1絶縁層
13b 第2絶縁層
13c 第3絶縁層
14a 第1内部電極
14b 第2内部電極
14g 第3内部電極
15 低抵抗層
16 冷却水用絶縁接続管
17 クリップ
18a 浸入部領域
18ad 乾燥領域
19 電位測定プローブ
20 非接触表面電位計
21 波形出力端子
22 電圧測定装置
23 交流電源
24,24a,24b,24s 測定電極
25,25a,25b コイル
26 鉄心
27 誘電特性測定装置
28 巻線
29 低圧端子
30 同軸ケーブル
31 高圧端子
32 同軸ケーブル
33 口出し出力端子
34 中性点端子
35 ガード端子
36 ケーシング
37 絶縁板
38 柔軟性部材
39 電極部
40 ガード電極
41 絶縁シート
Claims (8)
- コイルの導体からの冷却水が絶縁層に漏水しているかどうかを確認し、前記導体冷却水が前記絶縁層に漏水している場合、前記導体に交番電圧を印加し、内部電極の上部の絶縁層の外表面で内部電極電位を測定し、予め作成しておいた絶縁破壊電圧と内部電極電位との相関関係から前記コイルの絶縁破壊電圧を推定する第1工程と、
前記コイルの今後の運転条件から前記コイルの温度および印加される電圧を求め、このコイル温度および印加される電圧のうち、少なくともいずれか一方による前記コイルの絶縁破壊電圧の低下速度を求める第2工程と、
第1工程および第2工程から求めたデータを外挿し、絶縁破壊電圧が前記コイルの運転に必要な電圧まで低下する時期を求める第3工程と、を備えることを特徴とするコイルの余寿命推定方法。 - コイルの導体からの冷却水が絶縁層に漏水しているかどうかを確認し、前記導体冷却水が絶縁層に漏水している場合、前記導体に交番電圧を印加し、内部電極の上部の絶縁層の外表面で内部電極電位の測定を経時的に複数回行い、測定の機会ごとに予め作成しておいた絶縁破壊電圧と内部電極電位との相関関係から前記コイルの絶縁破壊電圧を推定する第1工程と、
前記絶縁破壊電圧の経時変化カーブを求めるとともに、前記経時変化カーブを外挿し、今後の絶縁破壊電圧の低下傾向を予測する第2工程と、
前記経時変化カーブがコイルの運転に必要な電圧まで低下する時期を求める第3工程と、を備えることを特徴とするコイルの余寿命推定方法。 - 前記相関関係は、内部電極電位に対応する絶縁破壊電圧を予め作成しておいた絶縁破壊電圧−内部電極電位特性線図であることを特徴とする請求項1または2に記載のコイルの余寿命推定方法。
- 前記相関関係は、測定した内部電極電位とこの内部電極電位の初期値または前記導体冷却水の前記絶縁層への漏水がないと判断される前記コイルの内部電極電位のいずれか一方との比を求め、この求めた比に対応する絶縁破壊電圧を予め作成しておいた絶縁破壊電圧−内部電極電位の対初期値比特性線図であることを特徴とする請求項1または2記載のコイルの余寿命推定方法。
- 前記相関関係は、隣接する内部電極電位間の比を求め、この求めた比に対応する絶縁破壊電圧を予め作成しておいた絶縁破壊電圧−隣接内部電極電位比特性線図であることを特徴とする請求項1または2記載のコイルの余寿命推定方法。
- 前記相関関係から絶縁破壊電圧を推定する際、1つの内部電極の電位に対し、2つの絶縁破壊電圧値が得られる場合、以前に測定した電位の推移から2つの絶縁破壊電圧値のうち、どちらであるかを判断することを特徴とする請求項1または2記載のコイルの余寿命推定方法。
- コイルの絶縁破壊電圧の低下速度を推定する第2工程は、クリップ近傍の中空素線に一定の大きさの穴を開けた水漏れを起していない複数本のコイル、または運転中、絶縁層に導体冷却水の漏水が確認されたコイルに対し、2種類以上の温度に設定した水を各温度に対して複数本の導体に一定の水圧に保ちつつ通水、循環させ、各温度において水の浸入程度の異なる複数の時点で絶縁破壊試験を行って絶縁破壊電圧を求め、求めた絶縁破壊電圧と温水循環時間とから絶縁破壊電圧−温水循環時間線図を作成するとともに、この絶縁破壊電圧−温水循環時間線図から絶縁破壊電圧の低下速度を求め、求めた絶縁破壊電圧の低下速度を基にして循環水の温度との関係を表わしたアレーニウスプロット図を作成し、このアレーニウスプロット図から循環水の任意の温度に対応する絶縁破壊電圧の低下速度を求めることを特徴とする請求項1記載のコイルの余寿命推定方法。
- コイルの絶縁破壊電圧の低下速度を推定する第2工程は、クリップ近傍の中空素線に一定の大きさの穴を開けた水漏れを起していない複数本のコイル、または運転中、絶縁層に導体冷却水の漏水が確認された複数本のコイルを用い、それらのコイルの導体を接地し、その一部の複数本のコイルの直線部に所定の電圧を課電し、残りの複数本のコイルに対しては課電しない状態で、所定の温度に設定した温水を全コイルの導体に一定の水圧に保ちつつ通水、循環させ、水の浸入程度の異なる複数の時点で絶縁破壊試験を行って絶縁破壊電圧を求め、求めた絶縁破壊電圧と温水循環時間とから絶縁破壊電圧−温水循環時間線図を作成し、この絶縁破壊電圧−温水循環時間線図から温水循環中に課電したコイルと課電しないコイルの絶縁破壊電圧の低下速度を求め、さらに、両者の比から課電による絶縁破壊電圧の低下速度の増加率を求めることを特徴とする請求項1記載のコイルの余寿命推定方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003423594A JP4497916B2 (ja) | 2003-10-24 | 2003-12-19 | コイルの余寿命推定方法およびコイルの余寿命推定装置 |
EP04793169.6A EP1703293B1 (en) | 2003-10-24 | 2004-10-22 | Method and device for estimating remaining service life of coil |
PCT/JP2004/016061 WO2005040840A1 (ja) | 2003-10-24 | 2004-10-22 | コイルの余寿命推定方法およびコイルの余寿命推定装置 |
KR1020067007872A KR100805872B1 (ko) | 2003-10-24 | 2004-10-22 | 코일의 여수명 추정 방법 및 코일의 여수명 추정 장치 |
EP11162776.6A EP2345903B1 (en) | 2003-10-24 | 2004-10-22 | Method and apparatus for predicting the residual life of a coil |
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JP2003365317 | 2003-10-24 | ||
JP2003423594A JP4497916B2 (ja) | 2003-10-24 | 2003-12-19 | コイルの余寿命推定方法およびコイルの余寿命推定装置 |
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JP2005148039A JP2005148039A (ja) | 2005-06-09 |
JP4497916B2 true JP4497916B2 (ja) | 2010-07-07 |
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EP (2) | EP2345903B1 (ja) |
JP (1) | JP4497916B2 (ja) |
KR (1) | KR100805872B1 (ja) |
WO (1) | WO2005040840A1 (ja) |
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JP4783069B2 (ja) * | 2005-06-23 | 2011-09-28 | 株式会社東芝 | コイルの水漏れ検出方法およびこの検出方法に適用する水漏れ検出装置 |
US7616012B2 (en) | 2007-05-11 | 2009-11-10 | General Electric Company | Systems, methods, and apparatus for measuring capacitance in a stator component |
CN114355047B (zh) * | 2022-03-11 | 2022-05-24 | 华龙国际核电技术有限公司 | 一种棒位探测器线圈测试方法、装置及电子设备 |
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JPH0993873A (ja) * | 1995-07-14 | 1997-04-04 | Toshiba Corp | 回転電機巻線の余寿命評価方法 |
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JPS6327771A (ja) * | 1986-07-21 | 1988-02-05 | Yaskawa Electric Mfg Co Ltd | 余寿命計 |
JPH04299051A (ja) * | 1991-03-27 | 1992-10-22 | Mitsubishi Electric Corp | 回転電機 |
JP2856698B2 (ja) | 1995-08-08 | 1999-02-10 | 株式会社東芝 | 回転電機用固定子巻線の静電容量測定装置とその方法ならびに回転電機 |
JPH0997719A (ja) * | 1995-09-28 | 1997-04-08 | Makoto Yamamoto | トランス構造 |
JP2859596B2 (ja) | 1996-03-05 | 1999-02-17 | 株式会社東芝 | 回転電機点検装置および回転電機点検方法 |
JPH10177053A (ja) | 1996-12-18 | 1998-06-30 | Hitachi Ltd | 回転電機の固定子コイルの劣化検知方法及び装置 |
JP2000126293A (ja) | 1998-10-28 | 2000-05-09 | Shimadzu Corp | 針無注射器 |
JP4058224B2 (ja) * | 2000-06-12 | 2008-03-05 | 株式会社フジクラ | Cvケーブル余寿命推定方法 |
JP2001359257A (ja) * | 2000-06-13 | 2001-12-26 | Toshiba Corp | 回転電機点検装置および回転電機点検方法 |
JP2003185690A (ja) * | 2001-12-18 | 2003-07-03 | Toshiba Corp | 電力用変圧器 |
JP4497790B2 (ja) * | 2002-04-26 | 2010-07-07 | 株式会社東芝 | コイル劣化診断方法およびこの診断方法に適用するコイル劣化診断装置 |
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- 2003-12-19 JP JP2003423594A patent/JP4497916B2/ja not_active Expired - Lifetime
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- 2004-10-22 EP EP11162776.6A patent/EP2345903B1/en active Active
- 2004-10-22 WO PCT/JP2004/016061 patent/WO2005040840A1/ja active Application Filing
- 2004-10-22 EP EP04793169.6A patent/EP1703293B1/en active Active
- 2004-10-22 KR KR1020067007872A patent/KR100805872B1/ko active IP Right Grant
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JPH0993873A (ja) * | 1995-07-14 | 1997-04-04 | Toshiba Corp | 回転電機巻線の余寿命評価方法 |
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Publication number | Publication date |
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EP1703293A4 (en) | 2010-07-28 |
EP1703293B1 (en) | 2013-06-05 |
KR20060080591A (ko) | 2006-07-10 |
EP1703293A1 (en) | 2006-09-20 |
EP2345903B1 (en) | 2017-07-19 |
WO2005040840A1 (ja) | 2005-05-06 |
JP2005148039A (ja) | 2005-06-09 |
KR100805872B1 (ko) | 2008-02-20 |
EP2345903A1 (en) | 2011-07-20 |
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