JPWO2020208812A1 - 短絡検知装置および短絡検知方法 - Google Patents
短絡検知装置および短絡検知方法 Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 194
- 230000004907 flux Effects 0.000 claims abstract description 136
- 238000004804 winding Methods 0.000 claims abstract description 63
- 238000000034 method Methods 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 40
- 238000004458 analytical method Methods 0.000 claims description 15
- 238000010586 diagram Methods 0.000 description 18
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
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- 238000001914 filtration Methods 0.000 description 5
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- 229910052742 iron Inorganic materials 0.000 description 4
- 230000006870 function Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
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- 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
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- 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
- G01R31/343—Testing dynamo-electric machines in operation
-
- 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
- G01R31/52—Testing for short-circuits, leakage current or ground faults
-
- 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
- H02K11/26—Devices for sensing voltage, or actuated thereby, e.g. overvoltage protection devices
-
- 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
- H02K11/27—Devices for sensing current, or actuated thereby
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Synchronous Machinery (AREA)
Abstract
Description
図1は、本発明の実施の形態1における短絡検知装置が適用されるタービン発電機を示す構成図である。図1では、短絡検知装置の適用対象となる回転電機を軸方向に沿って見た構成を併せて示している。本実施の形態1では、回転電機としてタービン発電機が例示されている。
なお、先の実施の形態1における短絡検知装置の構成を以下のように変形してもよい。図11は、本発明の実施の形態2における短絡検知処理を示すフローチャートである。
なお、先の実施の形態3における短絡検知装置の構成を以下のように変形してもよい。本実施の形態3では、回転子10の回転を利用することによって、界磁巻線13の短絡が生じた短絡磁極の検知信号と、界磁巻線13の短絡が生じていない健全磁極の検知信号とを用いて、短絡スロットが検知される。
なお、先の実施の形態1における短絡検知装置の構成を以下のように変形してもよい。本実施の形態4では、界磁巻線13が接触抵抗ゼロで短絡した場合には、上述した電磁解析のように、1ターン分の磁束が減少する。接触抵抗がゼロでない場合には、1ターン未満の磁束減少量となる。あるいは、界磁電流が定格負荷時と中間負荷時とでは、同じ短絡条件でも磁束減少量が異なっている。
Claims (9)
- 回転電機の回転子と固定子との間の空隙に発生する磁束を検知する磁束検知器から前記磁束に応じた検知信号を取得する信号取得部と、
前記信号取得部によって取得される前記検知信号に対して、前記検知信号に含まれる回転子スロット次数成分のうちの奇数次成分のうちの少なくとも1つの成分を除去するフィルタ処理を施し、前記フィルタ処理後の前記検知信号であるフィルタ信号を生成する信号処理部と、
前記信号処理部によって生成される前記フィルタ信号を用いて、前記回転電機の界磁巻線の短絡を検知する短絡検知部と、
を備えた短絡検知装置。 - 前記信号処理部は、前記検知信号に対して周波数分析を行い、前記周波数分析を行った前記検知信号に含まれる奇数次成分のうちの少なくとも1つの成分を除去する前記フィルタ処理を施す
請求項1に記載の短絡検知装置。 - 前記信号処理部は、前記周波数分析を行った前記検知信号に含まれる偶数次成分のうちの少なくとも1つの成分を増幅する
請求項2に記載の短絡検知装置。 - 前記短絡検知部は、現在の前記フィルタ信号と、当該フィルタ信号に連続または不連続である過去の前記フィルタ信号とを比較することで、前記界磁巻線の前記短絡を検知する
請求項1から3のいずれか1項に記載の短絡検知装置。 - 前記信号処理部は、現在の前記フィルタ信号を電気角で180度位相を遅らせた遅延信号を生成し、
前記短絡検知部は、前記現在の前記フィルタ信号と、前記遅延信号とを比較することで、前記界磁巻線の前記短絡を検知する
請求項1から3のいずれか1項に記載の短絡検知装置。 - 前記信号取得部は、電気角で180度以上位相の異なる位置に配置された複数の前記磁束検知器からそれぞれ前記検知信号を取得し、
前記短絡検知部は、前記信号処理部によって生成される各検知信号に対応する各フィルタ信号を比較することで、前記界磁巻線の前記短絡を検知する
請求項1から3のいずれか1項に記載の短絡検知装置。 - 前記信号処理部は、前記フィルタ信号を増幅する
請求項1から6のいずれか1項に記載の短絡検知装置。 - 前記磁束検知器は、径方向の磁束を検知する
請求項1から7のいずれか1項に記載の短絡検知装置。 - 回転電機の回転子と固定子との間の空隙に発生する磁束を検知する磁束検知器から前記磁束に応じた検知信号を取得する信号取得ステップと、
前記信号取得ステップで取得される前記検知信号に対して、前記検知信号に含まれる奇数次成分のうちの少なくとも1つの成分を除去するフィルタ処理を施し、前記フィルタ処理後の前記検知信号であるフィルタ信号を生成する信号処理ステップと、
前記信号処理ステップで生成される前記フィルタ信号を用いて、前記回転電機の界磁巻線の短絡を検知する短絡検知ステップと、
を備えた短絡検知方法。
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PCT/JP2019/015984 WO2020208812A1 (ja) | 2019-04-12 | 2019-04-12 | 短絡検知装置および短絡検知方法 |
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JP6725765B1 JP6725765B1 (ja) | 2020-07-22 |
JPWO2020208812A1 true JPWO2020208812A1 (ja) | 2021-05-06 |
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US (1) | US20220146593A1 (ja) |
JP (1) | JP6725765B1 (ja) |
CN (1) | CN113678007B (ja) |
DE (1) | DE112019007200T5 (ja) |
WO (1) | WO2020208812A1 (ja) |
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WO2024089788A1 (ja) * | 2022-10-26 | 2024-05-02 | 三菱電機株式会社 | 回転電機の短絡検知装置および短絡検知方法 |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4136312A (en) * | 1976-12-30 | 1979-01-23 | Westinghouse Electric Corp. | Method and apparatus for detection of rotor faults in dynamoelectric machines |
JPS609736Y2 (ja) * | 1979-03-30 | 1985-04-05 | 株式会社明電舎 | かご形誘導電動機のロ−タ−バ−折損検出装置 |
JPS585682A (ja) | 1981-07-01 | 1983-01-13 | Hitachi Ltd | 回転電機の回転子巻線異常検出装置 |
JPS60167654A (ja) * | 1984-02-09 | 1985-08-31 | Fuji Electric Co Ltd | 界磁巻線のレアシヨ−ト検出装置 |
JP2839528B2 (ja) * | 1989-02-16 | 1998-12-16 | 株式会社東芝 | 界磁巻線層間短絡位置検出装置 |
US5006769A (en) * | 1989-04-05 | 1991-04-09 | Asea Brown Boveri Ltd. | Arrangement for detecting winding shorts in the rotor winding of electrical machines |
US6798210B2 (en) * | 2002-11-07 | 2004-09-28 | General Electric Company | Speed sensitive field ground detection mode for a generator field winding |
EP1455436A1 (fr) * | 2003-03-05 | 2004-09-08 | Ecole Polytechnique Fédérale de Lausanne (EPFL) | Procédé et dispositif de traitement de signaux pour la détection de l'excentricité d'une machine synchrone |
US6911838B2 (en) * | 2003-03-31 | 2005-06-28 | General Electric Company | Online detection of shorted turns in a generator field winding |
JP4650022B2 (ja) * | 2005-02-22 | 2011-03-16 | 株式会社デンソー | 回転速度検出装置 |
US20090219030A1 (en) * | 2008-02-29 | 2009-09-03 | General Electric Company | Methods and Systems for Detecting Rotor Field Ground Faults In Rotating Machinery |
CN101672894B (zh) * | 2009-10-14 | 2012-01-04 | 华北电力大学(保定) | 基于高次谐波轴电压信号的电机转子匝间短路诊断方法 |
CN102044862B (zh) * | 2010-12-10 | 2013-05-22 | 清华大学 | 水轮发电机转子绕组匝间短路的故障特征提取方法 |
US8781765B2 (en) * | 2011-04-11 | 2014-07-15 | General Electric Company | Online monitoring system and method to identify shorted turns in a field winding of a rotor |
CN102636751A (zh) * | 2012-04-26 | 2012-08-15 | 中国人民解放军海军工程大学 | 基于励磁机励磁电流的交流无刷发电机故障检测方法 |
CN103018669B (zh) * | 2012-11-30 | 2015-03-25 | 华北电力大学(保定) | 一种高可靠性地检测笼型异步电动机转子断条故障的方法 |
CN106709128B (zh) * | 2016-10-25 | 2019-12-24 | 西安交通大学 | 一种异步电机定子匝间短路故障预测系统及方法 |
RU2650821C1 (ru) * | 2017-01-30 | 2018-04-17 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ивановский государственный энергетический университет имени В.И. Ленина" (ИГЭУ) | Способ обнаружения обрывов стержней короткозамкнутых обмоток роторов асинхронных электродвигателей |
CN206975158U (zh) * | 2017-07-12 | 2018-02-06 | 中国大唐集团科学技术研究院有限公司华东分公司 | 一种发电机转子绕组匝间短路状况的检测装置 |
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