JPS6331448A - Equipment for diagnosting abnormality in rotor winding of electrical rotating machine - Google Patents
Equipment for diagnosting abnormality in rotor winding of electrical rotating machineInfo
- Publication number
- JPS6331448A JPS6331448A JP61171633A JP17163386A JPS6331448A JP S6331448 A JPS6331448 A JP S6331448A JP 61171633 A JP61171633 A JP 61171633A JP 17163386 A JP17163386 A JP 17163386A JP S6331448 A JPS6331448 A JP S6331448A
- Authority
- JP
- Japan
- Prior art keywords
- field
- winding
- time
- rotor winding
- abnormality
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
- 238000004804 winding Methods 0.000 title claims abstract description 41
- 230000005856 abnormality Effects 0.000 title claims abstract description 23
- 238000003745 diagnosis Methods 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 239000011229 interlayer Substances 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 210000004709 eyebrow Anatomy 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、回転電機の回転子巻線異常診断装置に係り、
特に、回転子巻線の層間短終を検出するのに好適な異常
診断装置に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a rotor winding abnormality diagnosis device for a rotating electric machine.
In particular, the present invention relates to an abnormality diagnosis device suitable for detecting short interlayer terminations of rotor windings.
従来の技術は特開昭５８−１２５５５号公報に記載のよ
うに５回転電機の回転子巻線異常診断装置は回転子巻線
に流れる電流によって回転子表面近傍に発生する磁束を
検出する磁束検出素子により回転子巻線の異常の有無を
判定していた。しかし、この回転子春風異常診断装置で
は連続監視するためには磁束検出素子を回転電機内部に
設置する必要があるため、長時間運転では信頼性が低い
こと、また、連続監視しない場合では監視する際に磁束
検出素子を回転子回転中に回転電機内部に挿入するため
１回転子と磁束検出素子が接触する等の危険性があるこ
と、また、水素冷却型の回転電機では水素封入時に磁束
検出素子を挿入する事が難しいため、水素封入時には監
視が難しい事等の問題があった。As described in Japanese Patent Application Laid-Open No. 58-12555, the conventional technology is a rotor winding abnormality diagnosis device for a five-rotary electric machine, which detects magnetic flux generated near the rotor surface by a current flowing through the rotor winding. The presence or absence of an abnormality in the rotor winding was determined by the element. However, this rotor spring wind abnormality diagnosis device requires a magnetic flux detection element to be installed inside the rotating electrical machine in order to perform continuous monitoring, so it is less reliable during long-term operation, and if continuous monitoring is not used, the Because the magnetic flux detection element is inserted into the rotating electrical machine while the rotor is rotating, there is a risk that the first rotor and the magnetic flux detection element may come into contact with each other, and in hydrogen-cooled rotating electrical machines, the magnetic flux cannot be detected when hydrogen is filled. Since it was difficult to insert the element, there were problems such as difficulty in monitoring when hydrogen was being filled.
本発明の目的は、回転電機内部に検出素子を置かず９回
転電機運転中にも信頼性が高く２回転子巻線の異常診断
が可能な回転子巻線異常診断装置を提供することにある
。An object of the present invention is to provide a rotor winding abnormality diagnosing device that is capable of diagnosing abnormalities in two rotor windings with high reliability even during operation of a nine-rotating electric machine without placing a detection element inside the rotating electric machine. .
すなわち１本発明は、運転中の回転電機の回転子巻線の
異常を診断する装置を、界磁電流検出器と界磁電圧検出
器と界磁電流検出器で検出された界磁電流と界磁電圧検
出器で検出された界磁電圧から回転子巻線の巻線抵抗を
演算する演算器と演算器で演算された巻線抵抗を一定時
間記憶する記憶器により、演算器と記憶器の信号を比較
することにより、一定時間前の巻線抵抗と現在の巻線抵
抗を比較する事により、その抵抗の差により、−定時間
中に回転子巻線に発生した異常を診断する事ができる。In other words, the present invention provides a device for diagnosing an abnormality in the rotor winding of a rotating electric machine during operation, which detects the field current and field detected by a field current detector, a field voltage detector, and a field current detector. A calculator that calculates the winding resistance of the rotor winding from the field voltage detected by the magnetic voltage detector, and a memory that stores the winding resistance calculated by the calculator for a certain period of time. By comparing the signals, it is possible to diagnose an abnormality that has occurred in the rotor winding during a certain period of time by comparing the current winding resistance with the winding resistance a certain period of time ago. can.
界磁電流検出器及び界磁電圧検出器は回転電機の外部に
設置することが可能であるため５回転型機内部に検出素
子をＭ９置すること無く、信頼性高く、回転子巻線の異
常診断が可能である。Since the field current detector and field voltage detector can be installed outside the rotating electrical machine, there is no need to place a detection element inside the 5-rotation machine, making it highly reliable and detecting rotor winding abnormalities. Diagnosis is possible.
〔実施例〕 以下、本発明の一実施例を図により説明する。〔Example〕 Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
図において、１はタービン発電機などの界磁巻線（回転
子巻線）、２は界磁巻線１に電流を供給する励磁装置、
３は界磁電流検出器、４は界磁電圧検出器、５は界磁電
圧検出器４で検出した界磁電圧■と界磁電流検出器３で
検出した界磁電流工により、ある時刻ｔにおける界磁抵
抗Ｒｔ”−を計算する演算器、６は演算器５で計算した
ある時刻ｔにおける界磁抵抗Ｒｔを記憶し、ある時刻ｔ
より一定時間Δを前に記憶した界磁抵抗Ｒｔ−Δｔを出
力する記憶器、７は演算器５から出力されるある時刻ｔ
における界磁抵抗Ｒｔと記憶器６から出力される時刻ｔ
−Δｔにおける界磁抵抗Ｒｔ−Δｔを比較し、この界磁
抵抗Ｒｔ と界磁抵抗Ｒｔ−Δ、の差の絶対値がある値
ΔＲより大きければ、警報として信号を出す比較器、８
は比較器７から出力される警報信号を表示する表示器で
ある。In the figure, 1 is a field winding (rotor winding) such as a turbine generator, 2 is an excitation device that supplies current to the field winding 1,
3 is a field current detector, 4 is a field voltage detector, and 5 is a field voltage detected by the field voltage detector 4 and a field current detected by the field current detector 3. An arithmetic unit 6 stores the field resistance Rt at a certain time t calculated by the arithmetic unit 5, and calculates the field resistance Rt''- at a certain time t.
A memory device that outputs the field resistance Rt−Δt stored a certain time Δ before, 7 is a certain time t output from the arithmetic unit 5.
The field resistance Rt at and the time t output from the memory device 6
A comparator that compares the field resistance Rt-Δt at −Δt and outputs a signal as an alarm if the absolute value of the difference between the field resistance Rt and the field resistance Rt-Δ is larger than a certain value ΔR;
is a display that displays the alarm signal output from the comparator 7.
ある時刻ｔにおける界磁抵抗Ｒｔと時刻を一Δｔにおけ
る界磁抵抗Ｒｔ−Δ、を比較するため、ある時間Δｔの
間に界磁巻線１に異常があれば、例えば、層間短絡があ
れば時刻ｔ−Δｔにおいて、例えば、Ｒｔ−Δｉ ＝
０ 、５Ω として、層間短絡により界磁抵抗が０．４
Ω になるとすれば１時刻ｔにおいてＲｔ＝０．４Ωと
なる。従って、この界磁抵抗Ｒｔ−Δｔと界磁抵抗Ｒｔ
との差の絶対値は０．１Ωとなる。ここで、ΔＲとし
て、例えば、０．０５Ωと設定しておけば、
ｌ Ｒｔ ’−Ｒｔ、−Δｔｌ＞ΔＲ
となるので、比較器７は警報信号を出力し、表示器８で
異常を表示する。In order to compare the field resistance Rt at a certain time t and the field resistance Rt - Δ at a time Δt, if there is an abnormality in the field winding 1 during a certain time Δt, for example, if there is an interlayer short circuit, At time t-Δt, for example, Rt-Δi =
0,5Ω, field resistance is 0.4 due to interlayer short circuit.
If it becomes Ω, Rt=0.4Ω at one time t. Therefore, this field resistance Rt-Δt and field resistance Rt
The absolute value of the difference is 0.1Ω. Here, if ΔR is set to, for example, 0.05Ω, then l Rt '-Rt, -Δtl>ΔR, so the comparator 7 outputs an alarm signal and the display 8 indicates an abnormality. .
また、例えば、界磁巻線１が断線すれば、時刻を一Δｔ
において、Ｒｔ−Δ、＝０．５Ω だったものが、断線
により時刻ｔにおいてＲｔ ”ωΩ となる。Also, for example, if the field winding 1 is disconnected, the time will be changed to 1 Δt.
At time t, Rt - Δ = 0.5Ω becomes Rt ``ωΩ'' at time t due to a disconnection.
従って、この界磁抵抗Ｒｔ−Δｔと界磁抵抗Ｒｔの差の
絶対値はωΩとなる。ここでΔＲとして１例えば、０．
０５Ω と設定しておけば、
１ＲｔＲｔ−Δｔｌ＞ΔＲ
となるので、比較器７は警報信号を出力し、表示器８に
て異常を表示する。Therefore, the absolute value of the difference between this field resistance Rt-Δt and field resistance Rt is ωΩ. Here, ΔR is 1, for example, 0.
If it is set to 05Ω, 1RtRt-Δtl>ΔR, so the comparator 7 outputs an alarm signal and the display 8 indicates an abnormality.
ΔＲの設定はノイズによる誤動作を考慮して行う必要が
ある。また、界磁抵抗Ｒは界磁巻線の温度によって変化
するため、時間Δｔの間の界磁巻線の温度上昇による界
磁抵抗変化分より大きな値でΔＲを設定する必要がある
。The setting of ΔR needs to take into account malfunctions due to noise. Further, since the field resistance R changes depending on the temperature of the field winding, it is necessary to set ΔR to a value larger than the change in field resistance due to the temperature rise of the field winding during the time Δt.
本実施例によれば９回転型機内部に発生した回転子巻線
の異常、例えば、眉間短絡、断線等を回転電機の外部に
設置した界磁電流検出器、界Ｈｉ電圧検出器により検出
可能であり、現在タービン発電機等で一般的に使用して
いる界磁電流検出器。According to this embodiment, abnormalities in the rotor winding that occur inside the 9-rotation machine, such as short circuits between the eyebrows and disconnections, can be detected by the field current detector and field Hi voltage detector installed outside the rotating electric machine. This is a field current detector currently commonly used in turbine generators, etc.
界磁電圧検出器を使用することもできる。また、ΔＲの
設定を適当に行えば、ノイズによる誤動作、界磁巻線の
温度上昇による界磁抵抗変化等に影響を受けず１回転子
巻線１の異常を回転電機の運転中に信頼性高く診断する
事ができる。Field voltage detectors can also be used. In addition, if ΔR is set appropriately, abnormalities in the first rotor winding 1 can be detected reliably while the rotating electrical machine is operating without being affected by malfunctions caused by noise or changes in field resistance due to temperature rises in the field windings. It can be highly diagnosed.
本発明によれば、回転電機内部に検出素子を置かず、回
転電機運転中にも信頼性高く１回転子巻線の異常診断が
可能な回転子巻線の異常診断装置を提供することができ
る。According to the present invention, it is possible to provide a rotor winding abnormality diagnosis device that is capable of highly reliable abnormality diagnosis of a single rotor winding even during operation of a rotating electric machine without placing a detection element inside the rotating electric machine. .
図は本発明の一実施例の回転電機回転子巻線の異常診断
装置の動作！Ｍ理を説明するブロック図である。The figure shows the operation of the abnormality diagnosis device for the rotor winding of a rotating electrical machine according to an embodiment of the present invention! It is a block diagram explaining M theory.
Claims (1)
置において、 界磁電流検出器、界磁電圧検出器、前記界磁電流検出器
で検出された界磁電流と前記界磁電圧検出器で検出され
た界磁電圧から前記回転子巻線の巻線抵抗を演算する演
算器、前記演算器で演算された前記巻線抵抗を一定時間
記憶する記憶器、前記演算器の信号と前記記憶器の信号
を比較する比較器、前記比較器の比較判定結果を表示す
る表示器を含むことを特徴とする回転電機の回転子巻線
異常診断装置。[Claims] 1. An abnormality diagnosis device for a rotor winding of a rotating electric machine having a rotating field, comprising: a field current detector, a field voltage detector, and a field detected by the field current detector. an arithmetic unit that calculates the winding resistance of the rotor winding from the current and the field voltage detected by the field voltage detector; a memory that stores the winding resistance calculated by the arithmetic unit for a certain period of time; A rotor winding abnormality diagnosing device for a rotating electric machine, comprising: a comparator that compares a signal from the arithmetic unit with a signal from the storage device; and a display device that displays a comparison determination result of the comparator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61171633A JPS6331448A (en) | 1986-07-23 | 1986-07-23 | Equipment for diagnosting abnormality in rotor winding of electrical rotating machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61171633A JPS6331448A (en) | 1986-07-23 | 1986-07-23 | Equipment for diagnosting abnormality in rotor winding of electrical rotating machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6331448A true JPS6331448A (en) | 1988-02-10 |
Family
ID=15926806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61171633A Pending JPS6331448A (en) | 1986-07-23 | 1986-07-23 | Equipment for diagnosting abnormality in rotor winding of electrical rotating machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6331448A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021023050A (en) * | 2019-07-29 | 2021-02-18 | 株式会社東芝 | Field winding layer short circuit detection device and field winding layer short circuit detection method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57142156A (en) * | 1981-02-26 | 1982-09-02 | Mitsubishi Electric Corp | Anomaly detector for rotary electric machine |
| JPS57173765A (en) * | 1981-04-18 | 1982-10-26 | Hitachi Ltd | Insulation resistance measuring device for field winding of rotating electric machine |
-
1986
- 1986-07-23 JP JP61171633A patent/JPS6331448A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57142156A (en) * | 1981-02-26 | 1982-09-02 | Mitsubishi Electric Corp | Anomaly detector for rotary electric machine |
| JPS57173765A (en) * | 1981-04-18 | 1982-10-26 | Hitachi Ltd | Insulation resistance measuring device for field winding of rotating electric machine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021023050A (en) * | 2019-07-29 | 2021-02-18 | 株式会社東芝 | Field winding layer short circuit detection device and field winding layer short circuit detection method |
| US11320489B2 (en) | 2019-07-29 | 2022-05-03 | Kabushiki Kaisha Toshiba | Field winding interlayer short-circuit detection apparatus and field winding interlayer short-circuit detection method |
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