JPH0318771A - Rotary electric machine - Google Patents
Rotary electric machineInfo
- Publication number
- JPH0318771A JPH0318771A JP1152382A JP15238289A JPH0318771A JP H0318771 A JPH0318771 A JP H0318771A JP 1152382 A JP1152382 A JP 1152382A JP 15238289 A JP15238289 A JP 15238289A JP H0318771 A JPH0318771 A JP H0318771A
- Authority
- JP
- Japan
- Prior art keywords
- slip ring
- shared voltage
- inter
- magnetic pole
- layer short
- 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
- 239000011229 interlayer Substances 0.000 claims abstract description 16
- 238000004804 winding Methods 0.000 claims description 6
- 230000001360 synchronised effect Effects 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 abstract description 3
- 239000012212 insulator Substances 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 7
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Tests Of Circuit Breakers, Generators, And Electric Motors (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、回転子振動、特に，水車発電機や夕−ビン発
電機の回転子の異常振動の発生の未然防止に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to the prevention of rotor vibration, particularly abnormal vibration of the rotor of a water turbine generator or a turbine generator.
従来、運転中に界磁巻線の層間短絡を検出するシステム
は焦かった。Conventionally, systems for detecting interlayer short circuits in field windings during operation have been difficult to develop.
従来の方法は、電気協同研究第３７巻第６号第４８頁に
示されているが、据付時、すなわち、停止時に行なうも
のである。停止状態に於いて．界磁に直流電流を流し，
各磁極の端子間の分担電圧を測定し、その値を比較して
層間短絡の有無を検出するものである。The conventional method is shown in Denki Kyodo Kenkyu Vol. 37, No. 6, page 48, and is carried out at the time of installation, that is, at the time of stopping. In a stopped state. A direct current is passed through the field,
The shared voltage between the terminals of each magnetic pole is measured and the values are compared to detect the presence or absence of an interlayer short circuit.
よって、運開後に層間短銘検出のためにｌま、′）１（
に、機械の停止が必要である。Therefore, after the start of operation, in order to detect short marks between layers, lma,')1(
In this case, it is necessary to stop the machine.
上記従来技術は、特別な装匝、又は、システムが不要と
いう点に於いて、長所が有る７しかし、回転界磁型機で
は，検出に停止が必要という運転に制約が加えられろ欠
点や、異常振動の起因となる層間短絡を運転中に、直接
、検出出来ないという短所があった。The above-mentioned conventional technology has an advantage in that no special loading or system is required7. However, in a rotating field type machine, there are disadvantages such as restrictions on operation such as the need to stop for detection, The disadvantage is that it is not possible to directly detect interlayer short circuits that cause abnormal vibrations during operation.
本発明の目的は、運転中にレヤー間短絡を，直接、検出
することを目的としており、さらに，これにより信頼性
のより高い回転電機を提供することにある。An object of the present invention is to directly detect a short circuit between layers during operation, and further to provide a rotating electric machine with higher reliability.
上記目的を達或するために、各磁極分担電圧はＩＩＪ定
用スリップリング及び，ｍ間短絡検出盤を設ける。この
スリップリングを介し、層間短絡検出盤は、全磁極の分
担電圧ｖｔ（ｉ：磁極番号）を測定し、このｖＩを使い
層間短絡の有無を検出する．〔作用〕
眉間短絡検出盤は、測定されたｖＩを使い，次のような
判定で、層間短絡の有無を検出する。In order to achieve the above object, each magnetic pole shared voltage is provided with an IIJ regular slip ring and a short circuit detection board between m. Via this slip ring, the interlayer short circuit detection board measures the shared voltage vt (i: magnetic pole number) of all magnetic poles, and uses this vI to detect the presence or absence of an interlayer short circuit. [Operation] The glabella short circuit detection board uses the measured vI to detect the presence or absence of an interlayer short circuit by the following judgment.
Ｐ：全磁極の数
ｖｉ：ｉ番目の磁極の分担電圧，ｉ＝１〜ＰＰ
ここで、
Ｖ ｏ １ ． Ｉ Ｘ Ｐ Ｘ Ｖ ｌ＞ ０
（ ｉ ＝ １ 〜Ｐ ）の場合，ｉ番目の磁極にレ
ヤー間短絡ありと判定するものである。P: Number of total magnetic poles vi: Shared voltage of the i-th magnetic pole, i=1~PP Here, V o 1 . I X P X V l> 0
In the case of (i = 1 to P), it is determined that there is an inter-layer short circuit in the i-th magnetic pole.
なお、これにより界磁喪失の検出も可能となる。Note that this also makes it possible to detect field loss.
以下、本発明の一実施例を第１図により説明する。 An embodiment of the present invention will be described below with reference to FIG.
同期機回転子７に付く磁極８は、励磁盤１より励磁用ス
リップリング４を介して励磁される。The magnetic poles 8 attached to the synchronous machine rotor 7 are excited by the excitation plate 1 via the excitation slip ring 4.
層間短絡検出盤２は、分担電圧測定用スリップリング５
，ブラシ６を介して、分担電圧Ｖｓ を測定する。全磁
極の分担電圧を測定するため，スリップリング５は、絶
縁物５ａにより，極数をＰ個とすると、円周方向Ｐ個に
分割されている。又、各磁極の分担電圧測定用配線１０
（全磁極でＰ本）はスリップリング５のＰ個の分割片に
，それぞれ、接続されている。The interlayer short circuit detection board 2 includes a slip ring 5 for measuring shared voltage.
, the shared voltage Vs is measured via the brush 6. In order to measure the shared voltage of all the magnetic poles, the slip ring 5 is divided into P pieces in the circumferential direction by an insulator 5a, assuming that the number of poles is P. In addition, wiring 10 for measuring the shared voltage of each magnetic pole
(P total magnetic poles) are connected to P divided pieces of the slip ring 5, respectively.
眉間短絡検出盤２は、全分担電圧Ｖｉ （ｉ＝１〜Ｐ）
より、層間短絡の有無を判別する。The glabella short circuit detection board 2 has a total voltage Vi (i=1 to P)
From this, it is determined whether there is an interlayer short circuit.
短絡があれば、警報、又は、停止信号を、同期機制御盤
に伝達する。If there is a short circuit, an alarm or stop signal is transmitted to the synchronous machine control panel.
本発明によれば、回転界磁型同期機に於いて、運転中に
、常時、界磁巻線の眉間短絡を監視し、検出することが
出来る。According to the present invention, in a rotating field type synchronous machine, a glabella short circuit in a field winding can be constantly monitored and detected during operation.
よって，眉間短絡に起因する異常振動の検出遅れによる
機器損傷などを妨げる。This prevents damage to equipment due to delays in detecting abnormal vibrations caused by glabellar short circuits.
すなわち、本発明によれば、機器の信頼性を向上させる
効果がある。That is, according to the present invention, there is an effect of improving the reliability of the device.
第１図は本発明の実施例の制御系統図である。
２・・・層間短絡検出盤、５・・・分担電圧測定用スリ
ップリング、５ａ・・・絶縁物、１０・・・分担電圧測
定用第１図
（FIG. 1 is a control system diagram of an embodiment of the present invention. 2... Interlayer short circuit detection board, 5... Slip ring for measuring shared voltage, 5a... Insulator, 10... Figure 1 for measuring shared voltage (
Claims (1)
担電圧値を測定し、その電圧値より前記界磁巻線の層間
短絡の有無を判定する装置を備えたことを特徴とする回
転電機。[Claims] 1. In a rotating electrical machine consisting of an armature winding and a field winding, the DC shared voltage value for each magnetic pole of the field winding is measured even while the rotor is rotating, and the voltage is calculated. A rotating electrical machine characterized by comprising a device for determining the presence or absence of an interlayer short circuit in the field winding based on the value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1152382A JPH0318771A (en) | 1989-06-16 | 1989-06-16 | Rotary electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1152382A JPH0318771A (en) | 1989-06-16 | 1989-06-16 | Rotary electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0318771A true JPH0318771A (en) | 1991-01-28 |
Family
ID=15539304
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1152382A Pending JPH0318771A (en) | 1989-06-16 | 1989-06-16 | Rotary electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0318771A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7772870B2 (en) * | 2006-09-27 | 2010-08-10 | Hitachi, Ltd. | Method and apparatus for layer short detection of electric rotating machine |
-
1989
- 1989-06-16 JP JP1152382A patent/JPH0318771A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7772870B2 (en) * | 2006-09-27 | 2010-08-10 | Hitachi, Ltd. | Method and apparatus for layer short detection of electric rotating machine |
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