JPH0439583Y2 - - Google Patents
Info
- Publication number
- JPH0439583Y2 JPH0439583Y2 JP1984181907U JP18190784U JPH0439583Y2 JP H0439583 Y2 JPH0439583 Y2 JP H0439583Y2 JP 1984181907 U JP1984181907 U JP 1984181907U JP 18190784 U JP18190784 U JP 18190784U JP H0439583 Y2 JPH0439583 Y2 JP H0439583Y2
- Authority
- JP
- Japan
- Prior art keywords
- electromagnetic probe
- electromagnetic
- magnet wire
- iron core
- corona discharge
- 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.)
- Expired
Links
- 239000000523 sample Substances 0.000 claims description 23
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Protection Of Generators And Motors (AREA)
- Measuring Leads Or Probes (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
- Testing Relating To Insulation (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案は高電圧回転電機巻線等の高電圧固体絶
縁物に生じるコロナ放電を検出するための電磁プ
ローブ装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to an electromagnetic probe device for detecting corona discharge occurring in a high voltage solid insulator such as a high voltage rotating electric machine winding.
高電圧固体絶縁物、特に高電圧回転電機巻線絶
縁物中には、長期にわたる運転によつてボイドが
生成したり、巻線の電磁振動によつて、鉄心スロ
ツト部に当接する絶縁層表面に施されたコロナシ
ールド層が磨滅し、絶縁層内外にコロナ放電を生
じ、放電劣化から絶縁破壊に至る恐れがある。
In high-voltage solid insulators, especially in the winding insulators of high-voltage rotating electric machines, voids may be generated due to long-term operation, and electromagnetic vibrations of the windings may cause the surface of the insulating layer to contact the core slot. The applied corona shield layer is worn away, causing corona discharge inside and outside the insulating layer, which may lead to discharge deterioration and dielectric breakdown.
したがつて絶縁破壊に至る前の高電圧回転電機
巻線を診断する手段として、その巻線に数千ボル
トから数十万ボルトの交流高電圧を印加すること
から生じる顕著なコロナ放電を検出し、絶縁の補
修又は更新を行なうことが、保守管理上極めて重
要である。そのために個々のコイルの放電情報を
得る「コロナ放電検出方法とその装置」という発
明を昭和59年４月５日付で特願昭59−066696号と
して出願した。この出願の装置の中に電磁プロー
ブ装置の記載はあるが、外側をアースしたとして
も、同軸ケーブルと電磁プローブを作業者が持つ
て高電圧巻線に近づくのは危険である。 Therefore, as a means of diagnosing the windings of high-voltage rotating electric machines before dielectric breakdown occurs, it is possible to detect significant corona discharge caused by applying high AC voltages of several thousand to hundreds of thousands of volts to the windings. It is extremely important for maintenance management to repair or renew the insulation. To this end, he filed an invention as Japanese Patent Application No. 59-066696 on April 5, 1982, entitled ``Corona discharge detection method and apparatus'' for obtaining information on the discharge of individual coils. Although there is a description of an electromagnetic probe device among the devices in this application, even if the outside is grounded, it is dangerous for a worker to approach the high voltage winding while holding the coaxial cable and electromagnetic probe.
本考案の目的は、現場測定用として、作業が安
全で持ち運びや、保管に極めて有利なコロナ放電
検出用の電磁プローブ装置を提供することにあ
る。
An object of the present invention is to provide an electromagnetic probe device for detecting corona discharge that is safe to work with and extremely convenient for carrying and storing for on-site measurements.
本考案においては、鉄心の複数のスロツトに納
められた個々のコイルにまたがつて、磁性体コア
にマグネツトワイヤを巻回した電磁プローブを鉄
心のテイース部に当接させて前記コイルのコロナ
放電検出を行う電磁プローブ装置において、前記
プローブを複数個の接離可能な短尺の絶縁棒を接
続してなる絶縁支持棒にて支持するとともに、前
記電磁プローブのマグネツトワイヤを少なくとも
電磁プローブ取付側の絶縁棒に設けた中空穴に挿
入した外側導体を接地した同軸ケーブルを介して
検出装置に接続したことにより安全性を大にする
ものである。
In the present invention, an electromagnetic probe with a magnet wire wound around a magnetic core is brought into contact with the teeth of the iron core to straddle individual coils housed in multiple slots of the iron core to generate corona discharge in the coils. In an electromagnetic probe device that performs detection, the probe is supported by an insulating support rod formed by connecting a plurality of short insulating rods that can be connected to and separated from each other, and the magnet wire of the electromagnetic probe is connected at least to the side where the electromagnetic probe is attached. Safety is increased by connecting the outer conductor inserted into the hollow hole provided in the insulating rod to the detection device via a grounded coaxial cable.
実施例 １
以下、本考案の第１の実施例について、第１図
ないし第３図を参照して説明する。
Embodiment 1 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
電磁プローブ１は円弧状（又は直線状でもよ
い）のコア１ａにマグネツトワイヤ１ｂを巻回し
たものであり、コロナ放電測定時には、鉄心スロ
ツト２内に納められたコイル３と電磁的に良好な
結合を得るため、そのスロツト２を挟む両テイー
ス４，４部に当接させ、楔５を介してコイル３に
またがらせる。マグネツトワイヤ１ｂは外側を接
地した同軸ケーブル６によりコロナ放電パルス信
号を検出装置７に入力するように接続する。電磁
プローブ１は金属帯８により、マグネツトワイヤ
１ｂ保護用の弾性体９を介して絶縁支持棒１０に
固定する。第２図の３ａはコイル３のエンド部で
あり、１１は鉄心を示す。そして、第３図に示す
ように絶縁支持棒１０はいんろう状の接離部１４
にて短尺の１０ａ，１０ｂ，１０ｃ等に分割し得
るものとし、かつ中空穴１２を有し、これに同軸
ケーブル６を挿入する。 The electromagnetic probe 1 has a magnet wire 1b wound around an arcuate (or linear) core 1a, and when measuring corona discharge, it is in good electromagnetic contact with the coil 3 housed in the iron core slot 2. In order to achieve a connection, the slot 2 is brought into contact with both teeth 4, 4 parts sandwiching the slot 2, and the coil 3 is straddled via the wedge 5. The magnet wire 1b is connected to a coaxial cable 6 whose outer side is grounded so as to input a corona discharge pulse signal to a detection device 7. The electromagnetic probe 1 is fixed to an insulating support rod 10 by a metal band 8 via an elastic body 9 for protecting the magnet wire 1b. 3a in FIG. 2 is the end portion of the coil 3, and 11 indicates the iron core. As shown in FIG.
It can be divided into short lengths 10a, 10b, 10c, etc., and has a hollow hole 12 into which the coaxial cable 6 is inserted.
次に作用について説明する。 Next, the effect will be explained.
電磁プローブ１を絶縁支持棒１０に固定したか
ら、作業者は絶縁支持棒１０を持つて、電磁プロ
ーブ１を所望のテイース４に当接すればよいの
で、高電圧コイルエンド３ａに近づく必要が無く
なり、同軸ケーブル６は確実に絶縁支持棒の中空
穴１２内に納められるので安全性が高く、かつ、
長い絶縁支持棒１０を短かく分割して、持ち運び
や保管の際、取扱いが便利になつて、安全で取扱
いの便利な電磁プローブ装置が得られる。 Since the electromagnetic probe 1 is fixed to the insulated support rod 10, the operator only has to hold the insulated support rod 10 and bring the electromagnetic probe 1 into contact with a desired tooth 4, so there is no need to approach the high voltage coil end 3a. The coaxial cable 6 is securely housed within the hollow hole 12 of the insulated support rod, so safety is high, and
By dividing the long insulating support rod 10 into short pieces, it becomes convenient to handle when carrying or storing, and an electromagnetic probe device that is safe and convenient to handle can be obtained.
実施例 ２
次に第４図を参照して第２の実施例を説明す
る。Embodiment 2 Next, a second embodiment will be described with reference to FIG.
これは実施例１の中空穴１２を、コイルエンド
３ａより少し外方位置まで設け、その底部に外部
引出穴１３を設けて同軸ケーブル１６を外部引出
穴１３から引出したもので、他は実施例１と同様
である。 In this example, the hollow hole 12 of Embodiment 1 is provided to a position slightly outward from the coil end 3a, and an external pull-out hole 13 is provided at the bottom of the hollow hole 12, and the coaxial cable 16 is pulled out from the external pull-out hole 13. It is the same as 1.
このようにすると実施例１に準じた作用効果が
得られる。 In this way, effects similar to those of the first embodiment can be obtained.
尚、第５図、第６図、第７図に示すように接離
部をねじ結合にするとか、テーパ結合や、ほぞ結
合にしてもよい。 Incidentally, as shown in FIGS. 5, 6, and 7, the connecting/separating portions may be screwed, tapered, or tenoned.
以上説明したように、本考案によれば、高電圧
回転電機巻線の診断のため、数千ボルトから数十
万ボルトの交流高電圧を印加することから生じる
顕著なコロナ放電を検出する現場測定用として作
業が安全で、持ち運びや保管に極めて有利な電磁
プローブ装置を提供することができる。
As explained above, according to the present invention, on-site measurement is performed to detect significant corona discharge caused by applying AC high voltage of several thousand volts to several hundred thousand volts for diagnosis of high-voltage rotating electric machine windings. It is possible to provide an electromagnetic probe device that is safe for use and extremely convenient to carry and store.
第１図は本考案の電磁プローブ装置の第１の実
施例を示す横断面図、第２図は第１図の要部縦断
面図、第３図は第２図の要部拡大縦断面図、第４
図ないし第７図はそれぞれ異なる他の実施例の要
部を示す縦断面図である。
１……電磁プローブ、１ａ……磁性体コア、１
ｂ……マグネツトワイヤ、２……スロツト、３…
…コイル、４……テイース、６……同軸ケーブ
ル、７……検出装置、１０……絶縁支持棒、１１
……回転電機の鉄心、１２……中空穴、１４……
接離部。
Fig. 1 is a cross-sectional view showing a first embodiment of the electromagnetic probe device of the present invention, Fig. 2 is a longitudinal sectional view of the main part of Fig. 1, and Fig. 3 is an enlarged longitudinal sectional view of the main part of Fig. 2. , 4th
7 through 7 are vertical cross-sectional views showing essential parts of other different embodiments. 1... Electromagnetic probe, 1a... Magnetic core, 1
b... Magnet wire, 2... Slot, 3...
... Coil, 4 ... Teeth, 6 ... Coaxial cable, 7 ... Detection device, 10 ... Insulation support rod, 11
... Iron core of rotating electric machine, 12 ... Hollow hole, 14 ...
Contact/separation part.
Claims (1)
個々のコイルにまたがつて、磁性体コアにマグネ
ツトワイヤを巻回した電磁プローブを鉄心のテイ
ース部に当接させて前記コイルのコロナ放電検出
を行う電磁プローブ装置において、前記電磁プロ
ーブを複数個の接離可能な短尺の絶縁棒を接続し
てなる絶縁支持棒にて支持するとともに、前記電
磁プローブのマグネツトワイヤを少なくとも電磁
プローブ取付側の絶縁棒に設けた中空穴に挿入し
た外側導体を接地した同軸ケーブルを介して検出
装置に接続したことを特徴とする電磁プローブ装
置。 An electromagnetic probe with a magnet wire wound around a magnetic core is brought into contact with the teeth of the iron core to detect corona discharge in the coils, spanning individual coils housed in multiple slots in the iron core of a rotating electric machine. In the electromagnetic probe device, the electromagnetic probe is supported by an insulated support rod formed by connecting a plurality of short insulating rods that can be connected and separated, and the magnet wire of the electromagnetic probe is insulated at least on the side where the electromagnetic probe is attached. An electromagnetic probe device characterized in that an outer conductor inserted into a hollow hole provided in a rod is connected to a detection device via a grounded coaxial cable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984181907U JPH0439583Y2 (en) | 1984-11-30 | 1984-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984181907U JPH0439583Y2 (en) | 1984-11-30 | 1984-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6198340U JPS6198340U (en) | 1986-06-24 |
| JPH0439583Y2 true JPH0439583Y2 (en) | 1992-09-16 |
Family
ID=30739443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984181907U Expired JPH0439583Y2 (en) | 1984-11-30 | 1984-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0439583Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013113691A (en) * | 2011-11-28 | 2013-06-10 | Toshiba Corp | Insulation diagnosis apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5351471A (en) * | 1976-10-20 | 1978-05-10 | Fujitsu Ltd | Printed board trouble shooting method and device |
-
1984
- 1984-11-30 JP JP1984181907U patent/JPH0439583Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5351471A (en) * | 1976-10-20 | 1978-05-10 | Fujitsu Ltd | Printed board trouble shooting method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6198340U (en) | 1986-06-24 |
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