JPS62250613A - Foil-wound transformer - Google Patents
Foil-wound transformerInfo
- Publication number
- JPS62250613A JPS62250613A JP9335986A JP9335986A JPS62250613A JP S62250613 A JPS62250613 A JP S62250613A JP 9335986 A JP9335986 A JP 9335986A JP 9335986 A JP9335986 A JP 9335986A JP S62250613 A JPS62250613 A JP S62250613A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- temperature
- foil
- observation window
- measuring
- 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 claims abstract description 66
- 230000001678 irradiating effect Effects 0.000 claims abstract description 3
- 238000001514 detection method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000001228 spectrum Methods 0.000 abstract description 2
- 238000009413 insulation Methods 0.000 description 8
- 238000005259 measurement Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000000116 mitigating effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は金属シートと絶縁シートとを重ねて巻いた箔巻
巻線を有する箔巻変圧器に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a foil-wound transformer having a foil-wound winding in which a metal sheet and an insulating sheet are wound in layers.
（従来の技術）
箔巻変圧器には、鉄心脚の周囲に金属シートを巻回した
高圧巻線と低圧巻線とによって構成された箔状巻線が用
いられる。この箔状巻線は、通常の巻線を用いた変圧器
に比較すると占積率が良い為、小型軽量化を実現できる
特徴があり、既に、数ＫＶ、数１００ＫＶＡ程度の一比
較低電圧、小言Ｇ変圧器として実用化されている。また
、近年は、その優れた長所に鑑み、高電圧、大容量の変
圧器への適用が実現してきている。(Prior Art) A foil-wound transformer uses a foil-like winding composed of a high-voltage winding and a low-voltage winding in which a metal sheet is wound around an iron core leg. This foil winding has a good space factor compared to transformers using normal windings, so it has the feature of being able to achieve smaller size and lighter weight. It has been put into practical use as a Nagging G transformer. In addition, in recent years, in view of its excellent advantages, it has been applied to high voltage, large capacity transformers.
第２図は、この様な箔巻変圧器の巻線栴成図である。主
脚鉄心１に金属シートと絶縁シートを巻回して低圧巻線
２と高圧巻線３が形成され、これら巻線２，３は絶縁物
４によってヨーク鉄心５等の接地物に対し絶縁状態で支
持され、絶縁媒体６の封入されたタンク７内に収納され
ている。巻線の端部には電界緩和用の静電シールド８が
設けられている。FIG. 2 is a diagram of the winding structure of such a foil-wound transformer. A low-voltage winding 2 and a high-voltage winding 3 are formed by winding a metal sheet and an insulating sheet around the main landing gear core 1, and these windings 2 and 3 are insulated from ground objects such as the yoke core 5 by an insulator 4. It is supported and housed in a tank 7 in which an insulating medium 6 is enclosed. An electrostatic shield 8 for mitigating the electric field is provided at the end of the winding.
この様な箔巻変圧器での最大の技術的問題点はいかに冷
却能力を向上させ高い絶縁能力を持たせられるかという
ことと、変圧器の信頼性を高め保全・保護の監視システ
ムを確立することにある。The biggest technical problem with such foil-wrapped transformers is how to improve the cooling capacity and provide high insulation ability, and how to improve the reliability of the transformer and establish a maintenance and protection monitoring system. There is a particular thing.
（発明が解決しようとする問題点）
変圧器の運転において、巻線温度の上Ｒを防止し、冷却
することは重要なポイントである。巻線内の温度が局部
的に上貸し、オーバーヒートを引き起こすと絶縁性能に
も支障をきたし高温により絶縁シートが損傷を受けたり
、絶縁破壊の原因となる。(Problems to be Solved by the Invention) In the operation of a transformer, it is important to prevent the winding temperature from rising and to cool it. If the temperature inside the winding locally increases and causes overheating, the insulation performance will be affected, and the high temperature may damage the insulation sheet or cause insulation breakdown.
このような巻線の温度を測定する方法として、巻線内に
サーミスタ等の温度測定用の測定端子をそう人しておき
巻線の温度を測定する方法がある。As a method for measuring the temperature of such a winding, there is a method in which a temperature measuring terminal such as a thermistor is placed inside the winding and the temperature of the winding is measured.
ところが、巻線内に測定端子をそう人することにより巻
線内に絶縁上の弱点を作ることになり巻線の絶縁信頼性
を著しく損ない信頼性の面で逆効果を生じさせることが
あった。However, placing measurement terminals inside the winding creates insulation weaknesses within the winding, which can significantly impair the insulation reliability of the winding and have the opposite effect in terms of reliability. .
本発明は、上記の点に鑑みなされたもので、その目的は
巻線の温度を監視・検出する装置を具備し、巻線のオー
バーヒートを事前に防止する様にした箔巻変圧器を提供
することにある。The present invention has been made in view of the above points, and its purpose is to provide a foil-wound transformer that is equipped with a device for monitoring and detecting the temperature of the winding, and is designed to prevent overheating of the winding in advance. There is a particular thing.
（問題点を解決するための手段および作用）本発明の箔
巻変圧器は、変圧器タンク上部に巻線上部の温度を測定
・監視し、検出する検出装置を設けた観測窓を設け、こ
の観測窓を通じて巻線の温度を測定・監視するようにし
たものである。(Means and effects for solving the problems) The foil-wound transformer of the present invention has an observation window installed at the top of the transformer tank equipped with a detection device for measuring, monitoring and detecting the temperature at the top of the winding. The winding temperature is measured and monitored through an observation window.
（実施例） 以下、本発明の一実施例を第１図を参照して説明する。(Example) An embodiment of the present invention will be described below with reference to FIG.
本実施例において、主脚鉄心１に台底シートと絶縁シー
トを巻回して低圧巻線２と高圧巻線３が形成されタンク
７に収納された箔巻変圧器に対し、巻線の上部に位置す
る変圧器タンク７の上部に観測窓１０を設け、この観測
窓１０を通じて巻線の温度を測定し、検出装置！１１に
より検出・監視する。巻線の温度は観測窓１０を通じて
赤外線、紫外線等の光を常時又は、一定間隔で巻線上部
に照射し、例えば巻線の温度によって変化する波長やス
ペクトルの比等を測定することにより温度の変化を読み
とる方法により温度を検出する方法や、巻線自身から発
生する赤外線量を観測窓を通じて検出し温度を測定する
方法等による。In this embodiment, a low-voltage winding 2 and a high-voltage winding 3 are formed by winding a bottom sheet and an insulating sheet around the main landing gear core 1, and the foil-wound transformer is housed in a tank 7. An observation window 10 is provided at the top of the transformer tank 7, and the temperature of the winding is measured through this observation window 10. 11 for detection and monitoring. The temperature of the winding can be determined by irradiating the upper part of the winding with light such as infrared rays or ultraviolet rays through the observation window 10 at all times or at regular intervals, and measuring, for example, the ratio of wavelengths and spectra that change depending on the temperature of the winding. There are methods of detecting temperature by reading changes, and methods of measuring temperature by detecting the amount of infrared rays generated from the winding itself through an observation window.
また、巻線内あるいはタンク７内に温度を感知し発光す
る素子をそう人しこの素子からの信号を光学的に測定す
ることにより巻線の温度を測定・監視することもできる
。It is also possible to measure and monitor the temperature of the winding by installing an element that senses temperature and emits light inside the winding or in the tank 7 and optically measuring the signal from this element.
この様に構成された箔巻変圧器は巻線の温度をタンクに
設けられた観測窓より間接的に光等の手段により正確に
測定し、しかも巻線内に温度測定用のサーチコイル等を
取りつけること必要がない。A foil-wound transformer configured in this way can accurately measure the temperature of the winding indirectly through an observation window provided in the tank using means such as light, and also has a search coil for temperature measurement inside the winding. No need to install.
従って絶縁信頼性を損うことは一切ない。Therefore, insulation reliability is not impaired at all.
また、巻線の最高温度点は通常巻線の上部に限られるこ
と、また、箔巻変圧器であるため巻線端部の電界緩和用
シールド８は巻線の角部に配置され、巻線の上部には本
発明の温度測定用の信号を妨害する障害物はほとんどな
くタンクの巻線上部の最適な位置に測定用観測窓１Ｇを
設置することができる。In addition, the highest temperature point of the winding is usually limited to the upper part of the winding, and since it is a foil-wound transformer, the shield 8 for mitigating the electric field at the end of the winding is placed at the corner of the winding. At the top of the tank, there are almost no obstacles that can interfere with the temperature measurement signal of the present invention, and the measurement observation window 1G can be installed at an optimal position above the winding of the tank.
（発明の効果）
以上のとおり本発明によれば、巻線の温度を光学的に測
定・監視し、巻線の温度を容易にかつ確実に測定するこ
とができるので、変圧器の運転に異常が生じたりオーバ
ーヒートを起すことを防止し、安全な運転をはかること
ができる。また、巻線内に湿度測定用の測定端子等異物
をそう入し、測定線を外部にひき出す様なことも不用な
ため、また、温度測定をタンクに設【プた観測窓より間
接的に実施するので巻線の絶縁信頼性を損うことなく正
確な測定を容易に行うことができる効果がある。(Effects of the Invention) As described above, according to the present invention, the temperature of the winding can be optically measured and monitored, and the temperature of the winding can be easily and reliably measured. This prevents overheating and ensures safe driving. In addition, there is no need to insert foreign objects such as humidity measurement terminals into the windings and pull out the measurement wires to the outside. Since it is carried out in advance, accurate measurements can be easily carried out without impairing the insulation reliability of the windings.
第１図は本発明の箔巻変圧器の一実施例を示す断面図、
第２図は従来の箔巻変圧器の一例を示す断面図である。
１・・・主脚鉄心 ２・・・低圧巻線３・・・
高圧巻線 ４・・・絶縁物５・・・ヨーク鉄心
６・・・絶縁媒体７・・・タンク
８・・・高圧シールド１０・・・観測窓 １
１・・・検出装置代理人 弁理士 則 近 憲 佑
同 三俣弘文
第１図FIG. 1 is a sectional view showing an embodiment of the foil-wound transformer of the present invention;
FIG. 2 is a sectional view showing an example of a conventional foil-wound transformer. 1... Main landing gear core 2... Low voltage winding 3...
High voltage winding 4... Insulator 5... Yoke core 6... Insulating medium 7... Tank
8...High pressure shield 10...Observation window 1
1...Detection device representative Patent attorney Nori Chika Yudo Hirofumi MitsumataFigure 1
Claims (5)
巻いて成る箔巻巻線を構成し、この箔巻巻線をタンク内
に絶縁媒体と共に収容した箔巻変圧器において、変圧器
タンク上部に巻線上部の温度を測定・監視し、検出する
検出装置を設けた観測窓を取りつけたことを特徴とする
箔巻変圧器。(1) In a foil-wound transformer in which a foil-wound wire is constructed by wrapping a metal sheet and an insulating sheet overlappingly around the legs of an iron core, and this foil-wound wire is housed in a tank together with an insulating medium, the transformer A foil-wound transformer characterized by having an observation window installed at the top of the tank equipped with a detection device that measures, monitors, and detects the temperature at the top of the winding.
特徴とする特許請求の範囲第１項記載の箔巻変圧器。(2) The foil-wound transformer according to claim 1, wherein the temperature of the upper part of the winding is optically measured and monitored.
し、この素子からの信号を光学的に測定することにより
巻線の温度を測定し監視することを特徴とする特許請求
の範囲第１項記載の箔巻変圧器。(3) A claim characterized in that the temperature of the winding is measured and monitored by inserting an element that senses temperature and emits light inside the transformer and optically measuring the signal from this element. The foil-wound transformer according to item 1.
の温度を測定し監視することを特徴とする特許請求の範
囲第１項記載の箔巻変圧器。(4) The foil-wound transformer according to claim 1, wherein the temperature of the winding is measured and monitored by measuring infrared rays emitted from the winding.
を測定することにより巻線の温度を測定・監視すること
を特徴とする特許請求の範囲第１項記載の箔巻変圧器。(5) The foil-wound transformer according to claim 1, wherein the temperature of the winding is measured and monitored by irradiating the winding with light such as ultraviolet rays or infrared rays and measuring the reflected light. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9335986A JPS62250613A (en) | 1986-04-24 | 1986-04-24 | Foil-wound transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9335986A JPS62250613A (en) | 1986-04-24 | 1986-04-24 | Foil-wound transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62250613A true JPS62250613A (en) | 1987-10-31 |
Family
ID=14080086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9335986A Pending JPS62250613A (en) | 1986-04-24 | 1986-04-24 | Foil-wound transformer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62250613A (en) |
-
1986
- 1986-04-24 JP JP9335986A patent/JPS62250613A/en active Pending
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