JPH0129781Y2 - - Google Patents
Info
- Publication number
- JPH0129781Y2 JPH0129781Y2 JP1982066471U JP6647182U JPH0129781Y2 JP H0129781 Y2 JPH0129781 Y2 JP H0129781Y2 JP 1982066471 U JP1982066471 U JP 1982066471U JP 6647182 U JP6647182 U JP 6647182U JP H0129781 Y2 JPH0129781 Y2 JP H0129781Y2
- Authority
- JP
- Japan
- Prior art keywords
- winding
- electric field
- gas
- electrostatic shielding
- ring
- 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
- 238000004804 winding Methods 0.000 claims description 16
- 239000004020 conductor Substances 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 7
- 230000005684 electric field Effects 0.000 description 17
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000002648 laminated material Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Regulation Of General Use Transformers (AREA)
Description
【考案の詳細な説明】
この考案は変圧器等のガス絶縁誘導電器に関し
特に大地側の巻線支持部の構造に係る。[Detailed Description of the Invention] This invention relates to gas-insulated induction electric appliances such as transformers, and particularly relates to the structure of the winding support portion on the ground side.
ガス絶縁電器の絶縁破壊は最大電界強度の点よ
り始まり、また雷インパルス試験においては正極
性よりも負極性のインパルスの方が絶縁破壊電圧
が低いことが判明している。このため油入電器の
ように高電圧部側の電界強度を問題にすると同時
にアース側の構造物、例えば鉄心、フレーム、タ
ンク等の電界強度にも留意してその電界強度を低
める必要がある。またガス絶縁機器では特に電極
表面の突起部は電界の集中が起こり破壊電圧に影
響する原因となる。これらのためにガス絶縁機器
においては油絶縁機器に比し特に電界強度を下げ
る構造をとることならびに電極表面粗さを管理す
ることが重要となる。 Dielectric breakdown of gas-insulated electrical appliances begins at the point of maximum electric field strength, and lightning impulse tests have shown that the breakdown voltage is lower for negative polarity impulses than for positive polarity impulses. For this reason, it is necessary to reduce the electric field strength by paying attention to the electric field strength of structures on the earth side, such as iron cores, frames, tanks, etc., while at the same time considering the electric field strength on the high voltage side as in oil-filled appliances. Furthermore, in gas-insulated equipment, especially at the protrusions on the electrode surface, the electric field is concentrated, which affects the breakdown voltage. For these reasons, it is important for gas-insulated equipment to have a structure that lowers the electric field strength, and to control the electrode surface roughness, compared to oil-insulated equipment.
電気機器の電界緩和の方法としては高電界部に
曲率をもつたシールドを設けることが良く行なわ
れる。例えば変圧器についてそのアース側を考え
てみると、鉄心及び該鉄心の継鉄部に設けられて
鉄心の脚鉄に巻回された巻線を支持するフレーム
等に存在する多くの角部は円形又は環状のシール
ドで覆われる。しかしこの方法では高電界部それ
ぞれにシールドを設置すると、多くのシールドを
必要としその製作に多くの工数を必要とする。ま
た鉄心端部やフレーム端部のように近接した他の
物体の影響のあるものの電界の計算は必ずしも容
易ではなく、また信頼性も余り高くない。 As a method of alleviating the electric field of electrical equipment, it is often done to provide a shield with a curvature in the high electric field area. For example, if we consider the ground side of a transformer, many of the corners present in the core and the frame that is provided at the yoke of the core and supports the windings wound around the leg irons of the core are circular. Or covered with a ring-shaped shield. However, in this method, if a shield is installed in each high electric field section, a large number of shields are required, and a large number of man-hours are required to manufacture them. Furthermore, it is not always easy to calculate the electric field in areas where there is an influence from other nearby objects, such as the end of the iron core or the end of the frame, and the reliability is not very high.
この考案は特にアース側電界を低く押える必要
のあるガス絶縁誘導電器のシールド個数を減し、
また電器の絶縁寸法を縮少することを目的とす
る。この目的はこの考案によれば次のように構成
することにより達成される。すなわち、巻線がそ
の軸方向両端部にそれぞれ静電しやへいリングを
備え、絶縁ガス中に収納される誘導電器におい
て、前記両静電しやへいリングに前記巻線を支持
する絶縁支持物をはさんで対向し該対向する面が
平滑で、かつその端部に曲面を有し、少なくとも
表面が導電材よりなる大地電位のアースリングを
設ける。 This idea reduces the number of shields used in gas-insulated induction appliances, which require a particularly low ground-side electric field.
It also aims to reduce the insulation dimensions of electrical appliances. According to this invention, this object is achieved by the following configuration. That is, in an induction electric appliance in which a winding is provided with electrostatic shielding rings at both ends in the axial direction and is housed in an insulating gas, an insulating support that supports the winding on both electrostatic shielding rings is provided. A grounding ring is provided which faces the earth potential with the two electrodes in between, has a smooth surface and a curved surface at the end thereof, and has at least a surface made of a conductive material.
第１図はこの考案実施例の変圧器の断面図で、
巻線１の軸方向両端部に静電しやへいリング２が
配され、該リングと巻線の軸方向両アース側にア
ースリング３が設けられ、該アースリングと静電
しやへいリング２との間に巻線１を支持する支持
絶縁物４が配されている。アースリング３は少な
くとも表面は導電材よりなり、図示しないリード
線等により大地電位とされ、静電しやへいリング
２に対向する面は平滑で、かつその端面は大きな
半径で丸められている。そして電器が小容量の場
合は中実な金属により構成され、大容量の場合は
もれ磁束によるうず電流損を減少させるために内
部をフエノールレジン積層材等の絶縁物３ｂで形
成し、その表面を金属箔又はカーボンブラツク紙
等の導電材３ｃで覆つてもよい。いずれの場合も
アースリング３は鉄心５内を通る主磁束に対し前
記導電材３ｃにより１ターンを形成しないように
半径方向に導電材３ｃの切れ目を設ける必要があ
る。また、鉄心５に固定されアースリング３を介
して巻線１を支持するフレーム６の巻線１の上下
端部付近の電界が集中する角部等は静電しやへい
リング２によりしやへいされる。そしてこのよう
に構成された巻線１は絶縁ガス７を封入したタン
ク８内に収納される。 Figure 1 is a sectional view of the transformer according to the embodiment of this invention.
Electrostatic shielding rings 2 are arranged at both ends of the winding 1 in the axial direction, and earth rings 3 are provided on both axially earthing sides of the ring and the winding. A supporting insulator 4 that supports the winding 1 is arranged between the two. At least the surface of the grounding ring 3 is made of a conductive material and is brought to earth potential by a lead wire (not shown), and the surface facing the electrostatic shielding ring 2 is smooth, and its end face is rounded with a large radius. If the electric appliance has a small capacity, it is made of solid metal; if the electric appliance has a large capacity, in order to reduce eddy current loss due to leakage magnetic flux, the inside is made of an insulator 3b such as a phenol resin laminated material, and the surface may be covered with a conductive material 3c such as metal foil or carbon black paper. In either case, it is necessary to provide the ground ring 3 with a cut in the conductive material 3c in the radial direction so that the conductive material 3c does not form one turn with respect to the main magnetic flux passing through the iron core 5. In addition, the electrostatic shielding ring 2 protects the corners of the frame 6, which is fixed to the iron core 5 and supports the winding 1 through the earth ring 3, where the electric field near the upper and lower ends of the winding 1 is concentrated. be done. The winding 1 thus constructed is housed in a tank 8 filled with an insulating gas 7.
このように構成することにより、巻線１に負極
性のインパルス電圧を印加した場合のアース側の
電界は距離の近いアースリング３表面上が最も高
くなり、鉄心５及びフレーム６への電界を低く押
えることができる。このため、鉄心及びフレーム
に個々にシールドを付ける必要がなくなる。アー
スリング端部３ａには大きな丸味が付けられるた
めに電界強度を下げることができ、構造上表面粗
さを管理することも容易となる。またこのアース
リング３は構造が簡単なためその端部電界を計算
することが容易となり、信頼性が高くなるととも
に絶縁距離を縮少することができる。そのほかア
ースリング３は支持絶縁物４の固定、位置決めに
も役立つ。なお図示された各部品間の空隙には複
数個所に図示しない間隙片が挿入されている。 With this configuration, when a negative impulse voltage is applied to the winding 1, the electric field on the earth side is highest on the surface of the earth ring 3, which is close to it, and the electric field to the iron core 5 and frame 6 is lowered. It can be held down. This eliminates the need to individually attach shields to the core and frame. Since the end portion 3a of the earth ring has a large roundness, the electric field strength can be lowered, and the surface roughness can be easily controlled due to the structure. Further, since the earth ring 3 has a simple structure, it is easy to calculate the electric field at the end thereof, and the reliability is increased and the insulation distance can be reduced. In addition, the ground ring 3 is useful for fixing and positioning the support insulator 4. Note that gap pieces (not shown) are inserted into the gaps between the illustrated parts at a plurality of locations.
以上の説明で明らかなように、巻線１がその軸
方向両端部にそれぞれ静電しやへいリング２を備
え、絶縁ガス７中に収納される誘導電器におい
て、前記両静電しやへいリング２と前記巻線１を
支持する絶縁支持物４をはさんで対向し、該対向
する面が平滑で、かつその端部が丸められた少な
くとも表面が導電材よりなる大地電位のアースリ
ング３を備えることにより、アース側にいちいち
シールドを設ける必要なしにその電界を緩和し、
対地絶縁寸法の縮小化と信頼性の向上を図ること
ができる。 As is clear from the above explanation, in an induction electric appliance in which the winding 1 is provided with electrostatic shielding rings 2 at both ends in the axial direction and is housed in an insulating gas 7, both electrostatic shielding rings 2 and the winding 1 with an insulating support 4 in between, the opposing surfaces are smooth and the ends thereof are rounded, and at least the surface thereof is made of a conductive material and is at ground potential. By providing this, you can alleviate the electric field without having to install a shield on the ground side,
It is possible to reduce the size of ground insulation and improve reliability.
第１図はこの考案実施例のガス絶縁誘導電器の
断面図である。
１……巻線、２……静電しやへいリング、３…
…アースリング、３ｃ……導電材、４……絶縁支
持物、７……絶縁ガス。
FIG. 1 is a sectional view of a gas insulated induction electric appliance according to an embodiment of this invention. 1... Winding wire, 2... Electrostatic shielding ring, 3...
...Earth ring, 3c...Conductive material, 4...Insulating support, 7...Insulating gas.
Claims (1)
いリングを備え、絶縁ガス中に収納される誘導電
器において、前記両静電しやへいリングに前記巻
線を支持する絶縁支持物をはさんで対向し、該対
向する面が平滑で、かつその端部が丸められた少
なくとも表面が導電材よりなる大地電位のアース
リングが備えられたことを特徴とするガス絶縁誘
導電器。 In an induction electric appliance in which a winding is provided with electrostatic shielding rings at both ends in the axial direction and is housed in an insulating gas, an insulating support for supporting the winding is provided on both electrostatic shielding rings. 1. A gas-insulated induction electric appliance, characterized in that it is provided with earth potential grounding rings which face each other across, have smooth opposing surfaces, rounded ends, and are made of a conductive material at least on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6647182U JPS58170819U (en) | 1982-05-07 | 1982-05-07 | gas insulated induction appliances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6647182U JPS58170819U (en) | 1982-05-07 | 1982-05-07 | gas insulated induction appliances |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58170819U JPS58170819U (en) | 1983-11-15 |
| JPH0129781Y2 true JPH0129781Y2 (en) | 1989-09-11 |
Family
ID=30076339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6647182U Granted JPS58170819U (en) | 1982-05-07 | 1982-05-07 | gas insulated induction appliances |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58170819U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7169738B2 (en) * | 2016-08-24 | 2022-11-11 | 東芝産業機器システム株式会社 | Static induction device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5035643A (en) * | 1973-08-07 | 1975-04-04 | ||
| JPS5083726A (en) * | 1973-11-30 | 1975-07-07 |
-
1982
- 1982-05-07 JP JP6647182U patent/JPS58170819U/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5035643A (en) * | 1973-08-07 | 1975-04-04 | ||
| JPS5083726A (en) * | 1973-11-30 | 1975-07-07 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58170819U (en) | 1983-11-15 |
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