JPH0126006Y2 - - Google Patents
Info
- Publication number
- JPH0126006Y2 JPH0126006Y2 JP6673981U JP6673981U JPH0126006Y2 JP H0126006 Y2 JPH0126006 Y2 JP H0126006Y2 JP 6673981 U JP6673981 U JP 6673981U JP 6673981 U JP6673981 U JP 6673981U JP H0126006 Y2 JPH0126006 Y2 JP H0126006Y2
- Authority
- JP
- Japan
- Prior art keywords
- layer
- tape winding
- kraft paper
- winding layer
- oil
- 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 28
- 239000002655 kraft paper Substances 0.000 claims description 27
- 229920003002 synthetic resin Polymers 0.000 claims description 8
- 239000000057 synthetic resin Substances 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000000123 paper Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000004812 Fluorinated ethylene propylene Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229920009441 perflouroethylene propylene Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
Description
【考案の詳細な説明】
本考案は、油入電力ケーブルの改良に関するも
のである。[Detailed Description of the Invention] The present invention relates to an improvement of an oil-immersed power cable.
従来のクラフト紙のみを油浸紙として用いた油
入電力ケーブルでは、絶縁体の誘電正接及び誘電
率をそれぞれ0.1％、3.0以下に下げることができ
ず誘電体損失が大きい。この誘電体損失は使用電
圧の上昇に伴なつて急激に増加し、従来のクラフ
ト紙のみの油浸紙を500KV級を超える油入電力
ケーブルに使用することは困難である。従つて、
使用電圧に最適な誘電正接及び誘電率を広範囲に
設定可能な絶縁体構成が必要である。これに対
し、合成樹脂フイルムとクラフト紙とのラミネー
ト紙が開発されているが、その厚さ構成による誘
電正接及び誘電率の設定範囲はごく限られた狭い
範囲となる欠点がある。 In conventional oil-immersed power cables that use only kraft paper as oil-immersed paper, the dielectric loss tangent and dielectric constant of the insulator cannot be lowered to below 0.1% and 3.0, respectively, resulting in large dielectric loss. This dielectric loss increases rapidly as the operating voltage increases, making it difficult to use conventional oil-impregnated paper, which is made only of kraft paper, for oil-impregnated power cables exceeding 500KV class. Therefore,
There is a need for an insulator configuration that allows the optimum dielectric loss tangent and dielectric constant to be set over a wide range for the voltage used. In contrast, a laminated paper made of a synthetic resin film and kraft paper has been developed, but it has the disadvantage that the setting range of the dielectric loss tangent and dielectric constant is very limited and narrow depending on the thickness structure.
本考案の目的は、上記欠点を解消し、最適な誘
電特性を有する油入電力ケーブルを提供すること
にある。 An object of the present invention is to eliminate the above-mentioned drawbacks and provide an oil-filled power cable with optimal dielectric properties.
本考案の油入電力ケーブルは、導体上に絶縁
層、遮蔽層、金属被覆、防食層等が被覆され、上
記絶縁層に絶縁油を含浸して成り、上記絶縁層
を、合成樹脂フイルムを含むラミネートテープ巻
回層と、クラフト紙テープ巻回層とで、該ラミネ
ートテープ巻回層を内側にかつ、クラフト紙テー
プ巻回層を外側にすることにより構成したもので
ある。 The oil-filled power cable of the present invention has a conductor coated with an insulating layer, a shielding layer, a metal coating, an anti-corrosion layer, etc., the insulating layer is impregnated with insulating oil, and the insulating layer includes a synthetic resin film. It is composed of a laminate tape winding layer and a kraft paper tape winding layer, with the laminate tape winding layer on the inside and the kraft paper tape winding layer on the outside.
以下本考案の油入電力ケーブルの一実施例を図
面により説明する。１は導体、２は遮蔽層で導体
１の外周に被覆され、遮蔽層２の外側に絶縁層３
が設けられている。絶縁層３は合成樹脂フイルム
とクラフト紙とのラミネートテープを巻回した油
浸絶縁層のラミネートテープ巻回層３Ａと、クラ
フト紙テープを巻回した油浸絶縁層のクラフト紙
テープ巻回層３Ｂとを内外層に配置して形成され
ている。クラフト紙テープ巻回層３Ｂの外周に遮
蔽層６、金属被覆４、防食層５の順に被覆されて
いる。そして、ラミネートテープ巻回層３Ａとし
ては、例えば４弗化エチレン、６弗化プロピレン
共重合体フイルムの両面にクラフト紙を熱融着し
た弗化エチレンプロピレンラミネート紙を用いて
いる。このとき、ケーブルとしての誘電率ε′rお
よび誘電正接tanδ′は(1)式及び(2)式の通りとなる。 An embodiment of the oil-filled power cable of the present invention will be described below with reference to the drawings. 1 is a conductor, 2 is a shielding layer that covers the outer periphery of the conductor 1, and an insulating layer 3 on the outside of the shielding layer 2.
is provided. The insulating layer 3 includes a laminate tape-wound layer 3A, which is an oil-immersed insulating layer in which a laminate tape of synthetic resin film and kraft paper is wound, and a kraft paper tape-wound layer 3B, which is an oil-immersed insulating layer in which a kraft paper tape is wound. It is arranged and formed in the inner and outer layers. The outer periphery of the kraft paper tape winding layer 3B is coated with a shielding layer 6, a metal coating 4, and an anticorrosion layer 5 in this order. As the laminate tape winding layer 3A, for example, fluorinated ethylene propylene laminated paper is used, which is obtained by heat-sealing kraft paper on both sides of a tetrafluorinated ethylene and hexafluorinated propylene copolymer film. At this time, the dielectric constant ε′r and dielectric loss tangent tan δ′ of the cable are as shown in equations (1) and (2).
ε′r＝lnr3／r1／１／εr1lnr2／r1＋１／εr2lnr3／r
2…(1)
tanδ′＝εr2tanδ1lnr2／r1＋εr1tanδ2lnr3／r2／
εr1lnr3／r2＋εr2lnr2／r1…(2)
但し、
εr1：ラミネートテープの誘電率、
εr2：クラフト紙テープの誘電率
tanδ1：ラミネートテープの誘電正接、
tanδ2：クラフト紙テープの誘電正接、
従つてラミネートテープ巻回層３Ａとクラフト
紙テープ巻回層３Ｂの厚さを選定することにより
ラミネートテープ巻回層３Ａ単独のケーブル誘電
特性と、クラフト紙テープ巻回層３Ｂ単独のケー
ブル誘電特性の間の誘電特性のケーブルを実現す
ることができる。ε′r＝lnr 3 /r 1 /1/εr 1 lnr 2 /r 1 +1/εr 2 lnr 3 /r
2 …(1) tanδ′＝εr 2 tanδ 1 lnr 2 /r 1 +εr 1 tanδ 2 lnr 3 /r 2 /
εr 1 lnr 3 /r 2 +εr 2 lnr 2 /r 1 ...(2) However, εr 1 : Dielectric constant of laminate tape, εr 2 : Dielectric constant of kraft paper tape tanδ 1 : Dielectric loss tangent of laminate tape, tanδ 2 : Kraft By selecting the dielectric loss tangent of the paper tape, and therefore the thickness of the laminate tape winding layer 3A and the kraft paper tape winding layer 3B, the cable dielectric properties of the laminate tape winding layer 3A alone and the cable of the kraft paper tape winding layer 3B alone can be determined. Cables with dielectric properties between dielectric properties can be realized.
さらに複数の材質の異なる合成樹脂フイルムの
ラミネートテープ巻回層と、クラフト紙テープ巻
回層により構成する電力ケーブルでもそれぞれの
巻回層の誘電特性と厚さとを選定することにより
任意の適切な誘電特性の電力ケーブルを得ること
ができる。 Furthermore, even in the case of power cables composed of a laminated tape winding layer of synthetic resin film made of different materials and a kraft paper tape winding layer, arbitrary dielectric properties can be achieved by selecting the dielectric properties and thickness of each winding layer. You can get a power cable.
このように本実施例の油入電力ケーブルは、絶
縁層を、合成樹脂フイルム及びクラフト紙のラミ
ネートテープ巻回層と、クラフト紙テープ巻回層
とにより構成しラミネートテープ巻回層とクラフ
ト紙テープ巻回層の厚さ比率を調整することによ
り所定の誘電特性を得ることができる。 In this way, the oil-filled power cable of this embodiment has an insulating layer composed of a laminate tape winding layer of synthetic resin film and kraft paper, and a kraft paper tape winding layer. By adjusting the layer thickness ratio, predetermined dielectric properties can be obtained.
また本考案の油入り電力ケーブルは、クラフト
紙テープの巻回層を有するものであるが、そのク
ラフト紙テープ巻回層は絶縁層における外側に位
置してその内側にプラスチツクフイルムとクラフ
ト紙とのラミネートテープ層を有しており、該プ
ラスチツクフイルムは、絶縁油中に欠陥点がある
場合に発生する破壊ストリーマに対しクラフト紙
よりもバリアー効果が大きく、特に高電界となる
導体側にその様なバリアー効果大なるプラスチツ
クフイルムが存在することにより、絶縁破壊強度
を高度に維持することができ、長期間の課通電に
対し安定した絶縁耐力を維持することができる。 Further, the oil-filled power cable of the present invention has a winding layer of kraft paper tape, and the kraft paper tape winding layer is located on the outside of the insulating layer, and the inside thereof is a laminate tape of plastic film and kraft paper. The plastic film has a greater barrier effect than kraft paper against destructive streamers that occur when there are defects in the insulating oil, and this barrier effect is particularly strong on the conductor side, where there is a high electric field. Due to the presence of the large plastic film, dielectric breakdown strength can be maintained at a high level, and stable dielectric strength can be maintained against long-term energization.
従つて本考案によれば、クラフト紙テープ巻回
層と合成樹脂フイルムを含むラミネートテープ巻
回層との複合絶縁方式とすることで最適な誘電特
性の油入り電力ケーブルを提供し、かつまたクラ
フト紙を使用したとしても絶縁破壊強度を高く維
持して長期間安定した特性のものにできる等実用
上の効果はけだし大きい。 Therefore, according to the present invention, an oil-filled power cable with optimal dielectric properties is provided by using a composite insulation system of a kraft paper tape winding layer and a laminated tape winding layer containing a synthetic resin film, and also a kraft paper tape winding layer. Even if it is used, the practical effects are significant, such as maintaining high dielectric breakdown strength and providing stable characteristics for a long period of time.
図は本考案の油入電力ケーブルの一実施例の断
面図である。
１：導体、２，６：遮蔽層、３：絶縁層、３
Ａ：ラミネートテープ巻回層、３Ｂ：クラフト紙
テープ巻回層、４：金属被覆、５：防食層。
The figure is a sectional view of an embodiment of the oil-filled power cable of the present invention. 1: Conductor, 2, 6: Shielding layer, 3: Insulating layer, 3
A: Laminated tape winding layer, 3B: Kraft paper tape winding layer, 4: Metal coating, 5: Anticorrosion layer.
Claims (1)
等が被覆され、上記絶縁層に絶縁油を含浸して
なる電力ケーブルにおいて、上記絶縁層が、合
成樹脂フイルムを含むラミネートテープ巻回層
と、クラフト紙テープ巻回層とを、該ラミネー
トテープ巻回層を内側に、かつクラフト紙テー
プ巻回層を外側にして、構成されたことを特徴
とする油入電力ケーブル。 (2) 上記絶縁層を材質が異なる複数の合成樹脂フ
イルムのラミネートテープ巻回層及びクラフト
紙テープ巻回層により構成した実用新案登録請
求の範囲第１項記載の油入電力ケーブル。[Claims for Utility Model Registration] (1) A power cable in which a conductor is coated with an insulating layer, a shielding layer, a metal coating, an anti-corrosion layer, etc., and the insulating layer is impregnated with insulating oil, wherein the insulating layer is An oil characterized by comprising a laminate tape winding layer containing a synthetic resin film and a kraft paper tape winding layer, with the laminate tape winding layer on the inside and the kraft paper tape winding layer on the outside. Incoming power cable. (2) The oil-filled power cable according to claim 1, wherein the insulating layer is constituted by a laminate tape winding layer of a plurality of synthetic resin films of different materials and a kraft paper tape winding layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6673981U JPH0126006Y2 (en) | 1981-05-11 | 1981-05-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6673981U JPH0126006Y2 (en) | 1981-05-11 | 1981-05-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57179215U JPS57179215U (en) | 1982-11-13 |
| JPH0126006Y2 true JPH0126006Y2 (en) | 1989-08-03 |
Family
ID=29862764
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6673981U Expired JPH0126006Y2 (en) | 1981-05-11 | 1981-05-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0126006Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000853A1 (en) * | 1992-06-26 | 1994-01-06 | Sumitomo Electric Industries, Ltd. | Direct current oil-filled cable |
-
1981
- 1981-05-11 JP JP6673981U patent/JPH0126006Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994000853A1 (en) * | 1992-06-26 | 1994-01-06 | Sumitomo Electric Industries, Ltd. | Direct current oil-filled cable |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57179215U (en) | 1982-11-13 |
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