JP2001210143A - Overhead transmission cable - Google Patents
Overhead transmission cableInfo
- Publication number
- JP2001210143A JP2001210143A JP2000018010A JP2000018010A JP2001210143A JP 2001210143 A JP2001210143 A JP 2001210143A JP 2000018010 A JP2000018010 A JP 2000018010A JP 2000018010 A JP2000018010 A JP 2000018010A JP 2001210143 A JP2001210143 A JP 2001210143A
- Authority
- JP
- Japan
- Prior art keywords
- segment
- twisted
- circular cross
- section
- type
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、コロナ騒音を低減
させる架空送電線に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhead power transmission line for reducing corona noise.
【０００２】[0002]
【従来の技術】架空送電線には、円形断面素線のみを多
数本撚合わせた構造のものや、円形断面素線を撚合わせ
その外周に断面扇型のいわゆるセグメント型素線を撚合
わせた構造のものがある。2. Description of the Related Art An overhead transmission line has a structure in which only a plurality of strands having a circular cross section are twisted, or a so-called segment type strand having a fan-shaped cross section is twisted around a strand having a circular cross section. Some have a structure.
【０００３】ところで、架空送電線は、雨などに曝され
て表面に水滴が付着すると、その水滴からコロナが発生
し、コロナ騒音が生じる。このコロナ騒音は、円形断面
素線のみを多数本撚合わせた架空送電線よりも、セグメ
ント型素線を撚合わせた層を備えた架空送電線の方が発
生し易いことがわかっている。その理由は、セグメント
型素線撚合わせ層の方が線と線との接触面積が大きく、
従って、セグメント型素線撚合わせ層より内側に浸入し
た水が排出され難く、この水が少しづつセグメント型素
線の表面に流れ出てくるため、長時間にわたりセグメン
ト型素線の表面に水が付着し、水切れ性が悪いことによ
ると考えられている。[0003] When water droplets adhere to the surface of an overhead transmission line exposed to rain or the like, corona is generated from the water droplets and corona noise is generated. It has been found that this corona noise is more likely to be generated in an overhead transmission line having a layer in which segment-type strands are twisted than in an overhead transmission line in which a large number of circular cross-section strands are twisted. The reason is that the segment type strand twisted layer has a larger contact area between the wire and the wire,
Therefore, it is difficult for the water that has entered the inside of the segment-type strand to be discharged to be discharged, and this water gradually flows out to the surface of the segment-type strand, so that water adheres to the surface of the segment-type strand for a long time. It is believed that the water drainage is poor.
【０００４】図６は従来の架空送電線の一例の断面図で
ある。この架空送電線は、円形断面素線１を撚り合わ
せ、その外周に、セグメント型素線２、３、４を撚合わ
せたものである。セグメント型素線３はセグメント型素
線２、４よりも背の高さが高い断面形状をなし、１８０
°の回転対称の位置に撚合わせられ、２本のセグメント
型素線３が一本のセグメント型素線４を挟むように撚合
せられている。そして、セグメント型素線３、４で生じ
る段差は、風の流れを乱し、風騒音を抑制する。また、
セグメント型素線４の幅を長手方向に変化させ、セグメ
ント型素線３、４間に間隙６を設け、セグメント型素線
撚合せ層よりも内部に浸入した水分を排出させ、水切り
性を良くしている。５はテンションメンバである。FIG. 6 is a sectional view of an example of a conventional overhead transmission line. This overhead transmission line is obtained by twisting a strand wire 1 having a circular cross section, and twisting segment-type strands 2, 3, and 4 around its outer periphery. The segment-shaped wire 3 has a cross-sectional shape that is taller than the segment-shaped wires 2 and 4,
And the two segment-type strands 3 are twisted so as to sandwich one segment-type strand 4. The steps generated in the segment-type strands 3 and 4 disturb the flow of the wind and suppress the wind noise. Also,
The width of the segment-type strands 4 is changed in the longitudinal direction, a gap 6 is provided between the segment-type strands 3 and 4, and the moisture penetrating into the inside from the segment-type strand twisted layer is discharged to improve drainability. are doing. 5 is a tension member.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、上述の
ような間隙６を設けた架空送電線においても、水切り性
は十分でなく、コロナ騒音が発生するという問題があっ
た。However, even the overhead transmission line provided with the gap 6 as described above has a problem that drainage is not sufficient and corona noise is generated.
【０００６】[0006]
【課題を解決するための手段】本発明は上記問題点を解
決すべくなされたもので、セグメント型素線を撚合わせ
たセグメント型素線撚合わせ層を少なくとも１層備えて
なる架空送電線において、少なくとも最も外側に位置す
るセグメント型素線撚合わせ層を構成するセグメント型
素線間に、予め捩じり加工された、または螺旋状に加工
された非円形断面素線を配したことを特徴とするもので
ある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide an overhead transmission line having at least one segment-type strand twisted layer obtained by twisting segment-type strands. Characterized in that a non-circular cross-section wire pre-twisted or processed into a spiral is arranged between the segment-type wires constituting at least the outermost segment-type wire twisted layer. It is assumed that.
【０００７】本発明は、鋭意実験的に検討した結果到達
したもので、上述のように、セグメント型素線撚合わせ
層を構成するセグメント型素線間に、予め捩じり加工さ
れた、または螺旋状に加工された非円形断面素線を配
し、撚り込むと、セグメント型素線と非円形断面素線間
に間隙が生じる。この間隙を通って、セグメント型素線
撚合わせ層より内部に浸入した水が速やかに排出され、
水切り性が向上し、コロナ騒音が抑制される。なお、テ
ンションメンバの外周に撚合わせられる全素線がセグメ
ント型素線であって、撚合わせ層がすべてセグメント型
素線撚合わせ層であってもよいことはいうまでもない。
また、テンションメンバの外周に撚合わせられる全素線
が円形断面素線であって、撚合わせ層が全て円形断面素
線撚合わせ層の場合においても、少なくとも１層の円形
断面素線撚合わせ層を構成する円形断面素線間に、予め
捩じり加工された、または螺旋状に加工された非円形断
面素線を配しても、水切り性が向上する。The present invention has been accomplished as a result of intensive experimentation, and as described above, a twisting process has been performed in advance between the segment-type wires constituting the segment-type strand twisted layer, or When a spirally processed non-circular cross-section element wire is arranged and twisted, a gap is generated between the segment-type element wire and the non-circular cross-section element wire. Through this gap, the water that has entered the inside from the segment type strand twisted layer is quickly discharged,
Drainability is improved, and corona noise is suppressed. Needless to say, all the strands twisted around the outer periphery of the tension member may be segment-type strands, and all the twisted layers may be segment-type strand twisted layers.
Further, even when all the strands twisted around the outer periphery of the tension member are circular cross-section strands and all the twisted layers are circular cross-section strand twisted layers, at least one circular cross-section strand twisted layer is also provided. Even if a non-circular cross-section element wire that has been previously twisted or processed into a spiral shape is arranged between the circular cross-section element wires that constitute the above, the drainage property is improved.
【０００８】また、腐食性の高い環境ルートを通る架空
送電線では、従来構造の電線では水切れ性が悪いため、
電線内部に腐食生成物が溜まりやすく、長年の間に、こ
れら内部腐食生成物が固化し、湿潤膨張を繰り返し、電
線の腐食劣化を早め、さらに電線上に取り付けられたダ
ンパやスぺーサなどの把持部を破壊する事例もあった。
本発明では、水切れ性が良好なため、こうした不具合を
確実に解消できるという利点もある。In addition, in the case of an overhead transmission line passing through a highly corrosive environmental route, the conventional structure has poor water drainage,
Corrosion products tend to accumulate inside the wire, and over the years, these internal corrosion products solidify, repeatedly wet and expand, speeding up the corrosion deterioration of the wire, and further improving the performance of dampers and spacers installed on the wire. In some cases, the grip was destroyed.
In the present invention, there is also an advantage that such disadvantages can be surely solved because the water drainage property is good.
【０００９】[0009]
【発明の実施の形態】以下、図面に基づいて本発明の実
施の形態を詳細に説明する。図１は、本発明にかかる架
空送電線の一実施形態の断面図である。図１は、図６に
関して説明した部分と同部分は同符号で指示してある。
本実施形態が図６に示した従来例と異なる特徴的なこと
は、最外層として設けられたセグメント型素線撚合わせ
層のセグメント型素線２、３間に非円形断面素線７が撚
り込まれていることである。この非円形断面素線７は、
図２に示すように、外周に３本の溝７ａが等間隔に、か
つ長手方向に螺旋状に形成されたものである。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a sectional view of one embodiment of an overhead transmission line according to the present invention. In FIG. 1, the same parts as those described with reference to FIG. 6 are indicated by the same reference numerals.
The present embodiment is different from the conventional example shown in FIG. 6 in that the non-circular cross-section wire 7 is twisted between the segment-type wires 2 and 3 of the segment-type wire twisted layer provided as the outermost layer. It is embedded. This non-circular cross-section wire 7 is
As shown in FIG. 2, three grooves 7a are formed on the outer periphery at equal intervals and spirally in the longitudinal direction.
【００１０】本実施形態では、非円形断面素線７とセグ
メント型素線２間、および非円形断面素線７とセグメン
ト型素線３の間に、溝７ａによる間隙８が生じる。この
間隙８を通って、内部に浸入した水は速やかに排出さ
れ、水切り性が向上し、コロナ騒音が抑制される。In this embodiment, a gap 8 is formed between the non-circular cross-section element wire 7 and the segment-type element wire 2 and between the non-circular cross-section element wire 7 and the segment-type element wire 3 by the groove 7a. The water that has entered inside through the gap 8 is quickly discharged, the drainage property is improved, and corona noise is suppressed.
【００１１】本発明において、セグメント型素線と非円
形断面素線の配置、および非円形断面素線の形状は上記
実施形態に限定されることはない。また、テンションメ
ンバの外周に撚合わせられる全素線がセグメント型素線
であって、撚合わせ層がすべてセグメント型素線撚合わ
せ層であっても、少なくとも最外層のセグメント型素線
間に、予め捩じり加工された、または螺旋状に加工され
た非円形断面素線を配してもよい。さらに、テンション
メンバの外周に撚合わせられる全素線が円形断面素線で
あって、撚合わせ層が全て円形断面素線撚合わせ層の場
合においても、少なくとも１層の円形断面素線撚合わせ
層の円形断面素線間に、予め捩じり加工された、または
螺旋状に加工された非円形断面素線を配してもよい。な
お、各円形断面素線撚合わせ層の円形断面素線間に非円
形断面素線を配すると、水切り性は一段と向上するので
好ましい。In the present invention, the arrangement of the segment-type strands and the non-circular cross-section strands and the shape of the non-circular cross-section strands are not limited to the above embodiment. Further, all the strands twisted around the outer periphery of the tension member are segment-type strands, and even if the twisted layers are all segment-type strand twisted layers, at least between the outermost segment-type strands, A pre-twisted or spirally processed non-circular cross-section element wire may be provided. Furthermore, even when all the strands twisted around the outer periphery of the tension member are circular cross-section strands and all the twisted layers are circular cross-section strand twisted layers, at least one circular cross-section strand twisted layer is provided. A non-circular cross-section wire that has been previously twisted or spirally formed may be arranged between the circular cross-section wires. In addition, it is preferable to arrange a non-circular cross-section wire between the circular cross-section wires of each circular cross-section wire twisted layer because the drainage property is further improved.
【００１２】図３は他の実施形態の断面図である。本実
施形態は、円形断面素線１１を撚合わせた中心部の外周
にセグメント型素線１２からなる撚合わせ層を設け、さ
らにその外周に円形断面素線１３からなる層を設けたも
のである。そして、セグメント型素線１２間に、楕円断
面形状が捩じれた非円形断面素線１４を３本、等間隔に
撚合せたものである。FIG. 3 is a sectional view of another embodiment. In the present embodiment, a twisted layer made of a segment-shaped element wire 12 is provided on the outer periphery of a center portion where the circular section wires 11 are twisted, and a layer made of a circular section wire 13 is provided on the outer periphery. . Then, three non-circular cross-section wires 14 having an elliptical cross-sectional shape twisted at equal intervals between the segment-shaped wires 12.
【００１３】図４は、他の実施形態の断面図である。本
実施形態は、テンションメンバ５の外周にセグメント型
素線２１からなる撚合わせ層を２層設けたものである。
そして、各層のセグメント型素線２１間に、３角断面形
状が捩じられた非円形断面素線２２を撚合せたものであ
る。なお、外側のセグメント型素線２１からなる撚合わ
せ層には、風騒音を防ぐための凸条部２３ａを有するセ
グメント型素線２３が撚込まれている。FIG. 4 is a sectional view of another embodiment. In the present embodiment, two twisted layers composed of the segment-shaped wires 21 are provided on the outer periphery of the tension member 5.
Then, a non-circular cross-section wire 22 whose triangular cross-section is twisted is twisted between the segment-shaped wires 21 of each layer. In addition, a segment-type wire 23 having a ridge 23a for preventing wind noise is twisted in the twisted layer formed of the outer segment-type wires 21.
【００１４】図５は、さらなる他の実施形態の断面図で
ある。本実施形態は、テンションメンバ５の外周にセグ
メント型素線３１を撚合わせた層を３層設けたものであ
る。そして、各層のセグメント型素線３１間に、四角断
面形状が捩じられた非円形断面素線３２を撚合せたもの
である。なお、外側のセグメント型素線３１からなる撚
合わせ層には、前記実施形態と同様に、風騒音を防ぐた
めの凸条部３３ａを有するセグメント型素線３３が撚込
まれている。FIG. 5 is a sectional view of still another embodiment. In the present embodiment, three layers of twisted segment-type wires 31 are provided on the outer periphery of the tension member 5. Then, a non-circular cross-section element wire 32 whose square cross-section shape is twisted is twisted between the segment-type element wires 31 of each layer. Note that, similarly to the above-described embodiment, a segment-type element wire 33 having a ridge 33a for preventing wind noise is twisted into the twisted layer including the outer segment-type element wires 31.
【００１５】[0015]
【発明の効果】以上説明したように本発明によれば、水
切り性が向上し、コロナ騒音が抑制されるという優れた
効果がある。As described above, according to the present invention, there is an excellent effect that drainage is improved and corona noise is suppressed.
【図１】本発明に係る架空送電線の一実施形態の断面図
である。FIG. 1 is a cross-sectional view of an embodiment of an overhead transmission line according to the present invention.
【図２】上記実施形態に用いた非円形断面素線の斜視図
である。FIG. 2 is a perspective view of a non-circular cross-section element wire used in the embodiment.
【図３】他の実施形態の断面図である。FIG. 3 is a sectional view of another embodiment.
【図４】他の実施形態の断面図である。FIG. 4 is a sectional view of another embodiment.
【図５】さらなる他の実施形態の断面図である。FIG. 5 is a cross-sectional view of still another embodiment.
【図６】従来の架空送電線の断面図である。FIG. 6 is a sectional view of a conventional overhead power transmission line.
１、１１、１３ 円形断面素線 ２、３、４、１２、２１、２３、３１、３３セグメント
型素線 ５ テンションメンバ ６、８ 間隙 ７、１４、２２、３２ 非円形断面素線 ７ａ 溝 ２３ａ、３３ａ 凸条部1, 11, 13 Circular section strand 2, 3, 4, 12, 21, 23, 31, 33 segment type strand 5 Tension member 6, 8 Gap 7, 14, 22, 32 Non-circular section strand 7a Groove 23a , 33a ridge
Claims (3)
ト型素線撚合わせ層を少なくとも１層備えてなる架空送
電線において、少なくとも最も外側に位置するセグメン
ト型素線撚合わせ層を構成するセグメント型素線間に、
予め捩じり加工された、または螺旋状に加工された非円
形断面素線を配したことを特徴とする架空送電線。1. An overhead transmission line comprising at least one segment-type strand stranded layer obtained by twisting segment-type strands, wherein the segment type constituting at least the outermost segment-type strand twisted layer is provided. Between the strands,
An overhead power transmission line, comprising a non-circular cross-section element wire that has been previously twisted or spirally processed.
型素線を撚合わせたセグメント型素線撚合わせ層のみを
備えてなる架空送電線において、少なくとも最外層のセ
グメント型素線間に、予め捩じり加工された、または螺
旋状に加工された非円形断面素線を配したことを特徴と
する架空送電線。2. An overhead transmission line comprising only a segment-type strand twisted layer in which segment-type strands are twisted outside a tension member, wherein at least the outermost layer of the segment-type strand is twisted in advance. An overhead transmission line, wherein a non-circular cross-section element wire processed or spirally formed is arranged.
線を撚合わせた円形断面素線撚合わせ層のみを備えてな
る架空送電線において、少なくとも１層の円形断面素線
撚合わせ層の円形断面素線間に、予め捩じり加工され
た、または螺旋状に加工された非円形断面素線を配した
ことを特徴とする架空送電線。3. An overhead transmission line comprising only a circular cross-section wire twisted layer obtained by twisting a circular cross-section wire outside a tension member, wherein at least one circular cross-section wire twisted layer has a circular cross section. An overhead power transmission line, wherein a non-circular cross-section wire pre-twisted or spirally formed is arranged between the wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000018010A JP3857852B2 (en) | 2000-01-25 | 2000-01-25 | Overhead power line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000018010A JP3857852B2 (en) | 2000-01-25 | 2000-01-25 | Overhead power line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001210143A true JP2001210143A (en) | 2001-08-03 |
| JP3857852B2 JP3857852B2 (en) | 2006-12-13 |
Family
ID=18544917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000018010A Expired - Fee Related JP3857852B2 (en) | 2000-01-25 | 2000-01-25 | Overhead power line |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3857852B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015211024A (en) * | 2014-04-30 | 2015-11-24 | 株式会社ジェイ・パワーシステムズ | Overhead transmission line |
| CN105869785A (en) * | 2016-06-15 | 2016-08-17 | 济南瑞通铁路电务有限责任公司 | Mold for stranding overhead conductor or overhead insulated wire cable conductor |
-
2000
- 2000-01-25 JP JP2000018010A patent/JP3857852B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015211024A (en) * | 2014-04-30 | 2015-11-24 | 株式会社ジェイ・パワーシステムズ | Overhead transmission line |
| CN105869785A (en) * | 2016-06-15 | 2016-08-17 | 济南瑞通铁路电务有限责任公司 | Mold for stranding overhead conductor or overhead insulated wire cable conductor |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3857852B2 (en) | 2006-12-13 |
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