JPH027125B2 - - Google Patents
Info
- Publication number
- JPH027125B2 JPH027125B2 JP14913784A JP14913784A JPH027125B2 JP H027125 B2 JPH027125 B2 JP H027125B2 JP 14913784 A JP14913784 A JP 14913784A JP 14913784 A JP14913784 A JP 14913784A JP H027125 B2 JPH027125 B2 JP H027125B2
- Authority
- JP
- Japan
- Prior art keywords
- power cable
- cable conductor
- wire
- aluminum
- power
- 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
- 239000004020 conductor Substances 0.000 claims description 27
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims description 7
- 239000010407 anodic oxide Substances 0.000 claims description 6
- 239000010419 fine particle Substances 0.000 claims description 5
- ITRNXVSDJBHYNJ-UHFFFAOYSA-N tungsten disulfide Chemical compound S=[W]=S ITRNXVSDJBHYNJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000002500 effect on skin Effects 0.000 description 9
- 230000005540 biological transmission Effects 0.000 description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- BWGNESOTFCXPMA-UHFFFAOYSA-N Dihydrogen disulfide Chemical compound SS BWGNESOTFCXPMA-UHFFFAOYSA-N 0.000 description 2
- 239000002612 dispersion medium Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004070 electrodeposition Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Non-Insulated Conductors (AREA)
- Insulated Conductors (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、送電に用いられる電力ケーブルに
係り、特にアルミニウム素線よりなる電力ケーブ
ル導体に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a power cable used for power transmission, and particularly to a power cable conductor made of aluminum wire.
アルミニウムは軽量で良導電体であり、かつ安
価で価格の変動が少ないことから、近年、銅に代
わる電力ケーブルの導体材料として注目されてい
る。
In recent years, aluminum has attracted attention as a conductive material for power cables in place of copper because it is lightweight, has good electrical conductivity, is inexpensive, and has little fluctuation in price.
アルミニウムの導電率は、銅の約60％なので、
銅を用いた電力ケーブルと送電容量を等価にしよ
うとすると、その径は銅を用いたものに比べ、約
1.28倍となる。そこで、径を変えずに送電容量を
大きくするために、通常第２図に示すように円形
に形成されている素線１の断面形状を、略扇形に
成形して、各素線の間隔を密とし、径を変えずに
ケーブルの導体の断面積を大きくしている。これ
によつて送電容量は増加し、銅を用いた同一径の
電力ケーブルと同じように扱うことができる。第
３図は、このようなアルミニウム素線よりなる電
力ケーブル導体の構成を示す断面図であり、電力
ケーブル導体２は、断面略扇形のアルミニウム素
線３，３が鋼心４の回りに２層に撚り合わされて
形成されたもので、その外周には絶縁材５が被覆
されている。 The conductivity of aluminum is about 60% that of copper, so
If we try to make the power transmission capacity equivalent to that of a power cable using copper, its diameter will be approximately
It becomes 1.28 times. Therefore, in order to increase the power transmission capacity without changing the diameter, the cross-sectional shape of the wire 1, which is normally formed in a circle, is shaped into a substantially fan shape as shown in Figure 2, and the intervals between each wire are reduced. The cross-sectional area of the cable conductor is increased without changing the diameter. This increases power transmission capacity and allows it to be treated like a copper power cable of the same diameter. FIG. 3 is a cross-sectional view showing the structure of a power cable conductor made of such an aluminum wire, and the power cable conductor 2 is composed of two layers of aluminum wires 3, 3 each having a substantially fan-shaped cross section surrounding a steel core 4. The outer periphery is coated with an insulating material 5.
ところで、電力ケーブル導体２に交流電流が流
れる場合、表皮効果が生じ、この表皮効果は、交
流電流の周波数が高いほど、また導体の断面積が
大きいほど、大きくなる。したがつて、第３図に
示す電力ケーブル導体２は、円形断面の素線によ
つて形成された同一径の電力ケーブル導体に比
べ、断面積が増加したことによつて表皮効果の影
響を受け易くなつている。さらに、各素線３，３
…が面接触しているために、各素線間の接触抵抗
が下がり、これが電力ケーブル導体２に生じる表
皮効果を促進している。この結果、円形断面の素
線よりなる同一径の電力ケーブル導体に比べ、電
力ケーブル導体２の交流抵抗は大きくなり、送電
途中における電圧降下の原因となつていた。 By the way, when an alternating current flows through the power cable conductor 2, a skin effect occurs, and this skin effect becomes larger as the frequency of the alternating current is higher and the cross-sectional area of the conductor is larger. Therefore, the power cable conductor 2 shown in FIG. 3 is susceptible to the skin effect due to its increased cross-sectional area compared to a power cable conductor of the same diameter formed from wire with a circular cross section. It's getting easier. Furthermore, each strand 3,3
... are in surface contact, the contact resistance between each strand is reduced, and this promotes the skin effect that occurs in the power cable conductor 2. As a result, the alternating current resistance of the power cable conductor 2 becomes larger than that of a power cable conductor of the same diameter made of wire with a circular cross section, causing a voltage drop during power transmission.
また、電力ケーブルには、架設時等において、
様々な応力が作用し、これによつて内部の素線
は、互いに摺動・摩耗して、損傷を起こすことが
ある。特に、上述した断面扇形の素線２は、円形
断面の素線に比べ、応力が均等に作用しないため
に、曲げに方向性が生じ、したがつて素線２の特
定部分のみが摺動し、損傷を受け易く、耐久性が
悪いという欠点があつた。 In addition, when installing power cables,
Various stresses act on the wires, which may cause the internal wires to slide and wear against each other, causing damage. In particular, in the above-mentioned wire 2 with a fan-shaped cross section, stress does not act evenly on the wire 2 with a circular cross section, so the bending becomes directional, and therefore only a specific portion of the wire 2 slides. However, it has the drawbacks of being easily damaged and having poor durability.
〔発明の目的〕
この発明は上記事情に鑑み、表皮効果を低減さ
せ交流抵抗を小さくすると共に、摩耗による素線
の損傷を軽減することができる電力ケーブル導体
を提供することを目的とする。[Object of the Invention] In view of the above-mentioned circumstances, an object of the present invention is to provide a power cable conductor that can reduce skin effect, reduce AC resistance, and reduce damage to strands due to wear.
上記目的を達成するために、この発明は、表面
に陽極酸化皮膜が形成され、かつ前記陽極酸化皮
膜の表面微細孔に、二硫化モリブデンまたは二硫
化タングステンの微細粒子が含浸されたアルミニ
ウム素線を用いて電力ケーブル導体を形成したこ
とを特徴とする。
In order to achieve the above object, the present invention provides an aluminum wire having an anodic oxide film formed on its surface and impregnated with fine particles of molybdenum disulfide or tungsten disulfide in the surface micropores of the anodic oxide film. It is characterized in that it is used to form a power cable conductor.
以下、図面を参照して、この発明の実施例につ
いて説明する。
Embodiments of the present invention will be described below with reference to the drawings.
第１図は、この発明の一実施例による電力ケー
ブル導体の構成を示す斜視図であり、この電力ケ
ーブル導体１０が第３図に示す従来の電力ケーブ
ル導体２と異なる点は、鋼心４に、２層に撚り合
わされたアルミニウム素線１１，１１…の各々
に、陽極酸化皮膜、すなわち、アルマイト皮膜が
形成され、かつこのアルマイト皮膜の表面微細孔
に、二硫化モリブデンの微細粒子が含浸されてい
ることにある。このアルマイト皮膜の形成および
二硫化モリブデンの含浸は、特公昭56−24039号
公報に示されている方法による。すなわち、まず
従来のアルミニウム素線２の表面に陽極酸化処理
を施して、アルマイト皮膜を形成する。この場
合、アルマイト皮膜の膜厚は、ケーブルの使用電
圧に応じて決定する。例えば、1000／√３KVで
使用される場合には、少なくとも0.1μｍ以上であ
ることが望ましい。次いで、このアルマイト皮膜
を硝酸水溶液に浸漬して活性化処理を施した後、
二硫化モリブデンの微細粒子を分散媒に分散させ
た分散浴中において、前記分散媒に超音波振動を
与えつつ、アルマイト皮膜に電気泳動電着を施
し、これによりアルマイト皮膜の表面微細孔に二
硫化モリブデンの微細粒子を含浸させる。 FIG. 1 is a perspective view showing the configuration of a power cable conductor according to an embodiment of the present invention. This power cable conductor 10 is different from the conventional power cable conductor 2 shown in FIG. , an anodized film, that is, an alumite film, is formed on each of the aluminum wires 11, 11 . It's in being. Formation of this alumite film and impregnation with molybdenum disulfide are carried out by the method disclosed in Japanese Patent Publication No. 56-24039. That is, first, the surface of the conventional aluminum wire 2 is anodized to form an alumite film. In this case, the thickness of the alumite film is determined depending on the voltage used by the cable. For example, when used at 1000/√3KV, it is desirable that the thickness is at least 0.1 μm. Next, after immersing this alumite film in a nitric acid aqueous solution and performing an activation treatment,
In a dispersion bath in which fine particles of molybdenum disulfide are dispersed in a dispersion medium, electrophoretic electrodeposition is applied to the alumite film while applying ultrasonic vibration to the dispersion medium, thereby forming disulfide disulfide into the fine pores on the surface of the alumite film. Impregnated with fine particles of molybdenum.
このようにして形成されたアルマイト皮膜によ
つて各アルマイト素線１１，１１…が絶縁され、
電力ケーブル導体１０に生じる表皮効果を低減さ
せることができる。また、アルマイト皮膜の表面
微細孔に含浸された二硫化モリブデンは、摩擦係
数が小さく固体潤滑剤の役目を果たすことから、
隣接するアルミニウム素線１１，１１…間の摩耗
を減少させることができる。 Each alumite wire 11, 11... is insulated by the alumite film formed in this way,
The skin effect occurring in the power cable conductor 10 can be reduced. In addition, molybdenum disulfide impregnated into the surface micropores of the alumite film has a small coefficient of friction and acts as a solid lubricant.
Wear between adjacent aluminum wires 11, 11, . . . can be reduced.
なお、本発明は、扇形断面を有するアルミニウ
ム素線に限らず、第２図に示すような従来の円形
断面のアルミニウム素線にも適用できることは勿
論である。 The present invention is of course applicable not only to aluminum wires having a fan-shaped cross section but also to conventional aluminum wires having a circular cross section as shown in FIG.
また、固体潤滑剤として、二硫化モリブデンの
代わりに二硫化タングステンを用いた場合におい
ても同様の効果を得ることができる。 Furthermore, similar effects can be obtained when tungsten disulfide is used instead of molybdenum disulfide as the solid lubricant.
また、表皮効果の低減のみに着目すれば、電力
ケーブル導体を形成する全てのアルミニウム素線
に、アルマイト皮膜を形成する必要はない。例え
ば、アルマイト皮膜が形成された素線が一層おき
に撚り合わされていれば表皮効果を低減すること
ができる。 Further, if attention is focused only on reducing the skin effect, it is not necessary to form an alumite film on all the aluminum wires forming the power cable conductor. For example, if the wires on which the alumite film is formed are twisted every other layer, the skin effect can be reduced.
以上説明したようにこの発明は、表面に陽極酸
化皮膜が形成され、かつ前記陽極酸化皮膜の表面
微細孔に、二硫化モリブデンまたは二硫化タング
ステンの微細粒子が含浸されたアルミニウム素線
を用いて電力ケーブル導体を形成したので、以下
の効果を奏することができる。
As explained above, the present invention uses an aluminum wire having an anodic oxide film formed on its surface and impregnated with fine particles of molybdenum disulfide or tungsten disulfide in the surface micropores of the anodic oxide film. Since the cable conductor is formed, the following effects can be achieved.
各素線を絶縁することによつて、電力ケーブ
ルに生じる表皮効果を低減させることができ
る。この結果、電力ケーブル導体の交流抵抗が
小さくなることによつて、送電容量を増量する
ことができ、送電途中における電圧降下を低減
させることができる。 By insulating each strand, the skin effect that occurs in power cables can be reduced. As a result, the alternating current resistance of the power cable conductor is reduced, so that the power transmission capacity can be increased and the voltage drop during power transmission can be reduced.
隣接する素線間の摩耗を減少させることがで
きる。この結果、電力ケーブルの架設時等にお
いて生じる素線の損傷を軽減することができ、
電力ケーブル導体の機械的耐久性を向上させる
ことができる。 Wear between adjacent strands can be reduced. As a result, it is possible to reduce damage to the strands that occurs when installing power cables, etc.
The mechanical durability of power cable conductors can be improved.
第１図はこの発明の一実施例による電力ケーブ
ル導体の構成を示す斜視図、第２図および第３図
は、各々従来の電力ケーブル導体の構成を示す断
面図である。
１，３，１１……アルミニウム素線、２，１０
……電力ケーブル導体。
FIG. 1 is a perspective view showing the structure of a power cable conductor according to an embodiment of the present invention, and FIGS. 2 and 3 are sectional views each showing the structure of a conventional power cable conductor. 1, 3, 11... Aluminum wire, 2, 10
...Power cable conductor.
Claims (1)
において、前記アルミニウム素線は、表面に陽極
酸化皮膜が形成され、かつ前記陽極酸化皮膜の表
面微細孔に、二硫化モリブデンまたは二硫化タン
グステンの微細粒子が含浸されたことを特徴とす
る電力ケーブル導体。1. In a power cable conductor made of an aluminum wire, the aluminum wire has an anodic oxide film formed on its surface, and fine particles of molybdenum disulfide or tungsten disulfide are impregnated into the surface micropores of the anodic oxide film. A power cable conductor characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14913784A JPS6129010A (en) | 1984-07-18 | 1984-07-18 | Power cable conductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14913784A JPS6129010A (en) | 1984-07-18 | 1984-07-18 | Power cable conductor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6129010A JPS6129010A (en) | 1986-02-08 |
| JPH027125B2 true JPH027125B2 (en) | 1990-02-15 |
Family
ID=15468555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14913784A Granted JPS6129010A (en) | 1984-07-18 | 1984-07-18 | Power cable conductor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129010A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6313373A (en) * | 1986-07-04 | 1988-01-20 | Fuji Electric Co Ltd | Self-arc-extinguishing type thyristor |
-
1984
- 1984-07-18 JP JP14913784A patent/JPS6129010A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6129010A (en) | 1986-02-08 |
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