JPH024082B2 - - Google Patents

Info

Publication number
JPH024082B2
JPH024082B2 JP59046732A JP4673284A JPH024082B2 JP H024082 B2 JPH024082 B2 JP H024082B2 JP 59046732 A JP59046732 A JP 59046732A JP 4673284 A JP4673284 A JP 4673284A JP H024082 B2 JPH024082 B2 JP H024082B2
Authority
JP
Japan
Prior art keywords
electric wire
wire
step surface
wind noise
noise
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 - Lifetime
Application number
JP59046732A
Other languages
Japanese (ja)
Other versions
JPS60189809A (en
Inventor
Iwao Hiroo
Juzo Ootsuka
Kyoshi Shimojima
Takashi Kawakami
Hiroshi Kubokawa
Yoshiro Sano
Teruaki Tsutsui
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Cable Ltd
Kansai Denryoku KK
Original Assignee
Hitachi Cable Ltd
Kansai Denryoku KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi Cable Ltd, Kansai Denryoku KK filed Critical Hitachi Cable Ltd
Priority to JP4673284A priority Critical patent/JPS60189809A/en
Publication of JPS60189809A publication Critical patent/JPS60189809A/en
Publication of JPH024082B2 publication Critical patent/JPH024082B2/ja
Granted legal-status Critical Current

Links

Description

【発明の詳細な説明】 [発明の背景と目的] 本発明は、架空送電線の発するコロナ騒音(以
下ANという)を効果的に低減してなる改良され
た風音防止電線に関する。
DETAILED DESCRIPTION OF THE INVENTION [Background and Objectives of the Invention] The present invention relates to an improved wind noise prevention electric wire that effectively reduces corona noise (hereinafter referred to as AN) emitted by an overhead power transmission line.

鉄塔間に架線される架空送電線は、風圧により
騒音を発することがあり、出願人らは、これを防
止可能になる電線として、第1図に示すような電
線Wの周囲にスパイラル素線Sを巻き付けてなる
低風音電線を提案した。(例えば特公昭53−
14146) この形状よりなる低風音電線は、すぐれた風音
防止効果を発揮するが、電線Wの表面に素線Sが
突出しているため、雨天時にコロナによる所謂オ
ーデイブルノイズ(すなわち前記AN)が問題と
なることがあつた。
Overhead power transmission lines connected between steel towers may generate noise due to wind pressure, and the applicants have developed a spiral strand S around the electric wire W as shown in Fig. 1 as an electric wire that can prevent this. We proposed a low wind noise electric wire made by wrapping (For example, Tokuko Sho 53-
14146) The low wind noise electric wire with this shape exhibits an excellent wind noise prevention effect, but since the strands S protrude from the surface of the electric wire W, so-called audible noise (i.e., the above-mentioned AN) due to corona occurs in rainy weather. sometimes became a problem.

そこで、出願人らは、風騒音を効果的に防止し
つつしかも前記コロナ騒音の発生を防止可能にな
る電線として、例えば第3図に断面図として示し
たような特殊形状の電線を提案した。これは、す
くなくとも最外周の素線をセグメント素線により
構成し、当該素線の形状を電線の半径方向に対し
て嵩の大きい素線1と嵩の小さい素線2によつて
構成し、電線10の外周面に高い段差表面10a
と低い段差表面10bを対称的に形成せしめてな
るものである。このように構成することにより、
第2図に模式的にその輪郭構成を示したような外
形構造を呈し、その高い段差表面10aと低い段
差表面10bとの差hを適当な数値に選ぶことに
より、第4図に示すように顕著な騒音防止効果を
発揮せしめることが可能となることを見出した。
なお、この場合、高い段差表面の中心角をθ、そ
の段差の高さをh、高い段差部分のピツチをP、
高い段差表面の外径をD1とした場合に、騒音防
止効果上における最適範囲は、θ=60〜120゜、h
≧1mm、ならびにP=10D1〜15D1であることも
幾多の実証実験によりあきらかとなつた。
Therefore, the applicants proposed an electric wire having a special shape as shown in the cross-sectional view of FIG. 3, for example, as an electric wire that can effectively prevent wind noise and also prevent the generation of the corona noise. In this method, at least the outermost wire is made up of a segment wire, and the shape of the wire is made up of a bulky wire 1 and a small bulky wire 2 in the radial direction of the wire. A high step surface 10a on the outer peripheral surface of 10
This is achieved by symmetrically forming a low stepped surface 10b. By configuring like this,
By exhibiting an external structure as schematically shown in FIG. 2, and selecting an appropriate value for the difference h between the high step surface 10a and the low step surface 10b, as shown in FIG. It has been found that it is possible to exhibit a remarkable noise prevention effect.
In this case, the central angle of the high step surface is θ, the height of the step is h, the pitch of the high step is P,
When the outer diameter of the high step surface is D 1 , the optimum range for noise prevention effect is θ = 60 to 120°, h
It has become clear through numerous demonstration experiments that ≧1 mm and P=10D 1 to 15D 1 .

しかし、上記第3図に示すような電線につい
て、なお詳細に検討を加えてみると、雨天時に電
線の外表面を流れる雨水の挙特に懸念される問題
があることが判明した。それは、段差部分に沿つ
て雨水が集められ、それが水滴にかわつて高い段
差表面の最下部Bに大きく成長し、これがコロナ
騒音の原因を作るおそれのあることがわかつたか
らである。
However, when the electric wire shown in FIG. 3 was further examined in detail, it was found that there is a problem in which rainwater flows on the outer surface of the electric wire during rainy weather, which is a particular concern. This is because it was found that rainwater collects along the stepped portion, and instead of water droplets, it grows to a large extent at the bottom B of the high stepped surface, which may cause corona noise.

本発明は、第3図に示すような出願人の提案に
係る電線において、上記コロナ騒音発生に関する
問導点を解消した改良された電線を提供しようと
するものである。
The present invention aims to provide an improved electric wire proposed by the applicant as shown in FIG. 3, which eliminates the problems associated with the generation of corona noise.

[発明の概要] すなわち、本発明は、高い段差表面を構成する
素線の構成に着目し、雨水に起因する水滴の成長
を解消しようとするものであり、その要旨とする
ところは、すくなくとも撚り線の最外周撚り線を
セグメント素線により構成し、素線の電線半径方
向の嵩の大きい素線と小さい素線を混ぜ撚りする
ことにより、撚り線の外周面に対称的な対の段差
表面をスパイラル状に形成してなる低風音電線に
おいて、前記高い段差表面を形成する素線の接合
部が高い段差表面の円周方向幅のほぼ中央位置に
存在するように構成してなる低AN型低風音電線
にある。
[Summary of the invention] That is, the present invention focuses on the structure of the strands constituting the high step surface and attempts to eliminate the growth of water droplets caused by rainwater. The outermost stranded wire of the wire is composed of segmented wires, and by mixing and twisting bulky wires and small wires in the radial direction of the wire, a pair of step surfaces symmetrical to the outer circumferential surface of the twisted wires is created. In the low wind noise electric wire formed in a spiral shape, the joint part of the strands forming the high step surface is located approximately in the center of the circumferential width of the high step surface. It is located in the type low wind sound electric wire.

[実施例] 以下に実施例に基いて説明する。[Example] This will be explained below based on examples.

第5図は本発明に係る低AN型低風音電線の一
実施例を示す断面図であり、半径方向に嵩の大き
い素線1と嵩の小さい素線2とを混ぜ撚りするこ
とにより、高い段差表面10aと低い段差表面1
0bとを構成することにおいて第3図の場合と変
りないが、本発明に係る電線においては、高い段
差表面10aの半径方向幅のほぼ中央位置に素線
1,1の接合部1aが存在するように構成したこ
とに大きな特徴がある。
FIG. 5 is a sectional view showing an embodiment of the low AN type low wind noise electric wire according to the present invention. By mixing and twisting the bulky strands 1 and the small bulky strands 2 in the radial direction, High step surface 10a and low step surface 1
0b is the same as in the case of FIG. 3, but in the electric wire according to the present invention, the joint 1a of the strands 1, 1 exists at approximately the center of the radial width of the high stepped surface 10a. A major feature is that it is structured in this way.

このように接合部1aを形成せしめれば、高い
段差表面10aは素線の撚りに従つてその撚りピ
ツチPをもつてなる螺旋状の段差部を形成するこ
ととなり、その高い段差表面10aの最下点Bに
は常に素線1,1の接合部1aが存在することと
なる。一方、前記の通り、高い段差表面により集
められた雨水は、丁度この最下点部Bに溜り水滴
となつて成長するのであるが、本発明電線ではこ
の最下点部Bに素線1,1の接合部1aが存在す
るために、水滴はこの接合部1aにおいて毛細管
現象によつて吸い取られる結果、大きく成長する
ことがない。したがつて、前記ANの発生を大幅
に抑止することができるのである。
If the joint portion 1a is formed in this way, the high step surface 10a will form a spiral step portion having the twist pitch P according to the twist of the strands, and the highest step surface 10a will have a twist pitch P. At the lower point B, the joint 1a of the strands 1, 1 always exists. On the other hand, as mentioned above, the rainwater collected by the high step surface collects at this lowest point B and grows as water droplets, but in the electric wire of the present invention, the strands 1 and 1 at this lowest point B, Since the joint 1a exists, water droplets are absorbed by capillary action at the joint 1a and do not grow large. Therefore, the occurrence of AN can be significantly suppressed.

第6図は、最下点Bに接合部の存在しない第3
図に示す既提案の構造の電線と本発明電線とのコ
ロナ発生実験結果を示したものであり、同一条件
において本発明電線の場合にはAN値が顕著に小
さくなつている様子が端的に読み取れる。
Figure 6 shows the third point where there is no joint at the lowest point B.
The figure shows the results of a corona generation experiment between the electric wire with the previously proposed structure shown in the figure and the electric wire of the present invention, and it can be clearly seen that the AN value is significantly smaller in the case of the electric wire of the present invention under the same conditions. .

[発明の効果] 以上の通り、本発明に係る電線は、従来のスパ
イラル巻き方式に比べ大幅にAN値を低下せしめ
得る段差表面形成方式の低風音電線において、さ
らにそのAN値を低下せしめ得たものであり、環
境改善に寄与するものとしてその意義は大きなも
のがある。
[Effects of the Invention] As described above, the electric wire according to the present invention can further reduce the AN value of the low wind noise electric wire of the step surface formation method, which can significantly reduce the AN value compared to the conventional spiral winding method. It is of great significance as it contributes to environmental improvement.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は従来のスパイラル巻き方式の低風音電
線を示す部分見取り図、第2図は既提案に係る電
線のデイメンシヨンを示す模式図、第3図は既提
案に係る低風音電線の実施例を示す断面図、第4
図は第3図に示す電線の低風音効果を示す線図、
第5図は本発明に係る電線の実施例を示す断面
図、第6図は既提案の電線と本発明に係る電線と
のAN値の比較を示す線図である。 1:嵩の大きい素線、2:嵩の小さい素線、1
a:接合部、10a:高い段差表面、10b:低
い段差表面。
Figure 1 is a partial sketch showing a conventional spiral winding low wind noise electric wire, Figure 2 is a schematic diagram showing the dimensions of the already proposed electric wire, and Figure 3 is an example of the already proposed low wind noise electric wire. 4th cross-sectional view showing
The figure is a diagram showing the low wind noise effect of the electric wire shown in Figure 3,
FIG. 5 is a cross-sectional view showing an example of the electric wire according to the present invention, and FIG. 6 is a diagram showing a comparison of the AN value between the already proposed electric wire and the electric wire according to the present invention. 1: Large bulky wire, 2: Small bulky wire, 1
a: joint portion, 10a: high step surface, 10b: low step surface.

【特許請求の範囲】[Claims]

1 すくなくとも撚り線の最外周撚り線をセグメ
ント素線により構成し、素線の電線半径方向の嵩
の大きい素線と小さい素線を混ぜ撚りすることに
より、撚り線の外周面に対称的な対の段差表面を
スパイラル状に形成してなる低風音電線におい
て、前記高い段差表面を構成するセグメント素線
の間に、当該段差表面の円周方向幅のほぼ中央位
置となる位置に、すくなくとも電線の外表面側を
円形面に形成してなる素線を嵌入せしめてなる低
AN型低風音電線。
1 At least the outermost strand of the stranded wire is made up of segment wires, and by mixing and twisting the wires with larger and smaller bulks in the radial direction of the wire, symmetrical pairs are formed on the outer peripheral surface of the stranded wire. In a low wind noise electric wire having a step surface formed in a spiral shape, at least an electric wire is placed between the segment wires constituting the high step surface at a position approximately at the center of the circumferential width of the step surface. The outer surface of the wire is formed into a circular surface and a wire is inserted into the lower surface.
AN type low wind noise electric wire.

JP4673284A 1984-03-12 1984-03-12 Low an type low wind sound wire Granted JPS60189809A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4673284A JPS60189809A (en) 1984-03-12 1984-03-12 Low an type low wind sound wire

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4673284A JPS60189809A (en) 1984-03-12 1984-03-12 Low an type low wind sound wire

Publications (2)

Publication Number Publication Date
JPS60189809A JPS60189809A (en) 1985-09-27
JPH024082B2 true JPH024082B2 (en) 1990-01-26

Family

ID=12755502

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4673284A Granted JPS60189809A (en) 1984-03-12 1984-03-12 Low an type low wind sound wire

Country Status (1)

Country Link
JP (1) JPS60189809A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4980369U (en) * 1972-10-31 1974-07-11
JPS5864009U (en) * 1981-10-26 1983-04-30 日立電線株式会社 overhead power lines

Also Published As

Publication number Publication date
JPS60189809A (en) 1985-09-27

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