JPH05290630A - Overhead transmission line - Google Patents

Overhead transmission line

Info

Publication number
JPH05290630A
JPH05290630A JP9443892A JP9443892A JPH05290630A JP H05290630 A JPH05290630 A JP H05290630A JP 9443892 A JP9443892 A JP 9443892A JP 9443892 A JP9443892 A JP 9443892A JP H05290630 A JPH05290630 A JP H05290630A
Authority
JP
Japan
Prior art keywords
transmission line
wound
rod
power transmission
rods
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.)
Pending
Application number
JP9443892A
Other languages
Japanese (ja)
Inventor
Kiyoshi Shimojima
清志 下嶋
Takashi Kawakami
尚 川上
Kenji Yamamoto
健次 山本
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
Original Assignee
Hitachi Cable Ltd
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 filed Critical Hitachi Cable Ltd
Priority to JP9443892A priority Critical patent/JPH05290630A/en
Publication of JPH05290630A publication Critical patent/JPH05290630A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To restrain a high pressure overhead transmission line wound between the diameters of transmission steel towers from causing AN and sound against wind by winding armor rods on the outer periphery of the transmission line across said diameters, and winding two streaks of spiral rods on the outer peripheries of the armor rods. CONSTITUTION:An overhead transmission line comprises a transmission line 11 on the outer periphery of which fourty-seven armor rods 13 are closely wound across the diameters of a transmission steel tower and the next transmission steel tower and two spiral rods 14, 15 wound in contact with each other on the outer peripheries of the armor rods across the diameters, the transmission line 11 comprising e.g. seven mesh stranded wires 10 each made by a galvanized steel wire and two layers (eighteen and twenty-four) of aluminium conductors 11a, 11b wound on the outer peripheries of the mesh stranded wires 10. The outside diameter of each armor rod 13 wound on the outer periphery of a steel- cored aluminium cable 12 is equal to the outside diameter of the line when the rods 14, 15 are wound on the outer periphery of the stranded cable 12. The rods 14, 15 are wound in the direction opposite to that in which the rod 13 is wound.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、高圧の送電線における
AN及び風音の発生を低減した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 in which generation of AN and wind noise in a high voltage power transmission line is reduced.

【0002】[0002]

【従来の技術】架空送電線が風圧を受けた場合、送電線
周りの風の流れの剥離に伴って風音が発生したり、架空
送電線の表面電位傾度が大きい場合にはAN(オーディ
ブルノイズ)等の騒音が発生することがある。
2. Description of the Related Art When an overhead power transmission line receives wind pressure, wind noise is generated due to separation of wind flow around the power transmission line, or if the surface potential gradient of the overhead power transmission line is large, AN (audible) is used. Noise) may occur.

【0003】風音対策としては図6(a)、(b)に示
すようにスパイラルロッドを送電線の外周に巻き付ける
ことが行われている。
As a measure against wind noise, a spiral rod is wound around the outer circumference of a power transmission line as shown in FIGS. 6 (a) and 6 (b).

【0004】図6(a)はスパイラルロッドを2条対角
巻きした架空送電線の断面図である。
FIG. 6 (a) is a sectional view of an overhead power transmission line in which a spiral rod is wound in two diagonal directions.

【0005】同図に示す架空送電線は、亜鉛メッキ鋼線
1からなる鋼撚線の外周に複数のアルミ導体2を巻き付
けた送電線(ACSR、鋼心アルミ撚線)の外周に、さ
らに2本のスパイラルロッド3、4を対角線上に巻き付
けて形成したものである。この架空送電線は送電線の外
径相当分の風圧荷重の増加がある。
The overhead power transmission line shown in the same figure has two more wires on the outer circumference of a steel stranded wire made of a galvanized steel wire 1 and a plurality of aluminum conductors 2 wound around it (ACSR, steel core aluminum stranded wire). The spiral rods 3 and 4 are formed by winding them on a diagonal line. This overhead transmission line has an increase in wind pressure load corresponding to the outer diameter of the transmission line.

【0006】図6(b)はスパイラルロッドを2条密着
巻きしたACSRの断面図である。
FIG. 6 (b) is a cross-sectional view of an ACSR in which a spiral rod is wound tightly in two lines.

【0007】同図に示す架空送電線は、ACSRの外周
に、2本のスパイラルロッド3、4を密着して巻き付け
て形成したものである。この架空送電線には風圧荷重の
増加がないことが実験的に確認されている。
The overhead power transmission line shown in the figure is formed by tightly winding two spiral rods 3 and 4 around the outer circumference of an ACSR. It has been experimentally confirmed that there is no increase in wind pressure load on this overhead transmission line.

【0008】図7は4本の超高圧送電線をスペーサ(図
示せず)に取付けた状態の断面を示す模式図である。こ
れはコロナ雑音の発生を防止するため1相分の導体(送
電線)を4本に分割して送電するものである。
FIG. 7 is a schematic view showing a cross section of a state where four ultra high voltage power transmission lines are attached to a spacer (not shown). This is to transmit the power by dividing the conductor (transmission line) for one phase into four in order to prevent the generation of corona noise.

【0009】ところで、同図に示すような4導体5〜8
で構成されている(200,000V以上の)超高圧送電線に、
図6(a)に示した風音対策(スパイラルロッド2条対
角巻き)を施した場合、スパイラルロッド3,4の突起
部の表面電位傾度(Gmax)が高くなり、降雨時のA
N騒音レベルが上昇する。
By the way, four conductors 5 to 8 as shown in FIG.
The ultra high voltage transmission line (200,000V or more) composed of
When the wind noise countermeasure (two spiral rods diagonally wound) shown in FIG. 6 (a) is applied, the surface potential gradient (Gmax) of the protrusions of the spiral rods 3 and 4 becomes high, and A
N Noise level rises.

【0010】このため、一般には図6(b)に示した風
音対策(スパイラルロッド2条密着巻き)を超高圧送電
線の各導体表面にそれぞれ施すことが行われている。
For this reason, generally, the wind noise countermeasure (two spiral winding windings of the spiral rod) shown in FIG. 6B is applied to each conductor surface of the ultra high voltage power transmission line.

【0011】[0011]

【発明が解決しようとする課題】しかしながら、ANの
発生は架空送電線自体のGmaxの影響も大きく、架空
送電線自体のGmaxが大きければ「スパイラルロッド
2条密着巻き」(図6(b))を採用しても効果はな
い。また、風音発生の予測は可能なため、鉄塔の強度は
「スパイラルロッド2条対角巻き」(図6(a))がで
きるように設計されている場合が多いが、上記の理由
(ANの発生)により風音対策ができない場合がある。
However, the occurrence of AN is greatly affected by the Gmax of the overhead power transmission line itself, and if the Gmax of the overhead power transmission line itself is large, "spiral rod two-row close winding" (FIG. 6 (b)). Has no effect. In addition, since it is possible to predict the generation of wind noise, the strength of the steel tower is often designed so as to allow "spiral rod two-way diagonal winding" (Fig. 6 (a)). Occurrence of wind noise) may prevent measures against wind noise.

【0012】そこで、本発明の目的は、上記課題を解決
し、AN及び風音の発生を低減した架空送電線を提供す
ることにある。
Therefore, an object of the present invention is to solve the above problems and provide an overhead power transmission line in which the generation of AN and wind noise is reduced.

【0013】[0013]

【課題を解決するための手段】上記目的を達成するため
に本発明は、径間に掛け渡された高圧の架空送電線にお
いて、径間に亘って送電線の外周にアーマロッドを巻き
付け、さらにアーマロッドの外周に2条巻きスパイラル
ロッドを巻き付けたものである。
In order to achieve the above object, the present invention relates to a high voltage overhead power transmission line spanning a span, in which an armor rod is wound around the outer circumference of the power transmission line, and the armor rod is further wound. A double-strand spiral rod is wound around the outer circumference of.

【0014】[0014]

【作用】上記構成によれば、径間に亘って送電線の外周
にアーマロッドが巻き付けられているため、送電線の表
面が平滑な状態に近付くので送電線の表面電位傾度が低
下してANの発生が低減されると共に、アーマロッドの
外周に2条密着巻きスパイラルロッドが巻き付けられて
いるので風音の発生が低減される。
According to the above structure, since the armor rod is wound around the outer circumference of the power transmission line over the span, the surface of the power transmission line approaches a smooth state, so that the surface potential gradient of the power transmission line decreases and the AN The generation of wind noise is reduced as well as the generation of wind noise is reduced because the spiral rod with two threads is wound around the outer periphery of the armor rod.

【0015】[0015]

【実施例】以下、本発明の一実施例を添付図面に基づい
て詳述する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

【0016】図1は本実施例の架空送電線の断面図であ
る。
FIG. 1 is a sectional view of the overhead power transmission line of this embodiment.

【0017】同図において、架空送電線は、例えば亜鉛
メッキ鋼線からなる7本の鋼撚線10と、これらの鋼撚
線10の外周に巻き付けられた2層(18本+24本)
のアルミ導体11a、11bとで構成された送電線(前
述したACSR)12の外周に、径間(送電用鉄塔と次
の送電用鉄塔との間)に亘って密着して巻き付けられた
47本のアーマロッド13と、これらのアーマロッド1
3の外周に径間に亘って互いに密着して巻き付けられた
2本(条)のスパイラルロッド14、15とで構成され
ている。
In FIG. 1, an overhead power transmission line includes seven steel twisted wires 10 made of, for example, galvanized steel wires, and two layers (18 + 24 wires) wound around the outer circumference of these steel twisted wires 10.
47 tightly wound around the outer circumference of the power transmission line (ACSR described above) 12 composed of the aluminum conductors 11a and 11b of the aluminum conductor 11a, 11b over the span (between the power transmission tower and the next power transmission tower) Armor rods 13 and these armor rods 1
It is composed of two (stripe) spiral rods 14 and 15 wound closely around each other on the outer circumference of 3.

【0018】ACSR12の外周に巻き付けたアーマロ
ッド13の外径が、ACSR12の外周に2条巻きスパ
イラルロッド14、15を巻き付けたときの外径(等価
外径)と等しくなるようになっている。
The outer diameter of the armor rod 13 wound around the outer circumference of the ACSR 12 is set to be equal to the outer diameter (equivalent outer diameter) of the spiral wound rods 14 and 15 wound around the outer circumference of the ACSR 12.

【0019】アーマロッド13は、径間中で随時その巻
き付け方向を変化させると共に、2条密着巻きスパイラ
ルロッド14、15の巻き付け方向がアーマロッド13
の巻き付け方向と逆になるように巻き付けられている。
これは、架空送電線の空力安定性を保ち、風音低減効果
を増すためであり、巻き付け方向の反転の長さは(施工
性を考慮して)スペーサ〜スペーサ間の長さに略等しく
なっている。
The armor rod 13 changes its winding direction at any time in the span, and the winding direction of the double-thread closely wound spiral rods 14 and 15 is changed.
It is wound so that it is opposite to the winding direction of.
This is because the aerodynamic stability of the overhead power transmission line is maintained and the wind noise reduction effect is increased, and the length of reversal of the winding direction is approximately equal to the length between the spacers (in consideration of workability). ing.

【0020】ここで、等価外径の増加について図2を参
照して説明する。
Here, the increase of the equivalent outer diameter will be described with reference to FIG.

【0021】図2(a)はACSRの外周に1条のスパ
イラルロッドを巻き付けたときの外観図であり、図2
(b)はACSRの中心軸に垂直な方向への投影図であ
る。なお、説明を簡単にするためACSRを棒状にし、
スパイラルロッドを1条とする。
FIG. 2A is an external view of a single spiral rod wound around the outer periphery of the ACSR.
(B) is a projection view in a direction perpendicular to the central axis of the ACSR. In addition, in order to simplify the explanation, the ACSR is made into a rod shape,
Use one spiral rod.

【0022】図2(b)より、ACSR12の長手方向
にスパイラルロッド14の一部(斜線部)14aが周期
的に飛び出して見えるのがわかる。ACSR12の単位
長さ当りの投影面積は計算で求めることができる。この
投影面積に略等しくなるようなACSR12の外径(等
価投影径)をDeqとし、ACSR12の処理前の外径
をDφとすると、DeqとDφとの間には数1に示すよ
うな関係がある。
From FIG. 2 (b), it can be seen that a part (hatched portion) 14a of the spiral rod 14 appears periodically protruding in the longitudinal direction of the ACSR 12. The projected area per unit length of the ACSR 12 can be calculated. Assuming that the outer diameter (equivalent projected diameter) of the ACSR 12 that is approximately equal to the projected area is Deq and the outer diameter of the ACSR 12 before processing is Dφ, the relationship between Deq and Dφ as shown in Formula 1 is obtained. is there.

【0023】[0023]

【数1】 [Equation 1]

【0024】但し、Aは定数であり、スパイラルロッド
14の径をφd、スパイラルロッド14の巻きピッチを
pとする。
However, A is a constant, the diameter of the spiral rod 14 is φd, and the winding pitch of the spiral rod 14 is p.

【0025】さて、ACSR12の外周にアーマロッド
13を巻き付けることによる等価外径の増加率は、AC
SR12の外周にスパイラルロッド14を巻き付けたと
きの風圧荷重の増加率と同じ程度になっているので、例
えば、ACSR12の外径Dφが28.5mm、サイズ
(断面積)が410mm2 で、アーマロッド13の外径
φdが2.2mmの場合には、定数Aは1.155とな
り、等価外径Deqが32.9mmとなり(28.5+
28.5×0.155=32.9)、外径6mmのスピ
ンドルロッド14、15(2条)を巻き付けたときの等
価外径32.9mmに等しくなる(ACSR12の外径
Dφに対して約4.4mm増加していることになる)。
従って、ACSR12の外周にスピンドルロッド14を
巻き付ける替わりに、外径dφが2.2mmのアーマロ
ッド14を巻付けても風圧荷重は略等しくなる。本願は
この等価外径の増加分を有効に利用するものである。
Now, the rate of increase of the equivalent outer diameter by winding the armor rod 13 around the outer circumference of the ACSR 12 is AC
Since the rate of increase of the wind pressure load when the spiral rod 14 is wound around the outer periphery of the SR12 is approximately the same, for example, the outer diameter Dφ of the ACSR 12 is 28.5 mm, the size (cross-sectional area) is 410 mm 2 , and the armor rod 13 When the outer diameter φd of is 2.2 mm, the constant A is 1.155 and the equivalent outer diameter Deq is 32.9 mm (28.5+
28.5 × 0.155 = 32.9), which is equal to the equivalent outer diameter of 32.9 mm when the spindle rods 14 and 15 (2 rows) having an outer diameter of 6 mm are wound (about the outer diameter Dφ of the ACSR 12). It means an increase of 4.4 mm).
Therefore, even if the armor rod 14 having an outer diameter dφ of 2.2 mm is wound around the spindle rod 14 around the outer circumference of the ACSR 12, the wind pressure load becomes substantially equal. The present application effectively utilizes the increase in the equivalent outer diameter.

【0026】また、アーマロッド13はACSR12へ
の巻付け作業性を向上させるため、予めACSR12の
外周に複数本接着しておいてもよい。また、スパイラル
ロッド14、15の巻付け方法は、風圧荷重が増加しな
い2条密着巻きが好ましい。
In order to improve the workability of winding the armor rod 13 around the ACSR 12, a plurality of armor rods 13 may be bonded to the outer periphery of the ACSR 12 in advance. Further, the spiral rods 14 and 15 are preferably wound by a double-threaded close-wound winding in which wind pressure load does not increase.

【0027】次に実施例の作用を述べる。Next, the operation of the embodiment will be described.

【0028】径間に亘ってACSR12の外周にアルミ
導体11の外径より小さな外径を有するアーマロッド1
3が巻き付けられているためACSR12の表面の凹凸
が小さくなり、平滑な表面状態に近付くので、ACSR
12の表面電位傾度が低下してANの発生が低減される
と共に、アーマロッド13の外周に2条密着巻きスパイ
ラルロッド14、15が巻き付けられているので、AC
SR12が風圧を受けた場合、ACSR12周りの風の
流れの剥離が低減されて風音の発生が低減される。
An armor rod 1 having an outer diameter smaller than the outer diameter of the aluminum conductor 11 on the outer periphery of the ACSR 12 over the span.
Since 3 is wrapped around, the surface irregularities of the ACSR 12 become small, and the surface condition approaches a smooth surface.
Since the surface potential gradient of 12 decreases and the generation of AN is reduced, and the double rod spirally wound spiral rods 14 and 15 are wound around the outer periphery of the armor rod 13,
When SR12 receives wind pressure, separation of the wind flow around ACSR12 is reduced and wind noise is reduced.

【0029】図3は、軽雨時のコロナケージ試験におけ
るACSRの外径と、AN騒音レベルとの関係を示した
グラフである。横軸はACSR外径[mm]、縦軸はA
Nの騒音レベル[dB(A)]、課電電圧は500[K
V]である。
FIG. 3 is a graph showing the relationship between the outer diameter of the ACSR and the AN noise level in the corona cage test during light rain. Horizontal axis is ACSR outer diameter [mm], vertical axis is A
N noise level [dB (A)], applied voltage is 500 [K
V].

【0030】図よりACSR12の外径が10[mm]
から40[mm]に増加するにつれて、AN騒音レベル
が約43[dB(A)]から約23[dB(A)]まで
20[dB(A)]も減少することがわかる。
From the figure, the outer diameter of the ACSR 12 is 10 [mm].
It can be seen that the AN noise level decreases by about 20 [dB (A)] from about 43 [dB (A)] to about 23 [dB (A)] as increasing from 40 [mm] to 40 [mm].

【0031】図4は、スパイラルロッドのACSRへの
巻き付け方と、風速Vが40m/sのときの風圧荷重
(抗力係数)との関係を示したグラフである。横軸は、
ACSRのみのときと、ACSRへの巻き付け方(S巻
き、Z巻き、対角、密着)を表わし、縦軸は抗力係数を
表わす。尚、抗力係数Kは数2で表わされる。
FIG. 4 is a graph showing the relationship between the winding method of the spiral rod around the ACSR and the wind pressure load (coefficient of drag) when the wind speed V is 40 m / s. The horizontal axis is
It represents the case of only ACSR and the winding method (S winding, Z winding, diagonal, close contact) around ACSR, and the vertical axis represents the drag coefficient. The drag coefficient K is expressed by the equation 2.

【0032】[0032]

【数2】 [Equation 2]

【0033】但し、Dは荷重、Aは投影面積、ρは空気
密度を表わす。
However, D is the load, A is the projected area, and ρ is the air density.

【0034】同図より、1条巻き付け(S11、Z11)、
2条密着巻き付け(S12、Z12)の場合の抗力係数が
0.9〜1.0程度であり、処理前のACSRの抗力係
数に略等しく、ACSRの外径の増加の影響はほとんど
認められない。これに対して2条対角巻き付け(S12
12)の場合は、外径増加分の抗力係数が1.1〜1.
2まで増加しているのが認められる。なお、巻き付け方
向、すなわちS巻きとZ巻きとの差はほとんど皆無であ
る。
From the figure, single-strand winding (S 11 , Z 11 ),
The drag coefficient in the case of double-adhesion winding (S 12 , Z 12 ) is about 0.9 to 1.0, which is almost equal to the drag coefficient of ACSR before treatment, and the influence of the increase in the outer diameter of ACSR is almost recognized. I can't. On the other hand, two-fold diagonal winding (S 12 ,
In the case of Z 12 ), the drag coefficient corresponding to the increase in outer diameter is 1.1 to 1.
It is recognized that the number has increased to 2. There is almost no difference in the winding direction, that is, the difference between the S winding and the Z winding.

【0035】図5は処理前のACSRと、スパイラルロ
ッドまたはアーマロッドを巻き付けたときのAN騒音レ
ベルを比較したグラフである。
FIG. 5 is a graph comparing ASR before treatment with AN noise level when a spiral rod or an armor rod is wound.

【0036】図において、サイズ410[mm2 ]のA
CSRのみのときはAN騒音レベルが約35[dB
(A)]であるのに対し、同じACSRにスパイラルロ
ッドを対角2条巻きしたときは40[dB(A)]を超
え、ACSRにアーマロッドを巻き付けたときには約3
2[dB(A)]程度となり、ACSRにアーマロッド
を巻き付け、さらにスパイラルロッドを巻き付けたとき
は約33[dB(A)]となった。
In the figure, A of size 410 [mm 2 ]
When using only CSR, the AN noise level is about 35 [dB]
(A)], when the spiral rod is wound in two diagonal lines around the same ACSR, it exceeds 40 [dB (A)], and when the armor rod is wound around the ACSR, it is about 3
It was about 2 [dB (A)], and it was about 33 [dB (A)] when the armor rod was wound around the ACSR and the spiral rod was further wound.

【0037】従って、図4及び図5より、ACSRの外
周にアーマロッドを巻き付け、さらにアーマロッドの外
周にスパイラルロッドを2条密着巻き付けすれば、AN
の発生により風音対策が困難とされた線路に対しても、
AN及び風音の発生を低減することができる。
Therefore, from FIG. 4 and FIG. 5, if the armor rod is wound around the outer circumference of the ACSR, and further the spiral rod is closely wound around the outer circumference of the armor rod, AN
Even for tracks where wind noise countermeasures were difficult due to
The generation of AN and wind noise can be reduced.

【0038】尚、本実施例では、ACSRの外周にアー
マロッドを密に巻き付けているが、これに限定されるも
のではなく、1素線径分粗に巻き付けてもよい。また本
実施例では送電線としてACSRを用いたが、TACS
R(鋼心耐熱アルミ合金撚線)、KTAl(高力耐熱ア
ルミ合金線)等他の種類の裸線に適用してもよい。
In this embodiment, the armor rod is tightly wound around the outer circumference of the ACSR, but the present invention is not limited to this and may be roughly wound by one wire diameter. Further, although the ACSR is used as the power transmission line in this embodiment, the TACS
It may be applied to other types of bare wire such as R (steel core heat-resistant aluminum alloy stranded wire) and KTAl (high-strength heat-resistant aluminum alloy wire).

【0039】[0039]

【発明の効果】以上要するに本発明によれば、径間に掛
け渡された高圧の架空送電線において、径間に亘って送
電線の外周にアーマロッドを巻き付け、さらにアーマロ
ッドの外周に2条巻きスパイラルロッドを巻き付けたの
で、架空送電線のAN及び風音の発生を低減することが
できる。
In summary, according to the present invention, in a high-voltage overhead power transmission line spanning a span, an armor rod is wound around the outer periphery of the power transmission line, and further, a double-strand spiral is wound around the outer periphery of the armor rod. Since the rod is wound, the generation of AN and wind noise of the overhead power transmission line can be reduced.

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

【図1】本発明の架空送電線の一実施例の断面図であ
る。
FIG. 1 is a cross-sectional view of an embodiment of an overhead power transmission line of the present invention.

【図2】(a)はACSRの外周に1条のスパイラルロ
ッドを巻き付けたときの外観図であり、(b)はACS
Rの中心軸に垂直な方向への投影図である。
FIG. 2A is an external view of a single spiral rod wound around the outer periphery of an ACSR, and FIG.
It is a projection figure in the direction perpendicular to the central axis of R.

【図3】軽雨時のコロナケージ試験におけるACSRの
外径と、AN騒音レベルとの関係を示したグラフであ
る。
FIG. 3 is a graph showing the relationship between the outer diameter of ACSR and the AN noise level in a corona cage test during light rain.

【図4】スパイラルロッドのACSRへの巻き付け方
と、風圧荷重(抗力係数)との関係を示したグラフであ
る。
FIG. 4 is a graph showing a relationship between a method of winding a spiral rod around an ACSR and a wind pressure load (coefficient of drag).

【図5】処理前のACSRと、スパイラルロッドまたは
アーマロッドを巻き付け処理を行ったACSRのAN騒
音レベルとの関係を示したグラフである。
FIG. 5 is a graph showing the relationship between the untreated ACSR and the AN noise level of the ACSR that has been wound with a spiral rod or armor rod.

【図6】ACSRにスパイラルロッドを巻き付けた従来
の架空送電線の断面図である。
FIG. 6 is a cross-sectional view of a conventional overhead power transmission line in which a spiral rod is wound around ACSR.

【図7】4本の超高圧送電線をスペーサ(図示せず)に
取付けた状態の断面を示す模式図である。
FIG. 7 is a schematic view showing a cross section of a state where four ultra high voltage power transmission lines are attached to a spacer (not shown).

【符号の説明】[Explanation of symbols]

10 鋼撚線 11a、11b アルミ導体 12 ACSR 13 アーマロッド 14、15 スパイラルロッド 10 Steel Stranded Wire 11a, 11b Aluminum Conductor 12 ACSR 13 Armor Rod 14, 15 Spiral Rod

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 径間に掛け渡された高圧の架空送電線に
おいて、前記径間に亘って送電線の外周にアーマロッド
を巻き付け、さらに該アーマロッドの外周に2条巻きス
パイラルロッドを巻き付けたことを特徴とする架空送電
線。
1. In a high voltage overhead power transmission line spanning a span, an armor rod is wound around the outer circumference of the power transmission line across the span, and a double-strand spiral rod is wound around the outer circumference of the armor rod. A characteristic overhead power line.
【請求項2】 前記送電線の外周に巻き付けたアーマロ
ッドの外径が、前記送電線の外周に2条密着巻きスパイ
ラルロッドを巻き付けたときの外径と略同等となるよう
にしたことを特徴とする請求項1に記載の架空送電線。
2. The outer diameter of the armor rod wound around the outer circumference of the power transmission line is set to be substantially the same as the outer diameter when the two-row closely wound spiral rod is wound around the outer circumference of the power transmission line. The overhead power transmission line according to claim 1.
【請求項3】 前記アーマロッドを前記径間中で随時そ
の巻き付け方向を変化させると共に、前記2条密着巻き
スパイラルロッドの巻き付け方向を、前記アーマロッド
の巻き付け方向と逆になるようにしたことを特徴とする
請求項1及び請求項2のいずれか1項に記載の架空送電
線。
3. The winding direction of the armor rod is changed at any time in the span, and the winding direction of the two-row closely wound spiral rod is set to be opposite to the winding direction of the armor rod. The overhead power transmission line according to any one of claims 1 and 2.
JP9443892A 1992-04-14 1992-04-14 Overhead transmission line Pending JPH05290630A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9443892A JPH05290630A (en) 1992-04-14 1992-04-14 Overhead transmission line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9443892A JPH05290630A (en) 1992-04-14 1992-04-14 Overhead transmission line

Publications (1)

Publication Number Publication Date
JPH05290630A true JPH05290630A (en) 1993-11-05

Family

ID=14110264

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9443892A Pending JPH05290630A (en) 1992-04-14 1992-04-14 Overhead transmission line

Country Status (1)

Country Link
JP (1) JPH05290630A (en)

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