JPS6116746Y2 - - Google Patents
Info
- Publication number
- JPS6116746Y2 JPS6116746Y2 JP12132380U JP12132380U JPS6116746Y2 JP S6116746 Y2 JPS6116746 Y2 JP S6116746Y2 JP 12132380 U JP12132380 U JP 12132380U JP 12132380 U JP12132380 U JP 12132380U JP S6116746 Y2 JPS6116746 Y2 JP S6116746Y2
- Authority
- JP
- Japan
- Prior art keywords
- wire
- power transmission
- overhead power
- ground
- transmission line
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 5
- 239000012212 insulator Substances 0.000 description 5
- 239000011810 insulating material Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007765 extrusion coating Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Landscapes
- Non-Insulated Conductors (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Description
【考案の詳細な説明】
本考案は架空送電線の線下の静電誘導を低減し
た架空送電線路に関するものである。[Detailed Description of the Invention] The present invention relates to an overhead power transmission line that reduces electrostatic induction under the overhead power transmission line.
一般に架空送電線の線下の静電誘導による幣害
を除去するためには、鉄塔間に架設した架空送電
線の下方大地側に裸導体からなる遮蔽線を架設し
ている。 Generally, in order to eliminate damage caused by electrostatic induction under the overhead power transmission lines, a shielding wire made of a bare conductor is installed below the overhead power transmission lines installed between the steel towers on the ground side.
遮蔽線は大地と電気的な接続がなされていない
と静電誘導を低減できないから、遮蔽線は鉄塔に
導通されている。しかし、遮蔽線の両端を鉄塔に
導通した場合には、遮蔽線は大地と閉ループを作
り、架空送電線からの影響により、これに誘導電
流が流れ送電損失が生じるばかりか遮蔽線の線径
も太くなる等の問題がある。 Since static induction cannot be reduced unless the shield wire is electrically connected to the ground, the shield wire is connected to the steel tower. However, when both ends of a shielded wire are connected to a steel tower, the shielded wire forms a closed loop with the ground, and due to the influence of the overhead power transmission line, an induced current flows in this, causing power transmission loss, and the wire diameter of the shielded wire also decreases. There are problems such as getting thicker.
このため近年、遮蔽線の一端側を碍子等の絶縁
体を介して鉄塔に引留めると共に、他端側は鉄塔
に導通させて、遮蔽線を大地と電気的に閉ループ
を作らないように架設する方法が提案された。 For this reason, in recent years, one end of the shielding wire is tied to the steel tower via an insulator such as an insulator, and the other end is connected to the steel tower, so that the shielding wire is installed so as not to create an electrically closed loop with the ground. A method was proposed.
しかしながら、このように構成した場合でも、
遮蔽線にクレーン等の対地絶縁抵抗の低い物が触
れた場合には、遮蔽線−クレーン等−大地−鉄塔
−遮蔽線の電気的閉ループを構成してしまう恐れ
があつた。 However, even with this configuration,
If an object with low insulation resistance to the ground, such as a crane, touches the shield wire, there is a risk that an electrical closed loop of the shield wire, crane, etc., earth, steel tower, and shield wire may be formed.
本考案はこのような欠点を改良したもので、遮
蔽線に絶縁カバーを設けたことを特徴とするもの
である。 The present invention improves on these drawbacks and is characterized by providing an insulating cover on the shielded wire.
これを第１図に示した一実施例に基づき説明す
る。 This will be explained based on an embodiment shown in FIG.
図において１，２は鉄塔、３は架空送電線、４
は静電誘導の遮蔽線を示し、架空送電線３は公知
の方法で支持してある。 In the figure, 1 and 2 are steel towers, 3 is an overhead power line, and 4
shows an electrostatic induction shield line, and the overhead power line 3 is supported in a known manner.
遮蔽線４は、その片端を鉄塔１に引留金具５及
び碍子等の絶縁材６を介した引留め、他端は導通
状態で例えば遮蔽線４端末を固着した引留金具５
を直接鉄塔２に引留め、遮蔽線４が大地と電気的
な閉ループを作らないように架設してある。 The shield wire 4 has one end secured to the steel tower 1 via a retaining fitting 5 and an insulating material 6 such as an insulator, and the other end is connected to a retaining fitting 5 to which the terminal of the shielding wire 4 is fixed, for example, in a conductive state.
is directly tied to the steel tower 2, and the shielding wire 4 is installed so as not to create an electrical closed loop with the ground.
また遮蔽線４には絶縁カバー７を設けてある。
この絶縁カバー７はビニール、ポリエチレン、
FRP等のプラスチツク製品からなり、その構成
は第２図に示すように縦割状のスリツト８を有
し、このスリツト８を介して遮蔽線４の略全長に
亘つて遊嵌状に被せてある。 Further, the shield wire 4 is provided with an insulating cover 7.
This insulation cover 7 is made of vinyl, polyethylene,
It is made of a plastic product such as FRP, and has a vertically divided slit 8 as shown in FIG. .
更に絶縁カバー７の肉厚は、遮蔽効果を損わな
い範囲で厚くし、その機械的強度を高くしてあ
る。 Furthermore, the thickness of the insulating cover 7 is increased within a range that does not impair the shielding effect, and its mechanical strength is increased.
またこの実施例においては、第３図に示す如く
遮蔽線４の鉄塔１に絶縁して引留めた部分におけ
る引留金具５、これに接続した碍子金具９にも、
絶縁カバー１０を設け、鉄塔上の人が遮蔽装置に
触れても、電気的シヨツクを受けることのないよ
うにすると共に人を介して大地と電気的な閉ルー
プが構成されないようにしてある。 In addition, in this embodiment, as shown in FIG. 3, the retaining metal fitting 5 at the portion of the shielding wire 4 that is insulated and secured to the steel tower 1, and the insulator fitting 9 connected thereto, are also provided.
An insulating cover 10 is provided to prevent a person on the tower from receiving an electrical shock even if he or she touches the shielding device, and to prevent an electrical closed loop from being formed with the ground through the person.
尚、引留金具５及び碍子金具９に被せた絶縁カ
バー１０は、場合により省略可能であり、また絶
縁カバー７，１０はテープ巻き、押出被覆、塗布
等による単なる絶縁層であつてもよく、要は遮蔽
線４等をカバーした絶縁材であればよい。 The insulating cover 10 placed over the retaining fitting 5 and the insulator fitting 9 may be omitted depending on the case, and the insulating covers 7 and 10 may be simply an insulating layer formed by wrapping with tape, extrusion coating, coating, etc. may be any insulating material that covers the shielding wire 4 and the like.
しかして本考案架空送電線路によれば、遮蔽線
に絶縁カバーを設けてあるので、遮蔽線にクレー
ン等の対地絶縁抵抗の低い物が触れても、遮蔽線
は大地と閉ループを構成しないので、遮蔽線に誘
導電流が流れる恐れがなくなり所期の目的を達し
得る。 However, according to the overhead power transmission line of the present invention, since the shielded wire is provided with an insulating cover, even if the shielded wire is touched by an object with low insulation resistance to the ground, such as a crane, the shielded wire does not form a closed loop with the ground. There is no possibility that induced current will flow in the shield wire, and the desired purpose can be achieved.
第１図は本考案架空送電線路の一実施例を示す
正面図、第２図は同要部拡大断面図、第３図は遮
蔽線の引留部を説明する説明図である。
１，２……鉄塔、３……架空送電線、４……遮
蔽線、５……引留金具、６……絶縁材、７，１０
……絶縁カバー。
FIG. 1 is a front view showing an embodiment of the overhead power transmission line of the present invention, FIG. 2 is an enlarged cross-sectional view of the same essential part, and FIG. 3 is an explanatory diagram illustrating the anchoring portion of the shield wire. 1, 2... Steel tower, 3... Overhead power transmission line, 4... Shielding wire, 5... Holding fitting, 6... Insulating material, 7, 10
...Insulating cover.
Claims (1)
静電誘導の遮蔽線を大地と電気的に閉ループを作
らないように架設してなる架空送電線路におい
て、前記遮蔽線には絶縁カバーを設けたことを特
徴とする架空送電線路。 On the ground side below the overhead power transmission line installed between the steel towers,
1. An overhead power transmission line comprising an electrostatic induction shield wire installed so as not to form an electrically closed loop with the ground, characterized in that the shield wire is provided with an insulating cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12132380U JPS6116746Y2 (en) | 1980-08-27 | 1980-08-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12132380U JPS6116746Y2 (en) | 1980-08-27 | 1980-08-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5745233U JPS5745233U (en) | 1982-03-12 |
| JPS6116746Y2 true JPS6116746Y2 (en) | 1986-05-23 |
Family
ID=29481990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12132380U Expired JPS6116746Y2 (en) | 1980-08-27 | 1980-08-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6116746Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5973346U (en) * | 1982-11-04 | 1984-05-18 | 関西熱化学株式会社 | Coke oven hearth frier temperature control device |
-
1980
- 1980-08-27 JP JP12132380U patent/JPS6116746Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5745233U (en) | 1982-03-12 |
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