JPH03219508A - Lightning protection system for overhead power transmission lines - Google Patents
Lightning protection system for overhead power transmission linesInfo
- Publication number
- JPH03219508A JPH03219508A JP1461090A JP1461090A JPH03219508A JP H03219508 A JPH03219508 A JP H03219508A JP 1461090 A JP1461090 A JP 1461090A JP 1461090 A JP1461090 A JP 1461090A JP H03219508 A JPH03219508 A JP H03219508A
- Authority
- JP
- Japan
- Prior art keywords
- power transmission
- arrester
- overhead power
- lightning
- transmission lines
- 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
Links
- 230000005540 biological transmission Effects 0.000 title claims description 31
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 239000012212 insulator Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000011787 zinc oxide Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は架空送電線路の避雷システムに関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a lightning protection system for overhead power transmission lines.
（従来の技術）
架空送電線路を雪害から防止し、瞬時停電や電圧降下等
を防ぎ電力供給の信頼性向上をはかるため、近年架空送
電線の鉄塔に酸化亜鉛（ＺｎＯ）素子を用いた送電線路
用の避雷装置が設置されるようになってきた。(Prior technology) In order to prevent overhead power transmission lines from snow damage, prevent momentary power outages and voltage drops, etc., and improve the reliability of power supply, transmission lines using zinc oxide (ZnO) elements have been introduced in recent years for the towers of overhead power transmission lines. Lightning arresters have begun to be installed.
この避雷装置は常時架空送電系統に接続されている場合
、避雷装置内の限流要素、即ちＺｎＯが劣化するため、
避雷装置の系統の間に直列ギャップを設けている。この
直列ギャップの機能は、常時は限流素子（ＺｎＯ）に電
圧がかかるのを防ぎ、雷撃時にはじめて閃絡するように
設計されているが、もし、避雷装置が故障（短絡）状態
となっても、遮断器再投入（強制送電）が可能となるよ
うに、開閉サージでは閃絡しないように設定されている
。When this lightning arrester is constantly connected to the overhead power transmission system, the current limiting element in the lightning arrester, that is, ZnO, deteriorates.
A series gap is provided between the lightning arrester systems. The function of this series gap is to prevent voltage from being applied to the current-limiting element (ZnO) at all times, and is designed to cause a flash only in the event of a lightning strike. However, if the lightning arrester becomes malfunctioning (short circuit), In order to enable the circuit breaker to be re-closed (forced power transmission), the circuit breaker is also set so that it will not flash during a switching surge.
（解決しようとする課題）
上述したように、従来の架空送電線路用避雷システムに
おける送電鉄塔に設置する避雷装置には、開閉サージ耐
電圧以上の直列ギャップを設ける必要があった。(Problems to be Solved) As described above, it is necessary to provide a series gap greater than the switching surge withstand voltage in the lightning arrester installed on the power transmission tower in the conventional lightning protection system for overhead power transmission lines.
しかしながら、開閉サージ耐電圧以上の直列ギャップを
設けた場合、雷サージで限流素子が動作するまでに、即
ち直列ギャップが閃絡するまでに、数百ｎｓ〜数ｎｓの
時間遅れが生じる。一方避雷装置の本体碍子側にはアー
クホーンが取付けられているため、直列ギャップの動作
遅れの間に碍子のアークホーンが動作（閃絡）してしま
うおそれがあった。However, when a series gap with a switching surge withstand voltage or higher is provided, a time delay of several hundred ns to several ns occurs before the current limiting element operates due to a lightning surge, that is, before the series gap flashes. On the other hand, since the arc horn is attached to the insulator side of the main body of the lightning arrester, there is a risk that the arc horn of the insulator may operate (flash short) during the delay in the operation of the series gap.
又直列ギャップ長を十分短かくすれば、上述のように碍
子本体のアークホーンが先に閃絡することは避けられる
が、避雷装置故障（短絡）時に再送電すると、その投入
サージで直列ギャップが閃絡するという問題があった。Also, if the series gap length is made sufficiently short, it is possible to avoid flashing of the arc horn of the insulator body first as described above, but if the power is retransmitted when the lightning arrester fails (short circuit), the series gap will be shortened by the surge. There was a problem with flashing.
（課題を解決するための手段）
本発明は上述の問題点を解消した架空送電線路用避雷シ
ステムを提供するもので、その特徴は、変電所出口の送
電鉄塔に他の鉄塔の避雷器よりも直列ギャップ長の短か
い開閉サージ吸収用アレスタを設置したことにある。(Means for Solving the Problems) The present invention provides a lightning arrester system for overhead power transmission lines that solves the above-mentioned problems. This is due to the installation of an arrester for absorbing opening/closing surges with a short gap length.
（作用）
本発明の避雷システムにおいては、変電所出口の送電鉄
塔に他の鉄塔の避雷器よりも直列ギャップ長の短かい開
閉サージ吸収用アレスタを設置することによって、開閉
サージ電圧を制限する。これによって、その他の鉄塔に
設置した避雷装置の直列ギャップ長も短かくすることが
できる。直列ギャップ長を短かくした場合、直列ギャッ
プは碍子本体のアークホーンより十分低い電圧で閃絡す
るため、より確実に避雷装置を動作させることが出来る
。(Function) In the lightning protection system of the present invention, switching surge voltage is limited by installing a switching surge absorbing arrester with a shorter series gap length than the lightning arresters of other towers on the transmission tower at the exit of the substation. As a result, the series gap lengths of lightning arresters installed on other towers can also be shortened. When the series gap length is shortened, the series gap flashes at a sufficiently lower voltage than the arcing horn of the insulator body, so the lightning arrester can be operated more reliably.
又変電所出口に、開閉サージ吸収用アレスタを複数個設
置し、さらにアレスタ故障時に系統切離し機構を持たせ
ることにより、開閉サージ吸収用アレスタが故障しても
、故障したアレスタを切離し、残りの健全な開閉サージ
吸収用アレスタにより開閉サージ電圧を制限することに
よって遮断器の再投入が可能となる。In addition, by installing multiple arresters for absorbing switching surges at the substation exit and providing a system disconnection mechanism in the event of an arrester failure, even if the arrester for absorbing switching surges fails, the failed arrester can be disconnected and the remaining healthy The circuit breaker can be restarted by limiting the switching surge voltage using a switching surge absorbing arrester.
（実施例）
第１図は本発明の架空送電線路用避雷システムの具体例
の説明図である。(Example) FIG. 1 is an explanatory diagram of a specific example of the lightning protection system for overhead power transmission lines of the present invention.
図面において、Ａは変電所、Ｂｌ〜Ｂ６は送電鉄塔、Ｃ
は架空送電線である。上記送電鉄塔Ｂ、〜Ｂ６のうち、
変電所出口の鉄塔Ｂ１、あるいは該鉄塔Ｂ□を含み、こ
れに続く鉄塔、例えばＢ２、Ｂ３に開閉サージ吸収用ア
レスタを設置する。In the drawing, A is a substation, Bl to B6 are transmission towers, and C
is an overhead power line. Among the above transmission towers B, ~B6,
A switching surge absorbing arrester is installed on the steel tower B1 at the exit of the substation, or on the steel towers following this including the steel tower B□, such as B2 and B3.
第２図は変電所出口及びこれに続く複数の送電鉄塔に設
置する開閉サージ吸収用アレスタ、第３図は上記を除い
た送電鉄塔に設置する避雷装置のそれぞれ説明図である
。FIG. 2 is an explanatory diagram of a switching surge absorbing arrester installed at the exit of a substation and a plurality of transmission towers following the substation, and FIG. 3 is an explanatory diagram of a lightning arrester installed at a transmission tower other than the above.
図面において、（１）は架空送電線、（２）は直列ギャ
ップ、（３）は碍子（４）本体のアーキングホーン、（
５）は送電鉄塔のアーム、（６）は開閉サージ吸収用ア
レスタ、（７）は避雷装置、（８）は開閉サージ吸収用
アレスタに取付けた系統切離し機構である。In the drawing, (1) is the overhead power transmission line, (2) is the series gap, (3) is the arcing horn of the insulator (4) body, (
5) is an arm of a power transmission tower, (6) is an arrester for absorbing switching surges, (7) is a lightning arrester, and (8) is a system isolation mechanism attached to the arrester for absorbing switching surges.
第２図に示す変電所出口の送電鉄塔（引留鉄塔を含む）
に設置する開閉サージ吸収用アレスタ（６）の直列ギャ
ップ（２）長（Ｌｌ）は、その他の鉄塔に設置する避雷
装置（７）の直列ギヤツブ長旨
（Ｂ２）より短かく、轟用周波に耐えるまで可能な限り
短か＜シ、変電所からの開閉サージの侵入に対して必ず
動作するようにする。又このアレスタはサージ耐量を大
きクシ、繰返しのサージ印加に対しても劣化が生じない
ようにする。Transmission tower at the exit of the substation (including the detention tower) shown in Figure 2
The series gap (2) length (Ll) of the switching surge absorption arrester (6) installed in the tower is shorter than the series gear tooth length (B2) of the lightning arrester (7) installed in the other towers, and The system must be able to withstand switching surges from substations for as short a period as possible, and must be able to withstand the intrusion of switching surges from substations. Additionally, this arrester has a large surge withstand capacity and prevents deterioration even under repeated surge applications.
さらに、この開閉サージ吸収用アレスタ（６）には、ア
レスタの故障時、系統から切離す機構（８）を設けてあ
り、故障時にはギャップ長（Ｌ、）を広げる機能を持た
せ、開閉サージ及び雷サージでは動作しない長さまで広
げる。Furthermore, this opening/closing surge absorbing arrester (6) is provided with a mechanism (8) that disconnects it from the system when the arrester fails, and has the function of widening the gap length (L,) in the event of a failure. Expand it to a length that does not work during lightning surges.
第３図に示す避雷装置（７）の直列ギャップ長（Ｂ２）
は、従来の避雷装置の直列ギャップ長より十分短かクシ
、必ず碍子本体のアークホーン（３）より先に閃絡する
程度にする。又交流電圧では閃絡しないが、開閉サージ
では閃絡してもよいものとする。Series gap length (B2) of lightning arrester (7) shown in Figure 3
should be sufficiently shorter than the series gap length of a conventional lightning arrester, and should be such that flashing occurs before the arc horn (3) of the insulator body. Also, although there will be no flashing under AC voltage, flashing may occur under switching surges.
（発明の効果）
以上説明したように、本発明の架空送電線路用避雷シス
テムによれば、変電所出口の送電鉄塔に開閉サージ吸収
用アレスタを設置することにより、その他の鉄塔に設置
する避雷装置の直列ギャップ長を短かくすることができ
、より確実に避雷装置を動作させることが可能となる。(Effects of the Invention) As explained above, according to the lightning arrester system for overhead power transmission lines of the present invention, by installing a switching surge absorbing arrester on a power transmission tower at the exit of a substation, lightning protection devices installed on other towers can be installed. The series gap length can be shortened, and the lightning arrester can be operated more reliably.
又開閉サージ吸収用アレスタに故障時系統切離し機構を
持たせることによって、故障アレスタを切離し、再送電
が可能となる。Furthermore, by providing the switching surge absorbing arrester with a system disconnection mechanism in the event of a failure, the failed arrester can be disconnected and power can be retransmitted.
第１図は本発明の架空送電線路用避雷システムの具体例
の説明図である。
第２図は変電所出口の送電鉄塔に設置する開閉サージ吸
収用アレスタ、第３図はその他の鉄塔に設置する避雷装
置のそれぞれ説明図である。
Ａ・・・変電所、Ｂｌ〜Ｂ８・・・送電鉄塔、Ｃ・・・
架空送電線。
１・・・架空送電線、２・・・直列ギャップ、３・・・
碍子本体のアーキングホーン、４・・・碍子、５・・・
送電鉄塔のアーム、６・・・開閉サージ吸収用アレスタ
、７・・・避雷装置、８・・・故障時系統切離し機構。
寥
２
図FIG. 1 is an explanatory diagram of a specific example of the lightning protection system for overhead power transmission lines according to the present invention. FIG. 2 is an explanatory diagram of a switching surge absorbing arrester installed on a power transmission tower at the exit of a substation, and FIG. 3 is an explanatory diagram of a lightning arrester installed on other towers. A... Substation, Bl~B8... Transmission tower, C...
Overhead power lines. 1... Overhead power transmission line, 2... Series gap, 3...
Arching horn of insulator body, 4... Insulator, 5...
Arm of power transmission tower, 6... Arrester for opening/closing surge absorption, 7... Lightning arrester, 8... Grid disconnection mechanism in case of failure. Figure 2
Claims (2)
送電線路において、変電所出口の送電鉄塔に他の鉄塔の
避雷器よりも直列ギャップ長の短かい開閉サージ吸収用
アレスタを設置したことを特徴とする架空送電線路用避
雷システム。(1) In an overhead power transmission line in which a series gap arrester is installed on a power transmission tower, a switching surge absorption arrester with a shorter series gap length than the lightning arresters on other towers is installed on the power transmission tower at the exit of a substation. A lightning protection system for overhead power transmission lines.
に系統切離し機構を持たせたことを特徴とする請求項（
１）記載の架空送電線路用避雷システム。(2) A claim (
1) Lightning protection system for overhead power transmission lines as described above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1461090A JPH03219508A (en) | 1990-01-23 | 1990-01-23 | Lightning protection system for overhead power transmission lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1461090A JPH03219508A (en) | 1990-01-23 | 1990-01-23 | Lightning protection system for overhead power transmission lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03219508A true JPH03219508A (en) | 1991-09-26 |
Family
ID=11865970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1461090A Pending JPH03219508A (en) | 1990-01-23 | 1990-01-23 | Lightning protection system for overhead power transmission lines |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03219508A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817248A (en) * | 2020-06-05 | 2020-10-23 | 云南电网有限责任公司大理供电局 | Comprehensive lightning protection method for 35kV power transmission line |
| CN113824103A (en) * | 2021-11-22 | 2021-12-21 | 山东中呈防雷科技有限公司 | Automatic alarm device for lightning protection |
-
1990
- 1990-01-23 JP JP1461090A patent/JPH03219508A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111817248A (en) * | 2020-06-05 | 2020-10-23 | 云南电网有限责任公司大理供电局 | Comprehensive lightning protection method for 35kV power transmission line |
| CN113824103A (en) * | 2021-11-22 | 2021-12-21 | 山东中呈防雷科技有限公司 | Automatic alarm device for lightning protection |
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