JP2002075096A - Tension-resistant lightning arrester - Google Patents
Tension-resistant lightning arresterInfo
- Publication number
- JP2002075096A JP2002075096A JP2000254304A JP2000254304A JP2002075096A JP 2002075096 A JP2002075096 A JP 2002075096A JP 2000254304 A JP2000254304 A JP 2000254304A JP 2000254304 A JP2000254304 A JP 2000254304A JP 2002075096 A JP2002075096 A JP 2002075096A
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- JP
- Japan
- Prior art keywords
- tension insulator
- tension
- insulator
- arrester
- lightning
- 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.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は耐張耐雷装置に関
し、詳しくは、雷サージ等による異常電圧の発生時、送
配電線の周辺設備を雷サージ等から保護する避雷器を、
送配電線に設置された耐張碍子に付設した構造の耐張耐
雷装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightning protection device, and more particularly, to a lightning arrester that protects peripheral equipment of transmission and distribution lines from lightning surge when abnormal voltage occurs due to lightning surge or the like.
The present invention relates to a tensile strength lightning proof device having a structure attached to a tensile insulator installed in a transmission and distribution line.
【０００２】[0002]
【従来の技術】例えば、高圧や特高の送配電線に設けら
れた耐張碍子付近への落雷時、雷サージ等による異常電
圧が発生した際、６６００Ｖ用の手動区分開閉器などの
送配電線の周辺設備を雷サージ等から保護するため、耐
張碍子の接地側と課電側との間に避雷器を取り付けるこ
とが望ましい。なお、前記耐張碍子の接地側は、電柱に
腕金を介して取り付けられ、その課電側は送配電線に金
具を介して取り付けられている。2. Description of the Related Art For example, when a lightning strike occurs near a tension insulator provided on a high-voltage or extra-high transmission / distribution line, or when an abnormal voltage is generated due to a lightning surge or the like, transmission and distribution of a 6600V manual section switch is performed. It is desirable to install a lightning arrester between the ground side and the power receiving side of the tension insulator to protect the peripheral equipment of the electric wire from lightning surge and the like. The grounding side of the tension insulator is attached to a power pole via a metal arm, and the power receiving side is attached to a power transmission and distribution line via a metal fitting.
【０００３】前記避雷器は、サージ電圧に対しては低抵
抗、送配電線の通常の対地電圧に対しては高抵抗を示す
非直線性の電流電圧特性を有するＺｎＯ等からなる限流
要素を絶縁外被体内に気密的に収納した構造を有し、そ
の絶縁外被体の上下端に前記限流要素と電気的に接続さ
れた課電側および接地側端子を導出させている。この避
雷器の課電側端子には、先端を耐張碍子に気中間隙を介
して近接配置したアークホーンが電気的かつ機械的に接
続されている。The surge arrester insulates a current limiting element made of ZnO or the like having a non-linear current-voltage characteristic showing a low resistance against surge voltage and a high resistance against a normal ground voltage of a transmission and distribution line. It has a structure that is hermetically housed in the outer casing, and leads to the upper and lower ends of the insulating outer casing the power-supply-side and ground-side terminals that are electrically connected to the current-limiting element. An arc horn whose tip is disposed close to a tension insulator via an air gap is electrically and mechanically connected to the power-supply-side terminal of this arrester.
【０００４】雷サージ等による異常電圧が発生すると、
送配電線の耐張碍子付近からフラッシオーバーしてアー
クホーンに捕捉され、避雷器の限流要素が低抵抗値とな
ってこれを瞬時に大地に逃がす。これにより、続流を抑
制遮断して続流アークによる断線などを防止する。一
方、雷サージ等による異常電圧が消滅すれば、避雷器の
限流要素が高抵抗値となって通常の対地電圧を遮断す
る。このような避雷器の限流要素による弁作用でもっ
て、送配電線の周辺設備を雷サージ等から保護してい
る。When an abnormal voltage occurs due to a lightning surge or the like,
The flashover from the vicinity of the tension insulator of the transmission and distribution line is captured by the arc horn, and the current limiting element of the surge arrester has a low resistance value and instantly escapes to the ground. As a result, the continuation current is suppressed and cut off to prevent disconnection or the like due to the continuation arc. On the other hand, when the abnormal voltage due to the lightning surge or the like disappears, the current limiting element of the surge arrester has a high resistance value and cuts off the normal ground voltage. The peripheral equipment of the transmission and distribution line is protected from lightning surge and the like by the valve action by the current limiting element of the lightning arrester.
【０００５】[0005]
【発明が解決しようとする課題】ところで、前述したよ
うに耐張碍子は、その接地側が腕金を介して電柱に取り
付けられ、課電側が金具を介して送配電線に取り付けら
れた状態で設置されているのが一般的である。このよう
な使用形態では、耐張碍子付近に、配電用変圧器や開閉
器などの多数の周辺設備が設置されているため、前記耐
張碍子の周辺設備が複雑で、従来から、耐張碍子の周辺
に避雷器を付設できなかったというのが現状であった。By the way, as described above, the tension insulator is installed with its grounding side attached to a power pole via a metal arm and its power receiving side attached to a power transmission and distribution line via a metal fitting. It is common that it is. In such a usage form, since a large number of peripheral facilities such as a distribution transformer and a switch are installed near the tension insulator, the peripheral facilities of the tension insulator are complicated, and conventionally, the tension insulator is not used. It was not possible to install a lightning arrestor around the area.
【０００６】そこで、本発明は前記問題点に鑑みて提案
されたもので、その目的とするところは、既存設備の耐
張碍子に改良を加えることなく、避雷器を簡易に付設す
ることができる取り付け構造を有する耐張耐雷装置を提
供することにある。Accordingly, the present invention has been proposed in view of the above-mentioned problems, and an object of the present invention is to provide a lightning arrester that can be easily attached without modifying the tension insulator of existing equipment. An object of the present invention is to provide a tension lightning proof device having a structure.
【０００７】[0007]
【課題を解決するための手段】前記目的を達成するため
の技術的手段として、請求項１に係る発明は、送配電線
に設置された耐張碍子の接地側に、非直線性の電流電圧
特性を有する限流要素を備えた避雷器を取り付け金具を
介して電気的に接続し、前記避雷器を前記取り付け金具
により耐張碍子に支持した状態で平行配置すると共に、
前記避雷器の課電側から延びるアークホーンを気中間隙
を介して前記耐張碍子と対向配置したことを特徴とす
る。According to a first aspect of the present invention, a non-linear current-voltage is provided on the ground side of a tension insulator installed in a transmission and distribution line. A lightning arrester provided with a current limiting element having characteristics is electrically connected via a mounting bracket, and the lightning arrester is arranged in parallel with the lightning arrester supported on a tension insulator by the mounting bracket.
An arc horn extending from the power application side of the lightning arrester is disposed to face the tension insulator via an air gap.
【０００８】この請求項１の発明では、避雷器の接地側
端子を耐張碍子の接地側に電気的かつ機械的に接続する
手段として、取り付け金具を利用することにより、前記
避雷器を耐張碍子に対して近接させて平行配置する。一
方、前記避雷器の課電側端子から延びるアークホーンを
気中間隙を介して耐張碍子と対向配置することにより、
耐張碍子からのフラッシオーバーを捕捉可能とする。こ
の取り付け構造により、耐張碍子に避雷器を簡易に付設
することが実現容易となる。According to the first aspect of the present invention, the lightning arrester is connected to the grounding side of the insulator by electrically and mechanically connecting the ground terminal of the arrester to the grounding side of the insulator. And placed in parallel with each other. On the other hand, by disposing the arc horn extending from the power-supply-side terminal of the lightning arrester to the tension insulator via the air gap,
Flashover from tension insulators can be captured. With this mounting structure, it becomes easy to easily attach an arrester to the tension insulator.
【０００９】請求項１の取り付け金具は、耐張碍子を抱
持する略Ｕ字状をなし、両端を締着ボルトにより耐張碍
子に締め付けることによりその耐張碍子に固定される金
具本体と、その金具本体の複数箇所で着脱可能なように
装着され、前記避雷器を支持する金具片とを備え、前記
金具本体に対する金具片の取り付け位置を選択すること
により、耐張碍子に対する避雷器の相対位置を変更可能
としたことを特徴とする（請求項２）。According to a first aspect of the present invention, there is provided a mounting member having a substantially U-shape for holding a tension insulator, and a bracket body fixed to the tension insulator by fastening both ends to the tension insulator with fastening bolts; A metal piece that is detachably mounted at a plurality of positions of the metal body and that supports the lightning arrester, and by selecting a mounting position of the metal piece with respect to the metal body, the relative position of the lightning arrester with respect to the tension insulator is determined. It can be changed (claim 2).
【００１０】請求項２の発明では、金具本体に対する金
具片の取り付け位置を選択することにより、耐張碍子に
対する避雷器の相対位置を変更可能としたことにより、
耐張碍子に対して避雷器を取り付ける際の自由度が向上
し、耐張碍子の設置状況に迅速に対応することができ
る。According to the second aspect of the present invention, the relative position of the surge arrester with respect to the tension insulator can be changed by selecting the mounting position of the metal piece with respect to the metal body.
The degree of freedom in attaching the lightning arrester to the tension insulator is improved, and it is possible to quickly respond to the installation state of the tension insulator.
【００１１】請求項１のアークホーンは、そのホーン先
端部が先鋭な形状を有し、耐張碍子の課電側に被着され
た絶縁カバーの開口端部に位置して気中間隙に露呈する
耐張碍子の表面部位と前記ホーン先端部との間で放電可
能としたことを特徴とする（請求項３）。In the arc horn according to the first aspect, the tip of the horn has a sharp shape, and is located at the open end of the insulating cover attached to the power application side of the tension insulator and is exposed to the air gap. The discharge is enabled between the surface portion of the tension insulator and the tip of the horn.
【００１２】請求項３の発明では、先鋭な形状を有する
アークホーン先端部を、耐張碍子の課電側に被着された
絶縁カバーの開口端部に位置して気中間隙に露呈する耐
張碍子の表面部位との間で放電可能としたことにより、
耐張碍子に絶縁カバーを装着した状態のままでも、その
絶縁カバーの開口端部に位置して気中間隙に露呈する耐
張碍子の表面部位からのフラッシオーバーを確実に捕捉
することができる。According to the third aspect of the present invention, the tip of the arc horn having a sharp shape is located at the open end of the insulating cover attached to the power application side of the tension insulator, and is exposed to the air gap. By enabling discharge between the surface of the tension insulator,
Even when the insulating cover is mounted on the tension insulator, the flashover from the surface portion of the tension insulator exposed to the air gap located at the opening end of the insulating cover can be reliably captured.
【００１３】[0013]
【発明の実施の形態】本発明に係る耐張耐雷装置の実施
形態を以下に詳述する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a tension lightning proof device according to the present invention will be described in detail below.
【００１４】図１に示す実施形態の耐張耐雷装置は、例
えば、高圧や特高の送配電線に設けられた耐張碍子付近
への落雷時、雷サージ等による異常電圧が発生した際、
６６００Ｖ用の手動区分開閉器などの周辺設備を雷サー
ジ等から保護するものに適用した例示である。The tensile strength lightning proof device of the embodiment shown in FIG. 1 is used, for example, when a lightning strike occurs near a tension insulator provided on a high-voltage or extra-high power transmission and distribution line, or when an abnormal voltage is generated due to a lightning surge or the like.
This is an example in which the present invention is applied to a device for protecting peripheral equipment such as a 6600 V manual switchgear from a lightning surge or the like.
【００１５】この耐張耐雷装置は、送配電線に設けられ
た耐張碍子１の接地側２ａに取り付け金具３により避雷
器４の接地側端子５を固定した構造を具備する。This tension-resistant lightning protection device has a structure in which a ground terminal 5 of a lightning arrester 4 is fixed to a ground side 2a of a tension insulator 1 provided on a transmission and distribution line by a mounting bracket 3.
【００１６】避雷器４は、図２に示すようにサージ電圧
に対しては低抵抗、送配電線の通常の対地電圧に対して
は高抵抗を示す非直線性の電流電圧特性を有するＺｎＯ
等からなる限流要素６を絶縁外被体７内に気密的に収納
した構造を有し、その絶縁外被体７の上下端に前記限流
要素６と電気的に接続された課電側端子８および接地側
端子５を導出させている。前記絶縁外被体７には、耐候
性および電気絶縁性に優れた高分子（ポリマー）材料が
使用可能である。なお、前記避雷器４について、図示の
構造のものはあくまでも一つの例示であり、他の構造の
ものでも適用可能である。As shown in FIG. 2, the surge arrester 4 has a non-linear current-voltage characteristic of ZnO having a low resistance to surge voltage and a high resistance to a normal ground voltage of a transmission and distribution line.
And a current limiting element electrically connected to the current limiting element 6 at upper and lower ends of the insulating jacket 7. The terminal 8 and the ground terminal 5 are led out. For the insulating jacket 7, a polymer material having excellent weather resistance and electrical insulation can be used. The lightning arrester 4 having the structure shown in the drawing is merely an example, and any other structure can be applied.
【００１７】この避雷器４の課電側端子８には、先端を
耐張碍子１に気中間隙９を介して近接配置したアークホ
ーン１０が電気的かつ機械的に接続されている。An arc horn 10 whose tip is disposed close to the tension insulator 1 via an air gap 9 is electrically and mechanically connected to the power application side terminal 8 of the surge arrester 4.
【００１８】前記取り付け金具３は、例えばステンレス
製のもので、図３に示すように耐張碍子１を抱持する略
Ｕ字状をなし〔同図（ａ）参照〕、ほぼ全周に亘って補
強用のリブ１１を有し、耐張碍子１を抱持して締め付け
固定する金具本体１２ａと、その金具本体１２ａに着脱
自在に装着され、前記避雷器４を支持する第１および第
２金具片１２ｂ，１２ｃとからなる。The mounting bracket 3 is made of, for example, stainless steel, and has a substantially U-shape for holding the tension insulator 1 as shown in FIG. 3 (see FIG. 3A) and extends over substantially the entire circumference. Metal body 12a having a reinforcing rib 11 for holding and tightening and fixing the tension insulator 1; first and second metal fittings which are detachably mounted on the metal body 12a and support the lightning arrester 4; Pieces 12b and 12c.
【００１９】金具本体１２ａの両端には、耐張碍子１を
抱持して締め付ける締着ボルト１３の基端部１３ａ（図
６参照）が挿入される孔１４および締着ボルト１３の先
端部１３ｂが挿入される切り欠き１５をそれぞれ形成し
ている。このように一方を孔１４、他方を切り欠き１５
とすることにより締着ボルト１３の着脱を容易にする。
金具本体１２ａの側壁部には、第１金具片１２ｂを取り
付けるための二つのボルト用角孔１６を形成している
〔図３（ｂ）（ｃ）参照〕。なお、耐張碍子１を抱持し
て締め付けたときに耐張碍子１の固定を確実にするため
に内側への切り起こし片１７を有する。At both ends of the metal fitting body 12a, a hole 14 into which a base end portion 13a (see FIG. 6) of a fastening bolt 13 for holding and tightening the tension insulator 1 is inserted, and a distal end portion 13b of the fastening bolt 13 Are formed, respectively. Thus, one is a hole 14 and the other is a notch 15
By doing so, attachment and detachment of the fastening bolt 13 is facilitated.
On the side wall of the metal fitting body 12a, two bolt holes 16 for attaching the first metal piece 12b are formed (see FIGS. 3B and 3C). In order to secure the tension insulator 1 when the tension insulator 1 is held and tightened, a cut-and-raised piece 17 is provided inside.
【００２０】この金具本体１２ａに略コ字型帯板状の第
１金具片１２ｂ〔図４（ａ）〜（ｄ）参照〕の一端部２
４を連結し、第１金具片１２ｂの他端部２５と略Ｌ字型
帯板状の第２金具片１２ｃの一端部２６とを衝合させて
ボルト・ナットにより固着し、第２金具片１２ｃの他端
部２７を避雷器４の接地側端子５に固着する。前記第１
金具片１２ｂの他端部２５に耐張碍子１の軸方向（長手
方向）に沿う長穴１８が形成され、その長穴１８に沿う
ように補強用のリブ１９が形成されている。この長穴１
８を利用して第１金具片１２ｂに対して第２金具片１２
ｃをスライドさせることにより耐張碍子１に対して避雷
器４を前記軸方向に位置調整可能としている。この位置
調整は、避雷器４の課電側端子８に取り付けられたアー
クホーン１０と耐張碍子１との間の気中間隙９の寸法を
設定する場合に行われ、前記避雷器４の軸方向寸法（一
般用または耐塩用で異なる）によっても行う必要性があ
る。なお、前記長穴１８は、第２金具片１２ｃの第１金
具片１２ｂと衝合する一端部２６に形成するようにして
もよい。また、第２金具片１２ｃの両端部２６，２７に
は、第１金具片１２ｂおよび避雷器４を取り付けるため
のボルト用孔（図示せず）が穿設されている。One end portion 2 of a substantially U-shaped strip-shaped first metal piece 12b (see FIGS. 4A to 4D) is attached to the metal body 12a.
4, the other end 25 of the first metal piece 12b and the one end 26 of the substantially L-shaped strip-shaped second metal piece 12c are fixed to each other by bolts and nuts, and the second metal piece is fixed. The other end 27 of 12c is fixed to the ground terminal 5 of the surge arrester 4. The first
An elongated hole 18 is formed in the other end portion 25 of the metal piece 12b along the axial direction (longitudinal direction) of the tension insulator 1, and a reinforcing rib 19 is formed along the elongated hole 18. This long hole 1
8 using the second metal piece 12 with respect to the first metal piece 12b.
The position of the lightning arrester 4 with respect to the tension insulator 1 can be adjusted in the axial direction by sliding c. This position adjustment is performed when the size of the air gap 9 between the arc horn 10 attached to the power receiving side terminal 8 of the surge arrester 4 and the tension insulator 1 is set, and the axial dimension of the surge arrester 4 is set. (Depending on general use or salt resistance). The elongated hole 18 may be formed at one end 26 of the second metal piece 12c which abuts on the first metal piece 12b. Bolt holes (not shown) for attaching the first metal piece 12b and the lightning arrester 4 are formed in both ends 26 and 27 of the second metal piece 12c.
【００２１】さらに、避雷器４の課電側端子８には、ア
ークホーン１０が耐張碍子側へ延びるように固着されて
いる。このアークホーン１０は、図５（ａ）〜（ｃ）に
示すように例えばステンレス製の帯板状部材であり、そ
の長手方向の両側には補強用のリブ２０を形成して所望
の強度を確保しており、また、ホーン先端部２１は、屈
曲形成された先鋭な形状を有し、耐張碍子１の課電側２
ｂに気中間隙９を介して近接配置されている。Further, an arc horn 10 is fixed to the power application side terminal 8 of the lightning arrester 4 so as to extend to the tension insulator side. The arc horn 10 is, for example, a strip member made of stainless steel as shown in FIGS. 5 (a) to 5 (c). Reinforcing ribs 20 are formed on both sides in the longitudinal direction to provide a desired strength. In addition, the horn tip 21 has a sharply bent shape, and the horn tip 21 has a power receiving side 2 of the tension insulator 1.
b is disposed in proximity to the air gap 9.
【００２２】この耐張耐雷装置では、耐張碍子１の接地
側２ａに取り付け金具３の金具本体１２ａを締め付けボ
ルト１３により締め付け固定する。この金具本体１２ａ
の二箇所に設けられた支持アーム取り付け用角孔１６の
いずれか、つまり、耐張碍子１に対して避雷器４を配置
すべき位置側にある角孔１６を選択し、その角孔１６を
利用して第１金具片１２ｂを金具本体１２ａにボルト等
により連結固定する。前記金具本体１２ａに連結された
第１金具片１２ｂに対して第２金具片１２ｃをボルト・
ナットで固定し、その第２金具片１２ｃの他端部２７に
避雷器４の接地側端子５をボルトにより固着する。この
ようにして取り付け金具３により耐張碍子１に支持され
た避雷器４は、その耐張碍子１に近接した状態で平行に
配置される。In this tension-resistant lightning protection device, the metal fitting body 12a of the mounting metal fitting 3 is fastened and fixed to the grounding side 2a of the strain insulator 1 by the fastening bolt 13. This bracket body 12a
Of the support arm mounting square holes 16 provided at the two positions, that is, the square hole 16 at the position where the lightning arrester 4 is to be disposed with respect to the tension insulator 1, and use the square hole 16. Then, the first metal piece 12b is connected and fixed to the metal body 12a with a bolt or the like. The second metal piece 12c is bolted to the first metal piece 12b connected to the metal body 12a.
The ground terminal 5 of the lightning arrester 4 is fixed to the other end 27 of the second metal piece 12c by a bolt. The lightning arrester 4 supported on the tension insulator 1 by the mounting bracket 3 in this manner is arranged in parallel in a state close to the tension insulator 1.
【００２３】このようにして、図６（ａ）（ｂ）に示す
ように避雷器４は、耐張碍子１に対して例えば左右いず
れかの下方斜め４５°の位置に選択的に配置される。つ
まり、送配電線が三相の場合、通常、両外側に位置する
二本の送配電線について避雷器４を装着すればよく、そ
の二本の送配電線に設けられたそれぞれの耐張碍子１の
外側に避雷器４を取り付けることになり、一方の耐張碍
子１では、図６（ａ）に示すように図中の右下方向斜め
４５°の位置に避雷器４を取り付ければ、他方の耐張碍
子１では、図６（ｂ）に示すように反対側である図中の
左下方向斜め４５°に避雷器４を取り付けることにな
る。In this way, as shown in FIGS. 6A and 6B, the lightning arrester 4 is selectively disposed at, for example, a 45 ° lower right or left side with respect to the tension insulator 1. That is, when the transmission and distribution lines are three-phase, the lightning arresters 4 may be usually mounted on two transmission and distribution lines located on both outer sides, and each of the tension insulators 1 provided on the two transmission and distribution lines may be used. The lightning arrester 4 is attached to the outer side of the antenna. In the tension insulator 1, if the lightning arrester 4 is attached at an angle of 45 ° in the lower right direction in the figure as shown in FIG. In the insulator 1, as shown in FIG. 6 (b), the lightning arrester 4 is attached at an angle of 45 ° in the lower left direction in the figure, which is the opposite side.
【００２４】この図６（ａ）或いは（ｂ）のいずれの場
合も、取り付け金具３の金具本体１２ａを、その一端に
位置する孔１４よりも他端に位置する切り欠き１５が下
方位置にくるような向きで耐張碍子１に装着するように
している。この金具本体１２ａを常に前述の向きで耐張
碍子１に装着することにより、前記金具本体１２ａの孔
１４に締着ボルト１３の基端部１３ａを挿入して引掛け
係止した状態で、その締着ボルト１３の先端部１３ｂを
金具本体１２ａの切り欠き１５に着脱することができる
ようにしている。In either case of FIG. 6A or 6B, the notch 15 located at the other end of the fitting main body 12a of the fitting 3 with respect to the hole 14 located at one end thereof is located at the lower position. The tension insulator 1 is mounted in such a direction. By mounting the metal fitting body 12a on the tension insulator 1 in the above-described direction at all times, the base end 13a of the fastening bolt 13 is inserted into the hole 14 of the metal fitting body 12a and hooked and locked. The distal end portion 13b of the fastening bolt 13 can be attached to and detached from the notch 15 of the metal fitting body 12a.
【００２５】耐張碍子１に平行配置された避雷器４の課
電側端子８から延びるアークホーン１０は、そのホーン
先端部２１を気中間隙９を介して耐張碍子１の課電側２
ｂに対向させて配置されている。避雷器４において、ア
ークホーン１０と耐張碍子１間で所望の放電特性（放電
開始電圧）を得るために、気中間隙９の寸法を設定する
には、取り付け金具３の第１金具片１２ｂに設けられた
長穴１８を利用し、第１金具片１２ｂに対して第２金具
片１２ｃをスライドさせ、避雷器４のアークホーン１０
を軸方向に位置調整することにより実現される。前記ア
ークホーン１０は、そのホーン先端部２１が屈曲した先
鋭な形状を有し、耐張碍子１の課電側２ｂに被着された
絶縁カバー２３の開口端部２３ａに位置して気中間隙９
に露呈する耐張碍子１の表面部位２２と前記ホーン先端
部２１との間で放電可能としている。The arc horn 10 extending from the power-supply-side terminal 8 of the surge arrester 4 disposed in parallel with the tension insulator 1 is connected to the power-supply side 2 of the tension insulator 1 via the air gap 9 via the air gap 9.
b. In order to obtain a desired discharge characteristic (discharge starting voltage) between the arc horn 10 and the tension insulator 1 in the lightning arrester 4, the dimensions of the air gap 9 are set by the first metal piece 12 b of the mounting metal 3. Using the elongated hole 18 provided, the second metal piece 12c is slid with respect to the first metal piece 12b, and the arc horn 10
Is realized by adjusting the position in the axial direction. The arc horn 10 has a sharp shape with a horn tip 21 bent, and is positioned at an open end 23a of an insulating cover 23 attached to the power application side 2b of the tension insulator 1, and has an air gap. 9
Between the surface portion 22 of the tension insulator 1 exposed to the horn and the horn tip 21.
【００２６】雷サージ等による異常電圧が発生すると、
送配電線の耐張碍子付近からフラッシオーバーしてアー
クホーン１０に捕捉され、避雷器４の限流要素６が低抵
抗値となってこれを瞬時に大地に逃がす。これにより、
続流を抑制遮断して続流アークによる断線などを防止す
る。ここで、耐張碍子１の課電側２ｂには絶縁カバー２
３が装着されているが、避雷器４のアークホーン１０と
耐張碍子１の課電側２ｂとの間に絶縁カバー２３が存在
していても、耐張碍子１に絶縁カバー２３を装着した状
態のままで、その絶縁カバー２３の開口端部２３ａに位
置して気中間隙９に露呈する耐張碍子１の表面部位２２
からのフラッシオーバーを確実に捕捉することができる
ので、前記絶縁カバー２３を除去する必要がなく、安定
した放電特性が得られる。When an abnormal voltage occurs due to a lightning surge or the like,
The flashover from the vicinity of the tension insulator of the transmission and distribution line is captured by the arc horn 10, and the current limiting element 6 of the lightning arrester 4 has a low resistance value and instantaneously escapes to the ground. This allows
Suppresses and blocks the continuation current to prevent disconnection due to the continuation arc. Here, an insulating cover 2 is provided on the power receiving side 2b of the tension insulator 1.
3 is attached, but the insulating cover 23 is attached to the tension insulator 1 even if the insulating cover 23 exists between the arc horn 10 of the lightning arrester 4 and the power receiving side 2b of the tension insulator 1. As it is, the surface portion 22 of the tension insulator 1 exposed to the air gap 9 at the opening end 23a of the insulating cover 23
Since it is possible to reliably capture the flashover from, it is not necessary to remove the insulating cover 23, and stable discharge characteristics can be obtained.
【００２７】一方、雷サージ等による異常電圧が消滅す
れば、避雷器４の限流要素６が高抵抗値となって通常の
対地電圧を遮断する。このような避雷器４の限流要素６
による弁作用でもって、送配電線の周辺設備を雷サージ
等から保護している。On the other hand, when the abnormal voltage due to the lightning surge or the like disappears, the current limiting element 6 of the surge arrester 4 has a high resistance value and cuts off the normal ground voltage. The current limiting element 6 of such an arrester 4
Protects the surrounding facilities of transmission and distribution lines from lightning surges and the like.
【００２８】[0028]
【発明の効果】請求項１に係る発明によれば、送配電線
に設置された耐張碍子の接地側に、非直線性の電流電圧
特性を有する限流要素を備えた避雷器を取り付け金具を
介して電気的に接続し、前記避雷器を前記取り付け金具
により耐張碍子に支持した状態で平行配置すると共に、
前記避雷器の課電側から延びるアークホーンを気中間隙
を介して前記耐張碍子と対向配置した構造としたことに
より、既存設備の耐張碍子に改良を加えることなく、避
雷器を簡易に付設することが実現容易となる。According to the first aspect of the present invention, a lightning arrester provided with a current limiting element having a non-linear current-voltage characteristic is mounted on a ground side of a tension insulator installed on a transmission and distribution line. Electrically connected through the arrester, and arranged in parallel with the lightning arrester supported by the tension insulator by the mounting bracket,
The arc horn extending from the power application side of the lightning arrester is configured to be opposed to the tension insulator via an air gap, so that the lightning arrester can be easily attached without making any improvement to the existing insulator. This can be easily realized.
【００２９】また、請求項２の発明のように、避雷器を
耐張碍子に固着する取り付け金具において、前記金具本
体に対する金具片の取り付け位置を選択することによ
り、耐張碍子に対する避雷器の相対位置を変更可能とし
たことにより、耐張碍子に対して避雷器を取り付ける際
の自由度が向上し、耐張碍子の設置状況に迅速に対応す
ることができる。According to the second aspect of the present invention, in the mounting bracket for fixing the lightning arrester to the tension insulator, the relative position of the lightning arrester to the tension insulator is selected by selecting the mounting position of the metal piece with respect to the metal fitting body. By making it possible to change, the degree of freedom when attaching a lightning arrester to the tension insulator is improved, and it is possible to quickly respond to the installation status of the tension insulator.
【００３０】さらに、請求項３の発明のように、先鋭な
形状を有するアークホーン先端部を、耐張碍子の課電側
に被着された絶縁カバーの開口端部に位置して気中間隙
に露呈する耐張碍子の表面部位との間で放電可能とした
ことにより、耐張碍子に絶縁カバーを装着した状態のま
までも、その絶縁カバーの開口端部に位置して気中間隙
に露呈する耐張碍子の表面部位からのフラッシオーバー
を確実に捕捉することができるので、安定した放電特性
が得られる。Further, the tip of the arc horn having a sharp shape is positioned at the open end of the insulating cover attached to the power receiving side of the tension insulator as in the third aspect of the present invention. By allowing discharge between the surface of the tension insulator exposed to the air, the insulation cover is attached to the tension insulator and exposed to the air gap at the open end of the insulation cover. Since the flashover from the surface portion of the tension insulator can be reliably captured, stable discharge characteristics can be obtained.
【図１】本発明に係る耐張耐雷装置の実施形態を示す正
面図である。FIG. 1 is a front view showing an embodiment of a tension lightning proof device according to the present invention.
【図２】図１の避雷器の内部構造を示す断面図である。FIG. 2 is a sectional view showing an internal structure of the lightning arrester of FIG. 1;
【図３】（ａ）は取り付け金具の金具本体を示す正面
図、（ｂ）はその左側面図、（ｃ）は右側面図、（ｄ）
はＡ矢視図、（ｅ）はＢ矢視図である。3A is a front view showing a metal fitting body of a mounting bracket, FIG. 3B is a left side view thereof, FIG. 3C is a right side view thereof, and FIG.
Is a view as seen from the arrow A, and FIG.
【図４】（ａ）は第１金具片を示す正面図、（ｂ）は左
側面図、（ｃ）は右側面図、（ｄ）は平面図である。4A is a front view showing a first metal piece, FIG. 4B is a left side view, FIG. 4C is a right side view, and FIG. 4D is a plan view.
【図５】（ａ）はアークホーンの正面図、（ｂ）はその
右側面図、（ｃ）は平面図である。5A is a front view of the arc horn, FIG. 5B is a right side view thereof, and FIG. 5C is a plan view thereof.
【図６】耐張碍子に対する避雷器の取り付け態様を示す
もので、（ａ）は避雷器を右下方向斜め４５°の位置に
取り付けた状態、（ｂ）は避雷器を左下方向斜め４５°
の位置に取り付けた状態をそれぞれ示す側面図である。FIGS. 6A and 6B show a mounting mode of the lightning arrester to the tension insulator. FIG. 6A shows a state in which the lightning arrester is mounted at an angle of 45 ° in the lower right direction, and FIG.
FIG. 6 is a side view showing a state of being attached to the position of FIG.
【符号の説明】 １ 耐張碍子 ２ａ 接地側 ２ｂ 課電側 ３ 取り付け金具 ４ 避雷器 ６ 限流要素 ９ 気中間隙 １０ アークホーン １２ａ 金具本体 １２ｂ （第１）金具片 １２ｃ （第２）金具片 ２１ ホーン先端部 ２２ 耐張碍子の表面部位 ２３ 絶縁カバー ２３ａ 絶縁カバーの開口端部[Description of Signs] 1 Tensile insulator 2a Ground side 2b Power application side 3 Mounting bracket 4 Lightning arrester 6 Current limiting element 9 Air gap 10 Arc horn 12a Metal body 12b (First) Metal piece 12c (Second) Metal piece 21 Horn tip 22 Surface portion of tension insulator 23 Insulation cover 23a Open end of insulation cover
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小菅 努 宮城県仙台市青葉区１番町３丁目７番１号 東北電力株式会社内 (72)発明者 高山 亨 兵庫県尼崎市名神町３丁目７番18号 音羽 電機工業株式会社本社事業所内 Ｆターム(参考） 5G331 AA02 BA03 BC08 CA01 DA03 EA02 EB02 EB07 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsutomu Kosuge 3-7-1, Ichibancho, Aoba-ku, Sendai-shi, Miyagi Tohoku Electric Power Co., Inc. (72) Inventor Toru Takayama 3-7-1 Meishincho, Amagasaki-shi, Hyogo No. 18 Otowa Denki Kogyo Co., Ltd. F-term (reference) 5G331 AA02 BA03 BC08 CA01 DA03 EA02 EB02 EB07
Claims (3)
に、非直線性の電流電圧特性を有する限流要素を備えた
避雷器を取り付け金具を介して電気的に接続し、前記避
雷器を前記取り付け金具により耐張碍子に支持した状態
で平行配置すると共に、前記避雷器の課電側端子から延
びるアークホーンを気中間隙を介して前記耐張碍子と対
向配置したことを特徴とする耐張耐雷装置。An arrester provided with a current limiting element having a non-linear current-voltage characteristic is electrically connected to a ground side of a tension insulator installed on a transmission and distribution line via a mounting bracket. And the arc horn extending from the power receiving side terminal of the lightning arrester is arranged to face the tension insulator through an air gap. Zhang lightning proof device.
る略Ｕ字状をなし、両端を締着ボルトにより耐張碍子に
締め付けることによりその耐張碍子に固定される金具本
体と、その金具本体に複数箇所で着脱可能なように装着
され、前記避雷器を支持する金具片とを備え、前記金具
本体に対する金具片の取り付け位置を選択することによ
り、耐張碍子に対する避雷器の相対位置を変更可能とし
たことを特徴とする請求項１に記載の耐張耐雷装置。2. The mounting bracket has a substantially U-shape for holding the tension insulator, and a metal fitting body fixed to the tension insulator by tightening both ends to the tension insulator by fastening bolts. A metal piece that is detachably attached to the metal body at a plurality of locations and supports the lightning arrester, and by changing a mounting position of the metal piece with respect to the metal body, a relative position of the lightning arrester with respect to the tension insulator is changed. The tension-resistant lightning proof device according to claim 1, wherein the device is made possible.
が先鋭な形状を有し、耐張碍子の課電側に被着された絶
縁カバーの開口端部に位置して気中間隙に露呈する耐張
碍子の表面部位と前記ホーン先端部との間で放電可能と
したことを特徴とする請求項１に記載の耐張耐雷装置。3. The arc horn has a sharp tip at the horn tip, and is located at an open end of an insulating cover attached to the power application side of the tension insulator and is exposed to the air gap. 2. The tension lightning proof device according to claim 1, wherein discharge is enabled between a surface portion of the tension insulator and a tip of the horn. 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000254304A JP4485033B2 (en) | 2000-08-24 | 2000-08-24 | Tensile lightning protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000254304A JP4485033B2 (en) | 2000-08-24 | 2000-08-24 | Tensile lightning protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002075096A true JP2002075096A (en) | 2002-03-15 |
| JP4485033B2 JP4485033B2 (en) | 2010-06-16 |
Family
ID=18743274
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000254304A Expired - Lifetime JP4485033B2 (en) | 2000-08-24 | 2000-08-24 | Tensile lightning protection device |
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| Country | Link |
|---|---|
| JP (1) | JP4485033B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151122A (en) * | 2013-03-29 | 2013-06-12 | 国家电网公司 | Cap for lightning-proof post insulator |
| CN103701038A (en) * | 2013-10-23 | 2014-04-02 | 吉林市能兴电力设备有限公司 | Pure air gap arrester |
-
2000
- 2000-08-24 JP JP2000254304A patent/JP4485033B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151122A (en) * | 2013-03-29 | 2013-06-12 | 国家电网公司 | Cap for lightning-proof post insulator |
| CN103701038A (en) * | 2013-10-23 | 2014-04-02 | 吉林市能兴电力设备有限公司 | Pure air gap arrester |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4485033B2 (en) | 2010-06-16 |
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