JP2503560Y2 - Gas insulated switchgear - Google Patents

Description

【考案の詳細な説明】 A.産業上の利用分野 本考案は、密閉されたタンク内に各機器を収容して構
成されるガス絶縁開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a gas-insulated switchgear configured by housing each device in a sealed tank.

B.考案の概要 本考案は、タンクの下部を閉塞する基板上に三相分の
ケーブルヘッドと三相分の避雷器とを具え、夫々のケー
ブルヘッドから上方へ伸びる主回路導体を避雷器接続導
体を介して避雷器に接続したガス絶縁開閉装置におい
て、 基板上で避雷器を一直線上に配置する一方、ケーブル
ヘッドを二等辺三角形の頂点の位置に配置し、三相分の
避雷器を同一方向へ同一量だけ平行移動した位置である
中央のケーブルヘッドの上に主回路導体を配置すること
により、 三相分の避雷器接続導体が相互に平行になるように
し、三相分として同一仕様の避雷器接続導体を用いるこ
とを可能にしたものである。B. Outline of the Invention The present invention comprises a cable head for three phases and a lightning arrester for three phases on a substrate that closes the lower part of the tank, and a main circuit conductor extending upward from each cable head is connected to a lightning arrester connection conductor. In the gas-insulated switchgear connected to the lightning arrester via the lightning arrester, arrange the lightning arrester in a straight line on the board, while arranging the cable head at the apex of the isosceles triangle, and arrange the lightning arresters for three phases in the same direction in the same amount. By placing the main circuit conductor on the central cable head, which is the translated position, so that the three-phase lightning arrester connection conductors are parallel to each other, and use the same arrester connection conductors for the three phases. It made it possible.

C.従来の技術 まず、ガス絶縁開閉装置の結線状態を第３図に基づい
て説明する。図は単線当たりの結線を示すものである
が、各ガス絶縁開閉装置には三相分設けられる。また、
主母線1a,1bの２本の主母線があるが、一方は本線で他
方は停電等の場合に非常用として用いる補助線である。
図中、２はしゃ断器、３は変流器、４は負荷に接続する
ためのケーブルヘッド、５は避雷器、６は計器用変圧
器、7a〜7cは接地装置、8a〜8cは断路器である。C. Conventional Technique First, the connection state of the gas insulated switchgear will be described with reference to FIG. Although the figure shows the connection per single wire, each gas insulated switchgear is provided for three phases. Also,
There are two main buses, main buses 1a and 1b, one of which is a main line and the other is an auxiliary line used as an emergency in case of a power failure or the like.
In the figure, 2 is a circuit breaker, 3 is a current transformer, 4 is a cable head for connecting to a load, 5 is a lightning arrester, 6 is an instrument transformer, 7a to 7c are grounding devices, and 8a to 8c are disconnecting switches. is there.

次に、斯かる結線によるガス絶縁開閉装置を第４図に
基づいて説明する。Next, a gas-insulated switchgear with such wiring will be described with reference to FIG.

図のように、ベース11上に、しゃ断ブロック12a,主母
線ブロック12b,線路側ブロック12cが形成される。しゃ
断ブロック12aはベース11上の枠体13と枠体13上のしゃ
断タンク14等からなり、線路側ブロック12cはベース11
上のケーブル支持架台15とケーブルタンク16等からな
る。主母線ブロック12bは、紙面と直角な方向へ伸びる
管路17a,17bと、管路17a,17bに直角に接続されるととも
にしゃ断タンク14に接続される管路18a,18b等で構成さ
れる。As shown in the figure, the block 11a, the main bus block 12b, and the line-side block 12c are formed on the base 11. The blocking block 12a includes a frame body 13 on the base 11 and a blocking tank 14 on the frame body 13.
It consists of an upper cable support base 15 and a cable tank 16 and the like. The main bus bar block 12b is composed of pipelines 17a, 17b extending in a direction perpendicular to the plane of the paper, pipelines 18a, 18b connected to the pipelines 17a, 17b at a right angle and to the shutoff tank 14, and the like.

管路17a,17bには夫々三相分の主母線1a,1bが紙面と直
角な方向へ配設され、主母線1a,1bはしゃ断タンク14内
を介してケーブルタンク16内へと導かれる。断路器8a,8
bは管路17a,17b内に設けられ、しゃ断器2,変流器3,接地
装置7a,7bはしゃ断タンク14内に設けられ、負荷母線を
接続するためのケーブルヘッド4,避雷器5,断路器8c,接
地装置7cはケーブルタンク16内に設けられる。20は主回
路導体、23は主母線1a,1bに接続される主回路導体、６
は接続導体19を介して避雷器５に接続された計器用変圧
器、21は各相ごとに避雷器５とケーブルヘッド４とを接
続するための避雷器接続導体である。Main buses 1a and 1b for three phases are respectively arranged in the pipelines 17a and 17b in a direction perpendicular to the plane of the drawing, and the main buses 1a and 1b are guided into the cable tank 16 through the blocking tank 14. Disconnector 8a, 8
b is provided in the pipelines 17a, 17b, the circuit breaker 2, the current transformer 3, the grounding devices 7a, 7b are provided in the blocking tank 14, the cable head 4 for connecting the load bus bar, the arrester 5, the disconnector The container 8c and the grounding device 7c are provided in the cable tank 16. 20 is a main circuit conductor, 23 is a main circuit conductor connected to the main buses 1a and 1b, 6
Is an instrument transformer connected to the lightning arrester 5 via the connection conductor 19, and 21 is a lightning arrester connection conductor for connecting the lightning arrester 5 and the cable head 4 for each phase.

第５図に示すように、三相分のケーブルヘッド4a〜4c
と三相分の避雷器5a〜5cとが夫々三角形の頂点の位置に
配置される。As shown in FIG. 5, cable heads 4a to 4c for three phases are provided.
And lightning arresters 5a-5c for three phases are respectively arranged at the positions of the vertices of the triangle.

D.考案が解決しようとする課題 ところが、各相ごとに避雷器とケーブルヘッドとを接
続する避雷器接続導体が相互に平行でなく長さが異なる
ため、部品が標準化できないという問題がある。D. Problem to be solved by the device However, there is a problem in that parts cannot be standardized because the arrester connecting conductors that connect the arrester and the cable head for each phase are not parallel to each other and have different lengths.

そこで本考案は、斯かる課題を解決したガス絶縁開閉
装置を提供することを目的とする。Then, this invention aims at providing the gas insulated switchgear which solved such a subject.

E.課題を解決するための手段 斯かる目的を達成するめたの本考案の構成は、略筒状
のタンクの下部を基板で塞ぎ、基板の上面に三相分のケ
ーブルヘッドと三相分の避雷器とを取り付けるとともに
夫々のケーブルヘッドにケーブルヘッドから上方へ向か
って伸びる主回路導体を設け、主回路導体と避雷器の上
部とを各相毎に接続したガス絶縁開閉装置において、基
板上の直線に沿って各避雷器を配置する一方、この直線
と平行な底辺を有する二等辺三角形の３つの頂点の位置
に各ケーブルヘッドを配置し、三相分の避雷器を同一方
向へ同一量だけ平行移動させたときに三相のうちの中央
の避雷器が二等辺三角形の底辺上にない頂点に位置する
ケーブルヘッドの真上となるように三相分の主回路導体
を配置し、二等辺三角形の底辺上の頂点に位置するケー
ブルヘッドの上部はケーブルヘッド接続導体を介して個
別に両側の主回路導体の下部に接続し、三相分の避雷器
の上部は相互に平行な避雷器接続導体を介して夫々の主
回路導体に個別に接続したことを特徴とする。E. Means for Solving the Problems The structure of the present invention to achieve such an object is such that the lower part of the substantially cylindrical tank is closed by the substrate, and the cable head for the three phases and the three phases for the three phases are provided on the upper surface of the substrate. In the gas-insulated switchgear in which a surge arrester is attached and a main circuit conductor extending upward from the cable head is provided in each cable head, and the main circuit conductor and the upper part of the arrester are connected for each phase, in a straight line on the substrate While arranging each arrester along each line, each cable head was arranged at the position of three vertices of an isosceles triangle having a base parallel to this straight line, and the arresters for three phases were translated in the same direction by the same amount. Sometimes the main circuit conductors for the three phases are placed so that the lightning arrester in the center of the three phases is directly above the cable head located at the apex not on the base of the isosceles triangle, and on the base of the isosceles triangle. Located at the top The upper part of the cable head is connected individually to the lower part of the main circuit conductor on both sides via the cable head connecting conductor, and the upper parts of the arresters for the three phases are connected to their respective main circuit conductors via the parallel lightning conductor connecting conductors. The feature is that they are connected individually.

F.作用 三相分の避雷器を同一方向へ同一量だけ平行移動した
位置に三相分の主回路導体を配置したので、三相分の避
雷器接続導体が相互に平行かつ同一長さになる。F. Action Since the main circuit conductors for the three phases are placed at positions where the lightning arresters for the three phases are moved in parallel in the same direction by the same amount, the lightning conductor connection conductors for the three phases are parallel to each other and have the same length.

このため、三相分の避雷器接続導体として同一のもの
を用いることができ、部品の標準化が図れる。Therefore, the same conductor can be used as the lightning arrester connecting conductor for the three phases, and the standardization of parts can be achieved.

G.実施例 以下、本考案を図面に示す実施例に基づいて詳細に説
明する。なお、本実施例は従来のガス絶縁開閉装置の一
部を改良したものなので、従来と同一部分には同一符号
を付して説明を省略し、異なる部分のみを説明する。G. Embodiment Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings. Since the present embodiment is an improvement of a part of the conventional gas-insulated switchgear, the same parts as those of the prior art are designated by the same reference numerals, and the description thereof will be omitted. Only different parts will be described.

（ａ）実施例の構成 本考案によるガス絶縁開閉装置の構成を、第１図〜第
２図に基づいて説明する。(A) Configuration of the Embodiment The configuration of the gas-insulated switchgear according to the present invention will be described with reference to FIGS. 1 and 2.

第２図（ｂ）に示すように、基板10上の右側には直線
26に沿って三相分の避雷器5a〜5cが配置され、避雷器5a
〜5cの左側には底辺27が直線26と平行な二等辺三角形28
の３つの頂点の位置に三相分のケーブルヘッド4a〜4cが
配置される。夫々の避雷器5a〜5cは第１図のように接続
導体19を介して計器用変圧器６に接続され、第２図
（ａ）に示すように中央のケーブルヘッド4bの上方には
主回路導体20a,20b,20cが設けられる。As shown in FIG. 2 (b), a straight line is on the right side of the substrate 10.
The arresters 5a to 5c for three phases are arranged along the 26, and the arrester 5a
To the left of ~ 5c isosceles triangle 28 with base 27 parallel to line 26
The cable heads 4a to 4c for three phases are arranged at the positions of the three vertices. Each of the lightning arresters 5a-5c is connected to the instrument transformer 6 via the connecting conductor 19 as shown in FIG. 1, and the main circuit conductor is provided above the central cable head 4b as shown in FIG. 2 (a). 20a, 20b, 20c are provided.

三相分の主回路導体20a,20b,20cは、避雷器5a,5b,5c
を同一方向へ同一量だけ平行移動させた位置に配置され
る。即ち、二等辺三角形の中央の頂点に位置するケーブ
ルヘッド4bの真上に中央の主回路導体20bが位置するよ
うに、第２図（ａ）に示す如く一列に配置される。中央
の主回路導体20bはケーブルヘッド4bと軸心が同一であ
るため、そのままケーブルヘッド4bに接続されるが、両
側の主回路導体20a,20cの下端はケーブルヘッド接続導
体22a,22cを介して他のケーブルヘッド4a,4cに接続され
る。Main circuit conductors 20a, 20b, 20c for three phases are lightning arresters 5a, 5b, 5c
Are arranged in a position translated in the same direction by the same amount. That is, as shown in FIG. 2 (a), the main circuit conductors 20b in the center are arranged in a line so that the main circuit conductor 20b in the center is located directly above the cable head 4b located at the apex of the center of the isosceles triangle. Since the central main circuit conductor 20b has the same axis as the cable head 4b, it is directly connected to the cable head 4b, but the lower ends of the main circuit conductors 20a and 20c on both sides are connected via the cable head connecting conductors 22a and 22c. It is connected to the other cable heads 4a and 4c.

各避雷器5a,5b,5cの上端は相互に平行な避雷器接続導
体24a,24b,24cを介して主回路導体20a,20b,20cの中間部
と接続される。夫々の主回路導体20a,20b,20cの上部に
は断路器8cと接地装置7cとが夫々設けられる。The upper ends of the lightning arresters 5a, 5b, 5c are connected to the intermediate portions of the main circuit conductors 20a, 20b, 20c via the lightning arrester connecting conductors 24a, 24b, 24c which are parallel to each other. A disconnector 8c and a grounding device 7c are provided above the respective main circuit conductors 20a, 20b, 20c.

ここで、ケーブルタンク16・ケーブルヘッド20a〜20c
間と、三相の避雷器5a〜5cの相互間と、ケーブルヘッド
4a・避雷器5a間及びケーブルヘッド4c・避雷器5c間は、
必要最小限の絶縁距離が確保される。Here, the cable tank 16 and the cable heads 20a to 20c
Between the three-phase lightning arresters 5a-5c and the cable head
Between 4a and the arrester 5a and between the cable head 4c and the arrester 5c,
The required minimum insulation distance is secured.

なお、25は負荷に接続される負荷母線である。 In addition, 25 is a load busbar connected to a load.

（ｂ）実施例の作用 次に、ガス絶縁開閉装置の作用を説明する。(B) Operation of the Embodiment Next, the operation of the gas insulated switchgear will be described.

第２図（ａ）に示すように主回路導体20a,20b,20c
が、避雷器5a,5b,5cを同一方向へ同一量だけ平行移動し
た位置に配置されることから、主回路導体と避雷器とを
接続する三相分の避雷器接続導体24a,24b,24cが相互に
平行でかつ相互に同一間隔を有する。このため、避雷器
接続導体24a〜24cとして同一長さの同一仕様のものを用
いることができる。As shown in FIG. 2 (a), main circuit conductors 20a, 20b, 20c
However, since the lightning arresters 5a, 5b, 5c are arranged in positions that are moved in parallel in the same direction by the same amount, the arrester connection conductors 24a, 24b, 24c for the three phases connecting the main circuit conductor and the lightning arrester are mutually They are parallel and have the same distance from each other. Therefore, the lightning arrester connecting conductors 24a to 24c having the same length and the same specifications can be used.

また、第２図（ａ）に示すように主回路導体20a〜20c
は一列に配置されることとなるので、三相分の断路器8
c,接地装置7cを同時に操作するための操作軸を一本にす
ることができ、構造が簡単になる。In addition, as shown in FIG. 2 (a), the main circuit conductors 20a to 20c
Since they will be arranged in a line, the disconnector 8
c, the operation shaft for operating the grounding device 7c at the same time can be one, and the structure is simplified.

H.考案の効果 以上の説明からわかるように、本考案によるガス絶縁
開閉装置によれば以下の効果がある。H. Effects of the Invention As can be seen from the above description, the gas insulated switchgear according to the present invention has the following effects.

即ち、基板上に直線に沿って三相分の避雷器を配置す
るとともに三相分の避雷器を同一方向へ同一量だけ平行
移動した位置に三相分の主回路導体を配置したので、主
回路導体と避雷器とを接続する三相分の避雷器接続導体
が相互に平行かつ同一長さとなる。従って、同一仕様の
ものに統一することができ、部品の標準化が可能にな
る。That is, since the lightning arresters for three phases are arranged along the straight line on the substrate and the main circuit conductors for three phases are arranged at the positions where the lightning arresters for three phases are translated in the same direction by the same amount, the main circuit conductors are arranged. And the arrester connecting conductors for three phases connecting the arrester and the arrester are parallel to each other and have the same length. Therefore, it is possible to unify products having the same specifications and standardize parts.

主回路導体が三相分共同一方向へ並べて配置されるこ
とから、各主回路導体の上部に設けられる断路器等の機
器も同一方向へ並び、機器を相互に連動させる構成が容
易になる。Since the main circuit conductors are arranged side by side in one common direction for the three phases, devices such as a disconnector provided on the upper side of each main circuit conductor are also arranged in the same direction, and the configuration in which the devices are interlocked with each other becomes easy.

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

第１図〜第２図は本考案によるガス絶縁開閉装置の実施
例に係り、第１図はガス絶縁開閉装置の構成図、第２図
（ａ）は第１図のI-I矢視図、第２図（ｂ）は第１図のI
I-II矢視図、第３図はガス絶縁開閉装置の結線図、第４
図〜第５図は従来のガス絶縁開閉装置に係り、第４図は
ガス絶縁開閉装置の構成図、第５図はケーブルタンク内
の配置図である。 4a,4b,4c……ケーブルヘッド、5a,5b,5c……避雷器、10
……基板、16……ケーブルタンク、20a,20b,20c……主
回路導体、22a,22c……ケーブルヘッド接続導体、24a,2
4b,24c……避雷器接続導体、26……直線、27……底辺、
28……二等辺三角形。1 and 2 relate to an embodiment of a gas-insulated switchgear according to the present invention, FIG. 1 is a block diagram of the gas-insulated switchgear, and FIG. 2 (a) is a view taken along the arrow II of FIG. Figure 2 (b) shows I in Figure 1.
I-II arrow view, Fig. 3 is a connection diagram of gas insulated switchgear, 4
5 to 5 relate to a conventional gas-insulated switchgear, FIG. 4 is a block diagram of the gas-insulated switchgear, and FIG. 5 is a layout of the cable tank. 4a, 4b, 4c …… Cable head, 5a, 5b, 5c …… Lightning arrester, 10
...... Substrate, 16 …… Cable tank, 20a, 20b, 20c …… Main circuit conductor, 22a, 22c …… Cable head connecting conductor, 24a, 2
4b, 24c …… Lightning arrester connection conductor, 26 …… straight line, 27 …… bottom,
28 …… An isosceles triangle.

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of utility model registration request] 【請求項１】略筒状のタンクの下部を基板で塞ぎ、基板
の上面に三相分のケーブルヘッドと三相分の避雷器とを
取り付けるとともに夫々のケーブルヘッドにケーブルヘ
ッドから上方へ向かって伸びる主回路導体を設け、主回
路導体と避雷器の上部とを各相毎に接続したガス絶縁開
閉装置において、 基板（10）上の直線（26）に沿って各避雷器（5a）〜
（5c）を配置する一方、直線（26）と平行な底辺（27）
を有する二等辺三角形（28）の頂点の各位置に各ケーブ
ルヘッド（4a）〜（4c）を配置し、三相分の避雷器（5
a）〜（5c）を同一方向へ同一量だけ平行移動させたと
きに三相のうちの中央の避雷器（5b）が二等辺三角形
（28）の底辺（27）上にない頂点に位置するケーブルヘ
ッド（4b）の真上となるように三相分の主回路導体（20
a）〜（20c）を配置し、二等辺三角形（28）の底辺（2
7）上にある頂点に位置するケーブルヘッド（4a），（4
c）の上部はケーブルヘッド接続導体（22a），（22c）
を介して個別に両側の主回路導体（20a），（20c）の下
部に接続し、三相分の避雷器（5a）〜（5c）の上部は相
互に平行な避雷器接続導体（24a）〜（24c）を介して夫
々の主回路導体（20a）〜（20c）に個別に接続したこと
を特徴とするガス絶縁開閉装置。1. A lower portion of a substantially cylindrical tank is covered with a substrate, a cable head for three phases and a lightning arrester for three phases are attached to the upper surface of the substrate, and each cable head extends upward from the cable head. In a gas-insulated switchgear in which a main circuit conductor is provided and the main circuit conductor and the upper part of the arrester are connected for each phase, each arrester (5a) ~ (5a) ~ along the straight line (26) on the substrate (10)
While arranging (5c), the base (27) parallel to the straight line (26)
The cable heads (4a) to (4c) are arranged at the respective positions of the vertices of the isosceles triangle (28) having the three-phase lightning arrester (5
Cable in which the lightning arrester (5b) in the center of the three phases is not located on the base (27) of the isosceles triangle (28) when the a) to (5c) are translated in the same direction by the same amount. The main circuit conductors (20) for the three phases should be directly above the head (4b).
a) to (20c) are placed, and the base (2
7) Cable heads (4a), (4
The upper part of c) is a cable head connecting conductor (22a), (22c)
Are individually connected to the lower parts of the main circuit conductors (20a) and (20c) on both sides, and the upper parts of the arresters (5a) to (5c) for the three phases are parallel to the arrester connection conductors (24a) to ( A gas-insulated switchgear characterized by being individually connected to the respective main circuit conductors (20a) to (20c) via 24c).