JP2859358B2 - Puffer type gas circuit breaker with closing resistance contact - Google Patents
Puffer type gas circuit breaker with closing resistance contactInfo
- Publication number
- JP2859358B2 JP2859358B2 JP4095090A JP4095090A JP2859358B2 JP 2859358 B2 JP2859358 B2 JP 2859358B2 JP 4095090 A JP4095090 A JP 4095090A JP 4095090 A JP4095090 A JP 4095090A JP 2859358 B2 JP2859358 B2 JP 2859358B2
- Authority
- JP
- Japan
- Prior art keywords
- movable electrode
- contact
- closing
- spring
- resistance contact
- 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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Description
【発明の詳細な説明】 ［発明の目的］ （産業上の利用分野） 本発明は、投入抵抗接点及び投入抵抗を有するパッフ
ァ形ガス遮断器に関するものである。The present invention relates to a puffer type gas circuit breaker having a closing resistance contact and a closing resistance.
（従来の技術） 近年、送電系統の大容量化に伴い、変電所や開閉所に
用いられる遮断器の遮断容量が増大し、且つ高い信頼性
が要求されている。この様な遮断器の信頼性を高めるた
めには、部品数を少なくし、構造を単純化することが重
要である。そのため、遮断器の遮断点数の減少が図られ
ている。例えば、現在550KV系統では遮断電流が50KAの
２点切り遮断器が実用化されているが、さらにこれを１
点切り化することが要求されている。(Prior Art) In recent years, as the capacity of power transmission systems has increased, the breaking capacity of circuit breakers used in substations and switchyards has increased, and high reliability has been required. In order to increase the reliability of such a circuit breaker, it is important to reduce the number of parts and simplify the structure. Therefore, the number of breaking points of the circuit breaker is reduced. For example, a double-break circuit breaker with a breaking current of 50KA is currently in practical use in the 550KV system.
It is required to be pointed.
ところで、この様な大容量の遮断器を１点切り化する
場合に、消弧性能を向上させるには、従来の２点切りの
遮断器に比べてその開極速度を格段に早くする必要があ
る。そのため、固定電極とこれに対向配置した可動電極
を備え、開極時には可動電極のみを移動させていた従来
の遮断器に対して、対向する２つの電極を同時に反対方
向に移動させて開極する、いわゆるダブルモーションと
呼ばれる遮断器が提案されている。このダブルモーショ
ン方式の遮断器によれば、各電極の移動速度は従来の遮
断器と同様であるにもかかわらず、開極速度が格段に早
くなり、消弧性能が大幅に向上するといった利点があ
る。By the way, when such a large capacity circuit breaker is cut into one point, in order to improve the arc extinguishing performance, it is necessary to make the opening speed of the breaker much faster than that of the conventional two-point breaker. is there. Therefore, in contrast to the conventional circuit breaker, which has a fixed electrode and a movable electrode opposed to the fixed electrode and moves only the movable electrode at the time of opening, two opposed electrodes are simultaneously moved in opposite directions to open. A circuit breaker called a so-called double motion has been proposed. According to this double-motion circuit breaker, the opening speed is much faster and the arc-extinguishing performance is greatly improved, although the moving speed of each electrode is the same as that of the conventional circuit breaker. is there.
この様なダブルモーション方式の遮断器の一例を第４
図及び第５図に示した。図において、１は主接点第１可
動電極、10は主接点第２可動電極（従来の固定電極に相
当する）である。この主接点第１可動電極１はパッファ
シリンダ２の先端部に設けられ、その外周には絶縁ノズ
ル３、可動通電接触子４が同心円状に配置されている。
また、パッファシリンダ２の中心部には操作ロッド５が
固定され、この操作ロッド５が絶縁ロッド６を介して図
示しない操作機構部に接続されている。さらに、パッフ
ァシリンダ２の内 側には、絶縁筒７に支持固定されたパッファピストン８
が挿入され、このパッファピストン８と前記パッファシ
リンダ２に囲まれた空間がパッファ室９となっている。An example of such a double-motion circuit breaker is the fourth.
This is shown in FIG. 5 and FIG. In the figure, reference numeral 1 denotes a main contact first movable electrode, and reference numeral 10 denotes a main contact second movable electrode (corresponding to a conventional fixed electrode). The main contact first movable electrode 1 is provided at the tip of a puffer cylinder 2, and an insulating nozzle 3 and a movable energizing contact 4 are concentrically arranged on the outer periphery thereof.
An operation rod 5 is fixed to the center of the puffer cylinder 2, and the operation rod 5 is connected to an operation mechanism (not shown) via an insulating rod 6. Further, inside the puffer cylinder 2, a puffer piston 8 supported and fixed to an insulating cylinder 7 is provided.
The space surrounded by the puffer piston 8 and the puffer cylinder 2 is a puffer chamber 9.
一方、主接点第２可動電極10は、通電円筒11における
主接点第１可動電極１との対向面中央に突出して設けら
れ、前記絶縁ノズル３及び主接点第１可動電極１内に挿
入されるように構成されている。また、主接点第２可動
電極10の外周には、前記主接点第１可動電極の可動通電
接触子４と接触する第２可動通電接触子12と第２可動シ
ールド13とが設けられている。この主接点第２可動電極
10は、前記主接点第１可動電極１に対して、両電極の開
極或いは投入時に両電極を反対方向に駆動するダブルモ
ーション機構によって連結されている。即ち、これら主
接点第２可動電極10を支持する通電円筒11は、その基部
において通電用導体14に摺動自在に挿入されると同時
に、前記主接点第１可動電極１の外側に配設された絶縁
ロッド15及びリンク機構16を介して、主接点第１可動電
極１を駆動する操作ロッド５の基部に接続されている。
このリンク機構16は、リンク16aの両端にそれぞれ回動
自在に連結された第１、第２の連結棒16b,16c及びリン
ク16aを支持するリンク支持部16dより構成されている。
リンク16aは、所定のリンク比に設定されたリンク支持
部16dの支点16eを軸にして、リンク支持部16dに対して
回動自在に支持されている。また、第１、第２の各連結
棒16b,16cは、それぞれの一端にて操作ロッド５と絶縁
ロッド15に回動自在に連結されている。なお、リンク支
持部16dは、図示しない容器に絶縁固定された絶縁筒７
に固定されている。On the other hand, the main contact second movable electrode 10 is provided so as to protrude at the center of the energized cylinder 11 facing the main contact first movable electrode 1, and is inserted into the insulating nozzle 3 and the main contact first movable electrode 1. It is configured as follows. A second movable energizing contact 12 and a second movable shield 13 that are in contact with the movable energizing contact 4 of the main contact first movable electrode are provided on the outer periphery of the main contact second movable electrode 10. This main contact second movable electrode
Numeral 10 is connected to the main contact first movable electrode 1 by a double motion mechanism that drives both electrodes in opposite directions when both electrodes are opened or closed. That is, the current-carrying cylinder 11 supporting the main contact second movable electrode 10 is slidably inserted into the current-carrying conductor 14 at the base thereof, and is disposed outside the main contact first movable electrode 1 at the same time. It is connected to the base of the operating rod 5 that drives the main contact first movable electrode 1 via the insulating rod 15 and the link mechanism 16.
The link mechanism 16 includes first and second connecting rods 16b and 16c rotatably connected to both ends of a link 16a, and a link support 16d for supporting the link 16a.
The link 16a is rotatably supported by the link support 16d about a fulcrum 16e of the link support 16d set to a predetermined link ratio. Each of the first and second connecting rods 16b and 16c is rotatably connected to the operating rod 5 and the insulating rod 15 at one end thereof. The link support 16d is provided on an insulating tube 7 insulated and fixed to a container (not shown).
It is fixed to.
この様に構成されたダブルモーション方式の遮断器
は、第４図の投入状態において、図示しない操作機構部
を駆動すると、操作ロッド５が所定の速度で操作機構部
側（図中右側）に移動し、その先端に固定された主接点
第１可動電極１が右方向に移動し、主接点第２可動電極
10との間で遮断動作が行われる。一方、この操作ロッド
５の動作に伴って、これに連結されたリンク機構16が駆
動され、絶縁ロッド15を操作ロッド５とは反対側（図中
左側）に移動させる。その結果、この絶縁ロッド15の先
端に固定された通電円筒11及び主接点第２可動電極10が
主接点第１可動電極１とは反対方向（図中左側）に移動
する。また、前記操作ロッド５の移動により、その先端
に固定されたパッファシリンダ２が絶縁筒７に固定され
たパッファピストン８に対して移動し、パッファ室９が
圧縮されるので、内部の消弧性ガスが絶縁ノズル３に案
内されて、開離する主接点第１、第２電極間に発生した
アークに吹付けられ、消弧、遮断動作がなされる。When the operating mechanism (not shown) is driven in the closed state of FIG. 4 in the closed state of FIG. 4, the operating rod 5 moves to the operating mechanism side (the right side in the figure) at a predetermined speed. Then, the main contact first movable electrode 1 fixed to the tip moves rightward, and the main contact second movable electrode 1 moves.
A shut-off operation is performed between the two. On the other hand, with the operation of the operation rod 5, the link mechanism 16 connected thereto is driven to move the insulating rod 15 to the side opposite to the operation rod 5 (left side in the figure). As a result, the energizing cylinder 11 and the main contact second movable electrode 10 fixed to the tip of the insulating rod 15 move in the direction opposite to the main contact first movable electrode 1 (left side in the figure). In addition, the movement of the operation rod 5 causes the puffer cylinder 2 fixed to the tip thereof to move with respect to the puffer piston 8 fixed to the insulating cylinder 7, and the puffer chamber 9 is compressed. The gas is guided to the insulating nozzle 3 and is blown against the arc generated between the first and second electrodes that are separated from each other, so that the arc is extinguished and cut off.
なお、投入動作は、操作ロッド５を前記遮断動作とは
反対方向に駆動して、主接点第１、第２可動電極1,10を
相対的に接近させることにより行われる。The closing operation is performed by driving the operation rod 5 in a direction opposite to the blocking operation to make the first and second movable electrodes 1 and 10 relatively close to each other.
この様にダブルモーション方式の遮断器においては、
操作ロッド５の移動速度は従来の遮断器と同様なもので
ありながら、主接点第１、第２可動電極1,10の両方を反
対方向に駆動するため、両電極間の相対的な開離速度が
２倍程度に向上し、大容量の遮断器においても１点切り
が可能となる。In this way, in a double-motion circuit breaker,
The moving speed of the operating rod 5 is the same as that of the conventional circuit breaker, but the main contact first and second movable electrodes 1 and 10 are driven in opposite directions. The speed is improved to about twice, and even a large capacity circuit breaker can be cut by one point.
ところで、550KV級のような大容量系統における線路
用の遮断器においては、投入時の投入過電圧を抑制する
ために投入抵抗方式が採用されている。これは、遮断器
の主接点と並列に投入抵抗を有する投入抵抗接点を設
け、投入時には主接点に先立ってこの投入抵抗接点が投
入され、その投入抵抗により投入過電圧が抑制された状
態で主接点が投入されるものである。この方式において
は、開極時に、まず投入抵抗接点が開離し、次いで主接
点が開極することが必要である。By the way, in a circuit breaker for a line in a large-capacity system such as a 550KV class, a closing resistance method is adopted in order to suppress a closing overvoltage at closing. In this method, a closing resistance contact having a closing resistance is provided in parallel with the main contact of the circuit breaker. Is input. In this method, at the time of opening, it is necessary that the closing resistance contact is first opened and then the main contact is opened.
この様な要求を満たすために、前記のダブルモーショ
ン方式のパッファ形ガス遮断器に投入抵抗接点を設ける
に当たっては、第１図及び第２図に示すような構成が提
案されている。即ち、第１図は投入状態を表わし、第２
図は遮断状態を表わしている。図において、投入抵抗接
点第１可動電極31は、主接点第１可動電極１の操作ロッ
ド５に一体に固定され、主接点第１可動電極１を取り囲
むように同軸に配置されている。一方、投入抵抗接点第
２可動電極32は、主接点第２可動電極10と絶縁物33をを
介して同軸に配置されるもので、具体的には、絶縁物33
の外方に設けられたケース状の電極35内にバネ36によっ
て第１可動電極31側に付勢された状態でスライド自在に
収納されている。この投入抵抗接点第２可動電極32は、
投入抵抗体34を介して主接点第２可動電極10と電気的に
接続されている。なお、この場合、投入抵抗接点第２可
動電極32は、主接点第２可動電極10と共にダブルモーシ
ョンによって移動するため、投入抵抗接点第２可動電極
32と投入抵抗体34との間にもスライドコンタクトが形成
されている。In order to satisfy such a demand, a configuration as shown in FIGS. 1 and 2 has been proposed for providing a closing resistance contact in the puffer type gas circuit breaker of the above-mentioned double motion system. That is, FIG. 1 shows the closed state, and FIG.
The figure shows a cut-off state. In the figure, the closing resistance contact first movable electrode 31 is integrally fixed to the operating rod 5 of the main contact first movable electrode 1, and is coaxially arranged so as to surround the main contact first movable electrode 1. On the other hand, the closing movable contact second movable electrode 32 is disposed coaxially with the main contact second movable electrode 10 via the insulator 33.
Is slidably housed in a case-shaped electrode 35 provided outside of the case while being urged toward the first movable electrode 31 by a spring 36. This closing resistance contact second movable electrode 32 is
The main contact is electrically connected to the second movable electrode 10 via the closing resistor 34. In this case, since the second movable electrode 32 of the closing resistance contact is moved together with the second movable electrode 10 of the main contact by double motion, the second movable electrode 32 of the closing resistance contact is moved.
A slide contact is also formed between 32 and the closing resistor 34.
（発明が解決しようとする課題） しかし、この様に投入抵抗接点をバネ36を使用したバ
ッドコンタクト方式にして投入抵抗接点の使用を満たそ
うとする場合、投入抵抗接点第２可動電極32は主接点第
２可動電極10によりバネ36を介して駆動されるため、バ
ネ36の応答性が悪いと投入抵抗接点第２可動電極32は望
む動作をしない場合がある。この点を第６図に示す、投
入抵抗接点付きダブルモーション方式の遮断器の望まし
い動作を示す図により説明する。即ち、投入時には、投
入抵抗接点第１可動電極31、投入抵抗接点第２可動電極
32は、主接点第１可動電極１、主接点第２可動電極10に
連動して動き、まず投入抵抗接点がオンし、投入抵抗体
34がある時間回路に挿入され、その後消弧室の主接点が
閉じることにより投入抵抗体34には電流が流れなくな
る。投入抵抗接点がオンした後、投入抵抗接点第２可動
電極32は投入抵抗接点第１可動電極31によりバネ36のワ
イプ分押込まれる。しかしながら、投入抵抗接点第２可
動電極とバネ36からなるバネ系の固有振動数が低いと、
主接点第２可動電極10の動きに投入抵抗接点第２可動電
極32の動きが追従することができず、ある時間遅れをも
って動きだす。つまり、主接点第２可動電極10が動くこ
とによりバネ36を押していっても、バネ36の応答性が悪
いため、バネ36が縮む方が大きく、投入抵抗接点第２可
動電極32へ動きが伝わらないので、あたかもバネ36によ
り主接点第２可動電極10の動きが吸収されたようにな
る。その結果、投入抵抗接点第２可動電極32は投入時に
第６図のように動かず、第７図に示すような動きとな
り、投入抵抗接点が消弧室の主接点に先行してオンする
ことが不可能になる。(Problem to be Solved by the Invention) However, in the case where the closing resistance contact is made to be a bad contact using the spring 36 in order to satisfy the use of the closing resistance contact, the closing resistance contact second movable electrode 32 is mainly used. Since the contact second movable electrode 10 is driven via the spring 36, if the response of the spring 36 is poor, the closing resistance contact second movable electrode 32 may not perform the desired operation. This point will be described with reference to FIG. 6, which illustrates a desirable operation of the breaker of the double motion type with a closing resistance contact. That is, at the time of closing, the closing movable contact first movable electrode 31, the closing resistive contact second movable electrode
32 moves in conjunction with the first movable electrode 1 of the main contact and the second movable electrode 10 of the main contact.
When the main contact of the arc-extinguishing chamber is closed after a certain time, the current stops flowing through the closing resistor. After the closing resistance contact is turned on, the closing resistance contact second movable electrode 32 is pushed by the spring 36 by the closing resistance contact first movable electrode 31. However, if the natural frequency of the spring system including the closing movable contact second movable electrode and the spring 36 is low,
The movement of the closing resistance contact second movable electrode 32 cannot follow the movement of the main contact second movable electrode 10, and starts to move with a certain time delay. That is, even if the spring 36 is pressed by the movement of the main contact second movable electrode 10, the response of the spring 36 is poor, so that the spring 36 contracts more and the movement is transmitted to the closing resistance contact second movable electrode 32. Since there is no movement, it is as if the movement of the main contact second movable electrode 10 was absorbed by the spring 36. As a result, the closing resistance contact second movable electrode 32 does not move as shown in FIG. 6 at the time of closing, but moves as shown in FIG. 7, and the closing resistance contact turns on prior to the main contact of the arc-extinguishing chamber. Becomes impossible.
本発明は、以上の問題点を解消するために提案された
もので、その目的は、確実に投入抵抗接点が消弧室の主
接点に先行してオンすることにより投入時の過電圧を抑
制し、しかも開極或いは投入時における投入抵抗接点の
絶縁回復速度の向上を可能とした、信頼性の高い大容量
１点切り投入抵抗接点付きダブルモーション方式のパッ
ファ形ガス遮断器を提供することにある。The present invention has been proposed in order to solve the above-described problems, and an object of the present invention is to suppress an overvoltage at the time of closing by surely turning on a closing resistance contact prior to a main contact of an arc-extinguishing chamber. Another object of the present invention is to provide a highly reliable double-motion puffer-type gas circuit breaker with a large-capacity single-point cut-off resistance contact, which can improve the insulation recovery speed of the closing resistance contact at the time of opening or closing. .
［発明の構成］ （課題を解決するための手段） 上記の目的を達成するために、本発明は、投入抵抗接
点第２可動電極32と主接点第２可動電極10を繋ぐバネ36
に着目し、投入抵抗接点第２可動電極32の動きが主接点
第２可動電極10の動きに確実に追従するようバネ36のバ
ネ定数の値を定めたものである。[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the present invention provides a spring 36 that connects the second movable electrode 32 of the closing resistance contact and the second movable electrode 10 of the main contact.
The value of the spring constant of the spring 36 is determined so that the movement of the closing resistance contact second movable electrode 32 follows the movement of the main contact second movable electrode 10 without fail.
即ち、投入時の主接点第２可動電極10の動きだしから
停止するまでの時間をＴ（秒）、投入抵抗接点第２可動
電極32とバネ36からなるバネ系の質量をＭ（kg）、バネ
定数をｋ（kgf/m）、重力の加速度をｇとした場合に、 ｋ＞（π２・Ｍ）／（4g・T2） を満たすようにバネ36のバネ定数を定めた。That is, the time from the movement of the main contact second movable electrode 10 at the time of closing to the stop thereof is T (second), the mass of the spring system composed of the closing resistance contact second movable electrode 32 and the spring 36 is M (kg), constant k (kgf / m), when the acceleration of gravity was g, defining the spring constant of the spring 36 so as to satisfy k> a (π 2 · M) / ( 4g · T 2).
（作用） 今、投入時の主接点第２可動電極10の動きだしから停
止するまでの時間をＴ（秒）とすると、主接点第２可動
電極10の動きから得られる振動数f0は、次式のように近
似できる。(Operation) Assuming that the time from the movement of the main contact second movable electrode 10 at the time of closing to the stop is T (seconds), the frequency f 0 obtained from the movement of the main contact second movable electrode 10 is as follows. It can be approximated as in the equation.
f0＝1/（4T） …… また、投入抵抗接点第２可動電極32とバネ36からなる
バネ系の質量をＭ（kg）、バネ定数をｋ（kgf/m）、重
力の加速度をｇとした場合に、このバネ系の固有振動数
ｆは、 で表される。f 0 = 1 / (4T) Further, the mass of a spring system including the second movable electrode 32 and the spring 36 of the closing resistance contact is M (kg), the spring constant is k (kgf / m), and the acceleration of gravity is g. , The natural frequency f of this spring system is It is represented by
投入抵抗接点第２可動電極とバネ36からなるバネ系が
主接点第２可動電極10の動きに余り大きな時間遅れなく
追従するためには、バネ系の固有振動数ｆが主接点第２
可動電極10の動きから得られる振動数f0より大きくない
と、バネ系の動きが追従しなくなる。即ち、 ｆ＞f0 …… が成り立つ必要がある。式が成り立つように式か
らバネ定数ｋを求めると、次式を得る。In order for the spring system composed of the closing resistance contact second movable electrode and the spring 36 to follow the movement of the main contact second movable electrode 10 without an excessively long time delay, the natural frequency f of the spring system must be equal to the main contact second movable electrode.
If not greater than the frequency f 0 obtained from the movement of the movable electrode 10, the movement of the spring system will not follow. That is, it is necessary that f> f 0 . When the spring constant k is obtained from the equation so that the equation holds, the following equation is obtained.
ｋ＞（π２・Ｍ）／（4g・T2） …… 即ち、このの式を満足するようにバネ36のバネ定数
を定めた本発明においては、投入抵抗接点第２可動電極
とバネ36からなるバネ系が、主接点第２可動電極10の動
きに余り大きな時間遅れなく追従するとになる。その結
果、本発明によれば、投入抵抗接点が消弧室の主接点に
先行して確実にオンすることになる。k> (π 2 · M) / (4g · T 2 ) That is, in the present invention in which the spring constant of the spring 36 is determined so as to satisfy this equation, the closing movable contact second movable electrode and the spring 36 Will follow the movement of the main contact second movable electrode 10 without too much time delay. As a result, according to the present invention, the closing resistance contact is reliably turned on prior to the main contact of the arc-extinguishing chamber.
（実施例） 以下、本発明の実施例を第１図乃至第３図に基づいて
具体的に説明する。なお、本発明の遮断器の構成は、バ
ネ36のバネ定数以外には、第１図、第２図に示した従来
と遮断器の同様であるため、各部の構成については第１
図、第２図をそのまま使用し、その詳細な説明は省略す
る。(Example) Hereinafter, an example of the present invention will be specifically described with reference to FIGS. 1 to 3. The configuration of the circuit breaker of the present invention is the same as that of the conventional circuit breaker shown in FIGS. 1 and 2 except for the spring constant of the spring 36.
FIG. 2 is used as it is, and a detailed description thereof is omitted.
本実施例では、投入抵抗接点第２可動電極32の質量を
M1（kg）、バネの質量をM2（kg）とする。一般にバネの
質量M2は投入抵抗接点第２可動電極32の質量M1に比べて
かなり小さいので、バネ系の質量Ｍは投入抵抗接点第２
可動電極32の質量M2で近似できる。よって、前記式よ
り、バネ36のバネ定数の下限が決る。ここで、例えば、
投入抵抗接点第２可動電極32の応答性を良くするため
に、 ｆ＝2f0 と選ぶことにすると、式から、 ｋ＝π2M1/gT2 が決る。この場合の投入時の主接点第１可動電極１、主
接点第２可動電極10、投入抵抗接点第１可動電極31、投
入抵抗接点第２可動電極32の各電極の動きを第３図に示
す。図から明らかな通り、本実施例では、投入抵抗接点
第２可動電極32が主接点第２可動電極10の動きに対して
最初は少し遅いものの、投入抵抗接点第１可動電極31に
当たるまでには所定の距離を動き、確実に投入抵抗接点
が消弧室の主接点に先行してオンしている。In the present embodiment, the mass of the closing resistance contact second movable electrode 32 is
Let M 1 (kg) and the mass of the spring be M 2 (kg). Since generally the mass M 2 of the spring is considerably smaller than the mass M 1 of the closing resistor contacts the second movable electrode 32, the mass M of the spring system is turned resistance contact second
It can be approximated by the mass M 2 of the movable electrode 32. Therefore, the lower limit of the spring constant of the spring 36 is determined from the above equation. Where, for example,
If f = 2f 0 is selected in order to improve the response of the closing resistance contact second movable electrode 32, k = π 2 M 1 / gT 2 is determined from the equation. FIG. 3 shows the movement of the main contact first movable electrode 1, the main contact second movable electrode 10, the closing resistance contact first movable electrode 31, and the closing resistance contact second movable electrode 32 in this case. . As is clear from the figure, in the present embodiment, although the closing resistance contact second movable electrode 32 is slightly slower at first than the movement of the main contact second movable electrode 10, it does not reach the closing resistance contact first movable electrode 31 until the contact. After moving a predetermined distance, the closing resistance contact is surely turned on prior to the main contact of the arc-extinguishing chamber.
（他の実施例） なお、前記実施例は、投入抵抗接点が同軸構造のもの
について説明したが、本発明は、ダブルモーション方式
のパッファ形ガス遮断器において、投入抵抗接点のワイ
プをバネにより構成し、かつ投入抵抗接点第２可動電極
と主接点第２可動電極を連動して動かす遮断器全般に適
用可能で、例えば投入抵抗接点第１可動電極と投入抵抗
接点第２可動電極が各々棒状の電極構造であっても良
い。(Other Embodiments) In the above embodiments, the closing resistance contact is described as having a coaxial structure. However, in the present invention, in the double motion type puffer type gas circuit breaker, the closing resistance contact wipe is constituted by a spring. In addition, the present invention can be applied to all circuit breakers that move the closing resistance contact second movable electrode and the main contact second movable electrode in conjunction with each other. For example, the closing resistance contact first movable electrode and the closing resistance contact second movable electrode each have a rod shape An electrode structure may be used.
また、投入抵抗体34についても、投入抵抗接点第２可
動電極32と主接点第２可動電極10の間に投入抵抗体が電
気的に接続されたものについてのみ説明したが、この投
入抵抗体が分割されて主接点第１可動電極１と投入抵抗
接点第１可動電極31との間に電気的に接続されているも
のにも適用可能である。In addition, as for the closing resistor 34, only the closing resistor electrically connected between the closing resistor contact second movable electrode 32 and the main contact second movable electrode 10 has been described. The present invention is also applicable to a device which is divided and electrically connected between the first movable electrode 1 of the main contact and the first movable electrode 31 of the closing resistance contact.
さらに、主接点第１可動電極１と主接点第２可動電極
10とを、その開極及び投入時に反対方向に駆動するダブ
ルモーション機構も、他の構造のものを適宜使用でき
る。Further, a main contact first movable electrode 1 and a main contact second movable electrode
The double-motion mechanism for driving the motor 10 in the opposite direction at the time of opening and closing thereof may have another structure as appropriate.
［発明の効果］ 以上述べた様に、本発明によれば、投入抵抗接点第２
可動電極を付勢するバネの定数を所定の値に決定すると
いう極めて簡単な手段にも拘らず、確実に投入抵抗接点
が消弧室の主接点に先行してオンとなるので、投入時の
過電圧を確実に抑制することができ、しかも開極時或い
は投入時における投入抵抗接点の絶縁回復速度の向上を
可能とした信頼性の高い大容量１点切り投入抵抗接点付
きダブルモーション方式のパッファ形ガス遮断器を提供
することができる。[Effect of the Invention] As described above, according to the present invention, the closing resistance contact second
Despite extremely simple means of determining the constant of the spring that biases the movable electrode to a predetermined value, the closing resistance contact is reliably turned on prior to the main contact of the arc-extinguishing chamber. High-reliability, double-motion puffer type with large-capacity one-point cut-off resistance contact that can reliably suppress overvoltage and improve the insulation recovery speed of the closing resistance contact when opening or closing. A gas circuit breaker can be provided.
第１図及び第２図は、１点切り投入抵抗接点付きダブル
モーション方式のパッファ形ガス遮断器の構成を示す断
面図であり、第１図は遮断器の投入状態、第２図は遮断
状態を示す。第３図は本発明の実施例の遮断器の投入時
における各電極のタイムチャートを示す図である。第４
図及び第５図は、従来のダブルモーション方式のパッフ
ァ形ガス遮断器の消弧室部分を示す断面図で、第４図は
遮断器の投入状態、第５図は遮断状態を示す。第６図
は、投入抵抗接点付きダブルモーション方式のパッファ
形ガス遮断器の望ましい電極動作のタイムチャートを示
す図、第７図は、従来の投入抵抗接点付きダブルモーシ
ョン方式のパッファ形ガス遮断器において、バネ定数が
小さい場合の投入時の電極動作のタイムチャートを示す
図である。 １……主接点第１可動電極、２……パッファシリンダ、
３……絶縁ノズル、４……可動通電接触子、５……操作
ロッド、６……絶縁ロッド、７……絶縁筒、８……パッ
ファピストン、９……パッファ室、10……主接点第２可
動電極、11……通電円筒、12……第２可動通電接触子、
13……第２可動シールド、14……通電用導体、15……絶
縁ロッド、16……リンク機構、16a……リンク、16b,16c
……連結棒、16d……リンク支持部、16e……支点、31…
…投入抵抗接点第１可動電極、32……投入抵抗接点第２
可動電極、33……絶縁物、34……投入抵抗体、35……電
極、36……バネ。1 and 2 are cross-sectional views showing the structure of a puffer-type gas circuit breaker of a double motion type with a one-point cut-off closing resistance contact. FIG. 1 is a closed state of the circuit breaker, and FIG. Is shown. FIG. 3 is a diagram showing a time chart of each electrode when the circuit breaker according to the embodiment of the present invention is closed. 4th
5 and 5 are cross-sectional views showing the arc-extinguishing chamber of a conventional double-motion puffer-type gas circuit breaker. FIG. 4 shows the closed state of the circuit breaker, and FIG. 5 shows the closed state. FIG. 6 is a diagram showing a time chart of a desirable electrode operation of a double motion type puffer type gas circuit breaker with a closing resistance contact. FIG. 7 is a diagram showing a conventional double motion type puffer type gas circuit breaker with a closing resistance contact. FIG. 6 is a diagram showing a time chart of an electrode operation at the time of closing when the spring constant is small. 1... Main contact first movable electrode 2... Puffer cylinder,
3 ... insulating nozzle, 4 ... movable energizing contact, 5 ... operating rod, 6 ... insulating rod, 7 ... insulating cylinder, 8 ... puffer piston, 9 ... puffer chamber, 10 ... main contact 2 movable electrode, 11: energized cylinder, 12: second movable energized contact,
13: second movable shield, 14: conducting conductor, 15: insulating rod, 16: link mechanism, 16a: link, 16b, 16c
…… Connection rod, 16d …… Link support part, 16e …… Support point, 31…
… Move-on resistance contact first movable electrode, 32 …… Make-up resistance contact second
Movable electrode, 33 ... insulator, 34 ... closing resistor, 35 ... electrode, 36 ... spring.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−101025（ＪＰ，Ａ) 特開 昭57−162220（ＪＰ，Ａ) 実公 昭58−26433（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.6，ＤＢ名) H01H 33/70 - 33/99──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-3-101025 (JP, A) JP-A-57-162220 (JP, A) Jiko 58-26433 (JP, Y2) (58) Field (Int.Cl. 6 , DB name) H01H 33/70-33/99
Claims (1)
な主接点第１可動電極と主接点第２可動電極を対向配置
して、これら主接点にはその開極及び投入時に両電極を
反対方向に駆動するダブルモーション機構が設けられ、 前記主接点第１可動電極と一体に移動するパッファシリ
ンダと、このパッファシリンダ内を摺動するパッファピ
ストンと、前記パッファシリンダ内部の消弧性ガスをア
ークに吹付ける絶縁ノズルを備え、 前記主接点第１可動電極と固定された投入抵抗接点第１
可動電極と、前記主接点第２可動電極とバネを介して連
動しかつこのバネによって付勢された状態で投入抵抗接
点第１可動電極と対向して接離する投入抵抗接点第２可
動電極と、 前記投入抵抗接点第１可動電極または投入抵抗接点第２
可動電極の少なくともいずれか一方に投入抵抗体が電気
的に接続された投入抵抗接点付きダブルモーション方式
のパッファ形ガス遮断器において、 投入時の前記主接点第２可動電極の動きだしから停止す
るまでの時間をＴ（秒）、前記投入抵抗接点第２可動電
極と前記バネからなるバネ系の質量をＭ（kg）、バネ定
数をｋ（kgf/m）、重力の加速度をｇとした場合に、 ｋ＞（π２・Ｍ）／（4g・T2） を満たすように前記バネのバネ定数を定めたことを特徴
とする投入抵抗接点付きパッファ形ガス遮断器。1. A main contact first movable electrode and a main contact second movable electrode which are freely contactable and separable are disposed opposite to each other in a container filled with an arc-extinguishing gas. A double motion mechanism for driving both electrodes in opposite directions is provided, a puffer cylinder that moves integrally with the main contact first movable electrode, a puffer piston that slides in the puffer cylinder, and arc extinguishing inside the puffer cylinder. An insulating nozzle for blowing a neutral gas to the arc, wherein the main contact first movable electrode and the fixed resistance contact first fixed
A movable electrode, a second movable electrode of the closing resistance contact, which is interlocked with the second movable electrode of the main contact via a spring, and is opposed to and separated from the first movable electrode of the closing resistance contact in a state of being urged by the spring; The closing resistance contact first movable electrode or the closing resistance contact second;
In a double-motion puffer-type gas circuit breaker with a closing resistance contact in which a closing resistor is electrically connected to at least one of the movable electrodes, the main contact second movable electrode at the time of closing from the start of movement to the stop is stopped. When the time is T (second), the mass of the spring system including the second movable electrode of the closing resistance contact and the spring is M (kg), the spring constant is k (kgf / m), and the acceleration of gravity is g, A puffer type gas circuit breaker with a closing resistance contact, wherein the spring constant of the spring is determined so as to satisfy k> (π 2 · M) / (4g · T 2 ).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4095090A JP2859358B2 (en) | 1990-02-23 | 1990-02-23 | Puffer type gas circuit breaker with closing resistance contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4095090A JP2859358B2 (en) | 1990-02-23 | 1990-02-23 | Puffer type gas circuit breaker with closing resistance contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03245430A JPH03245430A (en) | 1991-11-01 |
| JP2859358B2 true JP2859358B2 (en) | 1999-02-17 |
Family
ID=12594782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4095090A Expired - Fee Related JP2859358B2 (en) | 1990-02-23 | 1990-02-23 | Puffer type gas circuit breaker with closing resistance contact |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2859358B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106575584A (en) * | 2014-06-13 | 2017-04-19 | Abb瑞士股份有限公司 | Interrupter driven resistor switch assembly |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004008966A (en) | 2002-06-07 | 2004-01-15 | Mitsubishi Heavy Ind Ltd | Hydrogen separating membrane, hydrogen separating unit and method for manufacturing the membrane |
| JP5261198B2 (en) * | 2009-01-06 | 2013-08-14 | 株式会社日立製作所 | Gas circuit breaker |
-
1990
- 1990-02-23 JP JP4095090A patent/JP2859358B2/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106575584A (en) * | 2014-06-13 | 2017-04-19 | Abb瑞士股份有限公司 | Interrupter driven resistor switch assembly |
| KR101911611B1 (en) * | 2014-06-13 | 2018-10-24 | 에이비비 슈바이쯔 아게 | Interrupter driven resistor switch assembly |
| EP3155627B1 (en) * | 2014-06-13 | 2019-08-28 | ABB Schweiz AG | Interrupter driven resistor switch assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03245430A (en) | 1991-11-01 |
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