JPH06111691A - Puffer type gas-blast circuit breaker with resistor - Google Patents
Puffer type gas-blast circuit breaker with resistorInfo
- Publication number
- JPH06111691A JPH06111691A JP25611092A JP25611092A JPH06111691A JP H06111691 A JPH06111691 A JP H06111691A JP 25611092 A JP25611092 A JP 25611092A JP 25611092 A JP25611092 A JP 25611092A JP H06111691 A JPH06111691 A JP H06111691A
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- Prior art keywords
- resistance
- main
- breaker
- breaking
- resistor
- 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]
【産業上の利用分野】本発明は、遮断時には直列抵抗を
有する抵抗遮断部を主遮断部に遅れて開極させて開極時
に発生するサージ電圧を抑制し、閉極時には抵抗遮断部
を主遮断部より先に開極させて閉極時に発生するサージ
電圧を抑制する、抵抗付きパッファ形ガス遮断器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention suppresses a surge voltage generated at opening by opening a resistance breaking section having a series resistance at the time of breaking, delaying the main breaking section and opening the resistance breaking section at the time of closing. The present invention relates to a puffer-type gas circuit breaker with a resistor that opens a contact before a breaker and suppresses a surge voltage generated when the contact is closed.
【0002】[0002]
【従来の技術】電力系統用の遮断器として、主遮断部と
並列に直列抵抗を有する抵抗遮断部が接続される方式の
遮断器がある。この方式の遮断器では、遮断時には、主
遮断部に遅れて抵抗遮断部が開極して、抵抗に電流を流
し、開極時に発生するサージ電圧を抑制する。また、閉
極時には、抵抗遮断部が主遮断部に先行して閉極し、抵
抗に電流を流し、閉極時に発生するサージ電圧を抑制す
る。このような抵抗付き遮断器が事故電流を遮断する場
合の動作の原理を図8に示す。この図8は、遮断器の右
端子側で故障が発生した場合の遮断動作を示しており、
図中2は主遮断部、3は抵抗遮断部、4は抵抗、5は操
作機構部、I,Irは電流を示している。2. Description of the Related Art As a circuit breaker for a power system, there is a circuit breaker of a system in which a resistance breaker having a series resistance is connected in parallel with a main breaker. In this type of circuit breaker, when the circuit breaks, the resistance circuit breaker opens the electrode after the main circuit breaker, and a current is passed through the resistor to suppress the surge voltage generated when the circuit is opened. Further, at the time of closing the pole, the resistance breaking unit closes the pole prior to the main breaking unit to allow a current to flow through the resistor and suppress the surge voltage generated at the time of closing the pole. FIG. 8 shows the principle of operation when such a circuit breaker with a resistor interrupts a fault current. This FIG. 8 shows the breaking operation when a failure occurs on the right terminal side of the circuit breaker,
In the figure, 2 is a main cutoff section, 3 is a resistance cutoff section, 4 is a resistance, 5 is an operation mechanism section, and I and Ir are currents.
【0003】すなわち、図8の(A)に示すように、閉
極状態において、電流Iは、経路の抵抗値が小さい主遮
断部2を通って流れている。図8の(B)に示すよう
に、抵抗遮断部3を閉極状態としたまま主遮断部2を開
極すると、電流Irが抵抗遮断部3と抵抗4を通って流
れるようになる。この場合の電流Irは、系統電圧と抵
抗4の値で決まる。そして、この図8の(B)に示すよ
うに、主遮断部2によって事故電流Iを遮断した場合に
は、遮断器の左側端子には、遮断による高い過渡回復電
圧(サージ電圧)が発生しようとする。しかしながら、
この場合、抵抗遮断部3が閉極しているため、サージ電
圧は抵抗4によって吸収される。続いて、図8の(C)
に示すように、抵抗遮断部3を開極すると、電流Irが
遮断されて、遮断器は開路状態となる。この場合、抵抗
遮断部3は、発生するサージ電圧を十分に低い値に抑制
するのに必要な一定時間だけ主遮断部3より遅れて開極
する。That is, as shown in FIG. 8A, in the closed state, the current I flows through the main breaker 2 having a small resistance value of the path. As shown in FIG. 8B, when the main breaking unit 2 is opened while the resistance breaking unit 3 is in the closed state, the current Ir flows through the resistance breaking unit 3 and the resistor 4. The current Ir in this case is determined by the system voltage and the value of the resistor 4. Then, as shown in FIG. 8B, when the main breaker 2 cuts off the fault current I, a high transient recovery voltage (surge voltage) will be generated at the left terminal of the breaker. And However,
In this case, since the resistance cutoff portion 3 is closed, the surge voltage is absorbed by the resistance 4. Then, FIG. 8 (C)
As shown in, when the resistance breaking unit 3 is opened, the current Ir is cut off and the breaker is opened. In this case, the resistance cutoff unit 3 opens the delay later than the main cutoff unit 3 for a fixed time required to suppress the generated surge voltage to a sufficiently low value.
【0004】一方、図8の右端子側の事故を解消した後
の閉極時には、図8の(C)の状態から、抵抗遮断部3
を主遮断部2に先行して閉極する。この場合の閉極サー
ジ電圧は、遮断時と同様に、抵抗4によって吸収され
る。続いて、サージ電圧が十分に低い値になるのに必要
な一定時間の後、主遮断部3が閉極する。On the other hand, at the time of closing the electrode after the accident on the right terminal side of FIG. 8 is resolved, the resistance breaking unit 3 is changed from the state of FIG. 8C.
Is closed prior to the main breaking unit 2. The closing surge voltage in this case is absorbed by the resistor 4 as in the case of interruption. Then, after a certain period of time required for the surge voltage to have a sufficiently low value, the main breaking unit 3 is closed.
【0005】[0005]
【発明が解決しようとする課題】ところで、上記のよう
な抵抗付き遮断器は、通常、420kV以上の非常に高
い電圧の系統に適用され、主遮断部、抵抗遮断部共に2
点切り以上で構成されることが多い。このような構成の
遮断器において、通常550kVまでの系統では、閉極
サージ電圧のみを抑制している。それは、閉極サージ電
圧のみを抑制する場合には、遮断器を比較的容易に構成
できるからである。すなわち、主遮断部の可動接触子と
抵抗接触子部(この場合、遮断はしないから接触子部と
称する)の可動接触子を直結し、抵抗接触子部の固定接
触子にバネと浮動接触子などを設けることにより、抵抗
接触子部の閉極時の先行閉極動作と開極時の先行開極動
作を容易に確保することができる。このような技術は、
すでに広く実用化されている。By the way, the circuit breaker with a resistance as described above is usually applied to a system having a very high voltage of 420 kV or more, and both the main circuit breaker and the resistance circuit breaker are connected to each other.
It is often composed of more than a point break. In the circuit breaker having such a configuration, only the closing surge voltage is normally suppressed in the system up to 550 kV. This is because the circuit breaker can be configured relatively easily when only the closing surge voltage is suppressed. That is, the movable contactor of the main breaking portion and the movable contactor of the resistance contactor portion (in this case, the contactor portion is not cut off are referred to as contactor portion) are directly connected, and the fixed contactor of the resistance contactor portion has a spring and a floating contactor. By providing such as, it is possible to easily secure the preceding closing operation when the resistance contact portion is closed and the preceding opening operation when the resistance is opened. Such technology is
It has been widely put into practical use.
【0006】しかしながら、将来実用化が予定されてい
る、1100kVクラスなどのより高電圧の系統に適用
される遮断器においては、十分な絶縁裕度がとれないこ
とから、遮断時においてもサージ電圧の抑制が必要とな
る。前述したように、遮断時のサージ電圧を抑制するた
めには、抵抗遮断部を主遮断部より一定時間遅らせて開
極する必要があり、サージ電圧を十分低下させるために
は、具体的には、約20〜30msの遅れ時間が必要で
ある。このような抵抗遮断部の遅れ開極時間を得るだけ
の機構については、文献「IEEE, SM379−
8, PWRD,1991」などに記述されているが、
2点切り以上の多点切りパッファ形ガス遮断器におい
て、抵抗遮断部の遅れ開極時間を確保して実用化した構
成例は存在しない。However, a circuit breaker, which is expected to be put to practical use in the future and is applied to a higher voltage system such as 1100 kV class, does not have a sufficient insulation margin. Suppression is needed. As described above, in order to suppress the surge voltage at the time of interruption, it is necessary to delay the resistance interruption part from the main interruption part for a certain period of time and open the contact. A delay time of about 20 to 30 ms is required. For a mechanism for only obtaining such a delayed opening time of the resistance breaker, refer to the document “IEEE, SM379-
8, PWRD, 1991 ”, etc.,
In a multi-point cut puffer type gas circuit breaker with two or more cuts, there is no example of a configuration in which the delayed opening time of the resistance cutoff portion is secured and put into practical use.
【0007】本発明は、上記のような従来技術の課題を
解決するために提案されたものであり、その目的は、2
点切り以上の抵抗付きパッファ形ガス遮断器において、
遮断時には抵抗遮断部を主遮断部より一定時間遅れて開
極させ、閉極時には抵抗遮断部を主遮断部より先に閉極
することの可能な、実用性および信頼性の高い抵抗付き
パッファ形ガス遮断器を提供することである。The present invention has been proposed in order to solve the problems of the prior art as described above, and its purpose is to
In a puffer type gas circuit breaker with resistance more than the point cutting,
A puffer type with resistance, which is highly practical and reliable, in which the resistance cutoff part can be opened after a certain time delay from the main cutoff part when breaking, and the resistance cutoff part can be closed before the main breaking part when closing. It is to provide a gas circuit breaker.
【0008】[0008]
【課題を解決するための手段】本発明による抵抗付きパ
ッファ形ガス遮断器は、消弧性ガスを充填した接地容器
内に、パッファ構成の主遮断部および抵抗遮断部をそれ
ぞれ2組以上有する2点切り以上の抵抗付きパッファ形
ガス遮断器において、前記接地容器内のほぼ中央部に配
置され、前記主遮断部および抵抗遮断部が固定される導
電性支持部材と、前記接地容器内の、前記導電性支持部
材に対する第1の方向に配置され、前記接地容器の内面
に対して前記導電性支持部材を固定する支持絶縁筒と、
前記接地容器内の、前記導電性支持部材に対する前記第
1の方向とは異なる第2または第3の方向に配置され、
前記主遮断部および抵抗遮断部をそれぞれ駆動する主遮
断部用絶縁操作棒および抵抗遮断部用絶縁操作棒と、前
記接地容器外の大気中に配置され、前記主遮断部用絶縁
操作棒および抵抗遮断部用絶縁操作棒にそれぞれ連結さ
れる主遮断部駆動装置および抵抗遮断部駆動装置と、前
記主遮断部駆動装置または抵抗遮断部駆動装置に取り付
けられ、遮断時には、前記主遮断部駆動装置から前記主
遮断部に開極駆動力を与える時間に対して、前記抵抗遮
断部駆動装置から前記抵抗遮断部に開極駆動力を与える
時間を遅らせるように構成された遅延装置を有すること
を特徴としている。A puffer-type gas circuit breaker with resistance according to the present invention has two or more pairs of main breaker parts and resistance breaker parts each having a puffer structure in a grounding container filled with arc-extinguishing gas. In a puffer-type gas circuit breaker with resistance greater than or equal to the point cutting, a conductive support member disposed in substantially the center of the grounding container, to which the main blocking part and the resistance blocking part are fixed, and the grounding container, A support insulating cylinder arranged in the first direction with respect to the conductive support member and fixing the conductive support member to the inner surface of the ground container;
Is arranged in a second or third direction in the ground container different from the first direction with respect to the conductive support member,
An insulating operating rod for a main breaking portion and an insulating operating rod for a resistance breaking portion respectively driving the main breaking portion and the resistance breaking portion, and an insulating operating rod for the main breaking portion and a resistor arranged in the atmosphere outside the grounding container. A main breaker drive device and a resistance breaker drive device that are respectively connected to the insulated operating rods for the breaker, and the main breaker drive device or the resistance breaker drive device. A delay device configured to delay the time for applying the opening drive force from the resistance breaker driving device to the resistance breaker with respect to the time for applying the opening drive force to the main breaker. There is.
【0009】この場合、例えば、主遮断部駆動装置およ
び抵抗遮断部駆動装置として、油圧シリンダを使用し、
遅延装置として、油圧シリンダ間を連結する油圧遅延装
置を使用することが可能である。また、導電性支持部材
に対する支持絶縁筒の配置方向や、導電性支持部材に対
する主遮断部用絶縁操作棒および抵抗遮断部用絶縁操作
棒の配置方向は、適宜選択可能であるが、一般的には、
主遮断部用絶縁操作棒および抵抗遮断部用絶縁操作棒
を、導電性支持部材の真下に配置し、支持絶縁筒を、導
電性支持部材に対するそれ以外の方向、すなわち、上方
や斜め上方向、水平方向、斜め下方向などに配置する。
あるいはまた、主遮断部用絶縁操作棒と抵抗遮断部用絶
縁操作棒を、導電性支持部材に対する異なる方向に配置
することも可能である。In this case, for example, hydraulic cylinders are used as the main breaker drive unit and the resistance breaker drive unit,
As the delay device, it is possible to use a hydraulic delay device that connects hydraulic cylinders. Further, the arrangement direction of the support insulating cylinder with respect to the conductive support member, and the arrangement direction of the main breaker insulating operation rod and the resistance breaker insulating operation rod with respect to the conductive support member can be appropriately selected, but generally Is
The insulating operation rod for the main breaking portion and the insulating operation rod for the resistance breaking portion are arranged directly below the conductive supporting member, and the supporting insulating cylinder is in the other direction relative to the conductive supporting member, that is, in the upward or diagonally upward direction, Place horizontally or diagonally downward.
Alternatively, it is possible to dispose the insulation operating rod for the main breaking portion and the insulation operating rod for the resistance breaking portion in different directions with respect to the conductive support member.
【0010】[0010]
【作用】以上のように構成された本発明においては、主
遮断部駆動装置に取り付けた遅延装置によって、遮断時
には、抵抗遮断部を主遮断部より一定時間遅れて開極さ
せ、サージ電圧を十分に低下させることができる。ま
た、閉極時には、抵抗遮断部の固定接触子部にバネと浮
動接触子などを設けるという公知の技術を利用するか、
あるいは、抵抗遮断部に主遮断部に先行する閉極駆動力
を与えることにより、抵抗遮断部を主遮断部より一定時
間先に閉極させ、サージ電圧を十分に低下させることが
できる。According to the present invention having the above-described structure, the delay device attached to the main breaker drive unit causes the resistance breaker to be opened after a certain time delay from the main breaker at the time of breaking so that the surge voltage is sufficiently high. Can be reduced to Further, at the time of closing the pole, use a known technique of providing a spring and a floating contactor on the fixed contactor portion of the resistance interruption part, or
Alternatively, by applying a closing drive force preceding the main breaking unit to the resistance breaking unit, the resistance breaking unit can be closed for a certain period of time before the main breaking unit, and the surge voltage can be sufficiently reduced.
【0011】さらに、導電性支持部材に主遮断部および
抵抗遮断部を固定した場合に、導電性支持部材を接地容
器に対して支持する支持絶縁筒と、主遮断部および抵抗
遮断部をそれぞれ駆動する主遮断部用絶縁操作棒および
抵抗遮断部用絶縁操作棒とを、導電性支持部材に対して
同一方向に配置すると、支持絶縁筒の内外に絶縁操作棒
を配置することになり、構成が複雑化する。そのため、
部品間の絶縁裕度の確保、絶縁操作棒の配置、および部
品の組み立てなどが困難になり、設計の自由度が低下す
る。これに対して、本発明においては、支持絶縁筒と、
主遮断部用絶縁操作棒および抵抗遮断部用絶縁操作棒と
を、導電性支持部材に対して異なる方向に配置するた
め、支持絶縁筒と絶縁操作棒との配置スペースが重なる
ことがなく、構成が簡略である。そのため、部品間の絶
縁裕度の確保、絶縁操作棒の配置、および部品の組み立
てなどを容易に行うことができ、また、設計の自由度も
高い。Further, when the main breaking portion and the resistance breaking portion are fixed to the conductive supporting member, the supporting insulating cylinder for supporting the conductive supporting member with respect to the ground container and the main breaking portion and the resistance breaking portion are respectively driven. When the insulation operating rod for the main breaking portion and the insulation operating rod for the resistance breaking portion are arranged in the same direction with respect to the conductive support member, the insulating operating rod is arranged inside and outside the supporting insulating cylinder. It gets complicated. for that reason,
It becomes difficult to secure the insulation margin between parts, arrange the insulating operation rod, and assemble the parts, so that the degree of freedom in design decreases. On the other hand, in the present invention, the supporting insulating cylinder,
The insulating operation rod for the main breaking portion and the insulating operation rod for the resistance breaking portion are arranged in different directions with respect to the conductive supporting member, so that the supporting insulating cylinder and the insulating operating rod do not overlap with each other in the arrangement space. Is simple. Therefore, it is possible to easily secure the insulation margin between the parts, arrange the insulating operation rod, assemble the parts, and the like, and also have a high degree of freedom in design.
【0012】[0012]
【実施例】以下には、本発明による抵抗付きパッファ形
ガス遮断器の代表的な一実施例について、図1乃至図3
を参照して具体的に説明する。この場合、図1は側面
図、図2は垂直断面図、図3は水平断面図(A)とリン
ク部のX矢視図(B)である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A typical embodiment of a puffer type gas circuit breaker with a resistor according to the present invention will be described below with reference to FIGS.
It will be specifically described with reference to. In this case, FIG. 1 is a side view, FIG. 2 is a vertical cross-sectional view, and FIG. 3 is a horizontal cross-sectional view (A) and a cross-sectional view (B) of the link portion taken along arrow X.
【0013】まず、図3の(A)に示すように、消弧性
ガスとして、SF6 ガスが充填された接地容器1内に
は、直列に接続された2組の主遮断部2、直列に接続さ
れた2組の抵抗遮断部3、およびこの抵抗遮断部3と直
列に接続された抵抗4が収納されている。この場合、主
遮断部2と、抵抗遮断部3と抵抗4の直列接続とは、電
気的に並列に接続されている。なお、これらの2組の主
遮断部2および抵抗遮断部3は、同一の構成を有するよ
うに、対称的に設けられているため、図面の簡略化の観
点から、図2および図3の(A)においては、片側の主
遮断部2および抵抗遮断部3の表示を省略している。First, as shown in FIG. 3 (A), two sets of main shutoff units 2 connected in series are connected in a grounding container 1 filled with SF 6 gas as an arc extinguishing gas. There are stored two sets of resistance breaking units 3 connected to each other, and a resistor 4 connected in series with the resistance breaking unit 3. In this case, the main breaker 2 and the series connection of the resistance breaker 3 and the resistor 4 are electrically connected in parallel. Since the two sets of the main cutoff portion 2 and the resistance cutoff portion 3 are symmetrically provided so as to have the same configuration, from the viewpoint of simplification of the drawings, (in FIG. 2 and FIG. In A), the display of the main breaker 2 and the resistance breaker 3 on one side is omitted.
【0014】より詳細には、主遮断部2は、図2に示す
ように、パッファシリンダを有する可動接触子部2a、
固定接触子部2b、可動接触子部2a側から固定接触子
部2bを支持する絶縁棒(または絶縁筒)2cなどによ
って構成されている。また、抵抗遮断部3は、図3の
(A)に示すように、可動接触子部3a、固定接触子部
3bなどによって構成されている。さらに、抵抗遮断部
3の固定接触子部3は、その内部にバネ3cおよび浮動
接触子3dを有し、これらの動作によって、開極終了時
の開離距離が主遮断部2の開離距離よりも短くなるよう
に構成されている。More specifically, as shown in FIG. 2, the main cutoff portion 2 includes a movable contactor portion 2a having a puffer cylinder,
The fixed contactor portion 2b and the movable contactor portion 2a are configured by an insulating rod (or insulating cylinder) 2c that supports the fixed contactor portion 2b from the side. Further, the resistance breaker 3 is composed of a movable contactor 3a, a fixed contactor 3b, etc., as shown in FIG. Further, the fixed contactor portion 3 of the resistance breaking portion 3 has a spring 3c and a floating contactor 3d inside thereof, and by these operations, the opening distance at the end of opening is the opening distance of the main breaking portion 2. It is configured to be shorter than.
【0015】接地容器1の下方には、図1および図2に
示すように、分岐部1aが形成されており、接地容器1
は、この分岐部1aによって両遮断部駆動用の操作機構
部5上に固定されている。この操作機構部5は、大気側
の外部ケース5aと接地容器1と連通する内部ケース5
bを備えている。外部ケース5aの大気中には、主遮断
部駆動用油圧シリンダ(主遮断部駆動装置)6a、連結
部6b、リンクレバー6c、抵抗遮断部駆動用油圧シリ
ンダ(抵抗遮断部駆動装置)7a、それに連結されるロ
ッド(図示されていない)、およびリンクレバー7cが
設けられている。また、内部ケース5bのガス雰囲気中
には、主遮断部駆動用油圧シリンダ6aと連結されるリ
ンクレバー6d、および抵抗遮断部駆動用油圧シリンダ
7aと連結されるリンクレバー7dが設けられている。A branch portion 1a is formed below the grounding container 1 as shown in FIGS. 1 and 2, and the grounding container 1 is formed.
Is fixed on the operating mechanism section 5 for driving both blocking sections by this branch section 1a. The operation mechanism section 5 includes an outer case 5 a on the atmosphere side and an inner case 5 that communicates with the ground container 1.
b. In the atmosphere of the outer case 5a, the main cutoff drive hydraulic cylinder (main cutoff drive) 6a, the connecting portion 6b, the link lever 6c, the resistance cutoff drive hydraulic cylinder (resistance cutoff drive) 7a, and A rod (not shown) to be connected and a link lever 7c are provided. Further, in the gas atmosphere of the inner case 5b, there are provided a link lever 6d connected to the main cutoff drive hydraulic cylinder 6a and a link lever 7d connected to the resistance cutoff drive hydraulic cylinder 7a.
【0016】接地容器1のほぼ中央部には、図2および
図3の(A)に示すように、箱状のセンタピース(導電
性支持部材)8が配置されており、このセンタピース8
の両側に、前述の2組の主遮断部2および抵抗遮断部3
が取り付けられている。接地容器1におけるセンタピー
ス8のほぼ真上には、フランジ1bが設けられており、
このフランジ1bに支持絶縁筒9が下向きに取り付けら
れ、この支持絶縁筒9によってセンタピース8が支持さ
れている。すなわち、センタピース8は、支持絶縁筒9
を介して接地容器1に絶縁支持されている。As shown in FIGS. 2 and 3 (A), a box-shaped center piece (conductive support member) 8 is arranged at substantially the center of the grounding container 1.
The two sets of the main breaker 2 and the resistance breaker 3 are provided on both sides of the
Is attached. A flange 1b is provided almost directly above the center piece 8 in the grounding container 1,
The supporting insulating cylinder 9 is attached downward to the flange 1b, and the center piece 8 is supported by the supporting insulating cylinder 9. That is, the center piece 8 has the support insulating tube 9
It is insulated and supported by the grounding container 1 via.
【0017】センタピース8の内部には、図2に示すよ
うに、2組の主遮断部2の可動接触子部2aにそれぞれ
連結されて駆動力を伝達する2つのリンク10a,10
bが配置されると共に、図3の(B)に示すように、2
組の抵抗遮断部3の可動接触子部3aにそれぞれ連結さ
れて駆動力を伝達する2つのリンク11a,11bが配
置されている。そして、図1に示すように、主遮断部2
用のリンク10a,10bは、主遮断部用絶縁操作棒1
2を介して、操作機構部5の内部ケース5b内のリンク
レバー6dに連結されており、抵抗遮断部3用のリンク
11a,11bは、抵抗遮断部用絶縁操作棒13を介し
て、操作機構部5の内部ケース5b内のリンクレバー7
dに連結されている。この場合、主遮断部用絶縁操作棒
12および抵抗遮断部用絶縁操作棒13は、図1に示す
ように、共に、センタピース8の垂直方向下方に伸びる
ように配置されている。Inside the center piece 8, as shown in FIG. 2, two links 10a, 10 are respectively connected to the movable contact portions 2a of the two main breaking portions 2 to transmit the driving force.
b is arranged, and as shown in FIG.
Two links 11a and 11b, which are respectively connected to the movable contactor portions 3a of the pair of resistance breaking portions 3 and transmit the driving force, are arranged. Then, as shown in FIG.
Links 10a and 10b are for the main breaker insulation operating rod 1
2 is connected to the link lever 6d in the inner case 5b of the operating mechanism unit 5, and the links 11a and 11b for the resistance breaking unit 3 are operated via the resistance breaking unit insulated operating rod 13. Link lever 7 in the inner case 5b of the part 5
It is connected to d. In this case, both the main breaker insulation operation rod 12 and the resistance breaker insulation operation rod 13 are arranged so as to extend vertically below the center piece 8 as shown in FIG.
【0018】一方、操作機構部5の外部ケース5a内の
大気中には、図1に示すような位置関係で、主遮断部駆
動用油圧シリンダ6aと抵抗遮断部駆動用油圧シリンダ
7aが配置されており、抵抗遮断部駆動用油圧シリンダ
7aは、油圧遅延装置14を介して主遮断部用油圧シリ
ンダ6aと連結されている。この油圧遅延装置14は、
遮断器の遮断時に、主遮断部駆動用油圧シリンダ6aに
よる主遮断部2の開極駆動力に比べて遅れた開極駆動力
を抵抗遮断部駆動用油圧シリンダ7aに与え、また、閉
極時には作用しないように構成されている。On the other hand, in the atmosphere in the outer case 5a of the operation mechanism section 5, the main cutoff section drive hydraulic cylinder 6a and the resistance cutoff section drive hydraulic cylinder 7a are arranged in a positional relationship as shown in FIG. The hydraulic cylinder 7a for driving the resistance cutoff portion is connected to the hydraulic cylinder 6a for the main cutoff portion via the hydraulic pressure delay device 14. This hydraulic delay device 14 is
When the circuit breaker is shut off, an opening drive force delayed from the opening drive force of the main shutoff unit 2 by the main shutoff unit drive hydraulic cylinder 6a is applied to the resistance shutoff unit drive hydraulic cylinder 7a. It is configured to not work.
【0019】以上のような構成を有する本実施例の作用
は次の通りである。すなわち、遮断時には、主遮断部駆
動用の制御装置(図示していない)に開極信号を与え、
主遮断部駆動用油圧シリンダ6aに送油して開極駆動力
を与えることにより、主遮断部2がまず開極する。この
場合、抵抗遮断部駆動用油圧シリンダ7aには、油圧遅
延装置14により、主遮断部2の開極駆動力よりも遅れ
た開極駆動力が与えられる。この場合の遅延時間は、油
圧遅延装置14の調整によって適宜設定することが可能
である。図4は、本実施例の構成において得られる主遮
断部2と抵抗遮断部3の開極特性の一例を示している。
このように、本実施例においては、遮断時に、主遮断部
2の開極後、抵抗遮断部3の開極までに必要な遅れ時間
を容易に確保することができるため、抵抗4に流れる電
流により、サージ電圧を十分に低下させることができ
る。The operation of this embodiment having the above construction is as follows. That is, at the time of interruption, an opening signal is given to a control device (not shown) for driving the main interruption part,
By supplying oil to the hydraulic oil cylinder 6a for driving the main shutoff portion and applying a driving force for opening the main shutoff portion, the main shutoff portion 2 first opens. In this case, the hydraulic disconnecting portion driving hydraulic cylinder 7a is provided with the opening driving force delayed by the hydraulic delay device 14 from the opening driving force of the main breaking portion 2. The delay time in this case can be appropriately set by adjusting the hydraulic delay device 14. FIG. 4 shows an example of the opening characteristics of the main breaking unit 2 and the resistance breaking unit 3 obtained in the configuration of this embodiment.
As described above, in the present embodiment, at the time of breaking, it is possible to easily secure the delay time required after the main breaking portion 2 is opened and before the resistance breaking portion 3 is opened. As a result, the surge voltage can be sufficiently reduced.
【0020】また、開極が終了した段階では、抵抗遮断
部3の固定接触子部3bに設けられたバネ3cおよび浮
動接触子3dの作用により、抵抗遮断部3の開離距離が
主遮断部2の開離距離よりも短くなる。従って、閉極時
には、主遮断部駆動用油圧シリンダ6aおよび抵抗遮断
部駆動用油圧シリンダ7aに同時に閉極力を与えること
により、抵抗遮断部3の先行閉極動作が得られる。Further, when the contact opening is completed, the opening distance of the resistance breaking portion 3 is changed to the main breaking portion by the action of the spring 3c and the floating contact 3d provided on the fixed contact portion 3b of the resistance breaking portion 3. It becomes shorter than the separation distance of 2. Therefore, at the time of closing, the preceding closing operation of the resistance breaking unit 3 can be obtained by simultaneously applying the closing force to the main breaking unit driving hydraulic cylinder 6a and the resistance breaking unit driving hydraulic cylinder 7a.
【0021】以上のように、本実施例においては、遮断
時の抵抗遮断部の遅れ開極動作と、閉極時の先行閉極動
作を容易かつ確実に行うことができる。また、支持絶縁
筒9と主遮断部用絶縁操作棒12および抵抗遮断部用絶
縁操作棒13とを、センタピース8に対して異なる方向
に配置しているため、支持絶縁筒9と絶縁操作棒12,
13との配置スペースが重なることがなく、構成が簡略
である。そのため、部品間の絶縁裕度の確保、絶縁操作
棒の配置、および部品の組み立てなどを容易に行うこと
ができ、設計の自由度も高くなっている。特に、本実施
例においては、主遮断部駆動装置および抵抗遮断部駆動
装置として、油圧シリンダ6a,7aを使用し、これら
の油圧シリンダ6a,6b間を油圧遅延装置14で連結
しているため、容易かつ経済的に構成でき、実用性を向
上できる。従って、本実施例によれば、1100kV用
などの超高電圧用の2点切りの抵抗付きパッファ形ガス
遮断器を容易かつ経済的に構成でき、実用性にも優れて
いる。As described above, in the present embodiment, the delayed opening operation of the resistance breaking portion at the time of breaking and the preceding closing operation at the time of closing can be easily and surely performed. Further, since the supporting insulating cylinder 9, the main breaking portion insulating operating rod 12 and the resistance breaking portion insulating operating rod 13 are arranged in different directions with respect to the center piece 8, the supporting insulating barrel 9 and the insulating operating rod are arranged. 12,
The arrangement space with 13 does not overlap, and the configuration is simple. Therefore, it is possible to easily secure the insulation margin between the parts, arrange the insulation operation rod, assemble the parts, and the like, and the degree of freedom in design is high. In particular, in the present embodiment, since the hydraulic cylinders 6a and 7a are used as the main cutoff drive unit and the resistance cutoff drive unit, and the hydraulic cylinders 6a and 6b are connected by the hydraulic delay unit 14, It can be constructed easily and economically, and its practicality can be improved. Therefore, according to this embodiment, a puffer type gas circuit breaker with a two-point cut resistor for ultra-high voltage such as 1100 kV can be easily and economically constructed and is excellent in practicality.
【0022】なお、本発明は、前記実施例に限定される
ものではなく、支持絶縁筒9と、主遮断部用絶縁操作棒
12および抵抗遮断部用絶縁操作棒13の配置は、自由
に変更可能であり、例えば、図5乃至図7に示すような
構成が可能である。この図5乃至図7に示す実施例にお
いて、主遮断部用絶縁操作棒12および抵抗遮断部用絶
縁操作棒13は、前記実施例と同様に、共に、センタピ
ース8の垂直方向下方に伸びるように配置されている
が、支持絶縁筒9の配置が異なる。すなわち、この実施
例においては、接地容器1におけるセンタピース8の水
平方向に、フランジ1cが設けられており、このフラン
ジ1cに支持絶縁筒9が水平方向に取り付けられ、この
支持絶縁筒9によってセンタピース8が支持されてい
る。このように配置した場合にも、前記実施例と同様の
作用効果が得られる。The present invention is not limited to the above-mentioned embodiment, and the arrangement of the supporting insulating cylinder 9, the main breaking portion insulating operating rod 12 and the resistance breaking portion insulating operating rod 13 can be freely changed. This is possible, and for example, the configurations shown in FIGS. 5 to 7 are possible. In the embodiment shown in FIG. 5 to FIG. 7, both the main breaker insulation operating rod 12 and the resistance breaker insulating operating rod 13 extend downward in the vertical direction of the center piece 8 as in the previous embodiments. However, the arrangement of the supporting insulating cylinder 9 is different. That is, in this embodiment, the flange 1c is provided in the horizontal direction of the center piece 8 in the grounding container 1, and the supporting insulating cylinder 9 is attached to the flange 1c in the horizontal direction. The piece 8 is supported. Even in the case of such an arrangement, the same operational effects as those of the above-described embodiment can be obtained.
【0023】また、図示していないが、支持絶縁筒9
を、センタピース8に対して、前記各実施例以外の方
向、すなわち、上方や斜め上方向、斜め下方向などに配
置することも可能である。さらに、主遮断部用絶縁操作
棒12および抵抗遮断部用絶縁操作棒13をセンタピー
ス8の下方以外に配置することも可能であり、主遮断部
用絶縁操作棒12と抵抗遮断部用絶縁操作棒13とを互
いに異なる方向に配置することも可能である。Although not shown, the supporting insulating cylinder 9 is also provided.
Can be arranged with respect to the center piece 8 in a direction other than the above-mentioned respective embodiments, that is, in an upper direction, an obliquely upward direction, an obliquely downward direction, or the like. Further, it is also possible to dispose the main operating portion insulating operation rod 12 and the resistance operating portion insulating operation rod 13 other than below the center piece 8, and the main operating portion insulating operation rod 12 and the resistance operating portion insulating operation are performed. It is also possible to arrange the bars 13 in different directions.
【0024】一方、遅延装置は、油圧遅延装置に限ら
ず、例えば、電気的な遅延装置を使用することも可能で
あり、また、主遮断部駆動装置および抵抗遮断部駆動装
置は、油圧シリンダに限らず、例えば、バネ利用の駆動
装置を使用することなどが可能である。On the other hand, the delay device is not limited to the hydraulic delay device, but it is also possible to use, for example, an electric delay device, and the main cutoff drive unit and the resistance cutoff drive unit are hydraulic cylinders. Not limited to this, it is possible to use a drive device using a spring, for example.
【0025】さらにまた、前記実施例のように、抵抗遮
断部の固定接触子部にバネと浮動接触子を設け、両遮断
部の開離距離に差を与える構成も可能であるが、両遮断
部の開離距離をほぼ同じに構成すると共に、電気的な遅
延装置を使用して、抵抗遮断部に与える開極信号を主遮
断部に与える開極信号より一定時間遅らせるように構成
することも可能である。この場合、閉極時には、抵抗遮
断部への閉極信号を、主遮断部に与える閉極信号より一
定時間先に与えることになる。Further, as in the above-mentioned embodiment, it is possible to provide a spring and a floating contact on the fixed contact portion of the resistance breaking portion to give a difference in the opening distance between both breaking portions. It is also possible to configure the opening distances of the parts to be approximately the same, and to use an electrical delay device to delay the opening signal given to the resistance breaking part by a certain time from the opening signal given to the main breaking part. It is possible. In this case, at the time of closing, the closing signal to the resistance breaking unit is given before the closing signal given to the main breaking unit by a certain time.
【0026】[0026]
【発明の効果】以上述べたように、本発明においては、
主遮断部駆動装置または抵抗遮断部駆動装置に遅延装置
を取り付けると共に、導電性支持部材を接地容器に対し
て支持する支持絶縁筒と、主遮断部および抵抗遮断部を
それぞれ駆動する主遮断部用絶縁操作棒および抵抗遮断
部用絶縁操作棒とを、導電性支持部材に対して異なる方
向に配置することにより、2点切り以上の抵抗付きパッ
ファ形ガス遮断器において、遮断時には抵抗遮断部を主
遮断部より一定時間遅れて開極させ、閉極時には抵抗遮
断部を主遮断部より先に閉極することの可能な、実用性
および信頼性の高い抵抗付きパッファ形ガス遮断器を提
供することができる。As described above, according to the present invention,
A support insulating cylinder for mounting the delay device on the main breaker drive device or the resistance breaker drive device, and for supporting the conductive support member with respect to the grounding container, and for the main breaker driving the main breaker and the resistance breaker respectively. By arranging the insulation operating rod and the insulation operating rod for the resistance breaker in different directions with respect to the conductive support member, in the puffer type gas circuit breaker with a resistance of two or more cuts, the resistance breaking part is mainly used when breaking. To provide a puffer-type gas circuit breaker with a resistance, which is highly practical and reliable, in which it is possible to open the electrode after a certain time delay from the interrupting part and to close the resistance interrupting part before closing the main interrupting part when closing. You can
【図1】本発明による抵抗付きパッファ形ガス遮断器の
代表的な一実施例を示す側面図。FIG. 1 is a side view showing a typical embodiment of a puffer type gas circuit breaker with resistance according to the present invention.
【図2】図1の抵抗付きパッファ形ガス遮断器の垂直断
面図。FIG. 2 is a vertical sectional view of the puffer type gas circuit breaker with resistance shown in FIG.
【図3】図1の抵抗付きパッファ形ガス遮断器の水平断
面図(A)とリンク部のX矢視図(B)。FIG. 3 is a horizontal sectional view (A) of the puffer type gas circuit breaker with a resistance shown in FIG. 1 and a view (B) taken along arrow X of the link portion.
【図4】図1の抵抗付きパッファ形ガス遮断器において
得られる主遮断部2と抵抗遮断部3の開極特性の一例を
示す特性図。FIG. 4 is a characteristic diagram showing an example of the opening characteristics of the main breaking unit 2 and the resistance breaking unit 3 obtained in the puffer type gas circuit breaker with resistance of FIG.
【図5】本発明による抵抗付きパッファ形ガス遮断器の
別の実施例を示す側面図。FIG. 5 is a side view showing another embodiment of the puffer type gas circuit breaker with resistance according to the present invention.
【図6】図5の抵抗付きパッファ形ガス遮断器の垂直断
面図。6 is a vertical sectional view of the puffer type gas circuit breaker with resistance shown in FIG. 5;
【図7】図5の抵抗付きパッファ形ガス遮断器の水平断
面図(A)とリンク部のX矢視図(B)。FIG. 7 is a horizontal sectional view (A) of the puffer type gas circuit breaker with resistance shown in FIG. 5 and a view (B) taken along arrow X of the link portion.
【図8】抵抗付き遮断器が事故電流を遮断する場合の動
作の原理を示す原理図であり、(A)は閉極状態、
(B)は抵抗遮断部を閉極状態としたままの主遮断部の
開極状態、(C)は開極状態。FIG. 8 is a principle diagram showing a principle of operation when a circuit breaker with a resistor interrupts a fault current, and (A) shows a closed state;
(B) is the open state of the main breaker while the resistance breaker is in the closed state, and (C) is the open state.
1…接地容器 1a…分岐部 1b,1c…フランジ 2…主遮断部 2a…可動接触子部 2b…固定接触子部 2c…絶縁棒 3…抵抗遮断部 3a…可動接触子部 3b…固定接触子部 3c…バネ 3d…浮動接触子 4…抵抗 5…操作機構部 5a…外部ケース 5b…内部ケース 6a…主遮断部駆動用油圧シリンダ(主遮断部駆動装
置) 6b…連結部 6c,6d…リンクレバー 7a…抵抗遮断部駆動用油圧シリンダ(抵抗遮断部駆動
装置) 7c,7d…リンクレバー 8…センタピース(導電性支持部材) 9…支持絶縁筒 10a,10b,11a,11b…リンク 12…主遮断部用絶縁操作棒 13…抵抗遮断部用絶縁操作棒 14…油圧遅延装置DESCRIPTION OF SYMBOLS 1 ... Grounding container 1a ... Branch part 1b, 1c ... Flange 2 ... Main interruption | blocking part 2a ... Movable contactor part 2b ... Fixed contactor part 2c ... Insulation rod 3 ... Resistance interruption | blocking part 3a ... Movable contactor part 3b ... Fixed contactor Part 3c ... Spring 3d ... Floating contactor 4 ... Resistor 5 ... Operation mechanism part 5a ... Outer case 5b ... Inner case 6a ... Main breaking part driving hydraulic cylinder (main breaking part driving device) 6b ... Coupling part 6c, 6d ... Link Lever 7a ... Hydraulic cylinder for driving the resistance cutoff portion (drive device for resistance cutoff portion) 7c, 7d ... Link lever 8 ... Center piece (conductive support member) 9 ... Support insulating cylinder 10a, 10b, 11a, 11b ... Link 12 ... Main Insulation operating rod for breaking unit 13 ... Insulation operating rod for resistance breaking unit 14 ... Hydraulic delay device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 佐藤 敏和 神奈川県川崎市川崎区浮島町2番1号 株 式会社東芝浜川崎工場内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshikazu Sato 2-1, Ukishimacho, Kawasaki-ku, Kawasaki-shi, Kanagawa Stock company Toshiba Hamakawasaki Factory
Claims (1)
ッファ構成の主遮断部および抵抗遮断部をそれぞれ2組
以上有する2点切り以上の抵抗付きパッファ形ガス遮断
器において、 前記接地容器内のほぼ中央部に配置され、前記主遮断部
および抵抗遮断部が固定される導電性支持部材と、 前記接地容器内の、前記導電性支持部材に対する第1の
方向に配置され、前記接地容器の内面に対して前記導電
性支持部材を固定する支持絶縁筒と、 前記接地容器内の、前記導電性支持部材に対する前記第
1の方向とは異なる第2または第3の方向に配置され、
前記主遮断部および抵抗遮断部をそれぞれ駆動する主遮
断部用絶縁操作棒および抵抗遮断部用絶縁操作棒と、 前記接地容器外の大気中に配置され、前記主遮断部用絶
縁操作棒および抵抗遮断部用絶縁操作棒にそれぞれ連結
される主遮断部駆動装置および抵抗遮断部駆動装置と、 前記主遮断部駆動装置または抵抗遮断部駆動装置に取り
付けられ、遮断時には、前記主遮断部駆動装置から前記
主遮断部に開極駆動力を与える時間に対して、前記抵抗
遮断部駆動装置から前記抵抗遮断部に開極駆動力を与え
る時間を遅らせるように構成された遅延装置を有するこ
とを特徴とする抵抗付きパッファ形ガス遮断器。1. A puffer-type gas circuit breaker with two or more points of resistance having two or more pairs of main breaker portions and resistance breaker portions each having a puffer structure in a grounding vessel filled with an arc-extinguishing gas. An electrically conductive support member, which is disposed substantially in the center of the grounding container and to which the main blocking portion and the resistance blocking portion are fixed, and which is disposed in the ground container in a first direction with respect to the conductive supporting member, A support insulating cylinder for fixing the conductive support member to the inner surface of the, and arranged in a second or third direction in the ground container different from the first direction with respect to the conductive support member,
An insulation operating rod for a main breaking portion and an insulating operating rod for a resistance breaking portion that drive the main breaking portion and the resistance breaking portion, respectively, and an insulating operating rod for the main breaking portion and a resistor arranged in the atmosphere outside the grounding container. A main breaker drive device and a resistance breaker drive device that are respectively connected to the insulated operating rods for the breaker, and a main breaker drive device or a resistance breaker drive device that is attached to the main breaker drive device when breaking. A delay device configured to delay a time for applying the opening driving force from the resistance breaking unit driving device to the resistance breaking unit with respect to a time for applying the opening driving force to the main breaking unit. Puffer type gas circuit breaker with resistance.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25611092A JP3369221B2 (en) | 1992-09-25 | 1992-09-25 | Puffer type gas circuit breaker with resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP25611092A JP3369221B2 (en) | 1992-09-25 | 1992-09-25 | Puffer type gas circuit breaker with resistance |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06111691A true JPH06111691A (en) | 1994-04-22 |
JP3369221B2 JP3369221B2 (en) | 2003-01-20 |
Family
ID=17288038
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP25611092A Expired - Fee Related JP3369221B2 (en) | 1992-09-25 | 1992-09-25 | Puffer type gas circuit breaker with resistance |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3369221B2 (en) |
-
1992
- 1992-09-25 JP JP25611092A patent/JP3369221B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JP3369221B2 (en) | 2003-01-20 |
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