JP2008271715A - Switching device - Google Patents

Switching device Download PDF

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JP2008271715A
JP2008271715A JP2007112165A JP2007112165A JP2008271715A JP 2008271715 A JP2008271715 A JP 2008271715A JP 2007112165 A JP2007112165 A JP 2007112165A JP 2007112165 A JP2007112165 A JP 2007112165A JP 2008271715 A JP2008271715 A JP 2008271715A
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pressure vessel
contact
movable
operation mechanism
main contact
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JP2007112165A
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JP4953898B2 (en
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Takeshi Komatsu
健 小松
Daiji Matsuda
大二 松田
Tomohito Mori
智仁 森
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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Priority to JP2007112165A priority Critical patent/JP4953898B2/en
Priority to CN2007101286843A priority patent/CN101291044B/en
Publication of JP2008271715A publication Critical patent/JP2008271715A/en
Priority to HK09102033.6A priority patent/HK1124438A1/en
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  • Arc-Extinguishing Devices That Are Switches (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a switching device with its height lowered from the installation surface to facilitate transportation and maintenance and inspection and to increase the freedom in arrangement of other devices around the switching device. <P>SOLUTION: The switching device includes: a main contact point part 1 (Fig.2) having a movable contact point (a movable contact piece) 1a and a fixed main contact point (a fixed contact piece) 1b; a pressure vessel 40 having a long size in the moving direction of the movable contact piece 1a, with the main contact point insulated and accommodated in the pressure vessel and filled with insulation gas and installed horizontally in the longitudinal direction; and an operation mechanism 50 provided above the pressure vessel 40 and connected to the movable contact piece 1a via the connection mechanism 6 consisting of an insulation material. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

この発明は発電・変電などの電力系統で使用される開閉機器に関するものである。   The present invention relates to a switchgear used in a power system such as power generation / transformation.

従来、開閉機器は、固定接触子と当該固定接触子に接離する可動接触子を有する主接点部と、この主接点部を収納するとともに絶縁ガスが充填された圧力容器とを備えている。そして、このような開閉機器には、可動接触子を固定接触子に対して進退動させて主接点部を開閉する操作機構が設けられていることが多い。   2. Description of the Related Art Conventionally, a switchgear includes a main contact portion having a fixed contact and a movable contact contacting and separating from the fixed contact, and a pressure vessel that houses the main contact and is filled with an insulating gas. Such an opening / closing device is often provided with an operation mechanism that opens and closes the main contact portion by moving the movable contact forward and backward with respect to the fixed contact.

この操作機構は、一般に液圧式で蓄勢エネルギ媒体を利用して駆動する構造とされており、電気的に絶縁された絶縁ロッドやリンク機構を介して可動接触子に連結されている。そして、電力系統の事故時等に発令される動作指令を受けて、液圧式操作機構が動作して、主接点部を開成することにより事故電流を遮断する（例えば、特許文献１参照）。   This operation mechanism is generally configured to be driven by a hydraulic type using a stored energy medium, and is connected to a movable contact via an electrically insulated insulating rod or a link mechanism. Then, in response to an operation command issued in the event of a power system accident or the like, the hydraulic operation mechanism operates to open the main contact portion, thereby interrupting the accident current (see, for example, Patent Document 1).

特開２００３−２６４９１４号公報JP 2003-264914 A

しかしながら、上記のような従来の開閉機器によれば、液圧式操作機構は、圧力容器の下部（鉛直下）に設けられた操作機構箱内に設けられていた。この操作機構箱には、液圧式操作機構の他に操作機構の補器類も収納されていた。   However, according to the conventional opening / closing device as described above, the hydraulic operation mechanism is provided in the operation mechanism box provided in the lower part (vertically below) of the pressure vessel. In addition to the hydraulic operation mechanism, the operation mechanism box also accommodates auxiliary devices for the operation mechanism.

このように従来の開閉機器においては、圧力容器の鉛直下に操作機構箱を配置して操作機構をその内部に収納する構成としているため、機器の高さ（圧力容器の高さ）が高いという課題があった。特に、母線（タンクの内部に導体が配置されて構成されている）が圧力容器に接続されるような方式の開閉機器の場合には、その高さが障害となり屋内などに設置される際に容易でなく課題であった。さらに、機器の高さは輸送及び保守点検する際にも障害となり課題であった。   As described above, in the conventional opening / closing device, the operation mechanism box is arranged vertically below the pressure vessel and the operation mechanism is accommodated therein, so that the height of the device (height of the pressure vessel) is high. There was a problem. In particular, in the case of a switchgear with a system in which the busbar (constituted with a conductor arranged inside the tank) is connected to the pressure vessel, when the height is an obstacle, and it is installed indoors, etc. It was not an easy task. In addition, the height of the equipment has become an obstacle during transportation and maintenance inspection.

また、従来の他の開閉機器として、長尺の圧力容器の一端に操作機構箱を配置するものがある。このような圧力容器の一端に操作機構箱を配置するものにおいては、機器の高さ（圧力容器の高さ）が高くなることはないが、機器の長さが長くなり広い設置スペースを必要とするという欠点があるとともに、周囲に配置される他機器の配置自由度を小さくするので課題となっていた。   As another conventional opening / closing device, there is one in which an operation mechanism box is arranged at one end of a long pressure vessel. In the case where the operation mechanism box is disposed at one end of such a pressure vessel, the height of the device (pressure vessel height) does not increase, but the length of the device increases and a large installation space is required. This is a problem because it reduces the degree of freedom of arrangement of other devices arranged around.

この発明は、上記のような課題を解決するためになされたもので、広い設置スペースを必要とすることなく、設置面からの機器の高さ（圧力容器の高さ）を低くして、輸送及び保守点検を容易とするとともに周囲に配置される他機器の配置自由度を大きくする開閉機器を得ることを目的とする。   The present invention has been made to solve the above-described problems, and transports the apparatus from the installation surface at a low height (pressure vessel height) without requiring a large installation space. It is another object of the present invention to provide a switching device that facilitates maintenance and inspection and increases the degree of freedom of arrangement of other devices arranged around.

上述した課題を解決し、目的を達成するために、本発明の開閉機器は、固定接触子及びこの固定接触子に接離する可動接触子を有する主接点部と、可動接触子の移動方向に長尺とされ、内部に主接点部を絶縁した状態で収納するとともに絶縁ガスが充填され、長手方向を水平にして設置される圧力容器と、圧力容器の上方に設けられ、絶縁材料でなる連結機構を介して可動接触子と連結された操作機構とを備えたことを特徴とする。   In order to solve the above-described problems and achieve the object, the switchgear of the present invention includes a main contact portion having a fixed contact and a movable contact contacting and separating from the fixed contact, and a moving direction of the movable contact. A pressure vessel that is long, accommodates the main contact portion in an insulated state and is filled with an insulating gas, and is installed with the longitudinal direction horizontal, and a connection made of an insulating material provided above the pressure vessel. And an operation mechanism connected to the movable contact through the mechanism.

また、本発明の他の開閉機器は、固定接触子及びこの固定接触子に接離する可動接触子を持つ主接点部を有する遮断器と、遮断器に接続された断路器と、可動接触子の移動方向に長尺とされ、内部に遮断器及び断路器を絶縁した状態で収納するとともに絶縁ガスが充填され、長手方向を水平にして設置される圧力容器と、圧力容器の上方に設けられ、絶縁材料でなる連結機構を介して可動接触子と連結された操作機構とを備えたことを特徴とする。   Another switchgear according to the present invention includes a circuit breaker having a main contact portion having a fixed contact and a movable contact contacting and separating from the fixed contact, a disconnector connected to the circuit breaker, and a movable contact. A pressure vessel installed in a state where the longitudinal direction is horizontal, and is provided above the pressure vessel. And an operating mechanism connected to the movable contact via a connecting mechanism made of an insulating material.

この発明によれば、操作機構が圧力容器の上方に設けられているので、広い設置スペースを必要とすることなく、設置面からの機器の高さ（圧力容器の高さ）を低くして、輸送及び保守点検を容易とするとともに周囲に配置される他機器の配置自由度を大きくするという効果を奏する。   According to this invention, since the operation mechanism is provided above the pressure vessel, the height of the device from the installation surface (height of the pressure vessel) is reduced without requiring a wide installation space, There is an effect of facilitating transportation and maintenance and increasing the degree of freedom of arrangement of other devices arranged around.

以下に、本発明にかかる開閉機器の実施の形態を図面に基づいて詳細に説明する。なお、この実施の形態によりこの発明が限定されるものではない。   DESCRIPTION OF EMBODIMENTS Embodiments of a switchgear according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

実施の形態１．
図１は本発明に係る開閉機器の実施の形態１の構造を示す横断面図である。図２は図１の開閉機器の遮断器近傍を拡大して断面とした要部拡大断面図である。図３は図１の開閉機器の側面図である。図４は図１の開閉機器の平面図である。 Embodiment 1 FIG.
FIG. 1 is a cross-sectional view showing the structure of Embodiment 1 of the switchgear according to the present invention. FIG. 2 is an enlarged cross-sectional view of a main part in which the vicinity of the circuit breaker of the switchgear of FIG. FIG. 3 is a side view of the switchgear of FIG. FIG. 4 is a plan view of the switchgear of FIG.

図１において、開閉機器１００は、圧力容器４０の中央部に設けられた遮断器１０と、圧力容器４０の両端部に設けられ遮断器１０とそれぞれ高圧中心導体（内部導体）１１にて連結された第一断路器２１及び第二断路器２２と、これら遮断器１０及び断路器２１，２２を収容する圧力容器４０と、外部からの動作指令を受けて遮断器１０を開成状態とする操作機構５０とを含んで構成されている。操作機構５０は、圧力容器４０の上部に設けられた操作機構箱５１内に収納されている。遮断器１０と操作機構５０とは、連結機構６にて連結されている。   In FIG. 1, the switchgear 100 is connected to the circuit breaker 10 provided at the center of the pressure vessel 40 and the circuit breakers 10 provided at both ends of the pressure vessel 40 by high-voltage center conductors (internal conductors) 11. The first disconnector 21 and the second disconnector 22, the pressure vessel 40 that accommodates the breaker 10 and the disconnectors 21 and 22, and the operation mechanism that opens the breaker 10 in response to an external operation command. 50. The operation mechanism 50 is accommodated in an operation mechanism box 51 provided on the upper portion of the pressure vessel 40. The circuit breaker 10 and the operation mechanism 50 are connected by a connection mechanism 6.

圧力容器４０は、長尺の有底円筒状を成し２組の支持脚４６により、設置面から高さｈ上昇した位置に軸線を水平にして設置されている。また、圧力容器４０は、遮断器１０から第一断路器２１及び第二断路器２２に延びる高圧中心導体（内部導体）１１が水平となるようにして設置されている。さらにまた、圧力容器４０は、後述する遮断器１０の可動主接点の動作方向が水平となるようにして設置されている。   The pressure vessel 40 has a long bottomed cylindrical shape, and is installed with a pair of support legs 46 so that the axis is horizontal at a position where the height h is raised from the installation surface. Further, the pressure vessel 40 is installed such that the high-voltage center conductor (inner conductor) 11 extending from the circuit breaker 10 to the first disconnector 21 and the second disconnector 22 is horizontal. Furthermore, the pressure vessel 40 is installed such that the operation direction of a movable main contact of the circuit breaker 10 to be described later is horizontal.

断路器２１，２２に接続された母線（高圧導体とこの高圧導体を収容する容器とから構成されている）３１，３２は、圧力容器４０の両端部の断路器２１，２２からそれぞれ鉛直上方に延び、所定の高さ（母線３２の方が母線３１より高い）に達した後、圧力容器４０側に直角に折れ曲がり、その後、水平に延びている。つまり、母線３１，３２は、圧力容器４０から所定距離上方を圧力容器４０に平行（水平）となるように延設されている。操作機構５０を収納する操作機構箱５１は、母線３１，３２と概略同じ高さに配置されている。   Busbars 31 and 32 (consisting of a high-voltage conductor and a container that accommodates the high-voltage conductor) 31 and 32 connected to the disconnectors 21 and 22 extend vertically upward from the disconnectors 21 and 22 at both ends of the pressure vessel 40, respectively. After extending and reaching a predetermined height (the bus bar 32 is higher than the bus bar 31), it bends at right angles to the pressure vessel 40 side, and then extends horizontally. That is, the bus bars 31 and 32 extend so as to be parallel (horizontal) to the pressure vessel 40 above a predetermined distance from the pressure vessel 40. An operation mechanism box 51 that houses the operation mechanism 50 is disposed at substantially the same height as the bus bars 31 and 32.

さらに詳細には、第一断路器２１から延びる第一母線３１は、圧力容器４０の一端部から鉛直上方に延び、第一の高さに達した後、一旦側方（図１の手前側）に直角に折れ曲がり、さらに圧力容器４０側に直角に折れ曲がり、その後、水平に延びている。一方、第二断路器２２から延びる第二母線３２は、圧力容器４０の他端部から鉛直上方に延び、第一の高さより高い第二の高さに達した後、圧力容器４０側に直角に折れ曲がり、その後、水平に延びている。そして、図３及び図４に示されるように、複数の開閉機器１００が併設されており、各圧力容器４０から延びた第一母線３１及び第二母線３２は、それぞれ第一の高さと第二の高さにて平行を保ちながら延設されている。そして、操作機構箱５１は、第一の高さに設けられ、自機器から延びる第一母線３１と隣接する機器から延びる第一母線３１に挟まれる様に配設されている。このような配置とすることにより、設置スペースをコンパクトにしている。   More specifically, the first bus bar 31 extending from the first disconnector 21 extends vertically upward from one end of the pressure vessel 40, and once reaches the first height, it is temporarily lateral (front side in FIG. 1). , Bent at a right angle to the pressure vessel 40, bent at a right angle toward the pressure vessel 40, and then extended horizontally. On the other hand, the second bus bar 32 extending from the second disconnector 22 extends vertically upward from the other end of the pressure vessel 40, reaches a second height higher than the first height, and then is perpendicular to the pressure vessel 40 side. It then bends and then extends horizontally. As shown in FIGS. 3 and 4, a plurality of opening / closing devices 100 are provided, and the first bus 31 and the second bus 32 extending from each pressure vessel 40 have a first height and a second height, respectively. It is extended while keeping parallel at the height of. The operation mechanism box 51 is provided at a first height and is disposed so as to be sandwiched between the first bus 31 extending from the own device and the first bus 31 extending from the adjacent device. With this arrangement, the installation space is made compact.

図２において、遮断器１０は、可動主接点（可動接触子）１ａ及び固定主接点（固定接触子）１ｂからなる主接点部１、および可動主接点１ａ及び固定主接点１ｂそれぞれ両端部に保持する極間絶縁支持筒２等を装備している。主接点部１においては、圧力容器４０の中心軸上を移動可能とする可動主接点１ａと固定主接点１ｂとが近接し且つ対向し、両者が接離可能なように構成されている。   In FIG. 2, the circuit breaker 10 is held at both ends of the main contact portion 1 composed of a movable main contact (movable contact) 1a and a fixed main contact (fixed contact) 1b, and the movable main contact 1a and the fixed main contact 1b. Equipped with an inter-electrode insulating support cylinder 2 and the like. The main contact portion 1 is configured such that the movable main contact 1a that can move on the central axis of the pressure vessel 40 and the fixed main contact 1b are close to each other and face each other, and both can be contacted and separated.

可動主接点１ａは、少なくとも一部が絶縁部材で作製された絶縁ロッド４やリンク機構５からなる連結機構６に接続され、圧力容器４０の上方に配設された操作機構５０により動作する。操作機構５０は、蓄勢エネルギ媒体で駆動し、電力系統の事故時などには主接点部１を開離して電流を遮断する。遮断器１０は、フレーム１３に支持されている。   The movable main contact 1a is connected to a coupling mechanism 6 including at least a part of an insulating rod 4 made of an insulating member and a link mechanism 5, and is operated by an operation mechanism 50 disposed above the pressure vessel 40. The operating mechanism 50 is driven by a stored energy medium, and in the event of a power system accident or the like, the main contact portion 1 is opened to cut off the current. The circuit breaker 10 is supported by the frame 13.

フレ−ム１３は、圧力容器４０の中央上部より所定距離上昇した位置に絶縁支持筒１５により絶縁支持されている。連結機構６は可動主接点１ａと接続してフレ−ム１３内に設けられ、絶縁支持筒１５の内部を通って操作機構５０と連結されている。操作機構５０に加えられた操作駆動力は、連結機構６を介して可動主接点１ａに伝達される。可動主接点１ａに伝達された操作駆動力は、可動主接点１ａを軸線方向に進退操作（進退動作）させて固定主接点１ｂに接離させる。   The frame 13 is insulated and supported by the insulating support cylinder 15 at a position elevated by a predetermined distance from the upper center of the pressure vessel 40. The connecting mechanism 6 is connected to the movable main contact 1 a and is provided in the frame 13, and is connected to the operating mechanism 50 through the inside of the insulating support cylinder 15. The operation driving force applied to the operation mechanism 50 is transmitted to the movable main contact 1a through the coupling mechanism 6. The operation driving force transmitted to the movable main contact 1a causes the movable main contact 1a to move back and forth in the axial direction (advancement / retraction operation) to be brought into and out of contact with the fixed main contact 1b.

図１に戻り、圧力容器４０は、遮断器１０を収納する第一圧力容器４１と、断路器２１，２２を収納する２つの第二圧力容器４２で構成されている。第一圧力容器４１と第二圧力容器４２の接合端部には、それぞれフランジ部４１ａ、４２ａが形成されている。   Returning to FIG. 1, the pressure vessel 40 includes a first pressure vessel 41 that houses the circuit breaker 10 and two second pressure vessels 42 that house the disconnectors 21 and 22. Flange portions 41 a and 42 a are formed at the joining end portions of the first pressure vessel 41 and the second pressure vessel 42, respectively.

このフランジ部４１ａ、４２ａの間に円環板状の仕切部材４３が介装されている。この仕切部材４３の中央穴部には、高圧中心導体（内部導体）１１を絶縁支持する絶縁スペーサ４４が設けられている。仕切部材４３は図示しないボルトおよびナット等の固定手段によって第一及び第二圧力容器４１、４２相互と一体的に固定され、圧力容器内部を３つのガス区分Ａ、Ｂ、Ｃに区画している。３つのガス区分Ａ、Ｂ、Ｃには、それぞれ例えばＳＦ６ガスなどの絶縁性ガスが封入されている。ガス区分Ａには、変流器２５などの機器も収納されている。   An annular plate-like partition member 43 is interposed between the flange portions 41a and 42a. An insulating spacer 44 that insulates and supports the high-voltage center conductor (inner conductor) 11 is provided in the central hole portion of the partition member 43. The partition member 43 is fixed integrally with the first and second pressure vessels 41 and 42 by fixing means such as bolts and nuts (not shown), and divides the inside of the pressure vessel into three gas sections A, B, and C. . Each of the three gas sections A, B, and C is filled with an insulating gas such as SF6 gas. In the gas section A, devices such as the current transformer 25 are also stored.

操作機構箱５１内には、液圧式操作機構５０およびこの液圧式操作機構５０の補器類（図示せず）が収納されている。電力系統の事故時等における動作指令を受けて、液圧式操作機構５０が動作して、主接点部１を開離することにより事故電流を遮断する。液圧式操作機構５０およびその補器類を収納する操作機構箱５１は、上記のように圧力容器４０の上側に配置構成されている。   In the operation mechanism box 51, a hydraulic operation mechanism 50 and auxiliary devices (not shown) of the hydraulic operation mechanism 50 are accommodated. In response to an operation command in the event of an electric power system accident or the like, the hydraulic operation mechanism 50 operates and the main contact portion 1 is opened to interrupt the accident current. The operation mechanism box 51 that houses the hydraulic operation mechanism 50 and its auxiliary devices is arranged and configured on the upper side of the pressure vessel 40 as described above.

本実施の形態の開閉機器１００においては、水平方向に長尺の圧力容器４０の鉛直上方に操作機構５０が設けられているので機器の配置がコンパクトに構成され、広い設置スペースを必要とすることがない。そして、設置面からの機器の高さ（圧力容器の高さ）ｈを従来のものより低くすることができ、これにより、輸送及び保守点検を容易とするとともに周囲に配置される他機器の配置自由度を大きくする。   In the opening / closing device 100 of the present embodiment, since the operation mechanism 50 is provided vertically above the pressure vessel 40 that is long in the horizontal direction, the arrangement of the devices is compact and requires a large installation space. There is no. And the height (pressure vessel height) h of the device from the installation surface can be made lower than the conventional one, thereby facilitating transportation and maintenance, and arranging other devices arranged around the device. Increase the degree of freedom.

実施の形態２．
実施の形態２は、抵抗体を接続された抵抗接点部を主接点部に並列に接続して、再投入時のサージを低減するものである。図５は本発明に係る開閉機器の実施の形態２の構造を示す横断面図である。図６は図５の開閉機器の遮断器近傍を拡大して断面とした要部拡大断面図である。図５および図６において、本実施の形態の開閉機器１００Ａにおいては、遮断器１０Ａが、実施の形態１の遮断器１０の構成に加えて、抵抗接点部３を有している。抵抗接点部３は、主接点部１に対して並列に接続されている。抵抗接点部３には、抵抗体９が直列に接続されている。 Embodiment 2. FIG.
In the second embodiment, a resistance contact portion to which a resistor is connected is connected in parallel to a main contact portion to reduce a surge at the time of recharging. FIG. 5 is a cross-sectional view showing the structure of Embodiment 2 of the switchgear according to the present invention. FIG. 6 is an enlarged cross-sectional view of a main part in which the vicinity of the circuit breaker of the switchgear of FIG. 5 and 6, in the switchgear 100A of the present embodiment, the circuit breaker 10A has a resistance contact portion 3 in addition to the configuration of the circuit breaker 10 of the first embodiment. The resistive contact portion 3 is connected in parallel to the main contact portion 1. A resistor 9 is connected to the resistance contact portion 3 in series.

図６において、遮断器１０Ａは、可動主接点１ａ及び固定主接点１ｂからなる主接点部１、可動主接点１ａ及び固定主接点１ｂそれぞれ両端部に保持する極間絶縁支持筒２、可動抵抗接点３ａ及び固定抵抗接点３ｂからなり主接点部１の上方に設けられる抵抗接点部３等を装備している。主接点部１においては、圧力容器４０の中心軸上を移動可能とする可動主接点１ａと固定主接点１ｂとが近接し且つ対向し、両者が接離可能なように構成されている。また、抵抗接点部３においては、圧力容器４０の平行軸線上を移動可能とする可動抵抗接点３ａと固定抵抗接点３ｂとが近接し且つ対向し、両者が接離可能なように構成されている。   In FIG. 6, the circuit breaker 10 </ b> A includes a main contact portion 1 composed of a movable main contact 1 a and a fixed main contact 1 b, an interpolar insulating support cylinder 2 held at both ends, and a movable resistance contact, respectively. 3a and a fixed resistance contact 3b, and a resistance contact 3 provided above the main contact 1 is provided. The main contact portion 1 is configured such that the movable main contact 1a that can move on the central axis of the pressure vessel 40 and the fixed main contact 1b are close to each other and face each other, and both can be contacted and separated. Further, the resistance contact portion 3 is configured such that the movable resistance contact 3a and the fixed resistance contact 3b that can move on the parallel axis of the pressure vessel 40 are close to each other and face each other, and both can be contacted and separated. .

主接点部１及び抵抗接点部３は、高圧中心導体１１の閉路時は、抵抗接点部３を主接点部１の閉路に先行して閉路するとともに、高圧中心導体１１の開路時は抵抗接点部３を主接点部１の開路に先行して開路するように操作される。   The main contact portion 1 and the resistance contact portion 3 close the resistance contact portion 3 prior to the closing of the main contact portion 1 when the high voltage center conductor 11 is closed, and the resistance contact portion when the high voltage center conductor 11 is opened. 3 is operated prior to the opening of the main contact portion 1.

可動主接点１ａ及び可動抵抗接点３ａは、絶縁ロッド４やリンク機構５からなる連結機構６に接続され、圧力容器４０の上方に配設された操作機構５０により動作する。操作機構５０は、蓄勢エネルギ媒体で駆動し、電力系統の事故時などには主接点部１を開離して電流を遮断する。   The movable main contact 1 a and the movable resistance contact 3 a are connected to a coupling mechanism 6 including an insulating rod 4 and a link mechanism 5, and are operated by an operation mechanism 50 disposed above the pressure vessel 40. The operating mechanism 50 is driven by a stored energy medium, and in the event of a power system accident or the like, the main contact portion 1 is opened to cut off the current.

連結機構６は、可動主接点１ａと可動抵抗接点３ａとに接続されてフレーム１３内に設けられ、絶縁支持筒１５の内部を介して操作機構５０と連結している。操作機構５０に加えられた操作駆動力は、連結機構６を介して可動主接点１ａ及び可動抵抗接点３ａに伝達される。可動主接点１ａ及び可動抵抗接点３ａに伝達された操作駆動力は、可動主接点１ａ及び可動抵抗接点３ａを軸線方向に進退操作（進退動作）させて固定主接点１ｂ及び固定抵抗接点３ｂに接離させる。   The connection mechanism 6 is connected to the movable main contact 1 a and the movable resistance contact 3 a and is provided in the frame 13, and is connected to the operation mechanism 50 through the inside of the insulating support cylinder 15. The operation driving force applied to the operation mechanism 50 is transmitted to the movable main contact 1a and the movable resistance contact 3a via the coupling mechanism 6. The operation driving force transmitted to the movable main contact 1a and the movable resistance contact 3a causes the movable main contact 1a and the movable resistance contact 3a to move forward and backward in the axial direction (advance and retreat operation) to contact the fixed main contact 1b and the fixed resistance contact 3b. Let go.

本実施の形態の開閉機器１００Ａにおいては、投入時は、主接点部１の投入に先立って抵抗接点部３を投入することにより過電圧を抑制し、約１０ｍｓ後に主接点部１を投入する。また、遮断時は、抵抗接点部３の遮断に先立って主接点部１の遮断を完了し、それから約数１０ｍｓ遅れて抵抗接点部３の遮断を行うことにより遮断サージを低減することができる。   In the switchgear 100A of the present embodiment, at the time of turning on, the overvoltage is suppressed by turning on the resistance contact portion 3 prior to turning on the main contact portion 1, and the main contact portion 1 is turned on after about 10 ms. Moreover, at the time of interruption | blocking, interruption | blocking of the main contact part 1 is completed prior to interruption | blocking of the resistance contact part 3, and interruption | blocking surge can be reduced by performing interruption | blocking of the resistance contact part 3 about 10 ms later.

以上のように、本発明にかかる開閉機器は、発電・変電などの電力系統で使用される開閉機器に有用であり、特に、設置面からの機器の高さを低くして周囲に配置される他機器の配置自由度の拡大を要求される開閉機器に適している。   As described above, the switchgear according to the present invention is useful for switchgears used in power systems such as power generation and substation, and is particularly arranged around the apparatus with a low height from the installation surface. It is suitable for switchgear that requires expansion of the degree of freedom of arrangement of other equipment.

本発明に係る開閉機器の実施の形態１の構造を示す横断面図である。It is a cross-sectional view which shows the structure of Embodiment 1 of the switchgear concerning this invention. 図１の開閉機器の遮断器近傍を拡大して断面とした要部拡大断面図である。It is a principal part expanded sectional view which expanded and showed the cross-section vicinity of the circuit breaker of the switchgear of FIG. 図１の開閉機器の側面図である。It is a side view of the switchgear of FIG. 図１の開閉機器の平面図である。It is a top view of the switchgear of FIG. 本発明に係る開閉機器の実施の形態２の構造を示す横断面図である。It is a cross-sectional view which shows the structure of Embodiment 2 of the switchgear concerning this invention. 図５の開閉機器の遮断器近傍を拡大して断面とした要部拡大断面図である。It is the principal part expanded sectional view which expanded the cross-section vicinity of the circuit breaker of FIG.

符号の説明Explanation of symbols

１ 主接点部
１ａ 可動主接点（可動接触子）
１ｂ 固定主接点（固定接触子）
２ 極間絶縁支持筒
３ 抵抗接点部
３ａ 可動抵抗接点
３ｂ 固定抵抗接点
４ 絶縁ロッド
５ リンク機構
６ 連結機構
９ 抵抗体
１０，１０Ａ 遮断器
１１ 高圧中心導体（内部導体）
１３ フレーム
１５ 絶縁支持筒
２１ 第一断路器
２２ 第二断路器
２５ 変流器
３１ 第一母線
３２ 第二母線
３２ 母線
４０ 圧力容器
４１ 第一圧力容器
４２ 第二圧力容器
４１ａ，４２ａ フランジ部
４３ 仕切部材
４４ 絶縁スペーサ
４６ 支持脚
５０ 液圧式操作機構
５１ 操作機構箱
１００，１００Ａ 開閉機器 1 Main contact 1a Movable main contact (movable contact)
1b Fixed main contact (fixed contact)
2 Insulating support cylinder between electrodes 3 Resistance contact part 3a Movable resistance contact 3b Fixed resistance contact 4 Insulating rod 5 Link mechanism 6 Connection mechanism 9 Resistor 10, 10A Breaker 11 High voltage center conductor (internal conductor)
13 Frame 15 Insulating support cylinder 21 First disconnector 22 Second disconnector 25 Current transformer 31 First bus 32 Second bus 32 Bus 40 Pressure vessel 41 First pressure vessel 42 Second pressure vessel 41a, 42a Flange portion 43 Partition Member 44 Insulating spacer 46 Support leg 50 Hydraulic operation mechanism 51 Operation mechanism box 100, 100A Opening / closing device

Claims (7)

固定接触子及び該固定接触子に接離する可動接触子を有する主接点部と、
前記可動接触子の移動方向に長尺とされ、内部に前記主接点部を絶縁した状態で収納するとともに絶縁ガスが充填され、長手方向を水平にして設置される圧力容器と、
前記圧力容器の上方に設けられ、絶縁材料でなる連結機構を介して前記可動接触子と連結された操作機構と
を備えたことを特徴とする開閉機器。 A main contact portion having a stationary contact and a movable contact contacting and separating from the stationary contact;
A pressure vessel that is elongated in the moving direction of the movable contact, is housed in an insulated state inside the main contact portion, is filled with an insulating gas, and is installed with the longitudinal direction horizontal;
An opening / closing device comprising: an operating mechanism provided above the pressure vessel and connected to the movable contact through a connecting mechanism made of an insulating material. 固定抵抗接点及び該固定抵抗接点に接離する可動抵抗接点を有し、前記主接点部と並列に接続されるとともに抵抗体が直列に接続された抵抗接点部をさらに備えた
ことを特徴とする請求項１に記載の開閉機器。 It has a fixed resistance contact and a movable resistance contact that contacts and separates from the fixed resistance contact, and further includes a resistance contact portion connected in parallel with the main contact portion and having a resistor connected in series. The switchgear according to claim 1. 前記操作機構は、蓄勢エネルギ媒体で駆動する
ことを特徴とする請求項１または２に記載の開閉機器。 The switchgear according to claim 1 or 2, wherein the operation mechanism is driven by a stored energy medium. 前記操作機構は、前記圧力容器の上部に設けられた操作機構箱に収納され、
前記操作機構箱は、前記操作機構の補器類も収納する
ことを特徴とする請求項１から３のいずれか１項に記載の開閉機器。 The operating mechanism is housed in an operating mechanism box provided at the top of the pressure vessel,
The switchgear according to any one of claims 1 to 3, wherein the operation mechanism box also accommodates auxiliary devices of the operation mechanism. 前記圧力容器に接続され前記圧力容器の上方で水平方向に延びる母線と前記操作機構とが概略同じ高さに配置され、前記操作機構は、隣接する他の開閉機器から延びる母線との間に挟まれて配設されている
ことを特徴とする請求項１から４のいずれか１項に記載の開閉機器。 The bus bar connected to the pressure vessel and extending in the horizontal direction above the pressure vessel and the operation mechanism are arranged at substantially the same height, and the operation mechanism is sandwiched between the bus bar extending from other adjacent opening / closing devices. The switchgear according to any one of claims 1 to 4, wherein the switchgear is arranged. 固定接触子及び該固定接触子に接離する可動接触子を持つ主接点部を有する遮断器と、 前記遮断器に接続された断路器と、
前記可動接触子の移動方向に長尺とされ、内部に前記遮断器及び断路器を絶縁した状態で収納するとともに絶縁ガスが充填され、長手方向を水平にして設置される圧力容器と、 前記圧力容器の上方に設けられ、絶縁材料でなる連結機構を介して前記可動接触子と連結された操作機構と
を備えたことを特徴とする開閉機器。 A circuit breaker having a main contact portion having a stationary contact and a movable contact contacting and separating from the stationary contact; a disconnector connected to the circuit breaker;
A pressure vessel that is elongated in the moving direction of the movable contact, is housed in an insulated state in the circuit breaker and disconnector, is filled with an insulating gas, and is installed with the longitudinal direction horizontal; and the pressure An opening / closing device comprising: an operating mechanism provided above the container and connected to the movable contact via a connecting mechanism made of an insulating material. 前記遮断器と前記断路器との間に延びる高圧導体が水平方向に延びている
ことを特徴とする請求項６に記載の開閉機器。 The switchgear according to claim 6, wherein a high-voltage conductor extending between the breaker and the disconnector extends in a horizontal direction.
JP2007112165A 2007-04-20 2007-04-20 Switchgear Expired - Fee Related JP4953898B2 (en)

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HK09102033.6A HK1124438A1 (en) 2007-04-20 2009-03-03 Switching device

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