JP2004120974A - Gas insulated switching device - Google Patents

Gas insulated switching device Download PDF

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Publication number
JP2004120974A
JP2004120974A JP2002284855A JP2002284855A JP2004120974A JP 2004120974 A JP2004120974 A JP 2004120974A JP 2002284855 A JP2002284855 A JP 2002284855A JP 2002284855 A JP2002284855 A JP 2002284855A JP 2004120974 A JP2004120974 A JP 2004120974A
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JP
Japan
Prior art keywords
movable contact
switch
container
conductor
gas
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Pending
Application number
JP2002284855A
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Japanese (ja)
Inventor
Kaneharu Fujiwara
藤原　金春
Yasuhiko Kusunoki
楠　恭彦
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Toshiba Corp
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Toshiba Corp
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Priority to JP2002284855A priority Critical patent/JP2004120974A/en
Publication of JP2004120974A publication Critical patent/JP2004120974A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • H01H31/003—Earthing switches

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  • Gas-Insulated Switchgears (AREA)
  • Installation Of Bus-Bars (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gas insulated switching device which improves the layout of a fixed contact part of a ground switching unit, which effectively uses a dead space in a container and which improves the quality of a measuring function of a main circuit resistance, an insulation resistance, etc. <P>SOLUTION: The gas insulated switching device includes the fixed contact part 4 having a conductor 3b led in a direction perpendicular to a bus conductor 3 disposed in the container 2 for sealing an insulating gas, a movable contact part 5 provided at an opposed position, a movable contactor 9 separably provided at the contact part 4, a movable contactor 13 provided for a ground switch 16 at one end, a fixed contact part 15 provided for the ground switch 16 at a position opposed to the contactor 13, and a three-position disconnecting switch cooperating integrally with the contactor 13 of a disconnecting unit 1 and the switch 16. In this device, the contact part 15 for the switch 16 is drawn out of the container 2 via a connecting conductor 18 insulator-supported by an insulating terminal 17 provided out of the container 2. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は発電所、変電所などの電気所において使用されるガス絶縁開閉器に関するもので、特に断路器、接地開閉器の絶縁端子の配置構成を改良したガス絶縁開閉器に関する。
【０００２】
【従来の技術】
大都市周辺あるいは臨海地区に建設される変電所、開閉所においては、用地の入手難や塩害対策上の理由から、変電所や開閉所を構成する開閉装置として小型化と絶縁信頼性の向上を図ったガス絶縁開閉装置が用いられている。
ガス絶縁開閉装置は、金属製の接地容器内に機器本体と共にＳＦ６ガスなどの不活性絶縁ガスを加圧封入し絶縁を図っている。
【０００３】
ガス絶縁開閉装置を構成する機器としては、ガス絶縁母線、ガス絶縁遮断器、ガス絶縁断路器などの各種の構成機器があり、これらの構成機器を所定の母線結線方式に従い、絶縁スペーサを介して接続、組立てることによりガス絶縁開閉装置を構成している。
【０００４】
この種のガス絶縁開閉装置は、遮断器、断路器などの構成機器が立体的に配置されるため、各機器相互間の間隔を狭め、据付面積や据付容積の大幅な縮小を図ることができ、気中絶縁方式の開閉装置に比べて著しく小型に構成することができる。
【０００５】
また、近年、自然と住宅との環境調和を考え、これらのガス絶縁開閉装置をビル建屋内、または大都市における地下空間へ建設する傾向が増加している。そこで、構成機器を合理的に配置し、据付面積あるいは据付容積をより縮小することにより、ガス絶縁開閉装置を含めた建設費用をいかに低減するかが大きな課題となっている。
【０００６】
このようなガス絶縁開閉装置における従来のガス絶縁断路器の構成例を図６に示す。図６において、母線一体形のガス絶縁断路器１は、ＳＦ６ガスなどの絶縁ガスＧを封入した容器２内に母線導体３を容器２の中心軸２ａから偏芯させた導体軸３ａを中心として絶縁スペーサ２１ａ、２１ｂを介して配置している。前記母線導体３からほぼ直角に導出する導体３ｂに母線導体３とほぼ平行に断路器の固定接触部４を設け、前記固定接触部４と対向して筒状の可動接触部５が設けられ、断路部１ａを構成している。
【０００７】
母線導体３の長手方向に対して直角方向に、断路部１ａの可動接触部５より導出した可動接触部導体６が容器２の内部に設けられ、容器２のフランジ７に絶縁スペーサ８を介して絶縁支持されている。この可動接触部導体６は図示しない他のガス絶縁電機機器に接続される。前記断路部１ａの固定接触部４と可動接触部５との間には両接触部間を開閉する可動接触子９が設けられ、可動接触部５内に摺動自在に挿入されている。
【０００８】
この可動接触子９にはラック１０が形成され、容器２外部には、図示しない操作装置が配置され、この操作装置に連結された絶縁ロッド１１にはピニオン１２が形成され、このピニオン１２を前記ラック１０に噛み合わせることで可動接触子９を駆動して開閉動作を行う。
また断路部１ａの可動接触子９は一方端を固定接触部４に対する接触子とし、他方端には接地開閉器用の可動接触子１３が一体に設けられている。
【０００９】
可動接触子１３を内蔵する可動接触部５と対向した側の容器２のフランジ１４側には可動接触子１３と接触する固定接触部１５が絶縁スペーサ２１ｂに設けられ、接地電位をとる接地開閉器１６を構成し、可動接触部５と固定接触部１５との間を可動接触子９と可動接触子１３とが一体となって摺動自在に開閉するいわゆる三位置断路器を構成する。
【００１０】
【発明が解決しようとする課題】
しかしながら、上記のような構成を有する従来のガス絶縁開閉器においては、接地開閉器１６は断路部１ａの開極時、可動接触子１３と固定接触部１５とが接触し、可動接触部５の充電電荷の放電機能や短時間電流の通電能力はあるが、接地開閉器１６としては主回路抵抗、絶縁抵抗等の測定機能が必要となった場合の対応ができないと言う問題点がある。
【００１１】
本発明は、上記のような欠点を除去し、接地開閉器の固定接触部の配置構成を改良し、容器内のデットスペースを有効に利用して、主回路抵抗、絶縁抵抗等の測定機能を持った、品質の向上されたガス絶縁開閉器を提供することを目的とする。
【００１２】
【課題を解決するための手段】
上記目的を達成するために、請求項１に記載の発明は、絶縁ガスを封入した容器内に配置した母線導体と直交する方向に導体を導出し、この導体に断路部の固定接触部を設け、対向した位置に可動接触部を設け、前記断路部の固定接触部に対して、接離自在に可動接触子を設け、この可動接触子を駆動する操作装置が配置され、前記断路部の可動接触子の一方端に接地開閉器用の可動接触子を設け、これに対向した位置に接地開閉器用の固定接触部を設け、断路部と接地開閉器の可動接触子が一体となって連動する三位置断路器を構成するガス絶縁開閉器において、接地開閉器用の固定接触部を容器外に設けた絶縁端子にて絶縁支持された接続導体で容器外に引き出したことを特徴とする。
【００１３】
この発明によれば、接地開閉器用の固定接触部を容器外に設けた絶縁端子にて直接ガス気密に絶縁支持するように構成したことにより、主回路抵抗、絶縁抵抗などの測定機能を有する。
【００１４】
請求項２に記載の発明は、請求項１に記載のガス絶縁開閉器において接地開閉器の可動接触子の中心軸より偏芯させて絶縁端子を設けたことを特徴とする。
この発明によれば、容器内のスペースを有効に利用して母線導体等の接続スペースが容易に確保できる。
【００１５】
請求項３に記載の発明は、請求項１に記載のガス絶縁開閉器において、接地開閉器の固定接触部の接続導体を容器内のデッドスペースに導出したことを特徴とする。
この発明によれば、容器内のデッドスペース部に接地開閉器の固定接触部の導体が構成されデッドスペースが有効に利用できる。
【００１６】
請求項４に記載の発明は、請求項１に記載のガス絶縁開閉器において、接続導体を接地開閉器の可動接触子の中心軸に対して直角方向に導出して設けたことを特徴とする。
この発明によれば、容器内のデッドスペース部に接地開閉器の固定接触部の導体が構成されデッドスペースが有効に利用できる。
【００１７】
請求項５に記載の発明は、絶縁ガスを封入した容器内に配置した母線導体と直交する方向に導体を導出し、この導体に断路部の固定接触部を設け、対向した位置に可動接触部を設け、前記断路部の固定接触部に対して、接離自在に可動接触子を設け、この可動接触子を駆動する操作装置が配置され、前記断路部の可動接触子の一方端に接地開閉器用の可動接触子を設け、これに対向した位置に接地開閉器用の固定接触部を設け、断路部と接地開閉器の可動接触子が一体となって連動する三位置断路器を構成するガス絶縁開閉器において、接地開閉器用の固定接触部を容器外に設けた絶縁端子にて絶縁支持された接続導体で容器外に引き出し、この接続導体と容器とを接続するシャントを接地開閉器の可動接触子と偏芯して設けたことを特徴とする。
この発明によれば、主回路抵抗、絶縁抵抗などの測定機能を有すると共に短時間電流の通電により発生する電磁力が可動接触子に働かないように作用する。
【００１８】
【発明の実施の形態】
以下本発明によるガス絶縁開閉器の実施の形態を図を参照して説明する。図１は本発明の第１の実施の形態によるガス絶縁開閉器を示す断面図で、図６に示す従来のガス絶縁断路器と同一部分には同一の符号を付す。
【００１９】
図１に示すように、本発明によるガス絶縁開閉器である母線一体形三位置断路器１は、ＳＦ６ガスなどの絶縁ガスＧを封入した容器２内に母線導体３を容器２の中心軸２ａから偏芯させた導体軸３ａを中心として絶縁スペーサ２１ａ、２１ｂを介して配置している。前記母線導体３からほぼ直角に導出する導体３ｂに母線導体３とほぼ平行に断路器の固定接触部４を設け、前記固定接触部４と対向して筒状の可動接触部５が設けられ、断路部１ａを構成している。
【００２０】
母線導体３の長手方向に対して直角方向に断路部１ａの可動接触部５より導出した可動接触部導体６が容器２の内部に設けられ、容器２のフランジ７に絶縁スペーサ８を介して絶縁支持されている。この可動接触部導体６は図示しない他のガス絶縁電機機器に接続される。前記断路部１ａの固定接触部４と可動接触部５との間には両接触部間を開閉する可動接触子９が設けられ、可動接触部５内に摺動自在に挿入されている。
【００２１】
この可動接触子９にはラック１０が形成され、容器２外部には、図示しない操作装置が配置され、この操作装置に連結された絶縁ロッド１１にはピニオン１２が形成され、このピニオン１２を前記ラック１０に噛み合わせることで可動接触子９を駆動して開閉動作を行う。
また断路部１ａの可動接触子９は一方端を固定接触部４に対する接触子とし、他方端には接地開閉器用の可動接触子１３が一体に設けられている。
【００２２】
可動接触子１３を内蔵する可動接触部５と対向した容器２のフランジ１４側に可動接触子１３と接触する固定接触部１５が設けられ、接地電位をとる接地開閉器１６を構成し、前記固定接触部１５は容器２外に設けた絶縁端子１７に一体的に固着される接続導体１８に接続し、絶縁スペーサ２１ｂに絶縁端子１７にてガス気密に支持され、容器２外に引き出されている。
【００２３】
接地開閉器１６の可動接触子１３と固定接触部１５の接触部間は可動接触子９と可動接触子１３が一体となって摺動自在に開閉して三位置断路器を構成し、可動接触子１３を固定接触部１５に投入することにより可動接触部５の電位は絶縁端子１７を介して容器２より絶縁されて容器２の外部に導出され接地電位にとられる。この導出された接続導体１８を介して主回路抵抗、絶縁抵抗の測定が可能となる。
【００２４】
この発明の実施の形態によれば、接地開閉器用の固定接触部１５を容器２外に設けた絶縁端子１７にて容器２に直接ガス気密に絶縁支持し、容器２外に引き出すように構成したことにより、主回路抵抗、絶縁抵抗の測定が可能となり、かつ最少部品で構成でき、絶縁端子部が小さくなり、スペースの有効利用ができる。
【００２５】
また図２に示すように、絶縁端子１７を接地開閉器１６の可動接触子１３の中心軸１３ａより偏芯させて配置するようにしてもよい。
このようにすると、母線導体３に別の導体１９を接続するような場合、接続スペースが十分に確保できる。
【００２６】
また、図３のように固定接触部１５と接続する接続導体１８を接地開閉器１６の可動接触子１３の中心軸１３ａに対して直角方向に引き出すように容器２内のデッドスペース２ｄ部に導出して絶縁端子１７に一体的に固着させ、絶縁端子１７を容器２に絶縁気密支持するようにしてもよい。
【００２７】
このようにすると、容器２内のデッドスペース２ｄ部に接地開閉器１６の固定接触部１５の導体と接続する接続導体１８が配置されデッドスペース２ｄの有効利用が図れる。
【００２８】
次に本発明の第２の実施の形態について図４を参照して説明する。図４に示すように、前記絶縁端子１７を接地開閉器１６の可動接触子１３の中心軸１３ａより偏芯させ、絶縁スペーサ２１ｂに絶縁気密に接続配置し、可動接触子１３から固定接触部１５を介して接続導体１８に接続される電位を容器２に接地電位として接続させるシャント２０を設け、このシャント２０を接続導体１８と容器２間に可動接触子１３と偏芯させて接続する。
【００２９】
以上のようにこの発明の実施の形態によれば、可動接触子１３の電位を容器２に接地電位として接続させるシャント２０を可動接触子１３と偏芯させて容器２に接続することにより主回路抵抗、絶縁抵抗の測定が可能になると共に接続導体１８とシャント２０とが並列配置にならないため、例えば図５に示すようにシャント２０を容器２に可動接触子１３と同軸上に接続した場合は、接続導体１８とシャント２０とが並列配置になり接続導体１８とシャント２０には短時間電流通電時の電磁力が作用することになるが、本発明の第２の実施の形態によれば短時間電流の通電により発生する電磁力が可動接触子に作用せず、品質の向上が図れる。
【００３０】
【発明の効果】
以上のような本発明によれば、絶縁ガスを封入した容器内に配置した母線導体と直交する方向に導体を導出し、この導体に断路部の固定接触部を設け、対向した位置に可動接触部を設け、前記断路部の固定接触部に対して、接離自在に可動接触子を設け、この可動接触子を駆動する操作装置が配置され、前記断路部の可動接触子の一方端に接地開閉器用の可動接触子を設け、これに対向した位置に接地開閉器用の固定接触部を設け、断路部と接地開閉器の可動接触子が一体となって連動する三位置断路器を構成するガス絶縁開閉器において、接地開閉器用の固定接触部を容器外に設けた絶縁端子にて絶縁支持された接続導体で容器外に引き出すようにしたので、接地開閉器の固定接触部の配置構成を改良し、容器内のデットスペースを有効に利用して、主回路抵抗、絶縁抵抗等の測定機能を持った、品質の向上されたガス絶縁開閉器を得ることができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態によるガス絶縁開閉器を示す断面図。
【図２】本発明の１の実施の形態によるガス絶縁開閉器の変形例を示す断面図。
【図３】本発明の１の実施の形態によるガス絶縁開閉器の変形例を示す断面図。
【図４】本発明の第２の実施の形態によるガス絶縁開閉器を示す断面図。
【図５】本発明の第２の実施の形態によるガス絶縁開閉器の作用を説明するための断面図。
【図６】従来のガス絶縁開閉器を示す断面図。
【符号の説明】
１…断路器、２…容器、３…母線導体、４…断路器の固定接触部、５…断路器の可動接触部、９…可動接触子、１３…接地開閉器の可動接触子、１５…接地開閉器の固定接触部、１６…接地開閉器、１７…絶縁端子、１８…接続導体、２０…シャント、２１ａ、２１ｂ…絶縁スペーサ。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a gas insulated switch used in an electric station such as a power plant and a substation, and more particularly to a gas insulated switch in which the arrangement of insulating terminals of a disconnector and a ground switch is improved.
[0002]
[Prior art]
For substations and switchyards constructed around large cities or near the seaside, miniaturization and improvement of insulation reliability as substation and switchgear switchgears are required due to difficulties in obtaining land and countermeasures against salt damage. The intended gas insulated switchgear is used.
In the gas insulated switchgear, an inert insulating gas such as SF6 gas is pressurized and sealed together with a device main body in a metal grounded container to achieve insulation.
[0003]
There are various types of components such as gas-insulated buses, gas-insulated circuit breakers, and gas-insulated disconnectors as devices that constitute the gas-insulated switchgear.These components are connected via insulating spacers according to a predetermined bus-connection method. By connecting and assembling, a gas insulated switchgear is configured.
[0004]
In this type of gas insulated switchgear, components such as circuit breakers and disconnectors are three-dimensionally arranged, so the spacing between each device can be reduced, and the installation area and installation volume can be significantly reduced. In addition, the size of the switch can be significantly reduced as compared with an air-insulated switchgear.
[0005]
Also, in recent years, in consideration of environmental harmony between nature and houses, there is an increasing tendency to construct these gas insulated switchgears in building buildings or in underground spaces in large cities. Therefore, it is a major issue how to reduce the construction cost including the gas insulated switchgear by arranging the components rationally and further reducing the installation area or the installation volume.
[0006]
FIG. 6 shows a configuration example of a conventional gas insulated disconnector in such a gas insulated switchgear. In FIG. 6, a bus-integrated gas-insulated disconnector 1 has a bus conductor 3 eccentric from a central axis 2a of a container 2 in a container 2 in which an insulating gas G such as SF6 gas is sealed. They are arranged via insulating spacers 21a and 21b. A fixed contact portion 4 of a disconnector is provided substantially parallel to the bus conductor 3 on a conductor 3b derived at a substantially right angle from the bus conductor 3, and a cylindrical movable contact portion 5 is provided facing the fixed contact portion 4; It constitutes the disconnecting portion 1a.
[0007]
A movable contact portion conductor 6 derived from the movable contact portion 5 of the disconnecting portion 1a is provided inside the container 2 in a direction perpendicular to the longitudinal direction of the bus conductor 3, and is provided on the flange 7 of the container 2 via an insulating spacer 8. Insulated and supported. The movable contact conductor 6 is connected to another gas insulated electric machine (not shown). A movable contact 9 that opens and closes between the two contact portions is provided between the fixed contact portion 4 and the movable contact portion 5 of the disconnecting portion 1a, and is slidably inserted into the movable contact portion 5.
[0008]
A rack 10 is formed on the movable contact 9, an operating device (not shown) is arranged outside the container 2, and a pinion 12 is formed on an insulating rod 11 connected to the operating device. The opening and closing operation is performed by driving the movable contact 9 by meshing with the rack 10.
One end of the movable contact 9 of the disconnecting portion 1a is a contact with the fixed contact portion 4, and the other end is integrally provided with a movable contact 13 for a grounding switch.
[0009]
A fixed contact portion 15 for contacting the movable contact 13 is provided on the insulating spacer 21b on the flange 14 side of the container 2 opposite to the movable contact portion 5 containing the movable contact 13, and a grounding switch for obtaining a ground potential. A movable contact 9 and a movable contact 13 are integrally formed between the movable contact portion 5 and the fixed contact portion 15 to form a so-called three-position disconnector which is slidably opened and closed.
[0010]
[Problems to be solved by the invention]
However, in the conventional gas insulated switch having the above-described configuration, the grounding switch 16 contacts the movable contact 13 and the fixed contact 15 when the disconnecting portion 1 a is opened, and the movable contact 5 Although it has the function of discharging charged electric charge and the ability to supply a short-time current, there is a problem that the earthing switch 16 cannot cope with a case where a function of measuring a main circuit resistance, an insulation resistance and the like is required.
[0011]
The present invention eliminates the above-mentioned drawbacks, improves the arrangement of the fixed contact portion of the earthing switch, effectively utilizes the dead space in the container, and measures the main circuit resistance, insulation resistance, etc. It is an object of the present invention to provide a gas-insulated switch having improved quality.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 derives a conductor in a direction orthogonal to a bus conductor arranged in a container filled with an insulating gas, and provides a fixed contact portion of a disconnecting portion to the conductor. A movable contact portion is provided at a position opposed to the movable contact portion, a movable contact is provided so as to be able to freely contact and separate from the fixed contact portion of the disconnecting portion, and an operating device for driving the movable contact is disposed; A movable contact for a grounding switch is provided at one end of the contact, and a fixed contact for the grounding switch is provided at a position facing the movable contact, so that the disconnecting portion and the movable contact of the grounding switch integrally work together. In the gas insulated switch constituting the position disconnector, the fixed contact portion for the grounding switch is drawn out of the container by a connection conductor insulated and supported by an insulating terminal provided outside the container.
[0013]
According to the present invention, since the fixed contact portion for the grounding switch is directly and gas-tightly insulated and supported by the insulating terminal provided outside the container, it has a function of measuring main circuit resistance, insulation resistance, and the like.
[0014]
According to a second aspect of the present invention, in the gas insulated switch of the first aspect, an insulating terminal is provided eccentrically from a center axis of a movable contact of the grounding switch.
ADVANTAGE OF THE INVENTION According to this invention, the connection space of a bus conductor etc. can be easily ensured by effectively utilizing the space in a container.
[0015]
According to a third aspect of the present invention, in the gas insulated switch according to the first aspect, the connection conductor of the fixed contact portion of the grounding switch is led to a dead space in the container.
According to the present invention, the conductor of the fixed contact portion of the grounding switch is formed in the dead space portion in the container, and the dead space can be effectively used.
[0016]
According to a fourth aspect of the present invention, in the gas insulated switch of the first aspect, the connection conductor is provided to extend in a direction perpendicular to the center axis of the movable contact of the grounding switch. .
According to the present invention, the conductor of the fixed contact portion of the grounding switch is formed in the dead space portion in the container, and the dead space can be effectively used.
[0017]
According to a fifth aspect of the present invention, a conductor is derived in a direction orthogonal to a bus conductor arranged in a container filled with an insulating gas, and a fixed contact portion of a disconnecting portion is provided on the conductor, and a movable contact portion is provided at a position opposed to the conductor. A movable contact is provided so as to be able to freely contact and separate from the fixed contact portion of the disconnecting portion, and an operating device for driving the movable contact is disposed, and one end of the movable contact of the disconnecting portion is grounded and opened and closed. Provide a movable contact for dexterity, provide a fixed contact for the grounding switch at a position facing the movable contactor, and form a three-position disconnector in which the disconnecting part and the movable contactor of the grounding switch work together as a single unit. In the switch, the fixed contact portion for the grounding switch is pulled out of the container by a connection conductor insulated and supported by an insulating terminal provided outside the container, and a shunt connecting the connection conductor and the container is moved by the movable contact of the grounding switch. It is characterized by being provided eccentrically with the child That.
According to the present invention, it has a function of measuring the main circuit resistance, the insulation resistance, and the like, and acts so that the electromagnetic force generated by the short-time current supply does not act on the movable contact.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of a gas insulated switch according to the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view showing a gas insulated switchgear according to a first embodiment of the present invention, and the same parts as those of the conventional gas insulated disconnector shown in FIG.
[0019]
As shown in FIG. 1, a bus-integrated three-position disconnector 1, which is a gas-insulated switch according to the present invention, includes a bus conductor 3 in a container 2 in which an insulating gas G such as SF6 gas is sealed, and a central axis 2a of the container 2. They are arranged via insulating spacers 21a and 21b around a conductor shaft 3a eccentric from the center. A fixed contact portion 4 of a disconnector is provided substantially parallel to the bus conductor 3 on a conductor 3b derived at a substantially right angle from the bus conductor 3, and a cylindrical movable contact portion 5 is provided facing the fixed contact portion 4; It constitutes the disconnecting portion 1a.
[0020]
A movable contact portion conductor 6 derived from the movable contact portion 5 of the disconnecting portion 1 a in a direction perpendicular to the longitudinal direction of the bus conductor 3 is provided inside the container 2, and is insulated from the flange 7 of the container 2 via the insulating spacer 8. Supported. The movable contact conductor 6 is connected to another gas insulated electric machine (not shown). A movable contact 9 that opens and closes between the two contact portions is provided between the fixed contact portion 4 and the movable contact portion 5 of the disconnecting portion 1a, and is slidably inserted into the movable contact portion 5.
[0021]
A rack 10 is formed on the movable contact 9, an operating device (not shown) is arranged outside the container 2, and a pinion 12 is formed on an insulating rod 11 connected to the operating device. The opening and closing operation is performed by driving the movable contact 9 by meshing with the rack 10.
One end of the movable contact 9 of the disconnecting portion 1a is a contact with the fixed contact portion 4, and the other end is integrally provided with a movable contact 13 for a grounding switch.
[0022]
A fixed contact portion 15 for contacting the movable contact 13 is provided on the flange 14 side of the container 2 opposed to the movable contact portion 5 having the movable contact 13 built therein. The contact portion 15 is connected to a connection conductor 18 which is integrally fixed to an insulating terminal 17 provided outside the container 2, is gas-tightly supported by the insulating terminal 17 on the insulating spacer 21 b, and is drawn out of the container 2. .
[0023]
The movable contact 9 and the movable contact 13 are integrally slidably opened and closed integrally between the movable contact 13 of the grounding switch 16 and the contact portion of the fixed contact 15 to form a three-position disconnector. When the child 13 is put into the fixed contact portion 15, the potential of the movable contact portion 5 is insulated from the container 2 via the insulating terminal 17, is led out of the container 2, and is set to the ground potential. The main circuit resistance and the insulation resistance can be measured via the connection conductor 18 thus derived.
[0024]
According to the embodiment of the present invention, the fixed contact portion 15 for the grounding switch is gas-tightly insulated and supported directly on the container 2 by the insulating terminal 17 provided outside the container 2 and is drawn out of the container 2. As a result, the measurement of the main circuit resistance and the insulation resistance can be performed, and the measurement can be made up of the minimum number of components, the insulation terminal portion is reduced, and the space can be effectively used.
[0025]
Further, as shown in FIG. 2, the insulating terminal 17 may be arranged eccentrically from the center axis 13 a of the movable contact 13 of the grounding switch 16.
In this way, when another conductor 19 is connected to the bus conductor 3, a sufficient connection space can be secured.
[0026]
Further, as shown in FIG. 3, the connection conductor 18 connected to the fixed contact portion 15 is led out to the dead space 2d in the container 2 so as to be drawn out at right angles to the central axis 13a of the movable contact 13 of the grounding switch 16. Then, the insulating terminal 17 may be integrally fixed to the insulating terminal 17 and the insulating terminal 17 may be insulated and hermetically supported on the container 2.
[0027]
With this configuration, the connection conductor 18 connected to the conductor of the fixed contact portion 15 of the grounding switch 16 is disposed in the dead space 2d portion in the container 2, and the dead space 2d can be effectively used.
[0028]
Next, a second embodiment of the present invention will be described with reference to FIG. As shown in FIG. 4, the insulating terminal 17 is eccentric from the center axis 13a of the movable contact 13 of the grounding switch 16 and is insulated and air-tightly connected to the insulating spacer 21b. A shunt 20 is provided for connecting the potential connected to the connection conductor 18 to the container 2 via the shunt 20 as a ground potential, and the shunt 20 is eccentrically connected to the movable contact 13 between the connection conductor 18 and the container 2.
[0029]
As described above, according to the embodiment of the present invention, the shunt 20 for connecting the potential of the movable contact 13 to the container 2 as the ground potential is eccentrically connected to the movable contact 13 and connected to the container 2 to thereby form the main circuit. Since the resistance and insulation resistance can be measured and the connection conductor 18 and the shunt 20 are not arranged in parallel, for example, when the shunt 20 is connected to the container 2 coaxially with the movable contact 13 as shown in FIG. The connecting conductor 18 and the shunt 20 are arranged in parallel, so that the connecting conductor 18 and the shunt 20 are acted upon by an electromagnetic force when a short-time current is applied. However, according to the second embodiment of the present invention, the connecting conductor 18 and the shunt 20 are short. The electromagnetic force generated by the passage of the time current does not act on the movable contact, so that the quality can be improved.
[0030]
【The invention's effect】
According to the present invention as described above, a conductor is led out in a direction orthogonal to a bus conductor disposed in a container filled with an insulating gas, and a fixed contact portion of a disconnecting portion is provided on the conductor, and a movable contact is provided at a position facing the conductor. A movable contact is provided so as to be able to freely contact and separate from the fixed contact portion of the disconnecting portion, and an operating device for driving the movable contact is arranged, and one end of the movable contact of the disconnecting portion is grounded. A gas that constitutes a three-position disconnector in which a movable contact for a switch is provided, and a fixed contact for a grounded switch is provided at a position facing the movable contact, so that the disconnecting part and the movable contact of the grounded switch are integrated and interlocked. In the insulated switchgear, the fixed contact part for the grounding switch is drawn out of the container by the connection conductor insulated and supported by the insulating terminal provided outside the container. And enable dead space in the container And use, the main circuit resistance, with measurement functions such as insulation resistance, can be obtained enhanced gas insulated switchgear quality.
[Brief description of the drawings]
FIG. 1 is a sectional view showing a gas-insulated switch according to a first embodiment of the present invention.
FIG. 2 is a sectional view showing a modification of the gas-insulated switch according to the embodiment of the present invention;
FIG. 3 is a sectional view showing a modification of the gas-insulated switch according to one embodiment of the present invention.
FIG. 4 is a sectional view showing a gas-insulated switch according to a second embodiment of the present invention.
FIG. 5 is a sectional view for explaining the operation of the gas-insulated switch according to the second embodiment of the present invention.
FIG. 6 is a sectional view showing a conventional gas-insulated switch.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Disconnector, 2 ... Container, 3 ... Bus conductor, 4 ... Fixed contact part of disconnector, 5 ... Movable contact part of disconnector, 9 ... Movable contact, 13 ... Movable contact of grounding switch, 15 ... Fixed contact portion of ground switch, 16 ground switch, 17 insulating terminal, 18 connection conductor, 20 shunt, 21a, 21b insulating spacer.

Claims (5)

絶縁ガスを封入した容器内に配置した母線導体と直交する方向に導体を導出し、この導体に断路部の固定接触部を設け、対向した位置に可動接触部を設け、前記断路部の固定接触部に対して、接離自在に可動接触子を設け、この可動接触子を駆動する操作装置が配置され、前記断路部の可動接触子の一方端に接地開閉器用の可動接触子を設け、これに対向した位置に接地開閉器用の固定接触部を設け、断路部と接地開閉器の可動接触子が一体となって連動する三位置断路器を構成するガス絶縁開閉器において、接地開閉器用の固定接触部を容器外に設けた絶縁端子にて絶縁支持された接続導体で容器外に引き出したことを特徴とするガス絶縁開閉器。A conductor is derived in a direction orthogonal to the bus conductor arranged in the container filled with the insulating gas, a fixed contact portion of the disconnecting portion is provided on the conductor, and a movable contact portion is provided at a position facing the conductor, and the fixed contact of the disconnecting portion is provided. A movable contact is provided to the part so as to be freely contactable and detachable, an operating device for driving the movable contact is disposed, and a movable contact for a grounding switch is provided at one end of the movable contact in the disconnecting part. A fixed contact for the earthing switch is provided at a position facing the ground, and the fixed part for the earthing switch in the gas insulated switch that constitutes a three-position disconnector in which the disconnecting part and the movable contact of the earthing switch are integrated and interlocked A gas insulated switch wherein a contact portion is drawn out of the container by a connection conductor insulated and supported by an insulating terminal provided outside the container. 接地開閉器の可動接触子の中心軸より偏芯させて絶縁端子を設けたことを特徴とする請求項１に記載のガス絶縁開閉器。2. The gas insulated switch according to claim 1, wherein an insulating terminal is provided eccentrically from a center axis of a movable contact of the grounding switch. 接地開閉器の固定接触部の接続導体をタンク内のデッドスペースに導出したことを特徴とする請求項１に記載のガス絶縁開閉器。2. The gas insulated switch according to claim 1, wherein the connection conductor of the fixed contact portion of the grounding switch is led to a dead space in the tank. 接地開閉器の可動接触子の中心軸に対して直角方向に接続導体を引き出したことを特徴とする請求項１に記載のガス絶縁開閉器。2. The gas insulated switch according to claim 1, wherein the connection conductor is drawn out in a direction perpendicular to the central axis of the movable contact of the grounding switch. 絶縁ガスを封入した容器内に配置した母線導体と直交する方向に導体を導出し、この導体に断路部の固定接触部を設け、対向した位置に可動接触部を設け、前記断路部の固定接触部に対して、接離自在に可動接触子を設け、この可動接触子を駆動する操作装置が配置され、前記断路部の可動接触子の一方端に接地開閉器用の可動接触子を設け、これに対向した位置に接地開閉器用の固定接触部を設け、断路部と接地開閉器の可動接触子が一体となって連動する三位置断路器を構成するガス絶縁開閉器において、接地開閉器用の固定接触部を容器外に設けた絶縁端子にて絶縁支持された接続導体で容器外に引き出し、この接続導体と容器とを接続するシャントを接地開閉器の可動接触子と偏芯して設けたことを特徴とするガス絶縁開閉器。A conductor is derived in a direction orthogonal to the bus conductor arranged in the container filled with the insulating gas, a fixed contact portion of the disconnecting portion is provided on the conductor, and a movable contact portion is provided at a position facing the conductor, and the fixed contact of the disconnecting portion is provided. A movable contact is provided to the part so as to be freely contactable and detachable, an operating device for driving the movable contact is disposed, and a movable contact for a grounding switch is provided at one end of the movable contact in the disconnecting part. A fixed contact for the earthing switch is provided at a position facing the ground, and the fixed part for the earthing switch in the gas insulated switch that constitutes a three-position disconnector in which the disconnecting part and the movable contact of the earthing switch are integrated and interlocked The contact portion is drawn out of the container by a connection conductor insulated and supported by an insulating terminal provided outside the container, and a shunt for connecting the connection conductor and the container is provided eccentrically with the movable contact of the grounding switch. A gas-insulated switch.
JP2002284855A 2002-09-30 2002-09-30 Gas insulated switching device Pending JP2004120974A (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007159210A (en) * 2005-12-02 2007-06-21 Japan Ae Power Systems Corp Gas-insulated device
DE102006056656A1 (en) * 2006-11-29 2008-06-12 Areva Sachsenwerk Gmbh Switch module for medium voltage electrical switchgear, has metallic housing, which has cylindrical base body with longitudinal axis and right angled outlet, that sticks out from base body
EP2254135A1 (en) * 2009-05-20 2010-11-24 ABB Technology AG Metal-enclosed, multi-phase gas-insulated busbar disconnecting and earthing switch
CN102024611A (en) * 2010-08-17 2011-04-20 郑文秀 Three-position disconnecting switch
JP5128022B1 (en) * 2012-04-20 2013-01-23 三菱電機株式会社 Gas insulated switchgear
JP2014534800A (en) * 2011-10-25 2014-12-18 アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ Electrical switch device at the connection point between two points in the network
CN110718888A (en) * 2019-11-20 2020-01-21 中国电建集团河南工程有限公司 Construction method of rectangular bus at generator outlet of large-scale transformer substation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007159210A (en) * 2005-12-02 2007-06-21 Japan Ae Power Systems Corp Gas-insulated device
DE102006056656A1 (en) * 2006-11-29 2008-06-12 Areva Sachsenwerk Gmbh Switch module for medium voltage electrical switchgear, has metallic housing, which has cylindrical base body with longitudinal axis and right angled outlet, that sticks out from base body
EP2254135A1 (en) * 2009-05-20 2010-11-24 ABB Technology AG Metal-enclosed, multi-phase gas-insulated busbar disconnecting and earthing switch
WO2010133451A1 (en) * 2009-05-20 2010-11-25 Abb Technology Ag Metal-encapsulated, multi-phase, gas-insulated disconnecting and grounding switch for bus bar
US8552317B2 (en) 2009-05-20 2013-10-08 Abb Technology Ag Metal-encapsulated, polyphase, gas-insulated busbar switch disconnector and earthing switch
CN102024611A (en) * 2010-08-17 2011-04-20 郑文秀 Three-position disconnecting switch
JP2014534800A (en) * 2011-10-25 2014-12-18 アルストム テクノロジー リミテッドＡＬＳＴＯＭ Ｔｅｃｈｎｏｌｏｇｙ Ｌｔｄ Electrical switch device at the connection point between two points in the network
JP5128022B1 (en) * 2012-04-20 2013-01-23 三菱電機株式会社 Gas insulated switchgear
CN110718888A (en) * 2019-11-20 2020-01-21 中国电建集团河南工程有限公司 Construction method of rectangular bus at generator outlet of large-scale transformer substation

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