WO2023139642A1 - Gas-insulated switchgear - Google Patents

Gas-insulated switchgear Download PDF

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Publication number
WO2023139642A1
WO2023139642A1 PCT/JP2022/001581 JP2022001581W WO2023139642A1 WO 2023139642 A1 WO2023139642 A1 WO 2023139642A1 JP 2022001581 W JP2022001581 W JP 2022001581W WO 2023139642 A1 WO2023139642 A1 WO 2023139642A1
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WO
WIPO (PCT)
Prior art keywords
disconnecting switch
bus
line
gas
terminal cover
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PCT/JP2022/001581
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French (fr)
Japanese (ja)
Inventor
嘉仁 李
剛 西島
佳郎 檜山
Original Assignee
株式会社東芝
東芝エネルギーシステムズ株式会社
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Application filed by 株式会社東芝, 東芝エネルギーシステムズ株式会社 filed Critical 株式会社東芝
Priority to PCT/JP2022/001581 priority Critical patent/WO2023139642A1/en
Publication of WO2023139642A1 publication Critical patent/WO2023139642A1/en

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear
    • H02B13/045—Details of casing, e.g. gas tightness

Definitions

  • the embodiment of the present invention relates to a gas insulated switchgear.
  • Gas-insulated switchgear is used at power plants or substations.
  • a gas-insulated switchgear employing the double-busbar system has double-busbars (a pair of busbars) and a plurality of lines connected to the double-busbars.
  • Double-busbars a pair of busbars
  • lines connected to the double-busbars.
  • the problem to be solved by the present invention is to provide a gas-insulated switchgear capable of suppressing the stopping range of the busbars and lines during line expansion work.
  • the gas-insulated switchgear of the embodiment has a plurality of busbars and a busbar-side disconnector/grounding switch unit.
  • the bus-side disconnector/earth switch unit is connected to a plurality of busbars and filled with insulating gas.
  • the bus-side disconnecting switch/earth switch unit has a plurality of disconnecting switches and a terminal cover.
  • a plurality of disconnectors are connected to the plurality of busbars, respectively.
  • a plurality of disconnect switches and terminal covers are separated into compartments of mutually different insulating gases.
  • the plurality of busbars has a first busbar and a second busbar.
  • the plurality of disconnectors has a first disconnector connected to the first bus and a second disconnector connected to the second bus.
  • the busside disconnector/earth switch unit has an earth switch.
  • a grounding switch is connected between the first and second disconnectors and the terminal cover.
  • the grounding switch is separated into a compartment of insulating gas that is different from the first and second disconnectors and the terminal cover.
  • the schematic block diagram of the gas insulated switchgear of 1st Embodiment is a schematic configuration diagram of a conventional gas-insulated switchgear; FIG.
  • FIG. 1 is a schematic configuration diagram of a gas-insulated switchgear according to a first embodiment.
  • An electric circuit of a gas insulated switchgear (GIS) 1 is formed by a conductor and a tank covering the outer periphery of the conductor.
  • An insulating gas such as SF6 is sealed inside the tank.
  • An electric circuit of the gas-insulated switchgear 1 is separated into a plurality of compartments of insulating gas (hereinafter sometimes referred to as gas compartments) by insulating spacers.
  • a gas compartment is a closed area in which an insulating gas is partitioned.
  • the insulating spacer supports the conductor and partitions the interior of the tank in the axial direction of the conductor.
  • the insulating spacer is made of an insulating material such as resin.
  • the gas-insulated switchgear 1 has double busbars (a pair of busbars) A and B, a bus-side disconnecting switch/grounding switch unit 80 for the existing line E, a circuit breaker 90 , and a line-side unit 92 .
  • Components of the gas-insulated switchgear 1 are connected to the double busbars A and B in order.
  • the direction of the double busbars A and B along the connecting path of the components may be called the busbar side, and the direction opposite to the busbar side may be called the line side.
  • Double busbars A and B have a first busbar A and a second busbar B.
  • a bus-side disconnector/grounding switch unit (hereinafter sometimes simply referred to as a disconnector unit) 80 is connected to double buses A and B, respectively.
  • the disconnector unit 80 connects and disconnects the electric circuit between the double buses A, B and the circuit breaker 90 .
  • the disconnecting switch unit 80 for the existing line E has the same configuration as the bus-side disconnecting switch/grounding switch unit 10 for the new line N, which will be described in detail below, except for the terminal cover 40 .
  • the disconnecting switch unit 80 for the existing line E may have the same configuration as the prior art disconnecting switch unit 80 shown in FIG.
  • the circuit breaker 90 is connected to the line side of the disconnector unit 80 .
  • the circuit breaker 90 connects and disconnects the electric circuit between the double buses A, B and the existing line E.
  • the line side unit 92 is connected to the circuit breaker 90 .
  • the line-side unit 92 has a line-side disconnector/grounding switch 93 , an instrument transformer 94 , a branch bus 95 , a lightning arrestor 96 and a bushing 97 .
  • the gas-insulated switchgear 1 has a bus-side disconnecting switch/grounding switch unit (hereinafter sometimes simply referred to as disconnecting switch unit) 10 for the new line N.
  • the disconnecting switch unit 10 is installed in advance when the gas-insulated switchgear 1 is newly installed.
  • the disconnecting switch unit 10 is connected to the double busbars A,B. An insulating gas is sealed inside the disconnecting switch unit 10 .
  • the disconnecting switch unit 10 has a plurality of disconnecting switches (first disconnecting switch 10A and second disconnecting switch 10B) respectively connected to the double buses A and B, an earthing switch 20, and a terminal cover 40.
  • the first disconnecting switch 10A and the second disconnecting switch 10B are bus side disconnecting switches that do not include an earthing switch.
  • the busbar side of the first disconnecting switch 10A is connected to the first busbar A. As shown in FIG. The first disconnecting switch 10A is the same gas compartment as the first bus A, but may be separated into a gas compartment different from the first bus A.
  • the busbar side of the second disconnecting switch 10B is connected to the second busbar B. As shown in FIG. The second disconnecting switch 10B is the same gas compartment as the second bus B, but may be separated into a gas compartment different from the second bus B.
  • the line side of the first disconnecting switch 10A is connected to the bus line side of the grounding switch 20 via an insulating spacer 16A.
  • the first disconnecting switch 10A and the grounding switch 20 are separated into different gas compartments by insulating spacers 16A.
  • the line side of the second disconnecting switch 10B is connected to the bus line side of the earthing switch 20 via an insulating spacer 16B.
  • the second disconnecting switch 10B and the grounding switch 20 are separated into different gas compartments by insulating spacers 16B.
  • the grounding switch 20 is connected between the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40 .
  • the grounding switch 20 is separated into compartments of insulating gas different from the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40 .
  • the line side of the earthing switch 20 is connected to the terminal cover 40 via the insulating spacer 26 .
  • the ground switch 20 and terminal cover 40 are separated into different gas compartments by insulating spacers 26 .
  • the terminal cover 40 covers the line-side terminal 42 of the disconnecting switch unit 10 .
  • a method for adding a new line N in the gas insulated switchgear of the first embodiment will be described.
  • the energization of the first bus A or the second bus B continues.
  • the disconnecting switch unit 80 of the existing line E the disconnecting switch on the side of the bus, which continues to be energized, of the first disconnecting switch 80A and the second disconnecting switch 80B is closed. As a result, energization of the existing line E is continued.
  • both the first disconnecting switch 10A and the second disconnecting switch 10B are opened. Since the energization of the first bus line A or the second bus line B continues, the inter-electrode voltage acts on the first disconnecting switch 10A or the second disconnecting switch 10B.
  • the first disconnecting switch 10A or the second disconnecting switch 10B maintains an insulating state with a high-voltage insulating gas.
  • the insulating gas of the earthing switch 20 is decompressed.
  • the insulating gas in the terminal cover 40 is recovered, and the terminal cover 40 is removed. Since the earthing switch 20 is decompressed, an excessive differential pressure does not act on the insulating spacer 26. - ⁇
  • the track side terminal 42 is exposed. Since the first disconnecting switch 10A and the second disconnecting switch 10B are opened, the line-side terminal 42 can be forcibly dropped to the ground potential.
  • a circuit breaker 90 and a line-side unit 92 are connected to the line-side terminal 42 in the same manner as the existing line E. As described above, the addition of the new line N is completed.
  • FIG. 3 is a schematic configuration diagram of a conventional gas-insulated switchgear.
  • the line sides of the first disconnecting switch 10A and the second disconnecting switch 10B are interconnected via an insulating spacer 16A.
  • the second disconnecting switch 10B is an integrated disconnecting switch/grounding switch including the grounding switch 18 .
  • the line side of the second disconnecting switch 10B is connected to the terminal cover 40 via the insulating spacer 16B.
  • a method for adding a new line N in a conventional gas-insulated switchgear will be described.
  • the energization of the first bus line A is continued, and the energization of the second bus line B is stopped.
  • the disconnecting switch unit 80 of the existing line E the first disconnecting switch 80A is closed and the second disconnecting switch 80B is opened.
  • the existing line E continues to be energized from the first bus line A through the first disconnecting switch 80A.
  • both the first disconnecting switch 10A and the second disconnecting switch 10B are opened. Since the energization of the first bus line A is continued, the inter-electrode voltage acts on the first disconnecting switch 10A. The first disconnecting switch 10A maintains an insulating state with a high-voltage insulating gas. Since the energization of the second bus B is stopped, the inter-electrode voltage does not act on the second disconnecting switch 10B. The pressure of the insulating gas in the second disconnecting switch 10B is reduced (part of the insulating gas is recovered). All of the insulating gas in the terminal cover 40 is collected and the terminal cover 40 is removed. Since the second disconnecting switch 10B is decompressed, no excessive differential pressure acts on the insulating spacer 16B.
  • the track side terminal 42 is exposed. Since the first disconnecting switch 10A and the second disconnecting switch 10B are opened, the line-side terminal 42 can be forcibly dropped to the ground potential.
  • a circuit breaker 90 and a line-side unit 92 are connected to the line-side terminal 42 in the same manner as the existing line E. As described above, the addition of the new line N is completed. As described above, in the gas-insulated switchgear 1 of the prior art, in order to carry out the extension work of the new line N, the second bus B must be stopped.
  • the disconnecting switch unit 10 has the earthing switch 20 .
  • the grounding switch 20 is connected between the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40, and is separated into a compartment of insulating gas different from the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40.
  • the expansion work of the new line N is carried out while the double buses A and B and the existing line E continue to be energized. Therefore, it is possible to suppress or eliminate the stoppage range of the busbar and the line at the time of line extension work.
  • FIG. 2 is a schematic configuration diagram of a gas-insulated switchgear according to a second embodiment.
  • the gas-insulated switchgear 1 of the second embodiment differs from the first embodiment in that the disconnector has an insulating gas compartment partitioned by an insulating spacer on the terminal cover side.
  • the description of the second embodiment regarding the same points as the first embodiment may be omitted.
  • the gas-insulated switchgear 1 has a disconnecting switch unit 10 for the new line N in addition to the existing line E.
  • the disconnecting switch unit 80 for the existing line E has the same configuration as the disconnecting switch unit 10 for the new line N, which will be described in detail below, except for the terminal covers 40A and 40B.
  • the disconnecting switch unit 80 for the existing line E may have the same configuration as the prior art disconnecting switch unit 80 shown in FIG.
  • the disconnecting switch unit 10 has a plurality of disconnecting switches (first disconnecting switch 10A and second disconnecting switch 10B) connected respectively to the double buses A and B, a first terminal cover 40A, and a second terminal cover 40B.
  • the second disconnecting switch 10B is an integrated disconnecting switch/grounding switch including the grounding switch 18 .
  • the line side of the first disconnector 10A is connected to the first terminal cover 40A via an insulating spacer 16A.
  • the first disconnector 10A and the first terminal cover 40A are separated into different gas compartments by insulating spacers 16A.
  • the first terminal cover 40A covers the track side terminal 42 of the first disconnecting switch 10A.
  • the inside of the first disconnector 10A is separated into a first main body section 13A and a first spare section 15A by an insulating spacer 14A.
  • the first body section 13A is formed on the busbar side inside the first disconnecting switch 10A.
  • the first body section 13A connects and disconnects the electric circuit of the first disconnector 10A.
  • the first spare section 15A is formed on the line side inside the first disconnecting switch 10A.
  • the first body compartment 13A and the first spare compartment 15A are separated into different gas compartments by insulating spacers 14A.
  • a double insulating spacer (insulating spacer 14A and insulating spacer 16A) forms the first spare compartment 15A.
  • the line side of the second disconnector 10B is connected to the second terminal cover 40B via the insulating spacer 16B.
  • the second disconnector 10B and the second terminal cover 40B are separated into different gas compartments by insulating spacers 16B.
  • the second terminal cover 40B covers the track side terminal 42 of the second disconnector 10B.
  • the inside of the second disconnecting switch 10B is separated into a second body section 13B and a second spare section 15B by an insulating spacer 14B.
  • the second body section 13B is formed on the busbar side inside the second disconnecting switch 10B.
  • the second body section 13B connects and disconnects the electric circuit of the second disconnector 10B.
  • the second spare section 15B is formed on the line side inside the second disconnecting switch 10B.
  • the second body compartment 13B and the second spare compartment 15B are separated into different gas compartments by insulating spacers 14B.
  • a second spare compartment 15B is formed by a double insulating spacer (insulating spacer 14B and insulating spacer 16B).
  • a method for adding a new line N in the gas insulated switchgear of the second embodiment will be described.
  • the energization of the first bus A or the second bus B continues.
  • the disconnecting switch unit 80 of the existing line E the disconnecting switch on the side of the bus, which continues to be energized, of the first disconnecting switch 80A and the second disconnecting switch 80B is closed. As a result, energization of the existing line E is continued.
  • both the first disconnecting switch 10A and the second disconnecting switch 10B are opened. Since the energization of the first bus A and the second bus B continues, the inter-electrode voltage acts on the first body section 13A of the first disconnecting switch 10A and the second body section 13B of the second disconnecting switch 10B.
  • the first body section 13A and the second body section 13B are kept insulated by high-pressure insulating gas.
  • the insulating gas in the first preliminary compartment 15A and the second preliminary compartment 15B is decompressed.
  • the insulating gas is recovered from the first terminal cover 40A and the second terminal cover 40B, and both are removed. Since the first preliminary section 15A and the second preliminary section 15B are decompressed, an excessive differential pressure does not act on the insulating spacers 16A and 16B.
  • the track side terminal 42 is exposed. Since the first disconnecting switch 10A and the second disconnecting switch 10B are opened, the line-side terminal 42 can be forcibly dropped to the ground potential.
  • a circuit breaker 90 and a line-side unit 92 are connected to the line-side terminal 42 in the same manner as the existing line E. As described above, the addition of the new line N is completed.
  • the first disconnecting switch 10A has the first preliminary section 15A partitioned by the insulating spacer 14A at the end on the first terminal cover 40A side.
  • the second disconnecting switch 10B has a second preliminary compartment 15B partitioned by an insulating spacer 14B at the end on the second terminal cover 40B side.
  • the line side of the first disconnecting switch 10A is connected to the first terminal cover 40A
  • the line side of the second disconnecting switch 10B is connected to the second terminal cover 40B
  • the line sides of the first disconnecting switch 10A and the second disconnecting switch 10B may be connected to one and the same terminal cover. This suppresses an increase in terminal cover.

Abstract

The gas-insulated switchgear according to an embodiment has a plurality of bus lines and a bus-line-side disconnector/ground switch unit. The bus-line-side disconnector/ground switch unit is connected to the plurality of bus lines, and an insulating gas is sealed thereinside. The bus-line-side disconnector/ground switch unit has a plurality of disconnectors and a terminal cover. The plurality of disconnectors are respectively connected to the plurality of bus lines. The plurality of disconnectors and the terminal cover are isolated into mutually different insulating gas zones. The plurality of bus lines have a first bus line and a second bus line. The plurality of disconnectors have a first disconnector connected to the first bus line and a second disconnector connected to the second bus line. The bus-line-side disconnector/ground switch unit has a ground switch. The ground switch is connected between the first disconnector and the terminal cover and between the second disconnector and the terminal cover. The ground switch is isolated into an insulating gas zone different from the first disconnector, the second disconnector, and the terminal cover.

Description

ガス絶縁開閉装置gas insulated switchgear
　本発明の実施形態は、ガス絶縁開閉装置に関する。 The embodiment of the present invention relates to a gas insulated switchgear.
　発電所または変電所などにおいてガス絶縁開閉装置が利用されている。複母線方式を採用しているガス絶縁開閉装置は、複母線（一対の母線）と、複母線に接続される複数の回線と、を有する。回線の増設作業時に、母線および回線の停止範囲を抑制することができるガス絶縁開閉装置が求められる。 Gas-insulated switchgear is used at power plants or substations. A gas-insulated switchgear employing the double-busbar system has double-busbars (a pair of busbars) and a plurality of lines connected to the double-busbars. There is a demand for a gas-insulated switchgear that can suppress the stopping range of busbars and lines during line extension work.
特開平３－３２３０９号公報JP-A-3-32309 特開昭６１－２５４０１０号公報JP-A-61-254010
　本発明が解決しようとする課題は、回線の増設作業時に母線および回線の停止範囲を抑制することができるガス絶縁開閉装置を提供することである。 The problem to be solved by the present invention is to provide a gas-insulated switchgear capable of suppressing the stopping range of the busbars and lines during line expansion work.
　実施形態のガス絶縁開閉装置は、複数の母線と、母線側断路器・接地開閉器ユニットと、を持つ。母線側断路器・接地開閉器ユニットは、複数の母線に接続され、内部に絶縁ガスが封入される。母線側断路器・接地開閉器ユニットは、複数の断路器と、端末カバーと、を有する。複数の断路器は、複数の母線にそれぞれ接続される。複数の断路器および端末カバーは、相互に異なる絶縁ガスの区画に分離される。複数の母線は、第１母線および第２母線を有する。複数の断路器は、第１母線に接続された第１断路器と、第２母線に接続された第２断路器と、を有する。母線側断路器・接地開閉器ユニットは、接地開閉器を有する。接地開閉器は、第１断路器および第２断路器と端末カバーとの間に接続される。接地開閉器は、第１断路器および第２断路器並びに端末カバーとは異なる絶縁ガスの区画に分離される。 The gas-insulated switchgear of the embodiment has a plurality of busbars and a busbar-side disconnector/grounding switch unit. The bus-side disconnector/earth switch unit is connected to a plurality of busbars and filled with insulating gas. The bus-side disconnecting switch/earth switch unit has a plurality of disconnecting switches and a terminal cover. A plurality of disconnectors are connected to the plurality of busbars, respectively. A plurality of disconnect switches and terminal covers are separated into compartments of mutually different insulating gases. The plurality of busbars has a first busbar and a second busbar. The plurality of disconnectors has a first disconnector connected to the first bus and a second disconnector connected to the second bus. The busside disconnector/earth switch unit has an earth switch. A grounding switch is connected between the first and second disconnectors and the terminal cover. The grounding switch is separated into a compartment of insulating gas that is different from the first and second disconnectors and the terminal cover.
第１の実施形態のガス絶縁開閉装置の概略構成図。BRIEF DESCRIPTION OF THE DRAWINGS The schematic block diagram of the gas insulated switchgear of 1st Embodiment. 第２の実施形態のガス絶縁開閉装置の概略構成図。The schematic block diagram of the gas insulated switchgear of 2nd Embodiment. 従来技術のガス絶縁開閉装置の概略構成図。1 is a schematic configuration diagram of a conventional gas-insulated switchgear; FIG.
　以下、実施形態のガス絶縁開閉装置を、図面を参照して説明する。
（第１の実施形態）
　図１は、第１の実施形態のガス絶縁開閉装置の概略構成図である。ガス絶縁開閉装置（Gas Insulated Switchgear：ＧＩＳ）１の電路は、導体および導体の外周を覆うタンクにより形成される。タンクの内部には、ＳＦ６等の絶縁ガスが封入される。ガス絶縁開閉装置１の電路は、絶縁スペーサにより複数の絶縁ガスの区画（以下、ガス区画と言う場合がある。）に分離される。ガス区画とは、絶縁ガスが仕切られて密閉された領域である。絶縁スペーサは、導体を支持するとともに、タンクの内部を導体の軸方向に仕切る。絶縁スペーサは、樹脂等の絶縁材料で形成される。 Gas-insulated switchgear according to embodiments will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a schematic configuration diagram of a gas-insulated switchgear according to a first embodiment. An electric circuit of a gas insulated switchgear (GIS) 1 is formed by a conductor and a tank covering the outer periphery of the conductor. An insulating gas such as SF6 is sealed inside the tank. An electric circuit of the gas-insulated switchgear 1 is separated into a plurality of compartments of insulating gas (hereinafter sometimes referred to as gas compartments) by insulating spacers. A gas compartment is a closed area in which an insulating gas is partitioned. The insulating spacer supports the conductor and partitions the interior of the tank in the axial direction of the conductor. The insulating spacer is made of an insulating material such as resin.
　ガス絶縁開閉装置１は、複母線（一対の母線）Ａ，Ｂと、既設回線Ｅ用の母線側断路器・接地開閉器ユニット８０と、遮断器９０と、線路側ユニット９２と、を有する。ガス絶縁開閉装置１の構成要素は複母線Ａ，Ｂに対して順に接続される。以下には、構成要素の接続経路に沿った複母線Ａ，Ｂの方向を母線側と呼び、母線側とは反対の方向を線路側と呼ぶ場合がある。
　複母線Ａ，Ｂは、第１母線Ａおよび第２母線Ｂを有する。 The gas-insulated switchgear 1 has double busbars (a pair of busbars) A and B, a bus-side disconnecting switch/grounding switch unit 80 for the existing line E, a circuit breaker 90 , and a line-side unit 92 . Components of the gas-insulated switchgear 1 are connected to the double busbars A and B in order. Hereinafter, the direction of the double busbars A and B along the connecting path of the components may be called the busbar side, and the direction opposite to the busbar side may be called the line side.
Double busbars A and B have a first busbar A and a second busbar B.
　母線側断路器・接地開閉器ユニット（以下、単に断路器ユニットと言う場合がある。）８０は、複母線Ａ，Ｂにそれぞれ接続される。断路器ユニット８０は、複母線Ａ，Ｂと遮断器９０との間の電路を接続および開放する。既設回線Ｅ用の断路器ユニット８０は、端末カバー４０を除いて、以下に詳述される新設回線Ｎ用の母線側断路器・接地開閉器ユニット１０と同一構成である。既設回線Ｅ用の断路器ユニット８０は、図３に示される従来技術の断路器ユニット８０と同一構成でもよい。 A bus-side disconnector/grounding switch unit (hereinafter sometimes simply referred to as a disconnector unit) 80 is connected to double buses A and B, respectively. The disconnector unit 80 connects and disconnects the electric circuit between the double buses A, B and the circuit breaker 90 . The disconnecting switch unit 80 for the existing line E has the same configuration as the bus-side disconnecting switch/grounding switch unit 10 for the new line N, which will be described in detail below, except for the terminal cover 40 . The disconnecting switch unit 80 for the existing line E may have the same configuration as the prior art disconnecting switch unit 80 shown in FIG.
　遮断器９０は、断路器ユニット８０の線路側に接続される。遮断器９０は、複母線Ａ，Ｂと既設回線Ｅとの間の電路を接続および開放する。
　線路側ユニット９２は、遮断器９０に接続される。線路側ユニット９２は、線路側断路器・接地開閉器９３と、計器用変成器９４と、分岐母線９５と、避雷器９６と、ブッシング９７と、を有する。 The circuit breaker 90 is connected to the line side of the disconnector unit 80 . The circuit breaker 90 connects and disconnects the electric circuit between the double buses A, B and the existing line E.
The line side unit 92 is connected to the circuit breaker 90 . The line-side unit 92 has a line-side disconnector/grounding switch 93 , an instrument transformer 94 , a branch bus 95 , a lightning arrestor 96 and a bushing 97 .
　ガス絶縁開閉装置１は、新設回線Ｎ用の母線側断路器・接地開閉器ユニット（以下、単に断路器ユニットと言う場合がある。）１０を有する。断路器ユニット１０は、ガス絶縁開閉装置１の新設時に予め設置されている。 The gas-insulated switchgear 1 has a bus-side disconnecting switch/grounding switch unit (hereinafter sometimes simply referred to as disconnecting switch unit) 10 for the new line N. The disconnecting switch unit 10 is installed in advance when the gas-insulated switchgear 1 is newly installed.
　断路器ユニット１０は、複母線Ａ，Ｂに接続される。断路器ユニット１０の内部には、絶縁ガスが封入される。
　断路器ユニット１０は、複母線Ａ，Ｂにそれぞれ接続された複数の断路器（第１断路器１０Ａおよび第２断路器１０Ｂ）と、接地開閉器２０と、端末カバー４０と、を有する。第１断路器１０Ａおよび第２断路器１０Ｂは、接地開閉器を含まない母線側断路器である。 The disconnecting switch unit 10 is connected to the double busbars A,B. An insulating gas is sealed inside the disconnecting switch unit 10 .
The disconnecting switch unit 10 has a plurality of disconnecting switches (first disconnecting switch 10A and second disconnecting switch 10B) respectively connected to the double buses A and B, an earthing switch 20, and a terminal cover 40. The first disconnecting switch 10A and the second disconnecting switch 10B are bus side disconnecting switches that do not include an earthing switch.
　第１断路器１０Ａの母線側は、第１母線Ａに接続される。第１断路器１０Ａは、第１母線Ａと同じガス区画であるが、第１母線Ａとは異なるガス区画に分離されてもよい。
　第２断路器１０Ｂの母線側は、第２母線Ｂに接続される。第２断路器１０Ｂは、第２母線Ｂと同じガス区画であるが、第２母線Ｂとは異なるガス区画に分離されてもよい。 The busbar side of the first disconnecting switch 10A is connected to the first busbar A. As shown in FIG. The first disconnecting switch 10A is the same gas compartment as the first bus A, but may be separated into a gas compartment different from the first bus A.
The busbar side of the second disconnecting switch 10B is connected to the second busbar B. As shown in FIG. The second disconnecting switch 10B is the same gas compartment as the second bus B, but may be separated into a gas compartment different from the second bus B.
　第１断路器１０Ａの線路側は、絶縁スペーサ１６Ａを介して、接地開閉器２０の母線側に接続される。第１断路器１０Ａおよび接地開閉器２０は、絶縁スペーサ１６Ａにより異なるガス区画に分離される。
　第２断路器１０Ｂの線路側は、絶縁スペーサ１６Ｂを介して、接地開閉器２０の母線側に接続される。第２断路器１０Ｂおよび接地開閉器２０は、絶縁スペーサ１６Ｂにより異なるガス区画に分離される。 The line side of the first disconnecting switch 10A is connected to the bus line side of the grounding switch 20 via an insulating spacer 16A. The first disconnecting switch 10A and the grounding switch 20 are separated into different gas compartments by insulating spacers 16A.
The line side of the second disconnecting switch 10B is connected to the bus line side of the earthing switch 20 via an insulating spacer 16B. The second disconnecting switch 10B and the grounding switch 20 are separated into different gas compartments by insulating spacers 16B.
　接地開閉器２０は、第１断路器１０Ａおよび第２断路器１０Ｂと端末カバー４０との間に接続される。接地開閉器２０は、第１断路器１０Ａおよび第２断路器１０Ｂ並びに端末カバー４０とは異なる絶縁ガスの区画に分離される。
　接地開閉器２０の線路側は、絶縁スペーサ２６を介して、端末カバー４０に接続される。接地開閉器２０および端末カバー４０は、絶縁スペーサ２６により異なるガス区画に分離される。端末カバー４０は、断路器ユニット１０の線路側端末４２を覆う。 The grounding switch 20 is connected between the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40 . The grounding switch 20 is separated into compartments of insulating gas different from the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40 .
The line side of the earthing switch 20 is connected to the terminal cover 40 via the insulating spacer 26 . The ground switch 20 and terminal cover 40 are separated into different gas compartments by insulating spacers 26 . The terminal cover 40 covers the line-side terminal 42 of the disconnecting switch unit 10 .
　第１の実施形態のガス絶縁開閉装置における新設回線Ｎの増設方法について説明する。
　第１母線Ａ或いは第２母線Ｂの通電が継続される。既設回線Ｅの断路器ユニット８０では、第１断路器８０Ａおよび第２断路器８０Ｂのうち通電を継続する母線側の断路器が閉路される。これにより、既設回線Ｅの通電が継続される。 A method for adding a new line N in the gas insulated switchgear of the first embodiment will be described.
The energization of the first bus A or the second bus B continues. In the disconnecting switch unit 80 of the existing line E, the disconnecting switch on the side of the bus, which continues to be energized, of the first disconnecting switch 80A and the second disconnecting switch 80B is closed. As a result, energization of the existing line E is continued.
　新設回線Ｎの断路器ユニット１０では、第１断路器１０Ａおよび第２断路器１０Ｂの両方が開路される。第１母線Ａ或いは第２母線Ｂの通電が継続されているので、第１断路器１０Ａ或いは第２断路器１０Ｂには極間電圧が作用する。第１断路器１０Ａ或いは第２断路器１０Ｂは、高圧の絶縁ガスにより絶縁状態を保持する。接地開閉器２０の絶縁ガスが減圧される。端末カバー４０の絶縁ガスが回収され、端末カバー４０が取り外される。接地開閉器２０が減圧されているので、絶縁スペーサ２６に過大な差圧が作用しない。 In the disconnecting switch unit 10 of the new line N, both the first disconnecting switch 10A and the second disconnecting switch 10B are opened. Since the energization of the first bus line A or the second bus line B continues, the inter-electrode voltage acts on the first disconnecting switch 10A or the second disconnecting switch 10B. The first disconnecting switch 10A or the second disconnecting switch 10B maintains an insulating state with a high-voltage insulating gas. The insulating gas of the earthing switch 20 is decompressed. The insulating gas in the terminal cover 40 is recovered, and the terminal cover 40 is removed. Since the earthing switch 20 is decompressed, an excessive differential pressure does not act on the insulating spacer 26. - 特許庁
　端末カバー４０の取り外しにより、線路側端末４２が露出する。第１断路器１０Ａおよび第２断路器１０Ｂが開路されているので、線路側端末４２は強制的に接地電位に落とすことができる。線路側端末４２に対して、既設回線Ｅと同様に、遮断器９０および線路側ユニット９２が接続される。
　以上により、新設回線Ｎの増設が完了する。 By removing the terminal cover 40, the track side terminal 42 is exposed. Since the first disconnecting switch 10A and the second disconnecting switch 10B are opened, the line-side terminal 42 can be forcibly dropped to the ground potential. A circuit breaker 90 and a line-side unit 92 are connected to the line-side terminal 42 in the same manner as the existing line E.
As described above, the addition of the new line N is completed.
　図３は、従来技術のガス絶縁開閉装置の概略構成図である。従来技術の断路器ユニット１０において、第１断路器１０Ａおよび第２断路器１０Ｂの線路側は、絶縁スペーサ１６Ａを介して相互に接続される。第２断路器１０Ｂは、接地開閉器１８を含む、一体型の断路器・接地開閉器である。第２断路器１０Ｂの線路側は、絶縁スペーサ１６Ｂを介して、端末カバー４０に接続される。 FIG. 3 is a schematic configuration diagram of a conventional gas-insulated switchgear. In the prior art disconnecting switch unit 10, the line sides of the first disconnecting switch 10A and the second disconnecting switch 10B are interconnected via an insulating spacer 16A. The second disconnecting switch 10B is an integrated disconnecting switch/grounding switch including the grounding switch 18 . The line side of the second disconnecting switch 10B is connected to the terminal cover 40 via the insulating spacer 16B.
　従来技術のガス絶縁開閉装置における新設回線Ｎの増設方法について説明する。
　第１母線Ａの通電が継続され、第２母線Ｂの通電が停止される。既設回線Ｅの断路器ユニット８０では、第１断路器８０Ａが閉路され、第２断路器８０Ｂが開路される。第１母線Ａから第１断路器８０Ａを介して、既設回線Ｅの通電が継続される。 A method for adding a new line N in a conventional gas-insulated switchgear will be described.
The energization of the first bus line A is continued, and the energization of the second bus line B is stopped. In the disconnecting switch unit 80 of the existing line E, the first disconnecting switch 80A is closed and the second disconnecting switch 80B is opened. The existing line E continues to be energized from the first bus line A through the first disconnecting switch 80A.
　新設回線Ｎの断路器ユニット１０では、第１断路器１０Ａおよび第２断路器１０Ｂの両方が開路される。第１母線Ａの通電は継続されているので、第１断路器１０Ａには極間電圧が作用する。第１断路器１０Ａは、高圧の絶縁ガスにより絶縁状態を保持する。第２母線Ｂの通電は停止されているので、第２断路器１０Ｂには極間電圧が作用しない。第２断路器１０Ｂの絶縁ガスが減圧（絶縁ガスの一部が回収）される。端末カバー４０の絶縁ガスの全部が回収され、端末カバー４０が取り外される。第２断路器１０Ｂが減圧されているので、絶縁スペーサ１６Ｂに過大な差圧が作用しない。 In the disconnecting switch unit 10 of the new line N, both the first disconnecting switch 10A and the second disconnecting switch 10B are opened. Since the energization of the first bus line A is continued, the inter-electrode voltage acts on the first disconnecting switch 10A. The first disconnecting switch 10A maintains an insulating state with a high-voltage insulating gas. Since the energization of the second bus B is stopped, the inter-electrode voltage does not act on the second disconnecting switch 10B. The pressure of the insulating gas in the second disconnecting switch 10B is reduced (part of the insulating gas is recovered). All of the insulating gas in the terminal cover 40 is collected and the terminal cover 40 is removed. Since the second disconnecting switch 10B is decompressed, no excessive differential pressure acts on the insulating spacer 16B.
　端末カバー４０の取り外しにより、線路側端末４２が露出する。第１断路器１０Ａおよび第２断路器１０Ｂが開路されているので、線路側端末４２は強制的に接地電位に落とすことができる。線路側端末４２に対して、既設回線Ｅと同様に、遮断器９０および線路側ユニット９２が接続される。以上により、新設回線Ｎの増設が完了する。
　このように、従来技術のガス絶縁開閉装置１では、新設回線Ｎの増設作業を実施するために、必ず第２母線Ｂの停止が必要となる。 By removing the terminal cover 40, the track side terminal 42 is exposed. Since the first disconnecting switch 10A and the second disconnecting switch 10B are opened, the line-side terminal 42 can be forcibly dropped to the ground potential. A circuit breaker 90 and a line-side unit 92 are connected to the line-side terminal 42 in the same manner as the existing line E. As described above, the addition of the new line N is completed.
As described above, in the gas-insulated switchgear 1 of the prior art, in order to carry out the extension work of the new line N, the second bus B must be stopped.
　これに対して、前述された第１の実施形態のガス絶縁開閉装置１は、断路器ユニット１０が接地開閉器２０を有する。接地開閉器２０は、第１断路器１０Ａおよび第２断路器１０Ｂと端末カバー４０との間に接続され、第１断路器１０Ａおよび第２断路器１０Ｂ並びに端末カバー４０とは異なる絶縁ガスの区画に分離される。 On the other hand, in the gas-insulated switchgear 1 of the first embodiment described above, the disconnecting switch unit 10 has the earthing switch 20 . The grounding switch 20 is connected between the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40, and is separated into a compartment of insulating gas different from the first disconnecting switch 10A and the second disconnecting switch 10B and the terminal cover 40.
　この構成によれば、複母線Ａ，Ｂおよび既設回線Ｅの通電を継続した状態で、新設回線Ｎの増設作業が実施される。したがって、回線の増設作業時に母線および回線の停止範囲を抑制または解消することができる。 According to this configuration, the expansion work of the new line N is carried out while the double buses A and B and the existing line E continue to be energized. Therefore, it is possible to suppress or eliminate the stoppage range of the busbar and the line at the time of line extension work.
（第２の実施形態）
　図２は、第２の実施形態のガス絶縁開閉装置の概略構成図である。第２の実施形態のガス絶縁開閉装置１は、断路器が端末カバー側に絶縁スペーサで仕切られた絶縁ガス区画を有する点で、第１の実施形態とは異なる。第１の実施形態と同様である点についての第２の実施形態の説明は省略される場合がある。 (Second embodiment)
FIG. 2 is a schematic configuration diagram of a gas-insulated switchgear according to a second embodiment. The gas-insulated switchgear 1 of the second embodiment differs from the first embodiment in that the disconnector has an insulating gas compartment partitioned by an insulating spacer on the terminal cover side. The description of the second embodiment regarding the same points as the first embodiment may be omitted.
　ガス絶縁開閉装置１は、既設回線Ｅに加えて、新設回線Ｎ用の断路器ユニット１０を有する。既設回線Ｅ用の断路器ユニット８０は、端末カバー４０Ａおよび４０Ｂを除いて、以下に詳述される新設回線Ｎ用の断路器ユニット１０と同一構成である。既設回線Ｅ用の断路器ユニット８０は、図３に示される従来技術の断路器ユニット８０と同一構成でもよい。 The gas-insulated switchgear 1 has a disconnecting switch unit 10 for the new line N in addition to the existing line E. The disconnecting switch unit 80 for the existing line E has the same configuration as the disconnecting switch unit 10 for the new line N, which will be described in detail below, except for the terminal covers 40A and 40B. The disconnecting switch unit 80 for the existing line E may have the same configuration as the prior art disconnecting switch unit 80 shown in FIG.
　断路器ユニット１０は、複母線Ａ，Ｂにそれぞれ接続された複数の断路器（第１断路器１０Ａおよび第２断路器１０Ｂ）と、第１端末カバー４０Ａと、第２端末カバー４０Ｂと、を有する。第２断路器１０Ｂは、接地開閉器１８を含む、一体型の断路器・接地開閉器である。 The disconnecting switch unit 10 has a plurality of disconnecting switches (first disconnecting switch 10A and second disconnecting switch 10B) connected respectively to the double buses A and B, a first terminal cover 40A, and a second terminal cover 40B. The second disconnecting switch 10B is an integrated disconnecting switch/grounding switch including the grounding switch 18 .
　第１断路器１０Ａの線路側は、絶縁スペーサ１６Ａを介して、第１端末カバー４０Ａに接続される。第１断路器１０Ａおよび第１端末カバー４０Ａは、絶縁スペーサ１６Ａにより異なるガス区画に分離される。第１端末カバー４０Ａは、第１断路器１０Ａの線路側端末４２を覆う。 The line side of the first disconnector 10A is connected to the first terminal cover 40A via an insulating spacer 16A. The first disconnector 10A and the first terminal cover 40A are separated into different gas compartments by insulating spacers 16A. The first terminal cover 40A covers the track side terminal 42 of the first disconnecting switch 10A.
　第１断路器１０Ａの内部は、絶縁スペーサ１４Ａにより、第１本体区画１３Ａおよび第１予備区画１５Ａに分離される。第１本体区画１３Ａは、第１断路器１０Ａの内部の母線側に形成される。第１本体区画１３Ａは、第１断路器１０Ａの電路を接続および開放する。第１予備区画１５Ａは、第１断路器１０Ａの内部の線路側に形成される。第１本体区画１３Ａおよび第１予備区画１５Ａは、絶縁スペーサ１４Ａにより異なるガス区画に分離される。二重の絶縁スペーサ（絶縁スペーサ１４Ａおよび絶縁スペーサ１６Ａ）により、第１予備区画１５Ａが形成される。 The inside of the first disconnector 10A is separated into a first main body section 13A and a first spare section 15A by an insulating spacer 14A. The first body section 13A is formed on the busbar side inside the first disconnecting switch 10A. The first body section 13A connects and disconnects the electric circuit of the first disconnector 10A. The first spare section 15A is formed on the line side inside the first disconnecting switch 10A. The first body compartment 13A and the first spare compartment 15A are separated into different gas compartments by insulating spacers 14A. A double insulating spacer (insulating spacer 14A and insulating spacer 16A) forms the first spare compartment 15A.
　第２断路器１０Ｂの線路側は、絶縁スペーサ１６Ｂを介して、第２端末カバー４０Ｂに接続される。第２断路器１０Ｂおよび第２端末カバー４０Ｂは、絶縁スペーサ１６Ｂにより異なるガス区画に分離される。第２端末カバー４０Ｂは、第２断路器１０Ｂの線路側端末４２を覆う。 The line side of the second disconnector 10B is connected to the second terminal cover 40B via the insulating spacer 16B. The second disconnector 10B and the second terminal cover 40B are separated into different gas compartments by insulating spacers 16B. The second terminal cover 40B covers the track side terminal 42 of the second disconnector 10B.
　第２断路器１０Ｂの内部は、絶縁スペーサ１４Ｂにより、第２本体区画１３Ｂおよび第２予備区画１５Ｂに分離される。第２本体区画１３Ｂは、第２断路器１０Ｂの内部の母線側に形成される。第２本体区画１３Ｂは、第２断路器１０Ｂの電路を接続および開放する。第２予備区画１５Ｂは、第２断路器１０Ｂの内部の線路側に形成される。第２本体区画１３Ｂおよび第２予備区画１５Ｂは、絶縁スペーサ１４Ｂにより異なるガス区画に分離される。二重の絶縁スペーサ（絶縁スペーサ１４Ｂおよび絶縁スペーサ１６Ｂ）により、第２予備区画１５Ｂが形成される。 The inside of the second disconnecting switch 10B is separated into a second body section 13B and a second spare section 15B by an insulating spacer 14B. The second body section 13B is formed on the busbar side inside the second disconnecting switch 10B. The second body section 13B connects and disconnects the electric circuit of the second disconnector 10B. The second spare section 15B is formed on the line side inside the second disconnecting switch 10B. The second body compartment 13B and the second spare compartment 15B are separated into different gas compartments by insulating spacers 14B. A second spare compartment 15B is formed by a double insulating spacer (insulating spacer 14B and insulating spacer 16B).
　第２の実施形態のガス絶縁開閉装置における新設回線Ｎの増設方法について説明する。
　第１母線Ａ或いは第２母線Ｂの通電が継続される。既設回線Ｅの断路器ユニット８０では、第１断路器８０Ａおよび第２断路器８０Ｂのうち通電を継続する母線側の断路器が閉路される。これにより、既設回線Ｅの通電が継続される。 A method for adding a new line N in the gas insulated switchgear of the second embodiment will be described.
The energization of the first bus A or the second bus B continues. In the disconnecting switch unit 80 of the existing line E, the disconnecting switch on the side of the bus, which continues to be energized, of the first disconnecting switch 80A and the second disconnecting switch 80B is closed. As a result, energization of the existing line E is continued.
　新設回線Ｎの断路器ユニット１０では、第１断路器１０Ａおよび第２断路器１０Ｂの両方が開路される。第１母線Ａおよび第２母線Ｂの通電が継続されているので、第１断路器１０Ａの第１本体区画１３Ａおよび第２断路器１０Ｂの第２本体区画１３Ｂには極間電圧が作用する。第１本体区画１３Ａおよび第２本体区画１３Ｂは、高圧の絶縁ガスにより絶縁状態を保持する。第１予備区画１５Ａおよび第２予備区画１５Ｂの絶縁ガスが減圧される。第１端末カバー４０Ａおよび第２端末カバー４０Ｂの絶縁ガスが回収され、両者が取り外される。第１予備区画１５Ａおよび第２予備区画１５Ｂが減圧されているので、絶縁スペーサ１６Ａおよび絶縁スペーサ１６Ｂに過大な差圧が作用しない。 In the disconnecting switch unit 10 of the new line N, both the first disconnecting switch 10A and the second disconnecting switch 10B are opened. Since the energization of the first bus A and the second bus B continues, the inter-electrode voltage acts on the first body section 13A of the first disconnecting switch 10A and the second body section 13B of the second disconnecting switch 10B. The first body section 13A and the second body section 13B are kept insulated by high-pressure insulating gas. The insulating gas in the first preliminary compartment 15A and the second preliminary compartment 15B is decompressed. The insulating gas is recovered from the first terminal cover 40A and the second terminal cover 40B, and both are removed. Since the first preliminary section 15A and the second preliminary section 15B are decompressed, an excessive differential pressure does not act on the insulating spacers 16A and 16B.
　第１端末カバー４０Ａおよび第２端末カバー４０Ｂの取り外しにより、線路側端末４２が露出する。第１断路器１０Ａおよび第２断路器１０Ｂが開路されているので、線路側端末４２は強制的に接地電位に落とすことができる。線路側端末４２に対して、既設回線Ｅと同様に、遮断器９０および線路側ユニット９２が接続される。
　以上により、新設回線Ｎの増設が完了する。 By removing the first terminal cover 40A and the second terminal cover 40B, the track side terminal 42 is exposed. Since the first disconnecting switch 10A and the second disconnecting switch 10B are opened, the line-side terminal 42 can be forcibly dropped to the ground potential. A circuit breaker 90 and a line-side unit 92 are connected to the line-side terminal 42 in the same manner as the existing line E.
As described above, the addition of the new line N is completed.
　以上に詳述されたように、第２の実施形態のガス絶縁開閉装置１では、第１断路器１０Ａが、第１端末カバー４０Ａ側の端部に、絶縁スペーサ１４Ａで仕切られた第１予備区画１５Ａを有する。第２断路器１０Ｂが、第２端末カバー４０Ｂ側の端部に、絶縁スペーサ１４Ｂで仕切られた第２予備区画１５Ｂを有する。
　この構成によれば、複母線Ａ，Ｂおよび既設回線Ｅの通電を継続した状態で、新設回線Ｎの増設作業が実施される。したがって、回線の増設作業時に母線および回線の停止範囲を抑制または解消することができる。 As described in detail above, in the gas-insulated switchgear 1 of the second embodiment, the first disconnecting switch 10A has the first preliminary section 15A partitioned by the insulating spacer 14A at the end on the first terminal cover 40A side. The second disconnecting switch 10B has a second preliminary compartment 15B partitioned by an insulating spacer 14B at the end on the second terminal cover 40B side.
According to this configuration, the expansion work of the new line N is carried out while the double buses A and B and the existing line E continue to be energized. Therefore, it is possible to suppress or eliminate the stoppage range of the busbar and the line at the time of line extension work.
　前述された第２の実施形態では、第１断路器１０Ａの線路側が第１端末カバー４０Ａに接続され、第２断路器１０Ｂの線路側が第２端末カバー４０Ｂに接続される。これに対して、第１断路器１０Ａおよび第２断路器１０Ｂの線路側が、１個の同じ端末カバーに接続されてもよい。これにより、端末カバーの増加が抑制される。 In the second embodiment described above, the line side of the first disconnecting switch 10A is connected to the first terminal cover 40A, and the line side of the second disconnecting switch 10B is connected to the second terminal cover 40B. On the other hand, the line sides of the first disconnecting switch 10A and the second disconnecting switch 10B may be connected to one and the same terminal cover. This suppresses an increase in terminal cover.
　以上説明した少なくともひとつの実施形態によれば、相互に前記絶縁ガスが区画された複数の断路器１０Ａ，１０Ｂおよび端末カバー４０を持つ。これにより、回線の増設作業時に母線および回線の停止範囲を抑制することができる。 According to at least one embodiment described above, there are a plurality of disconnectors 10A and 10B and terminal covers 40 in which the insulating gas is separated from each other. As a result, it is possible to suppress the stopping range of the busbar and the line when the line is added.
　本発明のいくつかの実施形態を説明したが、これらの実施形態は、例として提示したものであり、発明の範囲を限定することは意図していない。これら実施形態は、その他の様々な形態で実施されることが可能であり、発明の要旨を逸脱しない範囲で、種々の省略、置き換え、変更を行うことができる。これら実施形態やその変形は、発明の範囲や要旨に含まれると同様に、特許請求の範囲に記載された発明とその均等の範囲に含まれるものである。 Although several embodiments of the invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, as well as the scope of the invention described in the claims and equivalents thereof.
　Ａ…第１母線、Ｂ…第２母線、１…ガス絶縁開閉装置、１０…母線側断路器・接地開閉器ユニット、１０Ａ…第１断路器、１０Ｂ…第２断路器、１４Ａ、１４Ｂ…絶縁スペーサ、１５Ａ…第１予備区画、１５Ｂ…第２予備区画、２０…接地開閉器、４０…端末カバー、４０Ａ…第１端末カバー（端末カバー）、４０Ｂ…第２端末カバー（端末カバー）。 A... First bus bar, B... Second bus bar, 1... Gas insulated switchgear, 10... Bus side disconnector/grounding switch unit, 10A... First disconnecting switch, 10B... Second disconnecting switch, 14A, 14B... Insulating spacer, 15A... First spare compartment, 15B... Second spare compartment, 20... Earthing switch, 40... Terminal cover, 40A... First terminal cover (terminal cover), 40B... Second terminal cover ( terminal cover).

Claims (3)

  1. 　複数の母線と、
    　前記複数の母線に接続され、内部に絶縁ガスが封入された母線側断路器・接地開閉器ユニットと、を有し、
    　前記母線側断路器・接地開閉器ユニットは、前記複数の母線にそれぞれ接続された複数の断路器と、端末カバーと、を有し、
    　前記複数の断路器および前記端末カバーは、相互に異なる前記絶縁ガスの区画に分離され、
    　前記複数の母線は、第１母線および第２母線を有し、
    　前記複数の断路器は、前記第１母線に接続された第１断路器と、前記第２母線に接続された第２断路器と、を有し、
    　前記母線側断路器・接地開閉器ユニットは、前記第１断路器および前記第２断路器と前記端末カバーとの間に接続され、前記第１断路器および前記第２断路器並びに前記端末カバーとは異なる前記絶縁ガスの区画に分離された接地開閉器を有する、
    　ガス絶縁開閉装置。     a plurality of busbars;
    a busbar-side disconnecting switch/earth switch unit connected to the plurality of busbars and filled with an insulating gas therein;
    The bus-side disconnector/earth switch unit has a plurality of disconnectors connected to the plurality of busbars, respectively, and a terminal cover,
    the plurality of disconnectors and the terminal covers are separated into different compartments of the insulating gas;
    The plurality of busbars have a first busbar and a second busbar,
    The plurality of disconnecting switches have a first disconnecting switch connected to the first bus and a second disconnecting switch connected to the second bus,
    The bus-side disconnecting switch/earthing switch unit is connected between the first disconnecting switch and the second disconnecting switch and the terminal cover, and has an earthing switch separated into a compartment of the insulating gas different from the first disconnecting switch, the second disconnecting switch, and the terminal cover.
    Gas insulated switchgear.
  2. 　複数の母線と、
    　前記複数の母線に接続され、内部に絶縁ガスが封入された母線側断路器・接地開閉器ユニットと、を有し、
    　前記母線側断路器・接地開閉器ユニットは、前記複数の母線にそれぞれ接続された複数の断路器と、端末カバーと、を有し、
    　前記複数の断路器および前記端末カバーは、相互に異なる前記絶縁ガスの区画に分離され、
    　前記複数の母線は、第１母線および第２母線を有し、
    　前記複数の断路器は、前記第１母線に接続された第１断路器と、前記第２母線に接続された第２断路器と、を有し、
    　前記第１断路器は、前記端末カバー側の端部に、絶縁スペーサで仕切られた第１予備区画を有し、
    　前記第２断路器は、前記端末カバー側の端部に、絶縁スペーサで仕切られた第２予備区画を有する、
    　ガス絶縁開閉装置。     a plurality of busbars;
    a busbar-side disconnecting switch/earth switch unit connected to the plurality of busbars and filled with an insulating gas therein;
    The bus-side disconnector/earth switch unit has a plurality of disconnectors connected to the plurality of busbars, respectively, and a terminal cover,
    the plurality of disconnectors and the terminal covers are separated into different compartments of the insulating gas;
    The plurality of busbars have a first busbar and a second busbar,
    The plurality of disconnecting switches have a first disconnecting switch connected to the first bus and a second disconnecting switch connected to the second bus,
    The first disconnector has a first preliminary section partitioned by an insulating spacer at the end on the terminal cover side,
    The second disconnector has a second preliminary section partitioned by an insulating spacer at the end on the terminal cover side,
    Gas insulated switchgear.
  3. 　前記第２断路器は、接地開閉器を含む、
    　請求項２に記載のガス絶縁開閉装置。     The second disconnector includes a grounding switch,
    The gas insulated switchgear according to claim 2.
PCT/JP2022/001581 2022-01-18 2022-01-18 Gas-insulated switchgear WO2023139642A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530617A (en) * 1991-07-23 1993-02-05 Mitsubishi Electric Corp Gas insulated switchgear
JP2000139008A (en) * 1998-10-30 2000-05-16 Hitachi Ltd Gas insulated switchgear
JP2012105389A (en) * 2010-11-08 2012-05-31 Japan Ae Power Systems Corp Gas-insulation switchgear and updating method thereof
CN106129887A (en) * 2016-06-29 2016-11-16 河南平芝高压开关有限公司 GIS prepared separation, outside line enlargement method and GIS device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0530617A (en) * 1991-07-23 1993-02-05 Mitsubishi Electric Corp Gas insulated switchgear
JP2000139008A (en) * 1998-10-30 2000-05-16 Hitachi Ltd Gas insulated switchgear
JP2012105389A (en) * 2010-11-08 2012-05-31 Japan Ae Power Systems Corp Gas-insulation switchgear and updating method thereof
CN106129887A (en) * 2016-06-29 2016-11-16 河南平芝高压开关有限公司 GIS prepared separation, outside line enlargement method and GIS device

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