JP2007259681A - Gas insulated switchgear - Google Patents

Gas insulated switchgear Download PDF

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JP2007259681A
JP2007259681A JP2006084814A JP2006084814A JP2007259681A JP 2007259681 A JP2007259681 A JP 2007259681A JP 2006084814 A JP2006084814 A JP 2006084814A JP 2006084814 A JP2006084814 A JP 2006084814A JP 2007259681 A JP2007259681 A JP 2007259681A
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line
bus
buses
main
inter
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JP4686392B2 (en
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Reiji Obara
礼二 小原
Hiroshi Ikeshita
寛 池下
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Toshiba Corp
Toshiba Plant Systems and Services Corp
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Toshiba Corp
Toshiba Plant Systems and Services Corp
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Priority to KR1020070028975A priority patent/KR100869006B1/en
Priority to CN2007100884252A priority patent/CN101047304B/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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
    • H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Gas-Insulated Switchgears (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a GIS of efficient arrangement of equipment and busbars, with a reduced installation area, shortened bus bar length, and improved efficiency in maintenance and recovery of a circuit breaker. <P>SOLUTION: The gas insulated switchgear is constituted with single-phase equipment of in-circuit connection bus bars 2A and 2B, leading-out bus bar 4, vertical circuit breakers 1A-1F, and inter-circuit connection main busbars 3A and 3B. The in-circuit connection bus bar, leading-out busbar, and inter-circuit connection main busbar are arranged parallel to each other in the same plane using the busbar of the amount of three phases. The in-circuit connection bus bars 2A and 2B and inter-circuit connection main busbars 3A and 3B are so arranged that the main axis of the busbar in each phase almost overlaps each other in the same direction in top view, while the in-circuit connection busbar and inter-circuit connection main busbar overlap each other vertically. The leading-out busbar 4 is so arranged as to vertically overlap in the direction across the main axis direction of the in-circuit connection busbars 2A and 2B and the inter-circuit connection main busbars 3A and 3B. The vertical circuit breakers 1A-1F are so arranged, on the side of the in-circuit connection busbar and inter-circuit connection main busbar, that the array direction is parallel to the main axis direction of the in-circuit connection busbar and inter-circuit connection main bus bar. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、１−１／２遮断器方式のレイアウト構成を有するガス絶縁開閉装置に関するものである。   The present invention relates to a gas-insulated switchgear having a layout configuration of a 1-1 / 2 circuit breaker system.

一般にガス絶縁開閉装置（以降ＧＩＳと略す）を適用した電気所において、１−１／２遮断器方式のレイアウト構成を行う場合、図５に示すように、１回線あたり３台の遮断器１Ａ〜１Ｃまたは１Ｄ〜１Ｆを回線内接続主母線２Ａ，２Ｂの同一軸上に直列に配置している。   In general, in an electric station to which a gas-insulated switchgear (hereinafter abbreviated as GIS) is applied, when performing a layout configuration of a 1-1 / 2 circuit breaker system, as shown in FIG. 1C or 1D to 1F are arranged in series on the same axis of in-line main buses 2A and 2B.

回線内接続主母線２Ａ，２Ｂの同一軸上に３台の遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆを配置した回線６，７は送電線回線や変圧器回線などの引き出し回線８に対し平面上平行となるように配置し、各回線６及び７間は各々の平面上並列になるように配置している。   Lines 6 and 7 in which three circuit breakers 1A to 1C and 1D to 1F are arranged on the same axis of the main buses 2A and 2B in the line are parallel to the drawing line 8 such as a transmission line or a transformer line on a plane. The lines 6 and 7 are arranged in parallel on each plane.

各回線６及び７間は、任意の回線間接続主母線３Ａ，３Ｂとの接続・切り離しが可能となるような主母線切り替え用断路器５を介して、各回線６及び７の端部を主母線３によって接続されている。   Between the lines 6 and 7, the ends of the lines 6 and 7 are connected to each other via a main bus switching disconnector 5 that can be connected to or disconnected from any main line connecting main buses 3A and 3B. Connected by bus 3.

送電線回線や変圧器回線などの引き出し回線を構成する引き出し回線母線４は、遮断器の保守・改修作業の邪魔とならないように、ガス遮断器１Ａ〜１Ｃまたは１Ｄ〜１Ｆを避けるよう回線６と回線７の間に、回線６を構成する遮断器１Ａと１Ｂあるいは遮断器１Ｂと１Ｃの間または回線７を構成する遮断器１Ｄと１Ｅあるいは遮断器１Ｅと１Ｆの間に、分岐を設けて、各回線６，７から引き出している。   The lead-out line bus 4 constituting the lead-out line such as a power transmission line or a transformer line is connected to the line 6 so as to avoid the gas circuit breakers 1A to 1C or 1D to 1F so as not to obstruct maintenance / repair work of the circuit breaker. A branch is provided between the circuit breakers 1A and 1B constituting the line 6 or between the circuit breakers 1B and 1C, or between the circuit breakers 1D and 1E constituting the line 7 or between the circuit breakers 1E and 1F. It is drawn from each line 6 and 7.

なお、図５では簡潔に説明するため、ＧＩＳ構成要素のうち、説明に必要な遮断器、断路器、母線のみを示し接地開閉器、計器用変成器、計器用変流器、避雷器などは記載から省略している。   For the sake of brevity in FIG. 5, among the GIS components, only the circuit breaker, disconnector, and busbar necessary for explanation are shown, and the earthing switch, instrument transformer, instrument current transformer, lightning arrester, etc. are described. Is omitted.

上述のような１−１／２遮断器方式のＧＩＳレイアウトを適用する場合、各回線６，７の遮断器１Ａ〜１Ｃまたは１Ｄ〜１Ｆを同一軸上に配置し、また各回線６，７を並列に配置するため、１回線あたりの奥行き（幅）が長くなり、据付けに必要なスペースを増長させる要因の一つとなっていた。また、屋内型ＧＩＳの場合幅の広い建屋が必要となっていた。   When applying the GIS layout of the 1-1 / 2 circuit breaker system as described above, the circuit breakers 1A to 1C or 1D to 1F of the lines 6 and 7 are arranged on the same axis, and the lines 6 and 7 are connected to each other. Since they are arranged in parallel, the depth (width) per line is increased, which is one of the factors that increase the space required for installation. In the case of indoor type GIS, a wide building is required.

送電線回線や変圧器回線等の引出し回線の引き出し母線４は、各回線６，７の遮断器上部の保守スペースを避け配置することが必要であり、遮断器上部に配置することが不可能であるため、各回線６，７間に配置せざるを得ない。その結果、回線引き出し母線４の配置のために回線間スペースを大きく取らざるを得ず、これも据付けに必要なスペースを増長させる要因の一つとなっており、さらに回線６，７間の接続用主母線３Ａ，３Ｂが長くなり経済性の観点から不利となっていた。   The lead-out bus 4 of the lead-out line such as a transmission line or transformer line needs to be arranged avoiding the maintenance space above the circuit breakers of the lines 6 and 7, and cannot be arranged above the circuit breakers. Therefore, it must be arranged between the lines 6 and 7. As a result, a large space between the lines is required for the arrangement of the line lead-out bus 4, which is one of the factors that increase the space required for installation. The main buses 3A and 3B are long and disadvantageous from the viewpoint of economy.

更に、各回線６，７は送電線回線や変圧器引出し回線４の引き出しに方向に対し平行に配置されているため、引き出し回線用母線４を９０度の角度に方向転換する必要があり、多くの引き出し母線構成ユニットを必要とした。   Further, since the lines 6 and 7 are arranged in parallel to the direction of the transmission line line and the lead of the transformer lead line 4, it is necessary to change the direction of the lead line bus 4 to an angle of 90 degrees. Required a drawer busbar configuration unit.

上述のように従来のレイアウトではＧＩＳ据付けのために大きなスペースを確保せねばならず、増長な据付けスペース、増長な回線間接続主母線が必要となる等、経済性の面から不利となっていた。   As described above, in the conventional layout, a large space has to be secured for installing the GIS, and it is disadvantageous in terms of economy, such as an increased installation space and an increased inter-line connection main bus. .

さらに各回線６，７に配置される遮断器に保守・改修等で回線からの引出しが必要となった場合、直接遮断器を回線から引き出すことができず、隣接する機器を分解してから引き出す必要があり、点検・改修のための作業効率が悪いものとなっていた。   In addition, when the circuit breakers placed on the lines 6 and 7 need to be pulled out of the line due to maintenance, repairs, etc., the breaker cannot be pulled out of the line directly, and the adjacent equipment is disassembled and pulled out. It was necessary, and work efficiency for inspection and repair was poor.

このような観点から、特許文献１には、１−１／２遮断器方式のガス絶縁開閉装置において、回線間接続主母線を水平に配置し、この主母線の長手方向に縦型遮断器を併置することにより、据え付け面積の縮小を図った発明が記載されている。しかしながら、特許文献１に記載の発明は、次のような解決すべき課題を有するものであって、実用性に優れたものではなかった。
特開昭５８−００６０１３号公報 From this point of view, Patent Document 1 discloses that in the 1-1 / 2 circuit breaker type gas insulated switchgear, the line connecting main buses are arranged horizontally and a vertical circuit breaker is provided in the longitudinal direction of the main bus bars. An invention is described in which the installation area is reduced by juxtaposition. However, the invention described in Patent Document 1 has the following problems to be solved and is not excellent in practicality.
JP 58-006013 A

変電所の構成には単母線方式、複母線方式、１−１／２遮断器方式などがある。経済性の比較はおおよそ１回線当たり１：１．２：１．５の割合となる。これは構成機器の中で最も高価な遮断器が、１−１／２遮断器方式の場合、２回線当たり３台使用されているためである。このため１−１／２遮断器方式の変電所は、建設コストの関係から重要度の高い変電所、すなわち高電圧、大容量変電所の構成として主に用いられてきた。   Substation configurations include single bus systems, multiple bus systems, and 1-1 / 2 circuit breaker systems. The economic comparison is approximately 1: 1.2: 1.5 per line. This is because three of the most expensive circuit breakers among the component devices are used for two lines in the case of the 1-1 / 2 circuit breaker system. For this reason, the 1/1/2 circuit breaker type substation has been mainly used as a construction of a highly important substation, that is, a high voltage, large capacity substation because of the construction cost.

一方、ＧＩＳをタンク構造からみた特徴は、低電圧から高電圧になるに従い、三相器から単相器となる傾向がある。一般的に三相器はＧＩＳの縮小化、経済性のために採用されてきたが、同一タンク内に三相電圧機器を収納するため電界ストレスが厳しくなり、高電圧化するとタンクサイズが増大したり絶縁支持物が大型化するなど技術的な難しさが加わり、全体的に経済性の面を圧迫するからである。   On the other hand, the characteristics of the GIS viewed from the tank structure tend to change from a three-phase device to a single-phase device as the voltage increases from a low voltage. In general, three-phase devices have been adopted for GIS size reduction and economic efficiency, but because the three-phase voltage equipment is housed in the same tank, the electric field stress becomes severe, and the tank size increases as the voltage increases. This is because technical difficulties such as increasing the size of the insulating support are added and the overall economy is under pressure.

また、万が一の事故時には影響範囲が三相共に及ぶことから、復旧時間や復旧コストが増大し、長時間停電が許されない重要変電所では単相化の要望が強い。いいかえれば高電圧、大容量変電所では単相器が一般的に採用されているということである。ちなみに世界的に見ても電圧１４５ｋＶクラス以下のＧＩＳでは三相器が主流であるが、４２０ｋＶ以上では逆にほとんどが単相器となっている。   Also, in the unlikely event of an accident, the impact range extends to all three phases, so the recovery time and cost will increase, and there is a strong demand for a single phase at important substations where long-time power outages are not allowed. In other words, high-voltage, large-capacity substations generally use single-phase devices. By the way, in the world, three-phase devices are mainstream in GIS with a voltage of 145 kV or less, but most of them are single-phase devices at 420 kV or more.

このように１−１／２遮断器方式の変電所は建設コストが割高であるにもかかわらず、高電圧、大容量の非常に重要な変電所に採用され、またそこに用いられるＧＩＳは単相器が多い。   In this way, even though the construction cost of the 1-1 / 2 circuit breaker system is high, it is used in very important substations with high voltage and large capacity, and the GIS used there is only one. There are many phasers.

このような技術的背景のもとで前記特許文献１の発明をみると、この特許文献１の発明は主母線が三相器となっている。したがって、特許文献１の発明において、主母線１，２を単相母線で構成したと仮定すると、垂直方向に３本の母線を配置するか、水平に３本の母線を配置するかのいずれかまたはこの両者の組み合わせとなる。   Looking at the invention of Patent Document 1 under such a technical background, the main bus line of the invention of Patent Document 1 is a three-phase device. Therefore, in the invention of Patent Document 1, if it is assumed that the main buses 1 and 2 are configured by single-phase buses, either three buses are arranged in the vertical direction or three buses are arranged horizontally. Or a combination of both.

しかし、垂直３本配置の場合はその幅寸法は増大しないが、実際には、遮断器から降りてくる取り合い母線が２相目、３相目の母線と干渉が起こり接続できない。このため水平配置となるが、主母線の単相母線それぞれ３本、合計６本が横に並びその幅寸法が大幅に伸びることとなる。   However, in the case of the three vertical arrangements, the width dimension does not increase. However, in actuality, the connecting bus descending from the circuit breaker interferes with the second and third phase buses and cannot be connected. For this reason, although it becomes horizontal arrangement | positioning, each of the single-phase bus | bath of a main bus line is 3 in total, a total of 6 will be located side by side, and the width dimension will extend significantly.

この点は、接続用母線も同様であって、遮断器からの取り合い母線が水平に出てくるため接続母線の単相母線は垂直配置とならざるを得ない。こうなると高さ方向にも大幅に伸びることになる。これではこの提案が解決しようとしている縮小化効果に程遠いものとなってしまう。   This is the same for the connecting bus. Since the connecting bus from the circuit breaker comes out horizontally, the single-phase bus of the connecting bus must be arranged vertically. If this happens, it will extend significantly in the height direction. This is far from the reduction effect that this proposal is trying to solve.

本発明は、前記のような従来技術の問題点を解決するために提案されたものであって、その目的は、遮断器を回線間接続主母線に対向して配置し、各回線を同一軸上に配置することで、効率的な機器・母線配置のＧＩＳを提供し、敷地面積の縮小や、母線長の短縮化をはかり、遮断器の保守・回収効率を高めることにある。   The present invention has been proposed in order to solve the above-described problems of the prior art, and the object thereof is to arrange a circuit breaker facing the main line between lines and connect each line to the same axis. By arranging it above, it is intended to provide efficient equipment / bus arrangement GIS, reduce the site area and shorten the bus length, and improve the maintenance / recovery efficiency of the circuit breaker.

前記の目的を達成するために、本発明のガス絶縁開閉装置は、回線間接続主母線を介して接続された第１と第２の回線を備え、第１と第２の回線のそれぞれには、第１、第２及び第３の遮断器が第１及び第２の回線内接続母線を介して電気的に直列接続され、第１及び第３の遮断器はその一端が回線間接続主母線に接続され、また第１の回線内接続母線における第１の遮断器と第２の遮断器の間及び第２の回線内接続母線における第２と第３の遮断器の間から引き出し回線が導出されている１−１／２遮断器方式のガス絶縁開閉装置において、第１と第２の回線内接続母線、引き出し母線、各遮断器及び回線間接続主母線をそれぞれ単相機器によって構成し、かつ第１と第２の回線内接続母線、引き出し母線及び回線間接続主母線については、それぞれ３相分の母線を同一平面上において平行に配設し、第１と第２の回線内接続母線及び回線間接続主母線については、各相の母線の主軸が同一方向にしかも平面的に略重なるように、かつ、第１と第２の回線内接続母線及び回線間接続主母線が上下に重なり合うように配置し、前記引き出し母線を、第１と第２の回線内接続母線及び回線間接続主母線の主軸方向と交差する方向に、かつ第１と第２の回線内接続母線及び回線間接続主母線と上下に重なり合うように配置し、前記各回線の第１乃至第３の遮断器を上下の口出しを備えた縦型遮断器によって構成し、これら第１乃至第３の縦型遮断器を前記第１と第２の回線内接続母線及び回線間接続主母線の側方に、その配列方向が前記第１と第２の回線内接続母線及び回線間接続主母線の主軸の方向と平行になるように配置したことを特徴とする。   In order to achieve the above object, a gas insulated switchgear according to the present invention includes first and second lines connected via an interline connecting main bus, and each of the first and second lines is provided with each of the first and second lines. The first, second, and third circuit breakers are electrically connected in series via the first and second in-line connection buses, and one end of each of the first and third circuit breakers is connected to the main line between lines. And a lead-out line is derived from between the first circuit breaker and the second circuit breaker in the first in-line connection bus and between the second and third circuit breakers in the second in-line connection bus. In the 1-1 / 2 circuit breaker type gas insulated switchgear, the first and second in-line connecting buses, lead-out buses, each circuit breaker and inter-line connecting main buses are configured by single-phase devices, respectively. And for the first and second in-line connection buses, lead-out buses, and inter-line connection main buses The buses for three phases are arranged in parallel on the same plane, and the first and second in-line connecting buses and the inter-line connecting main buses are arranged in the same direction and in the same direction as the main axis of each phase bus. The first and second in-line connection buses and the inter-line connection main buses are arranged so as to overlap each other, and the lead-out bus is connected between the first and second in-line connection buses and the line. The first to third circuit breakers of the respective lines are arranged in a direction intersecting with the main axis direction of the connection main bus and so as to overlap vertically with the first and second in-line connection buses and the inter-line connection main bus. Are constituted by vertical circuit breakers having upper and lower outlets, and these first to third vertical circuit breakers are arranged on the sides of the first and second in-line connecting buses and the inter-line connecting main buses. Arrangement direction is the first and second in-line connection buses and inter-line connection main buses Characterized in that the arranged such that the parallel to the direction of the main shaft.

前記のような構成を有する本発明のガス絶縁開閉装置では、第１と第２の回線内接続母線、引き出し母線、各遮断器及び回線間接続主母線をそれぞれ単相機器によって構成すると共に、各回線の第１乃至第３の遮断器を縦型遮断器とすることにより、各母線の積層配置が可能となる。   In the gas insulated switchgear of the present invention having the above-described configuration, each of the first and second in-line connecting buses, the lead-out buses, each circuit breaker, and the inter-line connecting main buses is constituted by a single-phase device, By using the first to third circuit breakers of the circuit as vertical circuit breakers, it is possible to stack each bus bar.

本発明によれば、主母線群を積層配置することにより、装置全体の奥行き（幅）寸法の縮小が可能となる。また、主母線群や遮断器として単相機器を使用したので、３相一括型の機器を前提とした特許文献１の装置に比較して、装置全体の小型化という利点を確保しつつ、高電圧化及び保守・点検作業の容易化を達成できる。   According to the present invention, it is possible to reduce the depth (width) dimension of the entire apparatus by arranging the main bus groups in a stacked manner. In addition, since a single-phase device is used as the main bus group and the circuit breaker, the advantage of downsizing the entire device is ensured as compared with the device of Patent Document 1 that presupposes a three-phase collective type device. Voltageization and easy maintenance and inspection work can be achieved.

以下、本発明の第１実施形態を図１乃至図４に従って具体的に説明する。即ち、図１は本実施形態の平面図、図２はその正面図、図３は縦型遮断器部分の側面図、図４は単線結線図である。なお、図５に示した従来のガス絶縁開閉装置と同一の部材については、同一の符号を付して説明する。   Hereinafter, a first embodiment of the present invention will be described in detail with reference to FIGS. 1 is a plan view of this embodiment, FIG. 2 is a front view thereof, FIG. 3 is a side view of a vertical circuit breaker portion, and FIG. 4 is a single-line connection diagram. The same members as those in the conventional gas insulated switchgear shown in FIG.

（１）実施形態の構成
図１に示すように、第１と第２の回線６，７は、それぞれ平行に配置された３本の単相の回線内接続母線２Ａ，２Ｂによって構成されている。ここで、回線内接続母線２Ａ，２Ｂは、図２の正面図に示すように、回線内接続母線２Ａが縦型遮断器の上部口出し部分と一致する高さに、回線内接続母線２Ｂが縦型遮断器の下部口出し部分と一致する高さに配置されている。また、第１の回線６の回線内接続母線２Ａ，２Ｂと、第２の回線７の回線内接続母線２Ａ，２Ｂは、同一軸上に配置されている。 (1) Configuration of Embodiment As shown in FIG. 1, the first and second lines 6 and 7 are each constituted by three single-phase in-line connecting buses 2A and 2B arranged in parallel. . Here, as shown in the front view of FIG. 2, the in-line connecting buses 2A and 2B are arranged at a height where the in-line connecting bus 2A coincides with the upper lead-out portion of the vertical circuit breaker. It is arranged at a height that coincides with the lower opening portion of the mold circuit breaker. The in-line connection buses 2A and 2B of the first line 6 and the in-line connection buses 2A and 2B of the second line 7 are arranged on the same axis.

第１と第２の回線６，７を接続する回線間接続主母線３Ａ，３Ｂは、平行に配置された３本の単相母線から構成され、図２に示すように、第１の回線間接続主母線３Ａは、引き出し母線４の上方に、第２の回線間接続主母線３Ｂは回線内接続母線２Ｂの下方に、回線内接続母線２Ａ，２Ｂと平行に（第１と第２の回線６，７の長さ方向と平行に）配置されている。なお、図１の平面図では、回線内接続母線２Ｂまでを図示しており、回線間接続主母線３Ａ，３Ｂは示されていない。   The inter-line connection main buses 3A and 3B connecting the first and second lines 6 and 7 are composed of three single-phase buses arranged in parallel. As shown in FIG. The connection main bus 3A is above the lead-out bus 4, the second inter-line connection main bus 3B is below the in-line connection bus 2B, parallel to the in-line connection buses 2A and 2B (first and second lines). 6 and 7 in parallel with the length direction). In the plan view of FIG. 1, only the in-line connection bus 2B is shown, and the inter-line connection main buses 3A and 3B are not shown.

第１と第２の回線６，７における回線内接続母線２Ａ，２Ｂの長さ方向ほぼ中央部からは、回線内接続母線２Ａ，２Ｂと直角に単相母線からなる３本の引き出し回線４がそれぞれ引き出されている。このうち、図２の上方に配置されている回線内接続母線２Ａからは、回線内接続母線２Ａの上部に設けた口出し部に対して水平に引き出し回線４が接続されている。また、下方に配置された回線内接続母線２Ｂからは、その上部に垂直母線を配置し、この垂直母線の上部口出し部に引き出し母線４が接続させている。その結果、回線内接続母線２Ａ，２Ｂから引き出された２組の引き出し母線４は、同じ高さで、平行に配置される。   From the central portion in the length direction of the in-line connection buses 2A and 2B in the first and second lines 6 and 7, three lead lines 4 made of single-phase buses are perpendicular to the in-line connection buses 2A and 2B. Each is pulled out. Among these, from the in-line connection bus 2A arranged in the upper part of FIG. 2, a lead-out line 4 is connected horizontally to the lead portion provided on the upper part of the in-line connection bus 2A. Further, from the in-line connecting bus 2B arranged below, a vertical bus is arranged at the upper part, and the lead-out bus 4 is connected to the upper lead portion of this vertical bus. As a result, the two sets of lead-out buses 4 drawn from the in-line connection buses 2A and 2B are arranged in parallel at the same height.

第１と第２の回線６，７には、それぞれ第１から第３の縦型遮断器１Ａ〜１Ｃと１Ｄ〜１Ｆが設けられている。これらの縦型遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆは、図３の側面図に示すように、いずれも単相の型の遮断器であって、その上部口出し部が上方の回線内接続母線２Ａに対応し、下部口出し部が下方の回線内接続母線２Ｂに対応する位置に設けられている。   First to third vertical circuit breakers 1A to 1C and 1D to 1F are provided on the first and second lines 6 and 7, respectively. These vertical type circuit breakers 1A to 1C and 1D to 1F are all single-phase type circuit breakers as shown in the side view of FIG. The lower lead-out portion is provided at a position corresponding to the lower in-line connection bus 2B.

各縦型遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆの接続構成は次の通りである。
まず、第１の回線６においては、遮断器１Ａの上部口出しと遮断器１Ｂの上部口出しを回線内接続母線２Ａに主母線と接続・切り離しが可能となるような主母線切り替え用断路器５を介して接続し、遮断器１Ｂの下部口出し９と遮断器１Ｃの下部口出し９を回線内接続母線２Ａに対して主母線切り替え用断路器５を介して接続し、回線内の母線の接続を行う。 The connection configuration of each of the vertical circuit breakers 1A to 1C and 1D to 1F is as follows.
First, in the first line 6, the main bus switching disconnector 5 is provided so that the upper lead of the circuit breaker 1A and the upper lead of the circuit breaker 1B can be connected to and disconnected from the main bus to the in-line connecting bus 2A. The lower lead 9 of the circuit breaker 1B and the lower lead 9 of the circuit breaker 1C are connected to the in-line connecting bus 2A via the main bus switching disconnector 5 to connect the bus in the line. .

第１の回線６の遮断器１Ａの下部口出しと第２の回線７の遮断器１Ｆの下部口出し９を回線間接続主母線３Ｂに主母線切り替え用断路器５を介し接続し、遮断器１Ｃの上部口出し９と隣接回線７の遮断器１Ｄの上部口出し９を主母線切り替え用断路器５を介して回線間接続主母線３Ａに接続し、回線６，７間の母線接続を行う。   The lower lead of the circuit breaker 1A of the first line 6 and the lower lead 9 of the breaker 1F of the second line 7 are connected to the inter-line connection main bus 3B via the main bus switching disconnector 5, and the circuit breaker 1C The upper lead 9 and the upper lead 9 of the circuit breaker 1D of the adjacent line 7 are connected to the inter-line connection main bus 3A via the main bus switching disconnector 5, and the buses 6 and 7 are connected.

なお、前記のように引き出し回線４は母線切り替え用断路器５に挟まれた回線内接続用母線２Ａから分岐をとり、隣接遮断器１と逆方向に回線間接続用母線３Ａ回線内接続母線２Ａとの間のスペースを用いて引き出し回線用母線４を引き出す。   As described above, the lead-out line 4 is branched from the in-line connecting bus 2A sandwiched between the bus switching disconnectors 5, and the inter-line connecting bus 3A in-line connecting bus 2A in the opposite direction to the adjacent circuit breaker 1. Lead-out bus 4 is pulled out using the space between the two.

更に、送電線に接続される引き出し母線４については、その端部に気中絶縁ブッシング１０を配置する。この場合、気中ブッシングの相配置（通常、Ａ相、Ｂ相、Ｃ相と呼ばれる）の三相のブッシング軸を結ぶ軸線が、主母線群の主軸と平面的に平行となるように配置する。そして、前記図１乃至図３で説明した各機器は、図４の単線結線図に示すようにして、電気的に接続されている。   Further, an air-insulating bushing 10 is disposed at the end of the lead-out bus 4 connected to the power transmission line. In this case, the axial line connecting the three-phase bushing axes in the phase arrangement of the air bushings (usually referred to as A phase, B phase, and C phase) is arranged so as to be parallel to the main axis of the main bus group. . The devices described in FIGS. 1 to 3 are electrically connected as shown in the single-line connection diagram of FIG.

（２）実施形態の作用
以上の通り、本実施形態においては、回線内接続母線２Ａ，２Ｂおよび回線間接続主母線３Ａ，３Ｂを挟んで縦型遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆを垂直に配置することで、縦型遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆを母線とは逆方向に他の機器を分解することなく引き出すことが可能となり、点検・改修範囲のための作業範囲を大幅に縮小することで、保守に必要な作業時間、費用を低減することが可能となる。 (2) Operation of the embodiment As described above, in the present embodiment, the vertical circuit breakers 1A to 1C and 1D to 1F are vertically arranged with the in-line connection buses 2A and 2B and the inter-line connection main buses 3A and 3B interposed therebetween. By arranging it, the vertical circuit breakers 1A to 1C and 1D to 1F can be pulled out without disassembling other devices in the direction opposite to the busbar, and the work range for inspection / repair range is greatly reduced. By doing so, it becomes possible to reduce the working time and cost required for maintenance.

また、隣接する各回線６，７を回線間接続母線３Ａ，３Ｂの同一軸線上に直列に配置することで、ＧＩＳ各回線の奥行き(幅)寸法が小さくなるため、その据付奥行き幅の縮小が可能となり、敷地取得費用やＧＩＳ建屋建設費用の低減が図れる。同時に各回線の奥行き(幅)が小さくなることで、引き出し回線用母線４を短縮することが可能となり、コストの低減が図られる。   Further, by arranging the adjacent lines 6 and 7 in series on the same axis of the inter-line connecting buses 3A and 3B, the depth (width) dimension of each GIS line is reduced, so that the installation depth width can be reduced. This will enable the site acquisition cost and GIS building construction cost to be reduced. At the same time, by reducing the depth (width) of each line, the lead-out line bus 4 can be shortened, and the cost can be reduced.

従来のレイアウトでは引き出し母線４のスペースを確保するために、各回線６，７間に長い回線間接続主母線を必要としたが、各回線６，７を引き出し母線４方向に対し垂直に配置し各縦型遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆ間から分岐をとることとしたことで、引き出し母線４を配置するためのスペースが不要となると共に遮断器を避けて配置する必要もなくなる。その結果、引き出し母線や回線間接続主母線長の短縮が可能となりコストの低減が図られる。また、引き出し母線４の角度変更も不要となり、引き出し母線構成ユニット数の低減にも寄与する。   In the conventional layout, in order to secure the space for the lead-out bus 4, a long inter-line connection main bus is required between the lines 6 and 7, but the lines 6 and 7 are arranged perpendicular to the direction of the lead-out bus 4. By branching from each of the vertical circuit breakers 1A to 1C and 1D to 1F, a space for arranging the lead-out bus 4 is not necessary, and it is not necessary to avoid the circuit breaker. As a result, it is possible to shorten the length of the lead-out bus and the connection main bus between lines, thereby reducing the cost. In addition, it is not necessary to change the angle of the lead-out bus 4, which contributes to a reduction in the number of lead-bar constituent units.

その上、本実施形態では、装置全体を単相母線構成とすると共に、回線内接続母線２Ａ，２Ｂ、回線間接続主母線３Ａ，３Ｂ及び引き出し母線４を上下４段に配置し、なかでも最下段と最上段に主母線３Ａ，３Ｂを配置し、中間に接続母線２Ａ、２Ｂを配置している。しかも、接続母線２Ａ，２Ｂそれぞれの三相を結ぶ軸線は、縦型遮断器１Ａ〜１Ｃ，１Ｄ〜１Ｆから出た水平取り合い母線の軸線とずらしている。   In addition, in the present embodiment, the entire apparatus has a single-phase bus configuration, and the in-line connection buses 2A and 2B, the inter-line connection main buses 3A and 3B, and the lead-out buses 4 are arranged in four upper and lower stages. Main buses 3A and 3B are arranged in the lower and upper stages, and connection buses 2A and 2B are arranged in the middle. Moreover, the axes connecting the three phases of the connecting buses 2A and 2B are shifted from the axes of the horizontal connecting buses extending from the vertical circuit breakers 1A to 1C and 1D to 1F.

こうすることによりすべての母線は立体交差が可能であり、しかも装置全体の奥行き（幅）寸法は単相母線３本分＋遮断器幅で構成できる。これに対して、特許文献１の発明では、三相母線２本＋遮断器幅であるが三相母線は単相母線に比べ径寸法は１．５〜２倍あることから、実質的には、本実施形態の装置は特許文献１の装置と比べても同等以下のものである。   By doing so, all the bus bars can be crossed, and the depth (width) dimension of the entire apparatus can be constituted by three single-phase bus lines + breaker width. On the other hand, in the invention of Patent Document 1, it is two three-phase buses + circuit breaker width, but the three-phase bus has a diameter of 1.5 to 2 times that of a single-phase bus, so substantially. The device of this embodiment is equivalent to or less than that of the device of Patent Document 1.

更に、超高圧変電所ではＧＩＳ列を挟んで一方が送電線側、もう一方が変圧器群で構成されることが多い。この点をも考慮し送電線側には気中絶縁ブッシング１０を配置し、反対側にも引き出し母線４を配置して変圧器等に接続できるようにしている。この場合、遮断器上部を引き出し母線４が通過するため遮断器の点検性が損なわれることに配慮して、遮断器は引き出し母線の反対側に配置している。よって、拡張性が高くしかもコンパクトなガス絶縁開閉装置を実現できる。   Furthermore, in ultra-high voltage substations, one is often composed of the transmission line side and the other is a transformer group across the GIS line. Considering this point, an air insulation bushing 10 is disposed on the power transmission line side, and a lead-out bus 4 is disposed on the opposite side so that it can be connected to a transformer or the like. In this case, the circuit breaker is arranged on the opposite side of the drawer bus in consideration that the inspection performance of the circuit breaker is impaired because the drawer bus 4 passes through the upper part of the circuit breaker. Therefore, it is possible to realize a gas insulated switchgear that is highly expandable and compact.

本発明のガス絶縁開閉装置の一実施の形態を示す平面図である。It is a top view which shows one Embodiment of the gas insulated switchgear of this invention. 図１のガス絶縁開閉装置の正面図である。It is a front view of the gas insulated switchgear of FIG. 図１のガス絶縁開閉装置の縦型遮断器部分の側面図である。It is a side view of the vertical circuit breaker part of the gas insulated switchgear of FIG. 図１のガス絶縁開閉装置の単線結線図である。FIG. 2 is a single line connection diagram of the gas insulated switchgear of FIG. 1. 従来のガス絶縁開閉装置の一例を示す平面図である。It is a top view which shows an example of the conventional gas insulated switchgear.

符号の説明Explanation of symbols

１…回線の遮断器
１Ａ…第１の回線の第１遮断器
１Ｂ…第１の回線の第２遮断器
１Ｃ…第１の回線の第３遮断器
１Ｄ…第２の回線の第１遮断器
１Ｅ…第２の回線の第２遮断器
１Ｆ…第２の回線の第３遮断器
２Ａ…回線内接続用主母線
２Ｂ…回線内接続用主母線
３Ａ…回線間接続主母線
３Ｂ…回線間接続主母線
４…引き出し回線母線
５…主母線断路器
６…第１の回線
７…第２の回線回線
８…引き出し回線
９…遮断器の口出し
１０…気中絶縁ブッシング DESCRIPTION OF SYMBOLS 1 ... Circuit breaker 1A ... 1st circuit breaker 1B ... 1st circuit 2nd circuit breaker 1C ... 1st circuit 3rd circuit breaker 1D ... 2nd circuit 1st circuit breaker 1E: Second circuit breaker 1F of second line 3rd circuit breaker 2A of second line ... Main bus 2B for in-line connection Main bus 3A for in-line connection Main line 3B for inter-line connection Main bus 3B ... Inter-line connection Main bus 4 ... Lead-out line bus 5 ... Main bus disconnector 6 ... First line 7 ... Second line 8 ... Lead-out line 9 ... Breaker outlet 10 ... Air insulation bushing

Claims (4)

回線間接続主母線を介して接続された第１と第２の回線を備え、第１と第２の回線のそれぞれには、第１、第２及び第３の遮断器が第１及び第２の回線内接続母線を介して電気的に直列接続され、第１及び第３の遮断器はその一端が回線間接続主母線に接続され、また第１の回線内接続母線における第１の遮断器と第２の遮断器の間及び第２の回線内接続母線における第２と第３の遮断器の間から引き出し回線が導出されている１−１／２遮断器方式のガス絶縁開閉装置において、
第１と第２の回線内接続母線、引き出し母線、各遮断器及び回線間接続主母線をそれぞれ単相機器によって構成し、かつ第１と第２の回線内接続母線、引き出し母線及び回線間接続主母線については、それぞれ３相分の母線を同一平面上において平行に配設し、
第１と第２の回線内接続母線及び回線間接続主母線については、各相の母線の主軸が同一方向にしかも平面的に略重なるように、かつ、第１と第２の回線内接続母線及び回線間接続主母線が上下に重なり合うように配置し、
前記引き出し母線を、第１と第２の回線内接続母線及び回線間接続主母線の主軸方向と交差する方向に、かつ第１と第２の回線内接続母線及び回線間接続主母線と上下に重なり合うように配置し、
前記各回線の第１乃至第３の遮断器を上下の口出しを備えた縦型遮断器によって構成し、これら第１乃至第３の縦型遮断器を前記第１と第２の回線内接続母線及び回線間接続主母線の側方に、その配列方向が前記第１と第２の回線内接続母線及び回線間接続主母線の主軸の方向と平行になるように配置したことを特徴とするガス絶縁開閉装置。 First and second lines connected via an inter-line connecting main bus, and first, second, and third circuit breakers are provided in each of the first and second lines. The first and third circuit breakers are electrically connected in series via the in-line connecting bus, and one end of each of the first and third circuit breakers is connected to the inter-line connecting main bus, and the first breaker in the first in-line connecting bus 1-1 / 2 circuit breaker type gas insulated switchgear in which a lead-out line is led out between the second and third circuit breakers and between the second and third circuit breakers in the second in-line connection bus,
The first and second in-line connection buses, lead-out buses, circuit breakers, and inter-line connection main buses are each constituted by a single-phase device, and the first and second in-line connection buses, lead-out buses and inter-line connections For the main busbars, the busbars for three phases are arranged in parallel on the same plane,
For the first and second in-line connection buses and the inter-line connection main buses, the first and second in-line connection buses are such that the main axes of the buses of each phase are in the same direction and substantially overlap in a plane. And arrange so that the main buses connecting the lines overlap each other,
The lead-out bus is arranged in a direction crossing the main axis direction of the first and second in-line connecting buses and the inter-line connecting main bus, and above and below the first and second in-line connecting buses and the inter-line connecting main bus. Arrange them so that they overlap,
The first to third circuit breakers of each line are constituted by vertical circuit breakers having upper and lower outlets, and these first to third vertical circuit breakers are connected to the first and second in-line connection buses. And a gas that is arranged on the side of the inter-line connecting main bus so that the arrangement direction thereof is parallel to the directions of the main axes of the first and second intra-line connecting buses and the inter-line connecting main bus. Insulated switchgear. 前記回線内接続母線に接続した引き出し母線の導出方向と回線内接続母線を挟んで反対位置に、前記第１乃至第３の縦型遮断器の少なくとも１つを配置したことを特徴とする請求項１記載のガス絶縁開閉装置。   The at least one of the first to third vertical circuit breakers is arranged at a position opposite to a direction in which a lead-out bus connected to the in-line connecting bus is led out and an in-line connecting bus is interposed therebetween. The gas insulated switchgear according to 1. 各相の引き出し母線の先端に気中絶縁ブッシングを接続し、この３相分の気中絶縁ブッシングのブッシング軸を結ぶ軸線が前記主母線群の主軸と平面的に平行となるように配置したことを特徴とする請求項１記載のガス絶縁開閉装置。   Air insulation bushings are connected to the leading ends of the lead buses for each phase, and the axis connecting the bushing axes of the air insulation bushings for the three phases is arranged so as to be parallel to the main axis of the main bus group. The gas insulated switchgear according to claim 1. 前記第１の回線においては、第１の遮断器の上部口出しと第２の遮断器の上部口出しを第１の回線内接続母線に接続し、第２の遮断器の下部口出しと第３遮断器の下部口出しを第１の回線内接続母線に対して接続し、
第１の回線の第１遮断器の下部口出しと第２の回線の第３の遮断器の下部口出しを回線間接続主母線に接続し、第１の回線の第３の遮断器の上部口出しと第２の回線の第１の遮断器の上部口出しを回線間接続主母線に接続したことを特徴とする請求項１記載のガス絶縁開閉装置。 In the first line, the upper lead of the first breaker and the upper lead of the second breaker are connected to the first in-line connection bus, the lower lead of the second breaker and the third breaker Connect the lower lead to the first in-line connection bus,
The lower lead of the first circuit breaker of the first line and the lower lead of the third circuit breaker of the second line are connected to the main connection line between the lines, and the upper lead of the third breaker of the first line 2. The gas insulated switchgear according to claim 1, wherein the upper lead of the first circuit breaker of the second line is connected to the inter-line connecting main bus.
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CN108390262A (en) * 2018-04-11 2018-08-10 中国电建集团福建省电力勘测设计院有限公司 The single-row arrangement GIS device of 220kV busbar extended types

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CN108390262A (en) * 2018-04-11 2018-08-10 中国电建集团福建省电力勘测设计院有限公司 The single-row arrangement GIS device of 220kV busbar extended types
CN108390262B (en) * 2018-04-11 2023-11-10 中国电建集团福建省电力勘测设计院有限公司 220kV bus lengthening type single-row arrangement GIS equipment

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