JP3507689B2 - Gas insulated electrical equipment - Google Patents
Gas insulated electrical equipmentInfo
- Publication number
- JP3507689B2 JP3507689B2 JP06340698A JP6340698A JP3507689B2 JP 3507689 B2 JP3507689 B2 JP 3507689B2 JP 06340698 A JP06340698 A JP 06340698A JP 6340698 A JP6340698 A JP 6340698A JP 3507689 B2 JP3507689 B2 JP 3507689B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- insulated
- filled
- switchgear
- pressure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/56—Gas reservoirs
- H01H2033/566—Avoiding the use of SF6
Landscapes
- Gas-Insulated Switchgears (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】この発明は開閉機器や導体が
密閉容器に収容され、絶縁ガスが充填されたガス絶縁電
気装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas-insulated electric device in which a switchgear and a conductor are housed in an airtight container and filled with an insulating gas.
【０００２】[0002]
【従来の技術】一般に遮断器、断路器等の開閉機器、変
成器等が密閉容器に収容され、絶縁ガスが充填されたガ
ス絶縁開閉機器、導体が密閉容器に収容され絶縁ガスが
充填されたガス絶縁送電路を接続して構成されるガス絶
縁電気装置は、各部に高純度のＳＦ６ガスが充填された
構成である。ガス絶縁電気装置に充填されたＳＦ６ガス
は優れた絶縁性能と消弧性能により、開閉装置等の電気
装置の小型化、高性能化に貢献し、充電部が大気中に露
出した従来形の構成に比較して大幅に縮小され、都心部
の狭隘な場所の変電所では、そのほとんどがガス絶縁電
気装置で構成されている。また、電力需要の増大に対応
して既設変電所の設置スペースを広げることなく高電
圧、大容量化する場合には、従来の充電部が大気中に露
出した構成の電気機器を撤去して、ガス絶縁電気装置で
構成して高電圧化、大容量化が実現されている。2. Description of the Related Art Generally, switching devices such as circuit breakers and disconnectors, transformers, etc. are housed in a hermetically sealed container, gas-insulated switching devices filled with insulating gas, and conductors are housed in a hermetically sealed container and filled with insulating gas. A gas-insulated electric device configured by connecting a gas-insulated power transmission line has a configuration in which high-purity SF 6 gas is filled in each part. The SF 6 gas filled in the gas-insulated electric device contributes to downsizing and higher performance of electric devices such as switchgear by its excellent insulation performance and arc extinguishing performance. The size of the substation is much smaller than that of the configuration, and most of the substations in narrow spaces in the center of the city consist of gas-insulated electric devices. In addition, in order to increase the voltage and capacity without expanding the installation space of the existing substation in response to the increase in electric power demand, the conventional charging unit should be removed from the electrical equipment that is exposed to the atmosphere. High voltage and large capacity have been realized by using gas-insulated electric equipment.
【０００３】ガス絶縁電気装置に使用されるＳＦ６ガス
は、規模が大きくなるほど大量に使用され、その使用量
は、ガス絶縁電気装置の構成により異なるが、数１００
０〜数１００００ｋｇにもおよぶものとなり、ＳＦ６ガ
スの価格も高いので、ガス絶縁電気機器として高価とな
る要因の一つとなっている。The SF 6 gas used in the gas-insulated electric device is used in a large amount as the scale increases, and the amount used varies depending on the configuration of the gas-insulated electric device.
Since it reaches 0 to several 10,000 kg and the price of SF 6 gas is high, it is one of the factors that make gas-insulated electrical equipment expensive.
【０００４】一方、大気中に放出される温室効果ガスに
よる地球温暖化問題があり、ガス絶縁電気機器に充填さ
れているＳＦ６ガスは、図６の｛ＩＰＣＣ・１９５５年
１２月・第１１回会合ＷＧＩ報告書の表１−４「ＣＯ２
の絶対ＧＷＰを基準とした主要温室効果ガスの地球温
暖化係数」｝（ＩＰＣＣ：Intergovernmental Panel o
n Climeite Change）に示されているように、ＳＦ６ガ
スは大気中に放出された場合の寿命が長く、地球温暖化
係数（積分期間）は二酸化炭素に比較して、非常に大き
な値となっており、ＳＦ６ガスが大気中に放出された場
合には、地球温暖化に影響する。On the other hand, there is a problem of global warming caused by greenhouse gases released into the atmosphere, and SF 6 gas filled in gas-insulated electrical equipment is shown in FIG. 6 {IPCC December 1955 11th Table 1-4 of the meeting WGI report, “CO 2
Global warming potential of major greenhouse gases based on the absolute GWP "} (IPCC: Intergovernmental Panel o
n Climeite Change), SF 6 gas has a long life when it is released into the atmosphere, and its global warming potential (integration period) is much larger than that of carbon dioxide. Therefore, if SF 6 gas is released into the atmosphere, it will affect global warming.
【０００５】実際の変電所で高電圧化、大容量化の更新
をガス絶縁電気装置により実施した例の三菱電機技報・
Ｖｏｌ．５４、Ｎｏ．９・１９８０に示されたガス絶縁
送電路を適用した例を図７に示す。この場合は、既設電
気機器を撤去して、高電圧化、大容量化を実施した例で
あり、電気機器が据え付けられる位置は点在しており、
各機器の間はガス絶縁送電路で接続されている。図にお
いて、１は１８７ｋＶガス絶縁開閉装置、２は変圧器、
３は１８７ｋＶガス絶縁開閉装置と変圧器２の間を接続
するガス絶縁送電路、４は１８７ｋＶ送電線から受電す
る引込ブッシング、５は引込ブッシング４が取付けられ
た鉄塔である。６は１８７ｋＶガス絶縁開閉装置と引込
ブッシング４の間を接続するガス絶縁送電路である。７
は既設の受電設備、８は既設の鉄塔、９は制御装置等が
設置された変電所の本館である。[0005] The Mitsubishi Electric Technical Report of an example in which a gas-insulated electric device was used to upgrade the voltage and capacity of an actual substation.
Vol. 54, No. FIG. 7 shows an example in which the gas insulated transmission line shown in 9/1980 is applied. In this case, it is an example of removing the existing electric equipment, increasing the voltage and increasing the capacity, and the positions where the electric equipment is installed are scattered,
A gas-insulated transmission line is connected between each device. In the figure, 1 is a 187 kV gas insulated switchgear, 2 is a transformer,
Reference numeral 3 is a gas-insulated transmission line connecting between the 187 kV gas insulated switchgear and the transformer 2, 4 is a retractable bushing for receiving power from the 187 kV transmission line, and 5 is an iron tower to which the retractable bushing 4 is attached. Reference numeral 6 is a gas-insulated power transmission line that connects the 187 kV gas-insulated switchgear and the retractable bushing 4. 7
Is the existing power receiving equipment, 8 is the existing steel tower, and 9 is the main building of the substation in which the control devices etc. are installed.
【０００６】この構成の１８７ｋＶガス絶縁開閉装置１
は、二つの主母線ユニット、二つの送電線ユニット、二
つの変圧器ユニット、一つの母線連絡ユニットにより構
成され、変圧器ユニットと変圧器２の間はガス絶縁送電
路３で接続され、送電線ユニットから引込ブッシング４
の間は地上に設置された２回線のガス絶縁送電路６で接
続されている。１８７ｋＶガス絶縁開閉機器１、ガス絶
縁送電路３および６のそれぞれの内部の導体の支持はエ
ポキシ樹脂で成型した絶縁スペーサで支持され、各機器
の間は絶縁スペーサで絶縁ガスが流通しないように仕切
られてガス区分されている。１８７ｋＶガス絶縁開閉装
置１と引込ブッシング４との間のガス絶縁送電路６の内
部には０．４ＭｐａのＳＦ６ガスが充填されている。
７、８、９は既設の撤去されない設備であり、この部分
との絶縁距離は十分確保した配置設計となっている。A 187 kV gas-insulated switchgear 1 of this construction
Is composed of two main busbar units, two power transmission line units, two transformer units, and one busbar communication unit. The transformer unit and the transformer 2 are connected by the gas-insulated power transmission line 3, Bushing 4 retracted from the unit
The two spaces are connected by two lines of gas-insulated power transmission lines 6 installed on the ground. The conductors inside the 187 kV gas-insulated switchgear 1, the gas-insulated transmission lines 3 and 6 are supported by insulating spacers molded with epoxy resin, and are separated by insulating spacers between the devices to prevent the insulating gas from flowing. The gas is classified. The inside of the gas-insulated power transmission path 6 between the 187 kV gas-insulated switchgear 1 and the retractable bushing 4 is filled with 0.4 Mpa of SF 6 gas.
7, 8 and 9 are the existing facilities that cannot be removed, and the layout is designed to secure a sufficient insulation distance from this part.
【０００７】このように既設設備をさけた限られたスペ
ースに設置するガス絶縁電気装置は、機器間の距離が長
く、その間を接続するガス絶縁送電路も長くなり、ＳＦ
６ガスも大量に使用された構成となる。As described above, in the gas-insulated electric device installed in a limited space avoiding the existing equipment, the distance between the devices is long, and the gas-insulated power transmission line connecting them is also long.
6 gas is also used in a large amount.
【０００８】図７のように、ＳＦ６ガスが大量に使用さ
れたガス絶縁電気装置において、万一ガス漏れが生じた
場合には、ＳＦ６ガスが大気中に放出され、地球温暖化
問題に影響を与えるので、密封構造には特に注意が必要
である。As shown in FIG. 7, in a gas-insulated electric device in which a large amount of SF 6 gas is used, if a gas leak occurs, SF 6 gas is released into the atmosphere, which causes global warming problems. Special attention must be paid to the sealing structure, as it will affect.
【０００９】[0009]
【発明が解決しようとする課題】上記図７のように、大
量のＳＦ６ガスが充填されたガス絶縁電気装置において
万一ガス漏れが生じた場合にはＳＦ６ガスが大気中に放
出されて、地球温暖化問題に影響する問題点があった。
また、大量のＳＦ６ガスが使用されるのでガス絶縁電気
機器のコストが高くなる問題点もあった。As FIG. 7 [0008], is discharged into the atmosphere SF 6 gas in the unlikely event a gas leak occurs in a large amount of gas insulated electric apparatus SF 6 gas is filled , There was a problem that affected the issue of global warming.
In addition, since a large amount of SF 6 gas is used, there is a problem that the cost of the gas-insulated electric equipment becomes high.
【００１０】この発明は、上記問題点を解決するために
なされたものであり、ＳＦ６ガスの使用量を少なくし、
ガス絶縁電気装置のコストを低減し、同時に万一のガス
漏れに対して地球温暖化問題に対する影響を少なくした
ガス絶縁電気装置を得ることを目的とする。The present invention has been made in order to solve the above problems, and reduces the amount of SF 6 gas used,
An object of the present invention is to obtain a gas-insulated electric device that reduces the cost of the gas-insulated electric device and, at the same time, reduces the influence of the gas leakage on the global warming problem.
【００１１】[0011]
【課題を解決するための手段】この発明の請求項１に係
るガス絶縁電気装置は、遮断器、断路器等の開閉機器、
変成器等の機器が第一の密閉容器に収容されたガス絶縁
開閉装置と、導体が第二の密閉容器に収容されたガス絶
縁送電路とが接続されたガス絶縁電気装置であり、ガス
絶縁開閉装置に接続部を接続し、この接続部とガス絶縁
送電路との間に中間室を設け、接続部と中間室との間お
よび中間室とガス絶縁送電路との間には絶縁スペーサを
配置してガス区分し、ガス絶縁開閉装置には純度９５％
以上のＳＦ６ガスを充填し、ガス絶縁送電路には地球温
暖化問題に影響しない絶縁ガスをガス絶縁開閉装置に充
填されたＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得ら
れる圧力で充填し、中間室にはガス絶縁開閉装置に充填
されたＳＦ６ガスの圧力と、ガス絶縁送電路に充填され
た絶縁ガスの圧力の中間の圧力で、ガス絶縁開閉装置に
充填されたＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得
られように地球温暖化問題に影響しない絶縁ガスにＳＦ
６ガスを混合した混合ガスを充填して構成したものであ
る。A gas-insulated electric device according to claim 1 of the present invention is a switchgear, disconnector, etc.
A gas-insulated electric device in which a device such as a transformer is housed in a first hermetically sealed container and a gas-insulated switchgear in which a conductor is housed in a second hermetically-sealed container is connected. Connect the connection to the switchgear and gas insulation with this connection
An intermediate chamber is provided between the power transmission path and an insulating spacer is provided between the connecting portion and the intermediate chamber and between the intermediate chamber and the gas-insulated power transmission path for gas division, and the gas-insulated switchgear has a purity of 95%. %
The above SF 6 gas is filled, and the gas-insulated transmission line is filled with an insulating gas that does not affect the global warming problem at a pressure at which a dielectric strength equal to that of SF 6 gas filled in the gas-insulated switchgear is obtained. and, the intermediate chamber and the pressure of the SF 6 gas filled in the gas insulated switchgear, with an intermediate pressure in the pressure of the insulating gas filled in the gas insulated transmission line, SF 6 gas filled in the gas insulated switchgear The insulation gas equivalent to that of SF is used for insulation gas that does not affect the global warming problem.
It is configured by filling a mixed gas in which 6 gases are mixed.
【００１２】この発明の請求項２に係るガス絶縁電気装
置は、遮断器、断路器等の開閉機器、変成器等の機器が
三相一括で第一の密閉容器に収容された三相一括形のガ
ス絶縁開閉装置と、三相の導体が一括して第二の密閉容
器に収容された三相一括形のガス絶縁送電路とが接続さ
れたガス絶縁電気装置であり、ガス絶縁開閉装置に接続
部を設け、この接続部とガス絶縁送電路との間に中間室
を設け、接続部と中間室との間および中間室とガス絶縁
送電路との間には絶縁スペーサを配置してガス区分し、
ガス絶縁開閉装置には純度９５％以上のＳＦ６ガスを充
填し、ガス絶縁送電路には、地球温暖化問題に影響しな
い絶縁ガスをガス絶縁開閉装置に充填されたＳＦ６ガス
の絶縁耐力と同等の絶縁耐力が得られる圧力で充填し、
中間室にはガス絶縁開閉装置に充填されたＳＦ６ガスの
圧力とガス絶縁送電路に充填された絶縁ガスの圧力の中
間の圧力で、ガス絶縁開閉装置に充填されたＳＦ６ガス
の絶縁耐力と同等の絶縁耐力が得られるように、地球温
暖化問題に影響しない絶縁ガスにＳＦ６ガスを混合した
混合ガスを充填して構成したものである。A gas-insulated electric device according to a second aspect of the present invention is a three-phase integrated type in which switchgear, disconnecting switch, and other switchgear devices, transformers, and other devices are housed in a three-phase package in a first closed container. The gas-insulated switchgear and the gas-insulated switchgear connected to the gas-insulated power transmission line of the three-phase batch type in which the three-phase conductors are collectively housed in the second closed container are connected to the gas-insulated switchgear . Connection
The part is provided, an intermediate chamber provided between the connecting portion and the gas insulated transmission line, between the between the connection portion and the intermediate chamber and the intermediate chamber and the gas insulated transmission line by arranging an insulating spacer gas Divide
The gas-insulated switchgear is filled with SF 6 gas having a purity of 95% or more, and the gas-insulated transmission path is filled with an insulating gas that does not affect the global warming problem, and the insulation strength of the SF 6 gas filled in the gas-insulated switchgear is Fill with a pressure that provides equivalent dielectric strength,
At an intermediate pressure in the pressure in the intermediate chamber to the insulating gas filled in the pressure and gas insulated transmission path of SF 6 gas filled in the gas insulated switchgear, the dielectric strength of SF 6 gas filled in the gas insulated switchgear In order to obtain a dielectric strength equivalent to that of the above, it is configured by filling an insulating gas that does not affect the global warming problem with a mixed gas of SF 6 gas.
【００１３】この発明の請求項３に係るガス絶縁電気装
置は、遮断器、断路器等の開閉機器、変成器等の機器が
第一の密閉容器に収容されたガス絶縁開閉装置と、導体
が第二の密閉容器に収容されたガス絶縁送電路とが接続
されたガス絶縁電気装置であり、ガス絶縁開閉装置とガ
ス絶縁送電路との間には、直列に配置した複数の中間室
を設け、ガス絶縁開閉装置と中間室との間、中間室相互
間および中間室とガス絶縁送電路との間にはそれぞれ絶
縁スペーサを配置してガス区分し、各中間室に充填する
ガス圧力は、ガス絶縁開閉装置に充填されたＳＦ６ガス
の圧力とガス絶縁送電路に充填された絶縁ガスの圧力の
中間の圧力でそれぞれの中間室の両端の絶縁スペーサの
両面の圧力差がほぼ等しくなるように、各中間室の圧力
を段階的に設定し絶縁ガスを充填し、それぞれの中間室
に充填する絶縁ガスは、設定した圧力で、地球温暖化問
題に影響しない絶縁ガスにガス絶縁開閉装置に充填され
たＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られるよ
うにＳＦ６ガスを混合した混合ガスを充填したものであ
る。According to a third aspect of the present invention, there is provided a gas-insulated electric device, which includes switchgear, disconnector and other switchgear, transformer and other equipment.
A gas-insulated switchgear housed in a first closed container and a conductor
Is connected to a gas-insulated transmission line housed in a second closed container
A plurality of intermediate chambers arranged in series are provided between the gas-insulated switchgear and the gas-insulated transmission line, and between the gas-insulated switchgear and the intermediate chamber, and between the intermediate chambers. Insulating spacers are respectively arranged between the intermediate chamber and the gas-insulated transmission line to divide the gas, and the gas pressure to be filled in each intermediate chamber is the pressure of the SF 6 gas filled in the gas-insulated switchgear and the gas insulation. The pressure in each intermediate chamber is set stepwise so that the pressure difference between the two surfaces of the insulating spacers at both ends of each intermediate chamber is almost equal at the intermediate pressure of the insulating gas filled in the power transmission line. The insulation gas to be filled and to be filled in each intermediate chamber has the same pressure resistance as the insulation pressure of the SF 6 gas filled in the gas insulated switchgear with the insulation gas that does not affect the global warming problem at the set pressure. SF 6 gas to be The combined gas mixture is obtained by filling.
【００１４】この発明の請求項４に係るガス絶縁電気装
置は、遮断器、断路器等の開閉機器、変成器等の機器が
三相一括で第一の密閉容器に収容されたガス絶縁開閉装
置と、三相の導体が一括して第二の密閉容器に収容され
た三相一括形のガス絶縁送電路を接続したガス絶縁電気
装置であって、その接続部は、第一の密閉容器と第二の
密閉容器とを接続する双方のフランジを同一直径とし、
双方のフランジの間に双方の圧力差に耐える厚さの金属
板で形成されたガス区分仕切板に三相分の単相用絶縁ス
ペーサを取り付けたガス区分部材を配置し、導体を支持
してガス区分する構成とし、ガス絶縁開閉装置には純度
９５％以上のＳＦ６ガスを充填し、ガス絶縁送電路に
は、地球温暖化問題に影響しない絶縁ガスをガス絶縁開
閉装置に充填されたＳＦ６ガスの絶縁耐力と同等の絶縁
耐力が得られる圧力で充填したものである。According to a fourth aspect of the present invention, there is provided a gas insulated switchgear in which switchgear, disconnector and other switchgear, transformer and other switchgear are housed in a first hermetically sealed container in a three-phase package. And a gas-insulated electric device in which three-phase conductors are collectively housed in a second hermetically sealed container and connected to a three-phase batch-type gas-insulated transmission line, the connecting portion of which is the first hermetically sealed container. Both flanges connecting the second closed container have the same diameter,
Between the two flanges, a gas partitioning member with three-phase single-phase insulating spacers attached to a gas partitioning plate made of a metal plate with a thickness that can withstand the pressure difference between the two is placed to support the conductor. The gas-insulated switchgear is configured to be gas-separated, and the gas-insulated switchgear is filled with SF 6 gas having a purity of 95% or more, and the gas-insulated transmission line is filled with an insulating gas that does not affect global warming problems. It is filled with a pressure that can obtain a dielectric strength equivalent to that of 6 gas.
【００１５】この発明の請求項５に係るガス絶縁電気装
置は、請求項１または請求項２の構成の、ガス絶縁開閉
装置に接続された接続部と中間室および中間室とガス絶
縁送電路との間に配置された絶縁スペーサは、凸側がガ
ス圧力の高い側になるように配置したものである。The gas-insulated electric apparatus according to claim 5 of the present invention, the structure of claim 1 or claim 2, and a connecting portion connected to a gas-insulated switchgear and the intermediate chamber and the intermediate chamber and the gas insulated transmission line placed insulative spacer between are those which convex side is arranged to be higher gas pressure side.
【００１６】この発明の請求項６に係るガス絶縁電気装
置は、請求項３の構成の、ガス絶縁開閉装置に接続され
た接続部と中間室、中間室相互間および中間室とガス絶
縁送電路との間に配置された絶縁スペーサは、凸側がガ
ス圧力の高い側になるように配置したものである。 A gas-insulated electric device according to claim 6 of the present invention is connected to the gas-insulated switchgear having the structure of claim 3.
Connection and the intermediate chamber, between the intermediate chambers and between the intermediate chamber and the gas
The insulating spacer placed between the edge power transmission line and the
It is arranged so that it is on the high pressure side.
【００１７】この発明の請求項７に係るガス絶縁電気装
置は、遮断器、断路器等の開閉機器、変成器等の機器が
三相一括で第一の密閉容器に収容されたガス絶縁開閉装
置と、三相の導体が一括して第二の密閉容器に収容され
た三相一括形のガス絶縁送電路を接続したガス絶縁電気
装置であって、その接続部は、第一の密閉容器と第二の
密閉容器とを接続する双方のフランジを同一直径とし、
双方のフランジの間に双方の圧力差に耐える厚さの金属
板で形成さ れたガス区分仕切板に両側のそれぞれの密閉
容器に充填された絶縁ガスに耐えるように構成されたブ
ッシングを取り付けたガス区分部材を配置し、導体を支
持してガス区分する構成とし、ガス絶縁開閉装置には純
度９５％以上のＳＦ ６ ガスを充填し、ガス絶縁送電路に
は、地球温暖化問題に影響しない絶縁ガスをガス絶縁開
閉装置に充填されたＳＦ ６ ガスの絶縁耐力と同等の絶縁
耐力が得られる圧力で充填したものである。 A gas-insulated electric device according to claim 7 of the present invention
As for the equipment, there are switchgear, disconnector and other switchgear, transformer and other equipment.
Gas-insulated switchgear housed in a first closed container in a three-phase package
And the three-phase conductors are stored together in the second closed container.
Gas-insulated electricity with connected three-phase batch-type gas-insulated transmission line
A device, the connecting portion of which is the first closed container and the second
Both flanges connecting to the closed container have the same diameter,
Metal with a thickness that can withstand both pressure differences between both flanges
Each sealed on both sides to the gas segment partition plate formed of a plate
A container configured to withstand the insulating gas with which the container is filled.
Place the gas dividing member with the sash attached and support the conductor.
The gas-insulated switchgear is a pure
The gas-insulated transmission line is filled with SF 6 gas of 95% or more.
Insulate gas that does not affect global warming
Insulation equivalent to the dielectric strength of SF 6 gas filled in the closing device
It is filled at a pressure at which proof stress is obtained.
【００１８】[0018]
【発明の実施の形態】実施の形態１．
ガス絶縁電気装置に充填されたＳＦ６ガスが万一大気中
に漏れた場合には、上記従来の技術欄に示したように地
球温暖化問題に影響する問題点があるが、実施の形態１
は万一ガス漏れが生じても地球温暖化問題に対して影響
が少ないようにＳＦ６ガスの使用量を極力少なくしたガ
ス絶縁電気装置を構成するものである。ＳＦ６ガスは絶
縁性能および電流遮断時に発生するアークの消弧性能が
優れており、ガス絶縁開閉装置には遮断器、断路器等の
アークが発生する部分の消弧性能を確保するためにＳＦ
６ガスを充填することが必要である。しかし、アークが
発生しないガス絶縁送電路は絶縁性能が確保できればよ
く、必ずしもＳＦ６ガスを充填する必要はない。絶縁性
能を確保する絶縁ガスで地球温暖化問題に影響しない絶
縁ガスとしては窒素ガス、乾燥空気等の絶縁ガスであ
り、その絶縁ガスの圧力を高くして充填すれば、所要の
絶縁耐力が得られる。BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. If the SF 6 gas filled in the gas-insulated electric device leaks to the atmosphere, there is a problem that it affects the global warming problem as shown in the above-mentioned conventional technique.
Configures a gas-insulated electric device in which the amount of SF 6 gas used is minimized so that even if a gas leak occurs, it will have little effect on the problem of global warming. SF 6 gas has excellent insulation performance and arc extinguishing performance at the time of current interruption, and gas insulation switchgear uses SF 6 gas in order to secure arc extinction performance at parts where arcs such as circuit breakers and disconnectors are generated.
It is necessary to fill 6 gases. However, the gas-insulated transmission line in which no arc is generated need only be able to ensure insulation performance, and does not necessarily need to be filled with SF 6 gas. The insulating gas that ensures the insulation performance and does not affect the global warming problem is an insulating gas such as nitrogen gas or dry air, and if you increase the pressure of the insulating gas and fill it, the required dielectric strength will be obtained. To be
【００１９】窒素ガスとＳＦ６ガスの混合ガスの混合分
圧比とフラッシュオーバ電圧特性は、電気学会技術報告
（ＩＩ部）第２４８号「気体絶縁への混合ガスの応用」
の１７頁に図１に示した特性が報告されている。図１に
よれば、ＳＦ６ガスの混合分圧比１００％のフラッシュ
オーバ電圧に対し、ＳＦ６ガスが０％、すなわち窒素ガ
ス（Ｎ２ ）１００％のフラッシュオーバ電圧値は約４
０％の値になることを示すものである。すなわちアーク
が発生しない部分に窒素ガスを充填したときは、ＳＦ６
ガスが充填された部分の圧力の２．５倍にすることによ
り、ＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られる
ことになる。また、ＳＦ６ガス成分が１００％の絶縁耐
力に対し、窒素ガス、乾燥空気等が絶縁ガスが混合した
場合には、その混合分圧比が５％程度までは、ＳＦ６ガ
スが１００％の絶縁耐力と同等の絶縁耐力が得られる。
したがって、純度９５％以上のＳＦ６ガスは、純度１０
０％のＳＦ６ガスと同等の性能を有するものとしてガス
絶縁電気装置に充填することができる。混合するガス
は、窒素ガス以外に、乾燥空気であっても同様の絶縁性
能は得られる。通常、ガス絶縁開閉装置に充填されるＳ
Ｆ６ガスの圧力は電気装置の構成により異なるが、０．
２〜０．６Ｍｐａ程度であり、窒素ガス、乾燥空気等の
地球温暖化問題に影響しない絶縁ガスをＳＦ６ガスの部
分の２．５倍の０．５〜１．５Ｍｐａの圧力で充填する
ことによりＳＦ６ガスと同等の絶縁耐力が得られる。The mixing partial pressure ratio and flashover voltage characteristics of the mixed gas of nitrogen gas and SF 6 gas are described in Technical Report of the Institute of Electrical Engineers of Japan (Part II) No. 248, “Application of Mixed Gas to Gas Insulation”.
The properties shown in FIG. 1 are reported on page 17. According to FIG. 1, with respect to flashover voltage of mixed partial pressure ratio of 100% SF 6 gas, 0% SF 6 gas, i.e. nitrogen gas (N 2) flashover voltage value of 100% to about 4
This shows that the value becomes 0%. That is, when nitrogen gas is filled in a portion where no arc is generated, SF 6
By making the pressure 2.5 times the pressure of the portion filled with gas, it is possible to obtain a dielectric strength equivalent to that of SF 6 gas. When the insulating gas is mixed with nitrogen gas, dry air, etc., the insulation strength of SF 6 gas is 100%, and when the mixture partial pressure ratio is up to about 5%, the insulation strength of SF 6 gas is 100%. Dielectric strength equivalent to proof strength can be obtained.
Therefore, SF 6 gas having a purity of 95% or more has a purity of 10%.
A gas-insulated electrical device can be filled as having a performance equivalent to 0% SF 6 gas. Similar insulating performance can be obtained even if the gas to be mixed is dry air in addition to nitrogen gas. Normally, S filled in the gas insulated switchgear
The pressure of the F 6 gas varies depending on the configuration of the electric device, but is 0.
It is about 2 to 0.6 Mpa, and is filled with an insulating gas such as nitrogen gas and dry air that does not affect global warming problems at a pressure of 0.5 to 1.5 Mpa that is 2.5 times the SF 6 gas portion. As a result, a dielectric strength equivalent to that of SF 6 gas can be obtained.
【００２０】実施の形態１は、密閉容器に収容する機
器、導体を単相で収容する場合のガス絶縁電気装置の構
成である。図２に実施の形態１のガス絶縁電気装置のユ
ニット構成を示す。図において、１１は遮断器、断路器
等の開閉機器、変成器等の機器が相毎に第一の密閉容器
に収容されたガス絶縁開閉装置であり、ユニット間は母
線１１ａ、１１ｂで接続されている。１２は絶縁スペー
サ、１３は接続部であり、密閉容器１３ａに内部に導体
１３ｂが配置されている。１４は絶縁スペーサ、１５は
中間室であり、密閉容器１５ａの内部に導体１５ｂが配
置されている。ガス絶縁開閉装置１１と接続部１３との
間は絶縁スペーサ１２を配置し、この部分はガス絶縁開
閉装置１１に充填されたＳＦ６ガスが流通するようにな
っている。１６はガス絶縁送電路であり、第二の密閉容
器１６ａの内部に導体１６ｂが支持碍子１６ｃで支持し
て収容されている。接続部１３と中間室１５の間および
中間室１５とガス絶縁送電路１６の間はそれぞれ絶縁ス
ペーサ１４により各部の導体を支持してガス区分されて
いる。１７は架空線に接続するブッシングである。The first embodiment is a configuration of a gas-insulated electric device in which a device and a conductor to be housed in a closed container are housed in a single phase. FIG. 2 shows a unit configuration of the gas insulated electric device according to the first embodiment. In the figure, 11 is a gas-insulated switchgear in which switchgear, disconnector, and other switchgear, transformer, and other devices are housed in a first closed container for each phase, and the units are connected by buses 11a and 11b. ing. Reference numeral 12 is an insulating spacer, 13 is a connecting portion, and the conductor 13b is arranged inside the closed container 13a. Reference numeral 14 is an insulating spacer, 15 is an intermediate chamber, and a conductor 15b is arranged inside the closed container 15a. An insulating spacer 12 is arranged between the gas insulated switchgear 11 and the connection portion 13, and SF 6 gas with which the gas insulated switchgear 11 is filled flows through this portion. Reference numeral 16 denotes a gas-insulated power transmission path, in which a conductor 16b is accommodated inside a second closed container 16a while being supported by a support insulator 16c. Gas is divided between the connecting portion 13 and the intermediate chamber 15 and between the intermediate chamber 15 and the gas-insulated power transmission path 16 by supporting the conductor of each portion by an insulating spacer 14. Reference numeral 17 is a bushing connected to the overhead line.
【００２１】図２のガス絶縁電気装置のガス絶縁開閉装
置１１には開閉機器で発生するアークを消弧する消弧性
能が必要であり、純度１００％のＳＦ ６ ガスと同等の消
弧性能と耐電圧が得られる純度９５％以上のＳＦ６ガス
を適正圧力で充填している。ガス絶縁送電路１６は、絶
縁性能を確保することでよく、ガス絶縁開閉装置１１に
充填したＳＦ６ガスと同等の絶縁耐力が得られる圧力の
窒素ガス、乾燥空気等の地球温暖化問題に影響しない絶
縁ガスを充填し、中間室１５には、ガス絶縁開閉装置１
１に充填されたＳＦ６ガスの圧力とガス絶縁送電路１６
に充填された絶縁ガスの圧力の中間の圧力で、ガス絶縁
開閉装置１１に充填したＳＦ６ガスの絶縁耐力と同等の
絶縁耐力が得られるように、窒素ガスまたは乾燥空気等
の地球温暖化問題に影響ない絶縁ガスにＳＦ６ガスを混
合した混合ガスを充填して構成している。The gas-insulated switchgear 11 of the gas-insulated electric device shown in FIG. 2 is required to have an arc-extinguishing performance for extinguishing the arc generated in the switchgear, and is equivalent to SF 6 gas having a purity of 100%.
SF 6 gas having a purity of 95% or more that provides arc performance and withstand voltage is filled at an appropriate pressure. The gas-insulated power transmission line 16 is required to ensure insulation performance, and affects the global warming problem of nitrogen gas, dry air, etc., at a pressure at which a dielectric strength equivalent to that of SF 6 gas filled in the gas-insulated switchgear 11 is obtained. Not filled with insulating gas, the intermediate chamber 15 has a gas-insulated switchgear 1
1. Pressure of SF 6 gas filled in 1 and gas insulated transmission line 16
In order to obtain a dielectric strength equivalent to that of SF 6 gas filled in the gas-insulated switchgear 11 at an intermediate pressure of the pressure of the insulating gas filled in, the problem of global warming such as nitrogen gas or dry air It is configured by filling a mixed gas obtained by mixing an SF 6 gas with an insulating gas that does not affect the temperature.
【００２２】実際のガス絶縁電気装置の各部に充填する
絶縁ガスの種類および圧力は、ガス絶縁開閉装置１１に
は圧力０．４ＭｐａのＳＦ６ガス、ガス絶縁送電路１６
には、図１の混合ガスのＳＦ６の混合比とフラッシュオ
ーバ電圧特性から、窒素ガスはＳＦ６ガスのフラッシュ
オーバ電圧の約４０％であり、ガス絶縁開閉装置１１に
充填した圧力０．４ＭｐａのＳＦ６ガスと同等の絶縁耐
力が得られるように、圧力を２．５倍（１／０．４）と
して１．０Ｍｐａの窒素ガス、乾燥空気等の地球温暖化
問題に影響しない絶縁ガスを充填している。中間室１５
のガス圧力は、０．４Ｍｐａと１．０Ｍｐａの中間の圧
力０．７Ｍｐａとし、図１の混合ガスのフラッシュオー
バ電圧の特性曲線より、窒素ガス、乾燥空気等の地球温
暖化問題に影響しない絶縁ガスが８０〜８５％、ＳＦ６
ガスが１５〜２０％の混合比の混合ガスを充填すること
でガス絶縁開閉装置１１に充填したＳＦ６ガスの絶縁耐
力と同等の絶縁耐力が得られる。The types and pressures of the insulating gas to be filled in the respective parts of the actual gas-insulated electric device are SF 6 gas having a pressure of 0.4 Mpa in the gas-insulated switchgear 11, and the gas-insulated transmission line 16.
From the mixture ratio of SF 6 of the mixed gas and the flashover voltage characteristic of FIG. 1, the nitrogen gas is about 40% of the flashover voltage of the SF 6 gas, and the pressure filled in the gas insulated switchgear 11 is 0.4 Mpa. In order to obtain the same dielectric strength as SF 6 gas, the pressure should be 2.5 times (1 / 0.4) and 1.0 Mpa of nitrogen gas, dry gas, or other insulating gas that does not affect the global warming problem. Filling. Intermediate room 15
The gas pressure is 0.7 Mpa, which is an intermediate pressure between 0.4 Mpa and 1.0 Mpa. From the characteristic curve of the flashover voltage of the mixed gas in Fig. 1, the insulation that does not affect the global warming problem of nitrogen gas, dry air, etc. Gas is 80-85%, SF 6
By filling the gas mixture gas with a mixing ratio of 15 to 20%, a dielectric strength equivalent to that of the SF 6 gas filled in the gas insulated switchgear 11 can be obtained.
【００２３】ガス絶縁開閉装置１１に接続された接続部
１３と中間室１５との間および中間室１５とガス絶縁送
電路１６との間のガス区分する絶縁スペーサ１４は、通
常、導体支持部が円錐状に形成されているが、この円錐
状の部分はガス圧力が高い方に突出させると、充填され
た絶縁ガスの圧力差による絶縁スペーサの内部応力は圧
縮応力となり耐圧強度が強くなるので、絶縁スペーサ１
４は導体支持部が圧力の高い方に突出するように配置し
ている。The insulating spacer 14 to the gas section of and between the intermediate chamber 15 and the gas insulated transmission path 16 of the gas insulated switchgear connection 13 connected to 11 and the intermediate chamber 15 is normally conductive support portion Although it is formed in a conical shape, if the conical portion is projected toward the side where the gas pressure is high, the internal stress of the insulating spacer due to the pressure difference of the filled insulating gas becomes a compressive stress, and the pressure resistance becomes strong. Insulation spacer 1
No. 4 is arranged so that the conductor supporting portion projects toward the side where the pressure is high.
【００２４】このように構成すると、ガス絶縁開閉装置
１１に接続された接続部１３とガス絶縁送電路１６との
間の圧力差は２つの絶縁スペーサ１４で分圧されること
となり、１つの絶縁スペーサ１４に加わる圧力差は、ガ
ス絶縁開閉装置１１に接続された接続部１３とガス絶縁
送電路１６の間の圧力差の１／２となり、中間室１５の
接続部１３側およびガス絶縁送電路１６側の双方に、従
来のガス絶縁開閉装置およびガス絶縁送電路に同一圧力
のＳＦ ６ ガスを充填する構成で使用された絶縁スペーサ
を設計変更しないで使用することができる。また、ガス
絶縁開閉装置１１と架空線に接続されるブッシング１７
の距離が離れた配置でガス絶縁送電路１６が長くなる場
合においても、ガス絶縁送電路１６にはＳＦ６ガスが充
填されていないので、ガス絶縁送電路１６の部分に万一
ガス漏れが生じた場合、あるいは点検時にガス放出があ
っても地球温暖化問題に対して影響することがなくな
る。さらに、ＳＦ６ガスの使用量が少なくなることでガ
ス絶縁電気装置として安価に構成することができる。With this structure, the connection portion 13 connected to the gas-insulated switchgear 11 and the gas-insulated power transmission path 16 are connected.
The pressure difference between become be divided by two insulating spacers 14, one pressure differential applied to the insulating spacer 14, between the gas-insulated switchgear connecting portion 13 connected to 11 and a gas insulated transmission line 16 It becomes 1/2 of the pressure difference and the intermediate chamber 15
The same pressure is applied to the conventional gas-insulated switchgear and the gas-insulated power transmission path on both the connection part 13 side and the gas-insulated power transmission path 16 side.
The insulating spacer used in the configuration filled with SF 6 gas can be used without any design change . In addition, a bushing 17 connected to the gas insulated switchgear 11 and an overhead line
Even if the gas-insulated power transmission path 16 becomes long when the distance is long, the gas-insulated power transmission path 16 is not filled with SF 6 gas, so a gas leak should occur in the portion of the gas-insulated power transmission path 16. In the event of an accident, or if gas is released during inspection, it will not affect the global warming issue. Further, since the amount of SF 6 gas used is reduced, the gas-insulated electric device can be inexpensively configured.
【００２５】実施の形態２．
実施の形態１では、相分離した単相のガス絶縁電気装置
の構成であったが、実施の形態２は、密閉容器への収容
機器、導体を三相一括して収容する三相一括形ガス絶縁
電気装置の構成である。その構成を図３に示す。図にお
いて、２１は遮断器、断路器等の開閉機器、変成器等の
機器が三相一括して第一の密閉容器に収容された三相一
括形のガス絶縁開閉装置であり、ユニット間は導体を三
相一括して第二の密閉容器に収容してＳＦ６ガスを充填
した母線２１ａ、２１ｂで接続されている。２２はガス
絶縁開閉装置２１と接続部との間をガス区分する絶縁ス
ペーサ、２３は接続部であり、導体２３ｂが密閉容器２
３ａに収容されている。２４は絶縁スペーサ、２５は中
間室であり、三相の導体２５ｂが密閉容器２５ａの内部
に収容されている。２６は三相一括形のガス絶縁送電路
であり、三相の導体２６ｂが密閉容器２６ａに収容され
ている。２７は架空線に接続されるブッシングである。
接続部２３と中間室２５との間および中間室２５とガス
絶縁送電路２６との間には絶縁スペーサ２４によりそれ
ぞれの部分の導体を支持してガス区分されている。Embodiment 2. In the first embodiment, the structure of the single-phase gas-insulated electric device with phase separation is adopted. However, in the second embodiment, a three-phase batch type gas for accommodating equipment and conductors in a hermetically sealed container in three phases at once. It is a structure of an insulated electric device. The structure is shown in FIG. In the figure, reference numeral 21 denotes a three-phase collective type gas-insulated switchgear in which switchgear, disconnector, etc. switchgear, transformer, and other devices are housed in a first hermetically sealed container in a three-phase package. The conductors are housed together in three phases in a second closed container and connected by busbars 21a and 21b filled with SF 6 gas. Reference numeral 22 is an insulating spacer for dividing the gas between the gas-insulated switchgear 21 and the connecting portion, 23 is a connecting portion, and the conductor 23b is the sealed container 2
It is housed in 3a. Reference numeral 24 is an insulating spacer, and 25 is an intermediate chamber, and the three-phase conductor 25b is housed inside the closed container 25a. Reference numeral 26 denotes a three-phase collective type gas-insulated power transmission path, in which a three-phase conductor 26b is housed in a closed container 26a. 27 is a bushing connected to the overhead line.
Gas is divided between the connecting portion 23 and the intermediate chamber 25 and between the intermediate chamber 25 and the gas insulated power transmission path 26 by supporting the conductors of the respective portions by an insulating spacer 24.
【００２６】図３のガス絶縁電気装置は、実施の形態１
の図２と同様に、ガス絶縁開閉装置２１の内部には開閉
機器で発生するアークを消弧する消弧性能が得られる圧
力の純度９５％以上のＳＦ６ガスが充填され、ガス絶縁
送電路２６には、ガス絶縁開閉装置２１に充填されたＳ
Ｆ６ガスと同等の絶縁耐力が得られる圧力の窒素ガスま
たは乾燥空気等の地球温暖化問題に影響しない絶縁ガス
が充填され、中間室２５には、ガス絶縁開閉装置２１に
充填されたＳＦ６ガスの圧力とガス絶縁送電路２６に充
填された絶縁ガスの圧力の中間の圧力でガス絶縁開閉装
置２１に充填されたＳＦ６ガスの絶縁耐力と同等の絶縁
耐力が得られるように窒素または乾燥空気等の絶縁ガス
にＳＦ６ガスを混合した混合ガスを充填して構成してい
る。The gas-insulated electric device shown in FIG.
2, the inside of the gas-insulated switchgear 21 is filled with SF 6 gas having a pressure purity of 95% or more so that the arc-extinguishing performance of extinguishing the arc generated in the switchgear is obtained. 26 is the S filled in the gas insulated switchgear 21.
The insulating gas that does not affect the global warming problem, such as nitrogen gas or dry air, which has a pressure equivalent to the dielectric strength of F 6 gas is filled, and the intermediate chamber 25 is filled with SF 6 filled in the gas insulated switchgear 21. Nitrogen or dry is used so as to obtain a dielectric strength equivalent to the dielectric strength of the SF 6 gas filled in the gas insulated switchgear 21 at an intermediate pressure between the pressure of the gas and the pressure of the insulating gas filled in the gas insulated transmission line 26. It is configured by filling an insulating gas such as air with a mixed gas of SF 6 gas.
【００２７】ガス絶縁電気装置の各部に充填する絶縁ガ
スの種類および圧力は、ガス絶縁開閉装置２１には圧力
が０．４ＭｐａのＳＦ６ガス、ガス絶縁送電路２６に
は、図１のフラッシュオーバ電圧特性から、窒素ガスが
ＳＦ６ ガスの約４０％のフラッシュオーバ電圧であ
り、圧力をガス絶縁開閉装置に充填されたＳＦ６ガスの
圧力の２．５倍の圧力の１．０Ｍｐａとして充填し、中
間室２５には０．４Ｍｐａと１．０Ｍｐａの中間の圧力
０．７Ｍｐａとし、図１の混合ガスのフラッシュオーバ
電圧特性から、窒素ガス、乾燥空気等の地球温暖化問題
に影響しない絶縁ガスを８０〜８５％、ＳＦ６ガスを１
５〜２０％の混合比の混合ガスを充填してガス絶縁開閉
装置２１内のＳＦ６ガスの絶縁耐力と同等の絶縁耐力が
得られる。The type and pressure of the insulating gas with which each part of the gas-insulated electric apparatus is filled are as follows: SF 6 gas having a pressure of 0.4 MPa in the gas-insulated switchgear 21 and flashover of FIG. 1 in the gas-insulated transmission line 26. voltage characteristics, nitrogen gas is about 40% of the flashover voltage of the SF 6 gas fills the pressure of 1.0Mpa to 2.5 times the pressure of the pressure of the SF 6 gas filled in the gas insulated switchgear In the intermediate chamber 25, an intermediate pressure of 0.4 Mpa and 1.0 Mpa is set to 0.7 Mpa. From the flashover voltage characteristics of the mixed gas in FIG. 1, insulating gas such as nitrogen gas and dry air that does not affect the global warming problem. 80-85%, SF 6 gas 1
By filling the mixed gas with a mixing ratio of 5 to 20%, a dielectric strength equivalent to that of SF 6 gas in the gas insulated switchgear 21 can be obtained.
【００２８】この場合においても、中間室２３のガス絶
縁開閉装置２１側およびガス絶縁送電路２６側の絶縁ス
ペーサ２４はガス圧力が高い方に突出するように配置す
ることにより、ガス圧力差による絶縁スペーサ２４の内
部応力は圧縮応力となり耐圧強度が強くなる。Also in this case, the gas in the intermediate chamber 23 is shut off.
By arranging the insulating spacers 24 on the edge switchgear 21 side and the gas-insulated power transmission path 26 side so as to project to the side where the gas pressure is high, the internal stress of the insulating spacers 24 due to the gas pressure difference becomes a compressive stress and the pressure resistance is high. Become.
【００２９】このように構成すると、ガス絶縁開閉装置
２１に接続された接続部２３とガス絶縁送電路２６の圧
力差が２つの絶縁スペーサ２４で負担することとなり、
１つの絶縁スペーサ２４に加わる圧力差は、ガス絶縁開
閉装置２１およびガス絶縁送電路２６の双方にＳＦ６ガ
スを充填する場合の１／２となるので従来の構成で使用
した汎用性の高い標準的な絶縁スペーサを使用すること
ができる。また、ガス絶縁開閉装置２１と架空線に接続
するブッシング２７が離れた配置でガス絶縁送電路２６
が長くなる場合においても、ガス絶縁送電路２６にはＳ
Ｆ６ガスが充填されていないので、万一ガス漏れが生じ
た場合、あるいは点検時にガス放出があっても、地球温
暖化問題に影響することがなくなる。さらに、ＳＦ６ガ
スの使用量が少なくなるのでガス絶縁電気装置として安
価に構成することができる。With this structure, the pressure difference between the connecting portion 23 connected to the gas-insulated switchgear 21 and the gas-insulated transmission path 26 is borne by the two insulating spacers 24.
The pressure difference applied to one insulating spacer 24 is 1/2 that in the case where both the gas-insulated switchgear 21 and the gas-insulated power transmission path 26 are filled with SF 6 gas, so that the conventional configuration is used.
High standard insulating spacer versatile that can be used. Further, the gas-insulated switchgear 21 and the bushing 27 connected to the overhead line are arranged apart from each other, and the gas-insulated transmission line 26 is provided.
Even if the length becomes longer, the gas-insulated transmission line 26 has S
Since it is not filled with F 6 gas, it does not affect the global warming problem should a gas leak occur or if gas is released during inspection. Furthermore, since the amount of SF 6 gas used is reduced, the gas-insulated electric device can be inexpensively constructed.
【００３０】実施の形態３．
実施の形態２の三相一括形の図３の構成は、密閉容器の
直径が大きく、ガス区分する絶縁スペーサの直径も大き
くなり、絶縁スペーサに加わる充填された絶縁ガスの差
圧による荷重が大きくなる。直径が大きい場合の絶縁ス
ペーサに加わる荷重に耐える強度にするには、厚さを厚
くする等の強度を上げる対策が必要であり、絶縁スペー
サの製作コストが高くなる問題点がある。実施の形態３
では、各部にＳＦ６ガスを充填するときに使用する汎用
性の高い絶縁スペーサが使用できるように複数の中間室
を設けて絶縁ガスの充填圧力を段階的に高くなるように
構成したものである。その構成は、図３の構成の接続部
２３もガス区分して中間室の機能を持たせ、これを第一
の中間室とし、図３の中間室２５を第二の中間室とする
２つの中間室を設けた構成とし、ガス絶縁開閉装置２１
のガス圧力とガス絶縁送電路２６に充填された混合ガス
の圧力差を２等分し、ガス絶縁開閉装置、第一の中間
室、第二の中間室の各部に充填するガス圧力を段階的に
高くなるように設定し、その圧力における充填した混合
ガスの絶縁耐力がガス絶縁開閉装置に充填されたＳＦ６
ガスと同等の絶縁耐力になるように窒素ガス、乾燥空気
等の地球温暖化問題に影響しない絶縁ガスにＳＦ６ガス
を混合した混合ガスを充填したものである。Embodiment 3. In the configuration of FIG. 3 of the three-phase collective type according to the second embodiment, the diameter of the closed container is large, the diameter of the insulating spacer for dividing the gas is also large, and the load due to the differential pressure of the filled insulating gas applied to the insulating spacer is large. Become. In order to withstand the load applied to the insulating spacer having a large diameter, it is necessary to take measures such as increasing the thickness to increase the strength, which causes a problem of increasing the manufacturing cost of the insulating spacer. Embodiment 3
In the above, a plurality of intermediate chambers are provided so that the filling pressure of the insulating gas is increased stepwise so that a highly versatile insulating spacer used when filling each portion with SF 6 gas can be used. . The configuration is such that the connecting portion 23 of the configuration of FIG. 3 is also gas-divided so as to have a function of an intermediate chamber, which is a first intermediate chamber, and the intermediate chamber 25 of FIG. 3 is a second intermediate chamber. A gas-insulated switchgear 21 having an intermediate chamber
The pressure difference between the gas pressure of the gas insulated switchgear and the mixed gas filled in the gas insulated transmission line 26 is divided into two equal parts, and the gas pressures filled in the respective parts of the gas insulated switchgear, the first intermediate chamber and the second intermediate chamber are stepwise. set to be higher in, SF 6 in which the dielectric strength of the mixed gas filled in the pressure is filled in the gas insulated switchgear
It is a mixture gas of SF 6 gas mixed with an insulating gas such as nitrogen gas and dry air that does not affect the global warming problem so as to have a dielectric strength equivalent to that of the gas.
【００３１】実施の形態２の場合と同様にガス絶縁電気
装置に充填したＳＦ６ガスの圧力が０．４Ｍｐａの場合
について、ガス圧力およびＳＦ６ガスの混合割合を求め
ると、第一の中間室にはＳＦ６ガスの混合比は２５〜３
０％、圧力０．６Ｍｐａの混合ガス、第二の中間室には
ＳＦ６ガスの混合比は５〜１０％、圧力０、８Ｍｐａの
混合ガスを充填することによりガス絶縁開閉装置に充填
されたＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られ
る。この構成ではガス区分する絶縁スペーサが３箇所と
なり、１箇所の絶縁スペーサに加わる圧力差は、ガス絶
縁開閉装置２１とガス絶縁送電路１６の間の圧力差の１
／３となる。 Similar to the case of the second embodiment, when the pressure of the SF 6 gas filled in the gas insulated electric device is 0.4 Mpa, the gas pressure and the mixing ratio of the SF 6 gas are calculated. The mixing ratio of SF 6 gas is 25 to 3
The gas-insulated switchgear was filled with a mixed gas of 0% and a pressure of 0.6 Mpa, and the second intermediate chamber was filled with a mixed gas of SF 6 gas of 5 to 10% and a pressure of 0 and 8 Mpa. A dielectric strength equivalent to that of SF 6 gas can be obtained. With this configuration, there are three insulating spacers that divide the gas.
Therefore, the pressure difference applied to one insulating spacer is
1 of the pressure difference between the edge switchgear 21 and the gas-insulated transmission line 16
/ 3.
【００３２】この場合においても、圧力差が加わる第一
の中間室（接続部２３）のガス絶縁開閉装置２１側の絶
縁スペーサ２２、第二の中間室（中間室２５）の両側の
絶縁スペーサ２４はガス圧力が高い方に突出するように
配置することにより、ガス圧力差による絶縁スペーサ２
２、２４の内部応力が圧縮応力となり耐圧強度が高くな
る。Even in this case, the first pressure difference is applied.
Isolation of the gas-insulated switchgear 21 side of the intermediate chamber (connection part 23) of
The edge spacers 22 and the insulating spacers 24 on both sides of the second intermediate chamber (intermediate chamber 25) are arranged so as to project toward the side where the gas pressure is high, so that the insulating spacers 2 due to the gas pressure difference are formed.
The internal stress of Nos. 2 and 24 becomes a compressive stress, and the compressive strength increases.
【００３３】このように第一の中間室と第二の中間室を
設けてガス圧力を段階的にして充填することにより、ガ
ス区分する絶縁スペーサ２２および絶縁スペーサ２４に
加わる圧力差は、中間室を一つ設ける場合よりも低くな
る。このように構成すると、全体にＳＦ６ガスを充填す
るガス絶縁電気装置に使用する汎用性の高い標準的な絶
縁スペーサが使用できるので生産性の高いガス絶縁電気
装置が得られ、ガス絶縁送電路２６に万一ガス漏れが生
じた場合、あるいは点検時にガス放出があっても、地球
温暖化問題に影響しない安価なガス絶縁電気装置が構成
できる。By thus providing the first intermediate chamber and the second intermediate chamber and filling the gas pressure in a stepwise manner, the pressure difference applied to the insulating spacer 22 and the insulating spacer 24 which divides the gas is the intermediate chamber. Lower than if you have one
It According to this structure, a highly versatile standard insulating spacer used for a gas-insulated electric device that is filled with SF 6 gas can be used, so that a gas-insulated electric device with high productivity can be obtained and a gas-insulated transmission line can be obtained. If a gas leak occurs in 26, or if gas is released during inspection, an inexpensive gas-insulated electric device that does not affect the global warming problem can be configured.
【００３４】実施の形態４．
三相一括形のガス絶縁電気装置の場合、密閉容器の直径
が大きいので、絶縁スペーサに加わるガス圧力差による
荷重が大きくなるが、絶縁スペーサの機能は各部をガス
区分することと、導体を絶縁して支持することであり、
この実施の形態４は、ガス区分する絶縁スペーサの構成
を、ガス圧力差による荷重に対しては金属板で対応し、
導体の絶縁支持に対しては単相用の絶縁スペーサで支持
し、中間室を設けなくてもガス区分できるように構成し
たものである。その構成を図４に示す。図において、３
１は遮断器、断路器、接地開閉器等の開閉機器、変成器
等の機器が三相一括して第一の密閉容器に収容された三
相一括形のガス絶縁開閉装置、３２はガス区分部材であ
り、ガス絶縁開閉装置３１の第一の密閉容器壁にガス絶
縁送電路３３側の第二の密閉容器のそれぞれの接続フラ
ンジを同一直径とし、その接続フランジの間に、ガス絶
縁開閉装置の絶縁ガス圧力と、ガス絶縁送電路の絶縁ガ
ス圧力の差に耐える厚さの金属板で形成されたガス区分
仕切板３２ａを取付け、このガス区分仕切板３２ａに三
相分の単相用絶縁スペーサ３２ｂを所定の絶縁距離を保
って取り付けた構成である。３３はガス絶縁送電路であ
り、第二の密閉容器３３ａの内部に三相の導体３３ｂを
所定の間隔を保って絶縁支持碍子３３ｃで支持して収容
された構成である。第二の密閉容器３３ａはガス絶縁開
閉装置３１に取り付ける部分が絶縁距離を確保するため
に太くなっている。Fourth Embodiment In the case of a three-phase batch type gas-insulated electric device, since the diameter of the closed container is large, the load due to the gas pressure difference applied to the insulating spacer is large, but the function of the insulating spacer is to separate each part into gas and to insulate the conductor. And support
In the fourth embodiment, the structure of the insulating spacer for dividing the gas is handled with a metal plate for the load due to the gas pressure difference.
The conductor is insulated and supported by an insulating spacer for a single phase so that the gas can be separated without providing an intermediate chamber. The structure is shown in FIG. In the figure, 3
1 is a three-phase batch type gas-insulated switchgear in which switchgear, disconnector, switchgear such as earthing switch, transformer and other equipment are housed in a first closed container in a three-phase package, 32 is a gas class The first insulating container wall of the gas-insulated switchgear 31 has the same connection flange of each of the second sealed containers on the gas-insulated transmission path 33 side, and the gas-insulated switchgear is provided between the connection flanges. The gas dividing partition plate 32a formed of a metal plate having a thickness that can withstand the difference between the insulating gas pressure of the gas insulating gas pressure and the insulating gas pressure of the gas insulated transmission line is attached to the gas dividing partition plate 32a for three-phase single phase. This is a configuration in which the spacer 32b is attached while keeping a predetermined insulation distance. Reference numeral 33 denotes a gas-insulated power transmission path, which is configured such that three-phase conductors 33b are housed inside a second closed container 33a while being supported by an insulating support insulator 33c at a predetermined interval. The second airtight container 33a has a thicker portion to be attached to the gas insulated switchgear 31 in order to secure an insulation distance.
【００３５】この構成は、ガス絶縁開閉装置３１が箱形
で形成され、充填されるＳＦ６ガスの充填圧力は０．２
Ｍｐａ程度の低い圧力で構成である。ガス絶縁送電路３
３には、圧力が０．５Ｍｐａ前後の窒素ガス、乾燥空気
等の地球温暖化問題に影響しない絶縁ガスを充填した構
成である。In this structure, the gas-insulated switchgear 31 is formed in a box shape, and the filling pressure of SF 6 gas to be filled is 0.2.
It is configured with a low pressure of about Mpa. Gas insulated transmission line 3
No. 3 has a configuration in which an insulating gas such as nitrogen gas having a pressure of about 0.5 Mpa and dry air that does not affect the global warming problem is filled.
【００３６】ガス区分部材３２は、ガス絶縁開閉装置と
ガス絶縁送電路の絶縁ガス圧力の差に耐える金属板で形
成されたガス区分仕切板３２ａに３相分の単相用絶縁ス
ペーサ３２ｂを取り付けた構成としたので、直径が大き
くなることに対しては金属板のガス区分仕切板３２ａで
耐えるので、耐圧力の高いガス区分部材３２が容易に形
成でき、中間室を設けることなくガス区分され、接続部
を短くしたガス絶縁電気装置が構成できる。The gas dividing member 32 has a gas dividing partition plate 32a formed of a metal plate that can withstand the difference in insulating gas pressure between the gas insulated switchgear and the gas insulated power transmission line, and has three-phase single-phase insulating spacers 32b attached thereto. With this configuration, since the gas dividing partition plate 32a made of a metal plate withstands an increase in diameter, the gas dividing member 32 having high pressure resistance can be easily formed, and the gas can be divided without providing an intermediate chamber. A gas-insulated electric device with a short connection can be constructed.
【００３７】このように構成すると、標準品の安価な単
相用絶縁スペーサを使用して大きな差圧に耐えるガス区
分部材３２が形成され、中間室を設けなくてもガス絶縁
送電路に地球温暖化問題に対する影響のない絶縁ガスを
充填したガス絶縁電気装置が安価に構成できる。According to this structure, the gas dividing member 32 that withstands a large differential pressure is formed by using the standard low-priced insulating spacer for single phase, and the global warming in the gas-insulated power transmission line is possible without providing the intermediate chamber. A gas-insulated electric device that is filled with an insulating gas that does not affect the liquefaction problem can be constructed at low cost.
【００３８】実施の形態５．
実施の形態４では、金属板と単相用絶縁スペーサを組合
せてガス区分部材を構成し、中間室を設けないでガス絶
縁送電路に地球温暖化問題に影響しない絶縁ガスを充填
したガス絶縁電気装置を構成したが、実施の形態５では
ガス区分部材を金属板に３本の単相用ブッシングを取り
付けた構成として中間室を設けないで地球温暖化問題に
影響しないガス絶縁電気装置を構成したものである。そ
の構成のガス絶縁開閉装置とガス絶縁送電路のガス区分
する部分の構成を図５に示す。図において、４１は実施
の形態３、４と同様に遮断器、断路器、接地開閉器等の
開閉機器と変成器等の機器を三相一括で密閉容器に収容
したガス絶縁開閉装置、４２は絶縁スペーサ、４３は密
閉容器４３ａにブッシング４４の一方を収容し、ガス絶
縁開閉装置４１との間を導体４３ｂで接続する接続部で
ある。Embodiment 5. In the fourth embodiment, a gas partition member is configured by combining a metal plate and a single-phase insulating spacer, and a gas-insulated electricity transmission line in which a gas-insulated transmission path is filled with an insulating gas that does not affect the global warming problem without providing an intermediate chamber. Although the apparatus is configured, in the fifth embodiment, a gas-insulating electrical apparatus that does not affect the global warming problem is configured without providing an intermediate chamber by configuring the gas dividing member with a metal plate and three single-phase bushings attached. It is a thing. FIG. 5 shows the configuration of the gas-insulated switchgear of that configuration and the portion of the gas-insulated transmission line that separates gases. In the figure, 41 is a gas-insulated switchgear in which switchgear such as a circuit breaker, a disconnector, and a ground switch and a device such as a transformer are housed in a hermetically sealed container in a three-phase manner, as in the third and fourth embodiments. The insulating spacer 43 is a connecting portion that accommodates one of the bushings 44 in the closed container 43a and connects the gas insulating switchgear 41 with the conductor 43b.
【００３９】４４はガス絶縁開閉装置４１とガス絶縁送
電路４８の間をガス区分するガス区分部材であり、金属
板で形成されたガス区分仕切板４５に、両端がそれぞれ
充填されている絶縁ガスの圧力に耐えるように構成され
た３相分の単相のブッシング４６を取り付けた構成とし
ている。４７はブッシング４５のガス絶縁送電路側を収
容する接続タンクである。４８はガス絶縁開閉装置４１
から架空送電線に接続されるブッシングの間に配置され
たガス絶縁送電路であり、三相の導体４８ｂが支持碍子
４８ｃで支持されて密閉容器４８ａの内部に収容され、
ガス絶縁開閉装置４１には、純度１００％のＳＦ ６ ガス
と同等の消弧性能と耐電圧が得られる純度９５％以上の
ＳＦ６ガスが例えば０．４Ｍｐａの圧力で充填され、ガ
ス絶縁送電路４８には窒素ガス、乾燥空気等の地球温暖
化問題に影響しない絶縁ガスがガス絶縁開閉装置４１に
充填されたＳＦ６ ガスの絶縁耐力と同等の絶縁耐力が
得られるように窒素ガス、乾燥空気等の地球温暖化問題
に影響しない絶縁ガスが１．０Ｍｐａの圧力で充填され
ている。Reference numeral 44 is a gas partition member for partitioning the gas between the gas-insulated switchgear 41 and the gas-insulated power transmission path 48, and an insulating gas in which both ends are filled in a gas partition partition plate 45 formed of a metal plate. The single-phase bushing 46 for three phases configured to withstand the pressure is attached. Reference numeral 47 is a connection tank that houses the gas-insulated power transmission path side of the bushing 45. 48 is a gas insulated switchgear 41
Is a gas-insulated transmission path arranged between bushings connected to the overhead transmission line, and the three-phase conductor 48b is supported by the support insulator 48c and is housed inside the hermetically sealed container 48a.
The gas-insulated switchgear 41 includes 100% pure SF 6 gas.
SF 6 gas with a purity of 95% or more that achieves arc-extinguishing performance and withstand voltage equivalent to that is filled at a pressure of, for example, 0.4 MPa, and the gas-insulated power transmission path 48 has a global warming problem such as nitrogen gas and dry air. Insulation gas that does not affect the global warming problem such as nitrogen gas and dry air is 1.0 MPa so that insulation gas that does not affect the insulation strength equivalent to that of SF 6 gas filled in the gas insulation switchgear 41 is obtained. It is filled with the pressure of.
【００４０】図５のようにガス区分する部分にブッシン
グ４６を使用すると、直径が大きくなることに対しては
金属板のガス区分仕切板３２ａの厚さを厚くすることで
対応でき、耐圧力の高いガス区分部材３２が容易に構成
できる。したがって、ガス絶縁開閉装置４１とガス絶縁
送電路４８の部分の圧力差が大きくても、中間室を設け
ることなくガス区分することができ、ガス絶縁送電路４
８に地球温暖化問題に影響しない窒素ガス、乾燥空気等
の地球温暖化問題に影響しない絶縁ガスが使用できるガ
ス絶縁電気装置として寸法が縮小され安価に構成でき
る。When the bushing 46 is used for the gas dividing portion as shown in FIG. 5, the increase in diameter can be dealt with by increasing the thickness of the gas dividing partition plate 32a of the metal plate, and the pressure resistance is increased. The high gas partition member 32 can be easily constructed. Therefore, even if the pressure difference between the gas-insulated switchgear 41 and the gas-insulated power transmission path 48 is large, the gas can be separated without providing an intermediate chamber, and the gas-insulated power transmission path 4
The size of the gas-insulated electric device can be reduced and the cost can be reduced at 8 as a gas-insulated electric device that can use an insulating gas that does not affect the global warming problem such as nitrogen gas or dry air that does not affect the global warming problem.
【００４１】[0041]
【発明の効果】この発明の請求項１に係るガス絶縁電気
装置は、ガス絶縁開閉装置に接続部を接続し、この接続
部とガス絶縁送電路との間に中間室を設け、ガス絶縁開
閉装置には純度９５％以上のＳＦ６ガスを充填し、ガス
絶縁送電路には窒素ガス、乾燥空気等の地球温暖化問題
に影響しない絶縁ガスをガス絶縁開閉装置に充填された
ＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られる圧力
で充填し、中間室にはガス絶縁開閉装置に充填されたＳ
Ｆ６ガスの圧力と、ガス絶縁送電路に充填された絶縁ガ
スの圧力の中間の圧力で、ガス絶縁開閉装置に充填され
たＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られよう
に地球温暖化問題に影響しない絶縁ガスとＳＦ６ガスを
混合した混合ガスを充填した構成としたので、絶縁ガス
の使用量の多いガス絶縁送電路にガス漏れが発生した場
合、あるいは点検時に絶縁ガスが放出されても地球温暖
化問題に影響しないガス絶縁電気装置が安価に構成でき
る。According to the first aspect of the present invention, there is provided a gas-insulated electric device in which a connecting portion is connected to a gas-insulated switchgear and the connection is made.
Section is installed between the gas insulation transmission line and the gas-insulated transmission line, the gas-insulated switchgear is filled with SF 6 gas with a purity of 95% or more, and the gas-insulated transmission line has a global warming problem such as nitrogen gas and dry air. Is filled with an insulating gas that does not affect the gas insulation switchgear at a pressure that provides a dielectric strength equivalent to that of SF 6 gas filled in the gas insulation switchgear, and the intermediate chamber is filled with S
At a pressure intermediate between the pressure of the F 6 gas and the pressure of the insulating gas filled in the gas-insulated transmission line, it is necessary to obtain a dielectric strength equivalent to that of the SF 6 gas filled in the gas-insulated switchgear. since it was filled with mixed gas of the insulating gas and SF 6 gas does not affect the global warming configuration, when gas leakage occurs in many gas insulated transmission path of usage of the insulating gas or insulating gas during inspection A gas-insulated electric device that does not affect the problem of global warming even if emitted is inexpensive can be constructed.
【００４２】この発明の請求項２に係るガス絶縁電気装
置は、三相一括形のガス絶縁開閉装置に接続部を接続し
この接続部と、三相一括形のガス絶縁送電路との間に中
間室を設け、ガス絶縁開閉装置には純度９５％以上のＳ
Ｆ６ ガスを充填し、ガス絶縁送電路には地球温暖化問
題に影響しない絶縁ガスをガス絶縁開閉装置に充填され
たＳＦ６ ガスの絶縁耐力と同等の絶縁耐力が得られる
圧力で充填し、中間室にはガス絶縁開閉装置に充填され
たＳＦ６ ガスの圧力とガス絶縁送電路に充填された絶
縁ガスの圧力の中間の圧力で、ガス絶縁開閉装置に充填
されたＳＦ６ ガスの絶縁耐力と同等の絶縁耐力が得ら
れるように地球温暖化問題に影響しない絶縁ガスとＳＦ
６ガスとを混合した混合ガスを充填して構成したので、
絶縁ガスの使用量の多いガス絶縁送電路にガス漏れが発
生して場合、あるいは点検時に絶縁ガスが放出されても
地球温暖化問題に影響しないガス絶縁電気装置が安価に
構成できる。According to a second aspect of the present invention, there is provided a gas-insulated electric device in which a connecting portion is connected to a three-phase collective type gas-insulated switchgear.
An intermediate chamber is provided between this connection part and the three-phase batch type gas-insulated transmission line, and the gas-insulated switchgear has an S-purity of 95% or more.
F 6 gas is filled, and the gas-insulated transmission line is filled with an insulating gas that does not affect the global warming problem at a pressure at which a dielectric strength equivalent to that of SF 6 gas filled in the gas-insulated switchgear is obtained. at an intermediate pressure in the pressure in the intermediate chamber to the insulating gas filled in the pressure and gas insulated transmission path of SF 6 gas filled in the gas insulated switchgear, the dielectric strength of SF 6 gas filled in the gas insulated switchgear Insulation gas and SF that do not affect the global warming problem so that the same dielectric strength as
Since it was configured by filling a mixed gas in which 6 gases were mixed,
A gas-insulated electric device that does not affect the global warming problem even if a gas leak occurs in the gas-insulated power transmission line that uses a large amount of insulating gas or if the insulating gas is released during inspection can be inexpensively configured.
【００４３】この発明の請求項３に係るガス絶縁電気装
置は、請求項１または請求項２の構成のガス絶縁開閉装
置とガス絶縁送電路の間に直列に配置した複数の中間室
を設け、それぞれの中間室に充填するガス圧力は、ガス
絶縁開閉装置に充填されたＳＦ６ガスの圧力とガス絶縁
送電路に充填された絶縁ガスの圧力の中間の圧力で各中
間室の両端の絶縁スペーサの両側の圧力差がほぼ等しく
なるように各中間室の圧力を段階的な値に設定し、それ
ぞれの中間室に充填する絶縁ガスは、地球温暖化問題に
影響しない絶縁ガスにガス絶縁開閉装置に充填されたＳ
Ｆ６ガスの絶縁耐力と同等の絶縁耐力が得られるように
ＳＦ６ガスを混合した混合ガスを充填した構成としたの
で、中間室部分に標準的な絶縁スペーサが使用でき、生
産性が高く、ガス絶縁送電路部分のガス漏れが生じた場
合、あるいは点検時にガスが放出されても地球温暖化問
題に影響しないガス絶縁電気装置が得られる。According to a third aspect of the present invention, there is provided a gas-insulated electric device, wherein a plurality of intermediate chambers arranged in series are provided between the gas-insulated switchgear having the structure of the first or second aspect and the gas-insulated power transmission path. The gas pressure to be filled in each intermediate chamber is an intermediate pressure between the pressure of the SF 6 gas filled in the gas-insulated switchgear and the pressure of the insulating gas filled in the gas-insulated transmission line, and the insulating spacers at both ends of each intermediate chamber. The pressure in each intermediate chamber is set to a stepwise value so that the pressure difference on both sides of each is almost equal, and the insulating gas filled in each intermediate chamber is an insulating gas that does not affect the global warming problem. Filled in
Since the composition is such that the mixed gas in which SF 6 gas is mixed is filled so that the dielectric strength equivalent to that of F 6 gas is obtained, a standard insulating spacer can be used in the intermediate chamber part, and the productivity is high. It is possible to obtain a gas-insulated electric device that does not affect the global warming problem even if gas leaks in the gas-insulated transmission path portion or gas is released during inspection.
【００４４】この発明の請求項４に係るガス絶縁電気装
置は、三相一括形のガス絶縁開閉装置と三相一括形のガ
ス絶縁送電路とが接続されたガス絶縁電気装置の密閉容
器のそれぞれの接続フランジのを同一直径とし、双方の
フランジの間に双方の圧力差に耐える厚さの金属板で形
成されたガス区分仕切板に３相分の単相用絶縁スペーサ
を所定をガス区分部材を配置し、導体を支持してガス区
分する構成とし、ガス絶縁開閉装置には高純度のＳＦ６
ガスを充填し、ガス絶縁送電路には、地球温暖化問題に
影響しない絶縁ガスをガス絶縁開閉装置に充填されたＳ
Ｆ６ガスの絶縁耐力と同等の絶縁耐力が得られる圧力で
充填した構成したので、接続部の圧力差が大きい場合で
も、中間室を設けることなくガス区分することができ、
接続部の寸法も短く、絶縁ガスの使用量の多いガス絶縁
送電路にガス漏れが生じた場合、あるいは点検時に絶縁
ガスが放出されても地球温暖化問題に影響しないガス絶
縁電気装置が安価に構成できる。According to a fourth aspect of the present invention, there is provided a gas-insulated electric device, each of which is a hermetically sealed container of the gas-insulated electric device in which a three-phase package type gas-insulated switchgear and a three-phase package type gas-insulated transmission line are connected. Of the connecting flange of the same diameter, and the gas partitioning plate made of a metal plate having a thickness that can withstand the pressure difference between the two flanges, is provided with three-phase single-phase insulating spacers for the gas partitioning member. Is arranged to support the conductor to divide the gas, and the gas-insulated switchgear has a high-purity SF 6
The gas-insulated transmission line is filled with gas, and the gas-insulated switchgear is filled with insulating gas that does not affect global warming problems.
Since it is configured to be filled with a pressure capable of obtaining a dielectric strength equivalent to that of F 6 gas, even if the pressure difference at the connection portion is large, it is possible to perform gas division without providing an intermediate chamber,
Gas insulated electrical equipment that does not affect global warming issues even if gas leakage occurs in the gas insulated power transmission line where the size of the connection part is short and the amount of insulating gas used is large, or even when the insulating gas is released during inspection Can be configured.
【００４５】この発明の請求項５に係るガス絶縁電気装
置は、請求項１または請求項２の構成のガス絶縁開閉装
置に接続された接続部と中間室および中間室とガス絶縁
送電路との間に配置された絶縁スペーサは、凸側がガス
圧力の高い側になるように配置して構成したので、絶縁
スペーサの内部応力は圧縮応力となり耐圧強度が大きい
安定した構成となる。According to a fifth aspect of the present invention, there is provided a gas-insulated electric device comprising: a connecting part connected to the gas-insulated switchgear of the first or second aspect; an intermediate chamber; and an intermediate chamber and a gas-insulated transmission line. placed insulative spacer between the convex side since it is configured by arranging such that the high side of the gas pressure, the internal stress of the insulating spacer is configured such that a stable compression strength becomes compressive stress is large.
【００４６】この発明の請求項６に係るガス絶縁電気装
置は、請求項３の構成のガス絶縁開閉装置と中間室、中
間室相互間および中間室とガス絶縁送電路との間に配置
された絶縁スペーサは、凸側がガス圧力の高い側になる
ように配置して構成したので、絶縁スペーサの内部応力
は圧縮応力となり耐圧強度が大きい安定した構成とな
る。 According to a sixth aspect of the present invention, there is provided a gas-insulated electric device, a gas-insulated switchgear having the construction of the third aspect, an intermediate chamber, and a middle chamber.
Arranged between the interchambers and between the interchamber and the gas-insulated transmission line
Insulated spacers have a convex side on which the gas pressure is high.
The internal stress of the insulating spacer is
Is a compressive stress and has a large compressive strength.
It
【００４７】この発明の請求項７に係るガス絶縁電気装
置は、三相一括形のガス絶縁開閉装置と三相一括形のガ
ス絶縁送電路とが接続されたガス絶縁電気装置のそれぞ
れの密閉容器の接続フランジを同一直径とし、双方のフ
ランジの間に双方の圧力差に耐える厚さの金属板で形成
されたガス区分仕切板に３本のブッシングを取り付けた
ガス区分部材を配置し、導体を支持してガス区分する構
成とし、ガス絶縁開閉装置には純度９５％以上のＳＦ ６
ガスを充填し、ガス絶縁送電路には、地球温暖化問題に
影響しない絶縁ガスをガス絶縁開閉装置に充填されたＳ
Ｆ ６ ガスの絶縁耐力と同等の絶縁耐力が得られる圧力で
充填した構成したので、接続部の圧力差が大きい場合で
も、中間室を設けることなくガス区分することができ、
接続部の寸法も短く、絶縁ガスの使用量の多いガス絶縁
送電路部分にガス漏れが生じた場合、あるいは点検時に
絶縁ガスが放出されても地球温暖化問題に影響しないガ
ス絶縁電気装置が安価に構成できる。 Gas insulated electrical equipment according to claim 7 of the present invention
The three-phase all-in-one type gas insulated switchgear and the three-phase all-in-one type
Each of the gas-insulated electrical equipment connected to the
The connection flanges of these closed containers have the same diameter, and
Formed by a metal plate with a thickness that can withstand the pressure difference between the two lunges
3 bushings were attached to the gas partition plate
A structure for arranging a gas dividing member and supporting the conductor to divide the gas
The gas-insulated switchgear is made of SF 6 with a purity of 95% or higher.
Filled with gas, gas insulated power transmission line, global warming problem
S filled with insulating gas that does not affect the gas-insulated switchgear
At a pressure that produces a dielectric strength equivalent to that of F 6 gas
Since it is filled, it can be used when the pressure difference at the connection is large.
Also, it is possible to separate gas without providing an intermediate chamber,
Gas insulation with short connection dimensions and high usage of insulating gas
If gas leaks in the power transmission line or during inspection
Even if the insulating gas is released, it does not affect the global warming problem.
The insulated electric device can be constructed at low cost.
【図１】 窒素ガスとＳＦ６ガスの混合比とフラッシュ
オーバ電圧の関係を示す特性図である。FIG. 1 is a characteristic diagram showing a relationship between a flashover voltage and a mixture ratio of nitrogen gas and SF 6 gas.
【図２】 実施の形態１の相分離形のガス絶縁電気装置
の構成図である。FIG. 2 is a configuration diagram of the phase-separated type gas-insulated electric device according to the first embodiment.
【図３】 実施の形態２の三相一括形のガス絶縁電気装
置の構成図である。FIG. 3 is a configuration diagram of a three-phase package type gas-insulated electric device according to a second embodiment.
【図４】 実施の形態４の接続部の構成を示す構成図で
ある。FIG. 4 is a configuration diagram showing a configuration of a connecting portion according to a fourth embodiment.
【図５】 実施の形態５の接続部の構成を示す構成図で
ある。FIG. 5 is a configuration diagram showing a configuration of a connecting portion according to a fifth embodiment.
【図６】 主要温室効果ガスの地球温暖化係数を示す表
である。FIG. 6 is a table showing global warming potentials of major greenhouse gases.
【図７】 従来の１８７ｋＶガス絶縁電気装置の配置例
を示す図である。FIG. 7 is a diagram showing an arrangement example of a conventional 187 kV gas-insulated electric device.
１１ ガス絶縁開閉装置、１２ 絶縁スペーサ、１３
接続部、１４ 絶縁スペーサ、１５ 中間室、１６ ガ
ス絶縁送電路、１７ ブッシング、２１ ガス絶縁開閉
装置、２２ 絶縁スペーサ、２３ 接続部、２４ 絶縁
スペーサ、２５ 中間室、２６ ガス絶縁送電路、２７
ブッシング、３１ ガス絶縁開閉装置、３２ ガス区
分部材、３３ ガス絶縁送電路、４１ ガス絶縁開閉装
置、４２ 絶縁スペーサ、４３ 接続部、４４ ガス区
分部材、４５ ガス区分仕切板、４６ ブッシング、４
７ 接続タンク、４８ ガス絶縁送電路。11 gas insulated switchgear, 12 insulating spacers, 13
Connection part, 14 insulating spacers, 15 intermediate chamber, 16 gas insulated transmission line, 17 bushing, 21 gas insulated switchgear, 22 insulating spacer, 23 connection part, 24 insulating spacer, 25 intermediate chamber, 26 gas insulated transmission line, 27
Bushing, 31 gas insulated switchgear, 32 gas segmented member, 33 gas insulated transmission line, 41 gas insulated switchgear, 42 insulating spacer, 43 connection part, 44 gas segmented member, 45 gas segmented partition plate, 46 bushing, 4
7 connecting tanks, 48 gas insulated transmission lines.
フロントページの続き (56)参考文献 特開 平３−82304（ＪＰ，Ａ) 特開 昭54−8900（ＪＰ，Ａ) 特開 平５−227619（ＪＰ，Ａ) 特開 平８−47123（ＪＰ，Ａ) 特開 昭54−104585（ＪＰ，Ａ) 特開 昭53−10033（ＪＰ，Ａ) 実開 昭56−25913（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02B 13/00 - 13/08 H02G 5/06 Continuation of front page (56) Reference JP-A-3-82304 (JP, A) JP-A-54-8900 (JP, A) JP-A-5-227619 (JP, A) JP-A-8-47123 (JP , A) JP-A-54-104585 (JP, A) JP-A-53-10033 (JP, A) Actually developed 56-25913 (JP, U) (58) Fields investigated (Int.Cl. 7 , DB) Name) H02B 13/00-13/08 H02G 5/06
Claims (7)
の機器が第一の密閉容器に収容されたガス絶縁開閉装置
と、導体が第二の密閉容器に収容されたガス絶縁送電路
とが接続されたガス絶縁電気装置であって、上記ガス絶
縁開閉装置に接続部を接続し、該接続部と上記ガス絶縁
送電路との間に中間室を設け、上記接続部と上記中間室
との間および上記中間室と上記ガス絶縁送電路との間に
は絶縁スペーサを配置してガス区分し、上記ガス絶縁開
閉装置には純度９５％以上のＳＦ６ガスを充填し、上記
ガス絶縁送電路には、地球温暖化問題に影響しない絶縁
ガスを上記ガス絶縁開閉装置に充填されたＳＦ６ガスの
絶縁耐力と同等の絶縁耐力が得られる圧力で充填し、上
記中間室には上記ガス絶縁開閉装置に充填されたＳＦ６
ガスの圧力と、上記ガス絶縁送電路に充填された絶縁ガ
スの圧力の中間の圧力で、上記ガス絶縁開閉装置に充填
されたＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られ
ように窒素ガス、乾燥空気等の地球温暖化問題に影響し
ない絶縁ガスにＳＦ６ガスを混合した混合ガスを充填し
たことを特徴とするガス絶縁電気装置。1. A gas-insulated switchgear in which switchgear, disconnector, and other switchgear, transformer, and other devices are housed in a first hermetically sealed container, and a gas-insulated transfer device in which a conductor is housed in a second hermetically sealed container. A gas-insulated electric device connected to an electric circuit , wherein a connection part is connected to the gas-insulated switchgear , and the connection part and the gas-insulated device.
An intermediate chamber is provided between the power transmission path and an insulating spacer is provided between the connecting portion and the intermediate chamber and between the intermediate chamber and the gas-insulated power transmission path for gas division, and the gas-insulated opening / closing. The equipment is filled with SF 6 gas with a purity of 95% or more, and the gas-insulated power transmission line is equivalent to the dielectric strength of the SF 6 gas filled in the gas-insulated switchgear with an insulating gas that does not affect the global warming problem. SF 6 filled with the gas-insulated switchgear in the intermediate chamber is filled with a pressure that can obtain the dielectric strength of
At a pressure intermediate between the pressure of the gas and the pressure of the insulating gas filled in the gas-insulated transmission line, nitrogen is used so that the same dielectric strength as that of the SF 6 gas filled in the gas-insulated switchgear is obtained. A gas-insulated electric device, characterized in that an insulating gas such as gas or dry air that does not affect global warming problems is filled with a mixed gas of SF 6 gas.
の機器が三相一括で第一の密閉容器に収容された三相一
括形のガス絶縁開閉装置と、三相の導体が一括して第二
の密閉容器に収容された三相一括形のガス絶縁送電路と
が接続されたガス絶縁電気装置であって、上記ガス絶縁
開閉装置に接続部を接続し、該接続部と上記ガス絶縁送
電路との間に中間室を設け、上記接続部と上記中間室と
の間および中間室と上記ガス絶縁送電路との間にはそれ
ぞれ絶縁スペーサを配置してガス区分し、上記ガス絶縁
開閉装置には純度９５％以上のＳＦ６ガスを充填し、上
記ガス絶縁送電路には、地球温暖化問題に影響しない絶
縁ガスを上記ガス絶縁開閉装置に充填されたＳＦ６ ガ
スの絶縁耐力と同等の絶縁耐力が得られる圧力で充填
し、上記中間室には上記ガス絶縁開閉装置に充填された
ＳＦ６ガスの圧力と上記ガス絶縁送電路に充填された絶
縁ガスの圧力の中間の圧力で、ガス絶縁開閉装置に充填
されたＳＦ６ガスの絶縁耐力と同等の絶縁耐力が得られ
るように窒素ガス、乾燥空気等の地球温暖化問題に影響
しない絶縁ガスにＳＦ６ガスを混合した混合ガスを充填
したことを特徴とするガス絶縁電気装置。2. A gas-insulated switchgear of a three-phase package type, in which switchgear, disconnector, etc. switchgear, transformer, etc. are housed in a first closed container in a three-phase package, and a three-phase conductor is provided. A gas-insulated electric device connected to a gas-insulated transmission line of a three-phase batch type housed in a second hermetically sealed container , wherein the gas-insulated switchgear is connected to a connecting part , Gas insulated transport
An intermediate chamber is provided between the electric path and the connection portion and the intermediate chamber, and an insulating spacer is arranged between the intermediate chamber and the gas-insulated power transmission path for gas division, and the gas-insulated switchgear is provided. Is filled with SF 6 gas having a purity of 95% or more, and the gas-insulated power transmission line is equivalent to the dielectric strength of the SF 6 gas filled in the gas-insulated switchgear with an insulating gas that does not affect the global warming problem. The intermediate chamber is filled with a pressure that provides dielectric strength, and the intermediate chamber is filled with gas at a pressure intermediate between the pressure of the SF 6 gas filled in the gas-insulated switchgear and the pressure of the insulating gas filled in the gas-insulated transmission line. Filling the insulation switch device with a mixed gas of SF 6 gas mixed with insulation gas that does not affect global warming problems such as nitrogen gas and dry air so that the same dielectric strength as that of SF 6 gas can be obtained. Characterized by That the gas insulated electric apparatus.
の機器が第一の密閉容器に収容されたガス絶縁開閉装置
と、導体が第二の密閉容器に収容されたガス絶縁送電路
とが接続されたガス絶縁電気装置であって、上記ガス絶
縁開閉装置と上記ガス絶縁送電路との間には、直列に配
置した複数の中間室を設け、上記ガス絶縁開閉装置と上
記中間室との間、上記中間室相互間および上記中間室と
上記ガス絶縁送電路との間にはそれぞれ絶縁スペーサを
配置してガス区分し、それぞれの中間室に充填するガス
圧力は、ガス絶縁開閉装置に充填されたＳＦ６ガスの圧
力とガス絶縁送電路に充填された絶縁ガスの圧力の中間
の圧力で、それぞれの中間室の両端の絶縁スペーサの両
面の圧力差がほぼ等しくなるように、それぞれの中間室
の圧力を段階的に設定し、それぞれの中間室に充填する
絶縁ガスは、設定した圧力で、地球温暖化問題に影響し
ない絶縁ガスに、ガス絶縁開閉装置に充填されたＳＦ６
ガスの絶縁耐力と同等の絶縁耐力が得られるようにＳＦ
６ガスを混合した混合ガスを充填したことを特徴とする
ガス絶縁電気装置。3. Switchgear such as circuit breaker and disconnector, transformer, etc.
Gas insulated switchgear in which the above equipment is housed in a first closed container
And a gas-insulated transmission line in which the conductor is housed in a second closed container
A gas-insulated switchgear and a plurality of intermediate chambers arranged in series between the gas-insulated switchgear and the gas-insulated power transmission line , wherein the gas-insulated switchgear and the intermediate chamber are provided. Between the intermediate chambers, and between the intermediate chambers and between the intermediate chambers and the gas-insulated power transmission path, gas is divided by arranging insulating spacers. So that the pressure difference between the two surfaces of the insulating spacers at both ends of each intermediate chamber is approximately equal at the intermediate pressure between the pressure of the SF 6 gas filled in and the pressure of the insulating gas filled in the gas-insulated transmission line. of setting the pressure in the intermediate chamber stepwise, an insulating gas filled in each of the intermediate chamber at a pressure which is set in the insulating gas that does not affect the global warming, SF 6 filled in the gas insulated switchgear
SF so that the same dielectric strength as that of gas can be obtained.
You said 6 that has been filled with a mixed gas of the gas
Gas insulated electrical apparatus.
の機器が三相一括で第一の密閉容器に収容された三相一
括形のガス絶縁開閉装置と、三相の導体が一括して第二
の密閉容器に収容された三相一括形のガス絶縁送電路と
が接続されたガス絶縁電気装置であって、その接続部
は、上記第一の密閉容器と上記第二の密閉容器とを接続
する双方の接続フランジを同一直径とし、双方の接続フ
ランジの間に、双方の圧力差に耐える厚さの金属板で形
成されたガス区分仕切板に三相分の単相用絶縁スペーサ
を取り付けたガス区分部材を配置し、導体を支持してガ
ス区分した構成とし、上記ガス絶縁開閉装置には純度９
５％以上のＳＦ６ガスを充填し、上記ガス絶縁送電路に
は、地球温暖化問題に影響しない絶縁ガスを上記ガス絶
縁開閉装置に充填したＳＦ６ガスの絶縁耐力と同等の絶
縁耐力が得られる圧力で充填したことを特徴とするガス
絶縁電気装置。4. A gas insulated switchgear of a three-phase package type, in which switchgear, disconnector, etc. switchgear, transformer, etc. are housed in a first closed container in a three-phase package, and a three-phase conductor is provided. A gas-insulated electrical device connected to a three-phase batch-type gas-insulated power transmission line that is housed in a second hermetically sealed container at a time, wherein the connection portion is the first hermetically sealed container and the second Both connecting flanges that connect to the closed container have the same diameter, and for the three-phase single-phase gas partitioning plate formed of a metal plate with a thickness that can withstand the pressure difference between both connecting flanges. A gas dividing member having an insulating spacer is arranged to support the conductor to divide the gas, and the gas insulating switchgear has a purity of 9%.
5% or more of SF 6 gas is filled, and the gas-insulated transmission line has a dielectric strength equal to that of SF 6 gas filled with the insulating gas that does not affect the global warming problem in the gas-insulated switchgear. A gas-insulated electric device, which is filled at a predetermined pressure.
中間室の間および中間室とガス絶縁送電路との間に配置
された絶縁スペーサは、凸側がガス圧力の高い側になる
ように配置したことを特徴とする請求項１または請求項
２記載のガス絶縁電気装置。5. The insulating spacers arranged between the connection part connected to the gas-insulated switchgear and the intermediate chamber and between the intermediate chamber and the gas-insulated power transmission line are arranged such that the convex side is on the high gas pressure side. Claim 1 or claim characterized in that it is arranged
2. The gas insulated electric device according to 2.
間および中間室とガス絶縁送電路との間に配置された絶
縁スペーサは、凸側がガス圧力の高い側になるように配
置したことを特徴とする請求項３記載のガス絶縁電気装
置。6. A gas-insulated switchgear, an intermediate chamber, and an intermediate chamber
Between the space and the intermediate chamber and the gas-insulated transmission line.
Place the edge spacers so that the convex side is on the side with higher gas pressure.
The gas-insulated electric device according to claim 3 , wherein the gas-insulated electric device is installed.
の機器が三相一括で第一の密閉容器に収容された三相一
括形のガス絶縁開閉装置と、三相の導体が一括して第二
の密閉容器に収容された三相一括形のガス絶縁送電路と
が接続されたガス絶縁電気装置であって、その接続部
は、上記第一の密閉容器と上記第二の密閉容器とを接続
する双方の接続フランジを同一直径とし、双方の接続フ
ランジの間に、双方の圧力差に耐える厚さの金属板で形
成されたガス区分仕切板に３本の両側の上記第一の密閉
容器および第二の密閉容器の充填されたそれぞれの絶縁
ガス圧力に耐えるように構成された単相ブッシングを取
り付けたガス区分部材を配置し、導体を支持してガス区
分した構成とし、上記ガス絶縁開閉装置に純度９５％以
上のＳＦ ６ ガスを充填し、上記ガス絶縁送電路には、地
球温暖化問題に影響しない絶縁ガスを上記ガス絶縁開閉
装置に充填したＳＦ ６ ガスの絶縁耐力と同等の絶縁耐力
が得られる圧力で充填したことを特徴とするガス絶縁電
気装置。 7. Switchgear such as circuit breaker and disconnector, transformer, etc.
The equipment of three phases is stored in the first closed container in three phases
The gas-insulated switchgear with a bundled shape and the three-phase conductors
Gas-insulated transmission line of three-phase package type housed in a closed container of
A gas-insulated electrical device connected to a
Connects the first closed container and the second closed container
Both connecting flanges have the same diameter and both connecting flanges
Formed by a metal plate with a thickness that can withstand the pressure difference between the two lunges.
The above gas seals on the both sides of the gas dividing partition plate
Insulated filling of the container and the second closed container respectively
Remove a single-phase bushing configured to withstand gas pressure.
Place the attached gas division member to support the conductor and
The gas insulated switchgear has a purity of 95% or more.
Fill the above SF 6 gas,
Insulating gas that does not affect the global warming problem
Dielectric strength equivalent to that of SF 6 gas filled in equipment
The gas-insulated electricity is characterized in that it is filled at a pressure at which
Qi device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06340698A JP3507689B2 (en) | 1998-03-13 | 1998-03-13 | Gas insulated electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP06340698A JP3507689B2 (en) | 1998-03-13 | 1998-03-13 | Gas insulated electrical equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11262121A JPH11262121A (en) | 1999-09-24 |
| JP3507689B2 true JP3507689B2 (en) | 2004-03-15 |
Family
ID=13228398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP06340698A Expired - Fee Related JP3507689B2 (en) | 1998-03-13 | 1998-03-13 | Gas insulated electrical equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3507689B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101020463B1 (en) | 2004-09-29 | 2011-03-08 | 세키스이가가쿠 고교가부시키가이샤 | Plasma processing apparatus |
| JP4499005B2 (en) * | 2004-09-29 | 2010-07-07 | 積水化学工業株式会社 | Plasma processing equipment |
-
1998
- 1998-03-13 JP JP06340698A patent/JP3507689B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH11262121A (en) | 1999-09-24 |
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