JPH11144573A - Insulation equipment - Google Patents
Insulation equipmentInfo
- Publication number
- JPH11144573A JPH11144573A JP9306801A JP30680197A JPH11144573A JP H11144573 A JPH11144573 A JP H11144573A JP 9306801 A JP9306801 A JP 9306801A JP 30680197 A JP30680197 A JP 30680197A JP H11144573 A JPH11144573 A JP H11144573A
- Authority
- JP
- Japan
- Prior art keywords
- insulating
- foreign matter
- gas
- present
- liquid
- 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.)
- Pending
Links
Landscapes
- Gas-Insulated Switchgears (AREA)
Abstract
(57)【要約】
【課題】本発明は絶縁機器に関し、絶縁性のガスと絶縁
性の液体とを併用することにより低コストで絶縁信頼性
の高い絶縁機器を提供することにある。
【解決手段】図１に示すがごとく、設置タンク内に絶縁
性のガスと絶縁性の液体とを封入した構成の絶縁機器。
(57) Abstract: An object of the present invention is to provide an insulating device that is low in cost and has high insulation reliability by using an insulating gas and an insulating liquid in combination. As shown in FIG. 1, an insulating device having a configuration in which an insulating gas and an insulating liquid are sealed in an installation tank.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は絶縁機器に係り、特
に、ＧＩＳ及びＧＩＬの絶縁信頼性向上に関する。[0001] 1. Field of the Invention [0002] The present invention relates to an insulation device, and more particularly, to an improvement in insulation reliability of GIS and GIL.
【０００２】[0002]
【従来の技術】近年、用地の高騰や都市部における電力
供給量の増大に伴う変電設備の増強化の必要性から、絶
縁性及び消弧性に優れたＳＦ6 ガスを用いて、断路器，
遮断器等の変電機器を密閉容器内に収納設置し、耐環境
性とｋＶ・Ａ当りの据えつけ体積をコンパクト化した、
いわゆるガス絶縁開閉機器が普及し稼働している。この
ようなガス絶縁開閉機器は、コンパクト化，接地タンク
の露出充電部の削除等の利点がある反面、内部に導電性
異物が存在した場合にはその絶縁信頼性が著しく低下す
るという欠点があった。In recent years, the need for enhancing of substation equipment with increasing power supply amount in the rising and urban sites, using the superior SF 6 gas insulation and arc-extinguishing, disconnectors,
Substation equipment such as circuit breakers are housed and installed in a sealed container to reduce environmental resistance and installation volume per kV · A.
So-called gas-insulated switchgear has become widespread and in operation. Such a gas insulated switchgear has advantages such as downsizing and elimination of the exposed charged portion of the grounding tank, but has the disadvantage that if there is a conductive foreign substance inside, the insulation reliability is significantly reduced. Was.
【０００３】仮に機器内に異物が存在した場合でも、絶
縁コーティングにより異物の浮上を防止し無害化する方
法が採用されてきた。しかしながら、機器のコンパクト
化に伴い、絶縁コーティングだけで異物の浮上を防止す
ることは困難になってきている。従来はガス絶縁機器全
体の導電性異物に対する絶縁信頼性の向上を実現するた
めに、異物混入防止や混入異物をトラップするパーティ
クルトラップが採用されてきた。例えば、特開昭62−37
011 号公報で述べられているように、図５に示すごとく
接地タンク底面に傾斜を与えさらに、異物を捕獲する溝
を設け、異物を浮上させ接地タンク上をバウンドさせな
がらトラップする方法である。[0003] Even if foreign matter is present in the equipment, a method has been adopted in which the floating of the foreign matter is prevented and rendered harmless by an insulating coating. However, with the downsizing of the equipment, it has become difficult to prevent the floating of foreign substances only by the insulating coating. Conventionally, in order to improve the insulation reliability of the entire gas insulated device against conductive foreign substances, a particle trap for preventing foreign substances from entering and trapping foreign substances has been adopted. For example, JP-A-62-37
As described in Japanese Patent Publication No. 011, a method is provided in which the bottom surface of the ground tank is inclined as shown in FIG. 5 and a groove for capturing foreign matter is provided, and the foreign matter is floated and trapped while bounding on the ground tank.
【０００４】[0004]
【発明が解決しようとする課題】このような従来の方法
においては、課電により異物を浮上させパーティクルト
ラップまで導くことから、異物のランダムな反射による
絶縁物表面への付着，異物浮上時のインパルス絶縁，接
地タンク加工によるコストアップの問題があった。In such a conventional method, the foreign matter is caused to float by the application of electric power and guided to the particle trap. Therefore, the foreign matter adheres to the insulator surface due to random reflection, and the impulse generated when the foreign matter floats. There was a problem of cost increase due to insulation and grounding tank processing.
【０００５】[0005]
【課題を解決するための手段】導電性異物から発生する
部分放電は絶縁性ガス中と絶縁性の液体中では異なり、
後者の方が異物は部分放電を起こしづらい。また、液体
の表面張力及び粘性により、導電性異物は浮上しずら
い。そこで、本発明は、接地タンクの底面に絶縁性の液
体を封入し、絶縁性の液体に入った異物が部分放電抑制
と液体の表面張力により再びガス空間へ飛び出すことを
防止する。A partial discharge generated from a conductive foreign substance differs between an insulating gas and an insulating liquid.
In the latter case, foreign matter is less likely to cause partial discharge. In addition, the conductive foreign matter is difficult to float due to the surface tension and viscosity of the liquid. Therefore, the present invention seals the insulating liquid on the bottom surface of the grounding tank, and prevents the foreign matter that has entered the insulating liquid from jumping into the gas space again due to the suppression of partial discharge and the surface tension of the liquid.
【０００６】即ち、上述のように構成した本発明の絶縁
機器では、接地タンクの加工が不要であり機器の製造コ
ストを大幅に低減できる。また、ガス中に存在した異物
が一旦浮上した場合でも、図１に示すように異物は数回
のバウンド内で絶縁性液体に飛び込むので従来のパーテ
ィクルトラップに比べ異物が浮上している時間が非常に
短い。このように万一混入した導電性異物をコンディシ
ョニングする時間が非常に短く且つ、確実になり機器の
絶縁信頼性を向上させることができる。That is, in the insulating device of the present invention configured as described above, the processing of the grounding tank is not required, and the manufacturing cost of the device can be greatly reduced. In addition, even if the foreign matter existing in the gas once floats, as shown in FIG. 1, the foreign matter jumps into the insulating liquid within several bounces. Short. In this way, the time for conditioning the contaminated conductive foreign matter is extremely short and reliable, and the insulation reliability of the device can be improved.
【０００７】[0007]
【発明の実施の形態】図１は本発明の一実施例を示すも
のである。導体１と接地タンク２からなり、導体１と接
地タンク２との間を絶縁性ガスで絶縁したＧＩＳもしく
はＧＩＬの単相母線の中に絶縁性の液体６を封入した一
例である。仮に、導電性の異物７が絶縁性の液体の中に
存在しなかった場合でも、接地タンクが円筒であること
から浮上した異物は接地タンクの底面に集められる特性
があるため、異物は絶縁性の液体内に入る。一旦、絶縁
性の液体内に異物が入ると表面張力や部分放電抑制効果
により異物はガス空間中に再び浮上することはない。封
入する絶縁性気体として例えば、ＳＦ6 ガス，窒素，二
酸化炭素がある。また、絶縁性液体として例えば、パー
フロロカーボン，絶縁油，純水がある。FIG. 1 shows an embodiment of the present invention. This is an example in which an insulating liquid 6 is sealed in a single-phase bus of GIS or GIL, which is composed of a conductor 1 and a ground tank 2 and insulated between the conductor 1 and the ground tank 2 with an insulating gas. Even if the conductive foreign matter 7 does not exist in the insulating liquid, the foreign matter which floats up due to the cylindrical shape of the grounding tank has the property of being collected on the bottom surface of the grounding tank. Into the liquid. Once a foreign substance enters the insulating liquid, the foreign substance does not re-emerge in the gas space due to the surface tension and the effect of suppressing partial discharge. Examples of the insulating gas to be sealed include SF 6 gas, nitrogen, and carbon dioxide. Examples of the insulating liquid include perfluorocarbon, insulating oil, and pure water.
【０００８】図２は本発明の一実施例である。接地タン
ク２を縦長の楕円にすることにより、異物が接地タンク
底面に導く力を増大させ、且つ接地タンク底面の電界を
低く抑えることができるため、異物が部分放電すること
をさらに抑制することができ絶縁信頼性をより向上させ
ることができる。FIG. 2 shows an embodiment of the present invention. By making the grounding tank 2 a vertically long ellipse, the force for guiding the foreign matter to the bottom surface of the grounding tank can be increased, and the electric field at the bottom surface of the grounding tank can be kept low. Therefore, the partial discharge of the foreign matter can be further suppressed. The insulation reliability can be further improved.
【０００９】図３は本発明の一実施例である。図２の楕
円接地タンクを３相母線に適用すると円形の場合に比
べ、相間距離を短くすることができるので機器全体をコ
ンパクト化することができる。FIG. 3 shows an embodiment of the present invention. When the elliptical ground tank of FIG. 2 is applied to a three-phase bus, the distance between phases can be shortened as compared with the case of a circular shape, so that the entire device can be made compact.
【００１０】図４は本発明の一実施例である。接地タン
ク２の中に導体１を３本通した３相一括母線に適用した
一例である。従来、接地タンク２の底面電界を抑えるた
め、導体１の配置を上三角配置を採用していたが図に示
すように下三角配置にすると液体脇の接地タンクの底面
電界を低下させることができ異物の浮上をさらに抑制す
ることができるので機器の絶縁信頼性をさらに向上させ
ることができる。FIG. 4 shows an embodiment of the present invention. This is an example in which the present invention is applied to a three-phase collective bus in which three conductors 1 are passed through a grounding tank 2. Conventionally, in order to suppress the electric field at the bottom of the grounding tank 2, the conductor 1 is arranged in an upper triangular arrangement. However, as shown in FIG. Since the floating of foreign matter can be further suppressed, the insulation reliability of the device can be further improved.
【００１１】図５は従来の一実施例である。FIG. 5 shows a conventional example.
【００１２】[0012]
【発明の効果】本発明によれば、接地タンクを加工する
ことなく絶縁機器内に混入した異物を無害化でき、製造
コストの削減及び絶縁信頼性を向上させることができ
る。According to the present invention, it is possible to detoxify foreign substances mixed in the insulating equipment without processing the grounding tank, thereby reducing manufacturing costs and improving insulation reliability.
【図１】本発明の一実施例である単相母線の断面図。FIG. 1 is a sectional view of a single-phase bus according to an embodiment of the present invention.
【図２】本発明の一実施例である単相母線の断面図。FIG. 2 is a sectional view of a single-phase bus according to one embodiment of the present invention.
【図３】本発明の一実施例である３相母線の断面図。FIG. 3 is a sectional view of a three-phase bus according to an embodiment of the present invention.
【図４】本発明の一実施例である単相母線の断面図。FIG. 4 is a sectional view of a single-phase bus according to an embodiment of the present invention.
【図５】従来技術の一例を示す単相母線の側断面。FIG. 5 is a sectional side view of a single-phase bus showing an example of the prior art.
１…導体、２…接地タンク、３…パーティクルトラッ
プ、４…絶縁スペーサ、５…絶縁コーティング、６…絶
縁性の液体、７…導電性異物。DESCRIPTION OF SYMBOLS 1 ... Conductor, 2 ... Grounding tank, 3 ... Particle trap, 4 ... Insulating spacer, 5 ... Insulating coating, 6 ... Insulating liquid, 7 ... Conductive foreign matter.
Claims (4)
電圧部を支持絶縁する装置において、接地されたタンク
内に絶縁性のガスと絶縁性の液体を併用して混入したこ
とを特徴とする絶縁機器。An apparatus for supporting and insulating a high-voltage portion in a grounded tank with a solid insulator, wherein an insulating gas and an insulating liquid are mixed into the grounded tank. Insulation equipment.
用したことを特徴とする絶縁機器。2. An insulating apparatus according to claim 1, wherein said configuration is applied to a GIL.
性ガスと絶縁性液体にそれぞれSF6ガスと絶縁油もしく
はパーフロロカーボンを用いたことを特徴とする絶縁機
器。3. claimed in claim 1 or claim 2, insulated apparatus characterized by using an insulating gas and each SF 6 gas insulating liquid insulating oil or perfluorocarbon.
用したことを特徴とする絶縁機器。4. An insulating apparatus according to claim 1, wherein said configuration is applied to GIS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9306801A JPH11144573A (en) | 1997-11-10 | 1997-11-10 | Insulation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9306801A JPH11144573A (en) | 1997-11-10 | 1997-11-10 | Insulation equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11144573A true JPH11144573A (en) | 1999-05-28 |
Family
ID=17961429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9306801A Pending JPH11144573A (en) | 1997-11-10 | 1997-11-10 | Insulation equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11144573A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8675350B2 (en) | 2010-06-04 | 2014-03-18 | Mitsubishi Electric Corporation | Gas insulated switchgear |
| WO2021000552A1 (en) * | 2019-06-29 | 2021-01-07 | 平高集团有限公司 | Busbar unit and pipeline busbar |
| CN116273471A (en) * | 2023-03-08 | 2023-06-23 | 西安西电开关电气有限公司 | A petal-shaped composite particulate capture device |
-
1997
- 1997-11-10 JP JP9306801A patent/JPH11144573A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8675350B2 (en) | 2010-06-04 | 2014-03-18 | Mitsubishi Electric Corporation | Gas insulated switchgear |
| WO2021000552A1 (en) * | 2019-06-29 | 2021-01-07 | 平高集团有限公司 | Busbar unit and pipeline busbar |
| CN116273471A (en) * | 2023-03-08 | 2023-06-23 | 西安西电开关电气有限公司 | A petal-shaped composite particulate capture device |
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