JPS6252527B2 - - Google Patents
Info
- Publication number
- JPS6252527B2 JPS6252527B2 JP56073366A JP7336681A JPS6252527B2 JP S6252527 B2 JPS6252527 B2 JP S6252527B2 JP 56073366 A JP56073366 A JP 56073366A JP 7336681 A JP7336681 A JP 7336681A JP S6252527 B2 JPS6252527 B2 JP S6252527B2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- flange
- gas
- insulator
- gap
- 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
Links
- 239000012212 insulator Substances 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 8
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000005684 electric field Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000010616 electrical installation Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
- H02G5/066—Devices for maintaining distance between conductor and enclosure
- H02G5/068—Devices for maintaining distance between conductor and enclosure being part of the junction between two enclosures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/14—Supporting insulators
- H01B17/18—Supporting insulators for very heavy conductors, e.g. bus-bars, rails
Landscapes
- Installation Of Bus-Bars (AREA)
- Gas-Insulated Switchgears (AREA)
- Insulators (AREA)
- Insulating Bodies (AREA)
Description
【発明の詳細な説明】
本発明は、絶縁耐力の大きい絶縁ガスを充填し
た金属製密封ケーシングの内部に延在する導電材
料製内部導体と、上記ケーシングの２つの連続部
材の２つの組立フランジの間に設けた、上記導体
の支持絶縁体と、絶縁耐力を増加するためにケー
シングに組込んだ放電抑制装置と、を備えたガス
絶縁電気装備に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention provides an internal conductor made of a conductive material extending inside a metal sealed casing filled with an insulating gas having a high dielectric strength, and two assembly flanges of two continuous members of the casing. The present invention relates to gas-insulated electrical equipment comprising a support insulator for the conductor provided between the conductors and a discharge suppressing device incorporated in the casing to increase dielectric strength.
SF6で絶縁した閉鎖形電気設備（特にガス絶縁
開閉装置）においては、絶縁耐力は２つの部分、
即ち、高電圧導体のまわりの中央部分およびケー
シングの金属フランジの縁の近傍の部分における
電位傾度の大きさによつて限定される。後者にお
いては、フランジの曲率半径が小さく、電界は、
固体絶縁体が設けてあるので、フランジの縁で増
大される。 In closed electrical installations (especially gas insulated switchgear) insulated with SF 6 , the dielectric strength is divided into two parts:
That is, it is limited by the magnitude of the potential gradient in the central part around the high voltage conductor and in the vicinity of the edge of the metal flange of the casing. In the latter case, the radius of curvature of the flange is small and the electric field is
A solid insulator is provided so that it is increased at the edges of the flange.
本発明は、特にフランジ近傍の放電抑制装置を
具備した設備に関する。 The present invention particularly relates to equipment equipped with a discharge suppressing device near a flange.
電位分布を改善し、フランジの縁の電界を低減
するために、支持絶縁体の内部に金属製環状しや
蔽材を設置することは、すでに提案されているが
絶縁体内に金属製しや蔽材を組込んで成形を行う
場合には工程上の技術的な問題が大きく容易では
ない。 It has already been proposed to install a metal annular shield or shield inside the supporting insulator to improve the potential distribution and reduce the electric field at the edge of the flange. When molding is performed by incorporating materials, there are many technical problems in the process and it is not easy.
本発明の目的は、上記欠点を排除し、SF6ガス
の如き高絶縁耐力ガスで絶縁してあつて、簡単且
つ効果的な設計の改善された放電抑制装置を設け
ることによつて良好な絶縁耐力を有する閉鎖形電
気設備を実現することにある。 The object of the present invention is to eliminate the above-mentioned drawbacks and to provide an improved discharge suppression device which is insulated with a high dielectric strength gas such as SF 6 gas and is of simple and effective design. The objective is to realize closed electrical equipment with high strength.
この設備は、上記放電抑制装置がフランジの内
縁と共働するようケーシングの近傍に所定寸法の
間隙を置いて上記支持絶縁体に設けられた絶縁材
料製突起によつて形成してあることを特徴とす
る。 This equipment is characterized in that the discharge suppressing device is formed by a protrusion made of an insulating material provided on the supporting insulator with a gap of a predetermined size in the vicinity of the casing so as to cooperate with the inner edge of the flange. shall be.
絶縁突起をフランジの縁を被うよう軸線方向に
突出する回転対称カラーとして構成すれば有利で
ある。金属製フランジの縁を斜切し、斜切面に実
質的に平行なカラーの側面を０〜30度の角度で傾
斜させれば有利である。各金属フランジの縁を、
間隙の底面まで延びる絶縁被膜で被覆すれば好ま
しい。 It is advantageous if the insulating projection is constructed as a rotationally symmetrical collar that projects axially over the edge of the flange. It is advantageous if the edge of the metal flange is beveled and the sides of the collar substantially parallel to the beveled surface are beveled at an angle of 0 to 30 degrees. The edge of each metal flange
It is preferable to cover the gap with an insulating coating that extends to the bottom surface of the gap.
別の特徴および利点は添付の図面を参照した実
施例に関する以下の説明から明らかであろう。 Further features and advantages will become apparent from the following description of an embodiment with reference to the accompanying drawings.
図面において閉鎖形設備、例えば絶縁耐力の大
きい高圧ガス（特に六フツ化硫黄）によつて絶縁
したガス絶縁開閉装置等は、アース電位のケーシ
ング１０を有し、ケーシング内部には、高圧を印
加された少くとも１つの導体１２（特に軸線
XX′を有する管状母線）が延びている。内部導体
１２は、合成材料（例えばエポキシ樹脂）から成
つていて、ケーシング１０の２つの連続円筒部材
１６，１８の接合面内に延びる支持絶縁体１４に
よつて支持されている。支持絶縁体１４のデイス
ク状の環状周縁２４は、前記部材１６，１８の端
部の金属フランジ２６，２８の間に挿入されてい
る。絶縁体１４の環状ミゾ内に設けた密封パツキ
ン３０は、接合部を密封する。絶縁体１４の周縁
２４に設けた孔を通る組立ボルト３６はフランジ
２６，２８を結合する。絶縁体１４の半径方向部
分２０は、中央に向つて延び、導体１２を囲む拡
張部分２２を形成している。誘電率が１よりも大
きい固体絶縁体１４を設けたことによつてフラン
ジ２６，２８のゾーン内の電界が増大され、絶縁
破壊を伴う恐れのある放電が生ずる。この種の支
持部材は公知である。 In the drawings, closed equipment, such as gas-insulated switchgear insulated by high-pressure gas with high dielectric strength (especially sulfur hexafluoride), has a casing 10 at ground potential, and a high voltage is applied to the inside of the casing. At least one conductor 12 (especially axial
A tubular generatrix with XX′) extends. The inner conductor 12 is made of a synthetic material (e.g. epoxy resin) and is supported by a support insulator 14 which extends into the interface of the two continuous cylindrical members 16, 18 of the casing 10. A disc-shaped annular periphery 24 of the support insulator 14 is inserted between metal flanges 26, 28 at the ends of said members 16, 18. A sealing gasket 30 provided within the annular groove of the insulator 14 seals the joint. Assembly bolts 36 passing through holes in the periphery 24 of the insulator 14 connect the flanges 26,28. A radial portion 20 of the insulator 14 extends toward the center and forms an enlarged portion 22 surrounding the conductor 12 . The provision of solid insulator 14 with a dielectric constant greater than 1 increases the electric field in the zone of flanges 26, 28, resulting in a potential electrical discharge with dielectric breakdown. Support members of this type are known.
本発明にもとづき、支持絶縁体１４は、放電抑
制装置３８が形成されるよう構成されている。上
記放電抑制装置は各フランジ２６，２８の縁４２
を被うよう絶縁体１４の側面の両側に突出する環
状カラー４０によつて形成されている。 In accordance with the invention, support insulator 14 is configured such that a discharge suppression device 38 is formed therein. The discharge suppressing device is located at the edge 42 of each flange 26, 28.
It is formed by an annular collar 40 protruding from both sides of the side surface of the insulator 14 so as to cover the insulator 14.
環状カラー４０によつて被われた縁４２は、小
さい斜切面４６を有し、斜切面４６とケーシング
１０の壁とが成す角度は０〜30度である。斜切面
４６に向き合うカラー４０の面４４は上記斜切面
に対して実質的に平行に且つ僅かな間隔を置いて
延びており、斜切面４６と面４４との間には、
SF6ガス等の高い絶縁耐力のガスが充填された厚
さ数mm（例えば１〜９mm）の間隙４８が形成され
る。 The edge 42 covered by the annular collar 40 has a small bevel 46, the angle between the bevel 46 and the wall of the casing 10 being between 0 and 30 degrees. The surface 44 of the collar 40 facing the beveled surface 46 extends substantially parallel to said beveled surface and at a slight distance therebetween, such that between the beveled surface 46 and the surface 44:
A gap 48 having a thickness of several mm (for example, 1 to 9 mm) is formed and filled with a high dielectric strength gas such as SF 6 gas.
放電抑制装置３８の機能は下記の如くである。
設備に正常な電圧が存在する場合には、カラー４
０とフランジ２６，２８との間の間隙は、イオン
化されない。 The function of the discharge suppressing device 38 is as follows.
Color 4 if normal voltage is present in the equipment.
0 and the flanges 26, 28 are not ionized.
しかし高い過電圧、例えば雷インパルス等が印
加された場合、間隙４８内のガスはイオン化さ
れ、フランジ２６，２８の縁と同極性のイオン
が、カラー４０の面４４上に堆積する。間隙４８
内の電界は減少しイオンがカラー４０上に停滞す
ることにより間隙４８の内部における火花放電は
防止される。 However, if a high overvoltage is applied, such as a lightning impulse, the gas in the gap 48 will become ionized and ions of the same polarity as the edges of the flanges 26, 28 will be deposited on the surface 44 of the collar 40. Gap 48
The electric field within gap 48 is reduced and the ions are lodged on collar 40, thereby preventing spark discharge within gap 48.
金属フランジ２６，２８の縁４２に間隙４８の
底部まで絶縁ワニス被膜５２を被覆すれば抑制効
果を改善できる。支持絶縁体１４は、第４，５図
に示したタイプの任意の回転対称形（特に円錐台
材）とすることができる。 The suppression effect can be improved by coating the edges 42 of the metal flanges 26, 28 with an insulating varnish coating 52 up to the bottom of the gap 48. The support insulator 14 can be of any rotationally symmetrical shape (in particular a truncated cone) of the type shown in FIGS.
本発明はもちろん上述の実施例に限定されるも
のではなく、本発明の枠内において各種の設計変
更が可能である。例えばカラー４０およびフラン
ジ２６，２８の縁４２の形状は変更できる。 The present invention is of course not limited to the embodiments described above, and various design changes are possible within the framework of the present invention. For example, the shape of collar 40 and edges 42 of flanges 26, 28 can vary.
以上詳述した通り、本発明によれば、過電圧が
印加されても内部閃絡に発展することの少ないガ
ス絶縁電気設備を提供できる。 As described in detail above, according to the present invention, it is possible to provide gas-insulated electrical equipment that is less likely to develop into an internal flash fault even if an overvoltage is applied.
第１図は本発明のガス絶縁電気設備の１例を示
す部分断面図、第２図および第３図は第１図の部
分拡大図で、それぞれ絶縁カラー及びフランジの
縁を示すもの、第４図は別の実施例の部分断面
図、第５図は第４図の部分拡大図である。
１０：ケーシング、１２：内部導体、１４：支
持絶縁体、２６，２８：フランジ、３８：放電抑
制装置、４０：絶縁材料製突起部、４２：フラン
ジ内縁、４８：間隙。
FIG. 1 is a partial sectional view showing an example of gas-insulated electrical equipment of the present invention, and FIGS. 2 and 3 are partially enlarged views of FIG. The figure is a partial sectional view of another embodiment, and FIG. 5 is a partial enlarged view of FIG. 4. 10: Casing, 12: Internal conductor, 14: Support insulator, 26, 28: Flange, 38: Discharge suppressor, 40: Protrusion made of insulating material, 42: Inner edge of flange, 48: Gap.
Claims (1)
密封ケーシングの内部にのびる導電材料製内部導
体と、上記ケーシングの２つの連続部材の２つの
組立フランジの間に設けられた上記内部導体の支
持絶縁体と、上記フランジの内縁と共働するよう
ケーシングの近傍に所定の間隙を介して上記支持
絶縁体に設けられた絶縁材料製突起部によつて形
成された放電抑制装置と、より成ることを特徴と
するガス絶縁電気設備。1. An internal conductor made of a conductive material extending inside a metal sealed casing filled with an insulating gas having a high dielectric strength, and a supporting insulator for the internal conductor provided between two assembly flanges of two continuous members of the casing. and a discharge suppressing device formed by a protrusion made of an insulating material provided on the supporting insulator with a predetermined gap in the vicinity of the casing so as to cooperate with the inner edge of the flange. Gas insulated electrical equipment.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8012364A FR2483695A1 (en) | 1980-06-03 | 1980-06-03 | Jointing ring to seal envelope joints in gas filled high voltage bus=b - uses epoxy resin ring fitted round the busbar and narrowing to form gasket between the jointing flanges for sections of the metal cladding |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57110011A JPS57110011A (en) | 1982-07-08 |
| JPS6252527B2 true JPS6252527B2 (en) | 1987-11-05 |
Family
ID=9242680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56073366A Granted JPS57110011A (en) | 1980-06-03 | 1981-05-14 | Gas insulated electric facility |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS57110011A (en) |
| FR (1) | FR2483695A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6311016A (en) * | 1986-06-30 | 1988-01-18 | 三菱電機株式会社 | Gas insulated switchgear |
| SE456545B (en) * | 1986-06-30 | 1988-10-10 | Asea Ab | GAS INSULATED HIGH VOLTAGE DEVICE |
| JPH05284617A (en) * | 1992-03-27 | 1993-10-29 | Nissin Electric Co Ltd | Gas insulating opening/closing device |
| DE19916392B4 (en) * | 1999-03-31 | 2008-02-07 | Siemens Ag | Connection area to an encapsulated, gas-insulated high-voltage system |
| EP3330580A1 (en) * | 2016-12-05 | 2018-06-06 | ABB Schweiz AG | Use of a coated o-ring for a gas-insulated electric equipment |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1396983A (en) * | 1964-06-01 | 1965-04-23 | Nv | Improvements to bushing insulators for high voltage |
| DE2314675A1 (en) * | 1973-03-21 | 1974-10-03 | Siemens Ag | INSULATING BODY |
| US4038486A (en) * | 1975-06-10 | 1977-07-26 | Westinghouse Electric Corporation | Supporting insulator assembly for gas-insulated equipment |
-
1980
- 1980-06-03 FR FR8012364A patent/FR2483695A1/en active Granted
-
1981
- 1981-05-14 JP JP56073366A patent/JPS57110011A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| FR2483695A1 (en) | 1981-12-04 |
| FR2483695B1 (en) | 1984-03-30 |
| JPS57110011A (en) | 1982-07-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1388201A (en) | Trap for removing particles from fluid insulating material | |
| US3898367A (en) | Particle trap for compressed-gas insulated high voltage bus | |
| US3801725A (en) | Spacer construction for fluid-insulated transmission lines | |
| US4296274A (en) | High voltage bushing having weathershed and surrounding stress relief collar | |
| JPS6252527B2 (en) | ||
| US3812284A (en) | Electrical insulator having additional protective insulating portion | |
| US4477692A (en) | High voltage terminal bushing for electrical apparatus | |
| US3231666A (en) | Terminal bushing for ground flange mounting having a corona reducing electrostatic shield between the flange and the conductor | |
| US4202998A (en) | Air entrance bushing for gas-insulated bus | |
| US3842318A (en) | Shielded metal enclosed electrical equipment | |
| US4447671A (en) | Funnel-shaped support insulator and a high-voltage arrangement using the support insulator | |
| US3753045A (en) | Shielded metal enclosed lightning arrester | |
| JPH0279711A (en) | Gas insulation vessel | |
| US4056753A (en) | Overvoltage protecting element | |
| US3934071A (en) | Air entrance bushing for gas-insulated bus | |
| JPS6023569B2 (en) | gas insulated electrical equipment | |
| EP0080192B1 (en) | Bushing for gas-insulated electrical equipment | |
| JP3897972B2 (en) | Cable termination connection structure for electrical equipment | |
| US3178541A (en) | Envelope construction for vacuumized electric switch including means internally providing capacitive voltage division between adjacent terminals | |
| JP3585517B2 (en) | Gas insulated bushing | |
| SU866581A1 (en) | Partition sectionalized insulator | |
| JPH03222621A (en) | Gas-insulated spacer | |
| AU661291B2 (en) | High voltage connecting terminal | |
| JPS6240495Y2 (en) | ||
| JPS61137309A (en) | Gas insulated potential transformer |