JPH01308114A - Gas insulated electric apparatus - Google Patents
Gas insulated electric apparatusInfo
- Publication number
- JPH01308114A JPH01308114A JP13830688A JP13830688A JPH01308114A JP H01308114 A JPH01308114 A JP H01308114A JP 13830688 A JP13830688 A JP 13830688A JP 13830688 A JP13830688 A JP 13830688A JP H01308114 A JPH01308114 A JP H01308114A
- Authority
- JP
- Japan
- Prior art keywords
- resistor
- surge
- spiral groove
- section
- conductor
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 31
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 239000002184 metal Substances 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 239000006096 absorbing agent Substances 0.000 abstract description 5
- 230000015556 catabolic process Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 5
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013021 overheating Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
Landscapes
- Installation Of Bus-Bars (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、断路器や遮断器等の開閉器の接点部の開閉操
作時に発生ずるサージ性の過電圧を抑制したガス絶縁電
気機器に関するものでおる。[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention is directed to a gas insulation system that suppresses surge-like overvoltages that occur when opening and closing contacts of switches such as disconnectors and circuit breakers. This is related to electrical equipment.
（従来の技術）
ガス絶縁電気機器はＳＦ６カスの持つ優れた絶縁性能や
消弧能力を生かした送変電所等における開閉操作に必要
な断路器や遮断器、接地装置、計器用変成器、避雷器等
を密閉した金属容器内に収納したもので、これらの機器
はスペーサと呼ばれる絶縁支持物で支持固定されると共
に、高電圧導体によって互いに接続されている。(Conventional technology) Gas-insulated electrical equipment utilizes the excellent insulation performance and arc-extinguishing ability of SF6 slag to produce disconnectors, circuit breakers, grounding devices, instrument transformers, and lightning arresters necessary for switching operations in power transmission and substations, etc. These devices are supported and fixed by insulating supports called spacers, and are connected to each other by high-voltage conductors.
この様な送変電所等において、前記ガス絶縁電気機器に
よって系統の切替えを行う場合、遮断器おるいは断路器
等の開閉器を用いて系統間の切離しを行っているが、断
路器や遮断器を開閉する際に、系統の回路条件ならびに
これら開閉器の特性によって決まるサージ性の過電圧が
発生する。このサージの大きさは運転電圧の数倍にも達
することかおるため、スペーサやＳＦ６ガス空間におい
て絶縁破壊事故を引起こすことがあり、解決すべき大き
な問題となっている。At such power transmission and substations, when switching between systems using the gas-insulated electrical equipment, switches such as circuit breakers or disconnectors are used to disconnect the systems. When switching on and off, surge-type overvoltages are generated, which are determined by the circuit conditions of the system and the characteristics of these switches. Since the magnitude of this surge can reach several times the operating voltage, it may cause a dielectric breakdown accident in the spacer or SF6 gas space, which is a major problem that needs to be solved.
従来、この様な異常電圧を抑制するため、例えば、ＩＥ
ＥＥ Ｔｒａｎｓ、 ｏｎ Ｐｏｗｅｒ ａｎｄ Ｓｙ
ｓｔｅｍｓ、＼ＩＯ１，ＰＡＳ−１０４，Ｎｏ、５．
ｐＨ９９（Ｍａｙ １９８５）に示されている様に、ガ
ス絶縁母線の中間あるいは終端部においてインピーダン
スの整合をとることにより、異常電圧を抑制する方法や
、金属容器の表面に抵抗体を塗布することによりサージ
の持つエネルギーを吸収する試みがなされている。Conventionally, in order to suppress such abnormal voltage, for example, IE
EE Trans, on Power and Sy
stems,\IO1,PAS-104,No,5.
As shown in pH99 (May 1985), abnormal voltage can be suppressed by matching the impedance at the middle or end of the gas-insulated bus, or by applying a resistor to the surface of the metal container. Attempts are being made to absorb the energy of the surge.
（発明が解決しようとする課題）
しかしながら、サージ性の過電圧が持つ周波数成分は数
百キロヘルツから数十メガヘルツと高いことや、その波
形が個々の回路条件によって相異なるといった条件のた
めに、断路器や遮断器等の開閉器の開閉に伴って発生す
る異常電圧を充分には抑制しきれないといった問題点が
あった。(Problem to be Solved by the Invention) However, the frequency components of surge-like overvoltages are as high as hundreds of kilohertz to tens of megahertz, and the waveforms differ depending on individual circuit conditions. There has been a problem in that abnormal voltages generated due to the opening and closing of switches such as circuit breakers and circuit breakers cannot be sufficiently suppressed.
また、通常の運転電圧においては、インピーダンス整合
のために挿入する誘電体の損失や、抵抗体内に生じる渦
電流による損失のために発熱し、機器の過熱を招くとい
う問題点もあった。Furthermore, at normal operating voltages, there is a problem in that heat is generated due to loss in the dielectric inserted for impedance matching and loss due to eddy currents generated within the resistor, leading to overheating of the equipment.
本発明は以上の欠点を解消するために提案されたもので
、その目的は、断路器や遮断器等の開閉器の開閉操作に
伴って発生する異常電圧を低減し、絶縁破壊事故を未然
に防止すると共に、通常の運転電圧においても損失の極
めて少ないガス絶縁電気機器を提供することにおる。The present invention was proposed to eliminate the above-mentioned drawbacks, and its purpose is to reduce abnormal voltages that occur when switching devices such as disconnectors and circuit breakers are opened and closed, and to prevent insulation breakdown accidents from occurring. It is an object of the present invention to provide a gas insulated electric device which prevents the above problems and has extremely low loss even at normal operating voltages.
［発明の構成］
（課題を解決するための手段）
本発明は、絶縁カスを封入した金属容器内に高電圧導体
を挿通し、この高電圧導体を絶縁スペー１すで支持固定
するガス絶縁電気機器において、前記高電圧導体の外周
表面の一部に、その中心部に向かって段差部を形成し、
その段差部の外表面に高電圧導体の軸方向に螺旋状の溝
を形成し、さらに、前記段差部に抵抗体を設け、その外
周面が高電圧導体の外周面と一致するように構成したも
のである。[Structure of the Invention] (Means for Solving the Problems) The present invention provides a gas-insulated electrical system in which a high-voltage conductor is inserted into a metal container filled with insulating scum, and this high-voltage conductor is supported and fixed by an insulating space 1. In the device, a stepped portion is formed on a part of the outer peripheral surface of the high voltage conductor toward the center thereof,
A spiral groove is formed in the axial direction of the high-voltage conductor on the outer surface of the stepped portion, and a resistor is further provided in the stepped portion, and the outer circumferential surface of the resistor is configured to coincide with the outer circumferential surface of the high-voltage conductor. It is something.
（作用）
本発明のガス絶縁電気機器によれば、サージが発生した
場合、段差部に形成した螺旋状の溝による等価コイルの
インダクタンスによって、等価コイルの両端にサージ電
圧か誘起され、このクージ誘起電圧か抵抗体を伝播する
時に抵抗体によってり−ジのエネルギーが吸収される。(Function) According to the gas insulated electrical equipment of the present invention, when a surge occurs, a surge voltage is induced at both ends of the equivalent coil due to the inductance of the equivalent coil due to the spiral groove formed in the stepped portion. When a voltage propagates through a resistor, the excess energy is absorbed by the resistor.
（実施例）
以下、本発明の一実施例を図面に基づいて具体的に説明
する。(Example) Hereinafter, an example of the present invention will be specifically described based on the drawings.
本実施例の構成＊
本実施例にｄ５いては、図面に示した様に、母線である
高電圧導体１が、密閉された金属容器２の内部に、絶縁
支持物である絶縁スペーサ３によって支持固定されてい
る。また、隣接する高電圧導体１，１はその中間に配設
された絶縁スペーサ３に取付けられた接触子４を介して
互いに接続されている。さらに、金属容器２の内部には
絶縁ノｊスであるＳＦ６ガス５が封入されている。Configuration of this embodiment Fixed. Adjacent high voltage conductors 1, 1 are connected to each other via a contact 4 attached to an insulating spacer 3 disposed between them. Furthermore, SF6 gas 5, which is an insulating gas, is sealed inside the metal container 2.
また、高電圧導体１の外周表面の一部には、高電圧導体
の中心部に向かって段差部８が形成され、その段差部８
の外表面には導体の軸方向に螺旋状の溝６が成形加工さ
れている。Further, a step portion 8 is formed on a part of the outer peripheral surface of the high voltage conductor 1 toward the center of the high voltage conductor.
A spiral groove 6 is formed on the outer surface of the conductor in the axial direction of the conductor.
さらに、前記段差部８には抵抗体７が設（プられ、その
外周面が高電圧導体１の段差部か形成されていない部分
の外周面と一致するように構成されている。なお、この
抵抗体７としては、−例として、段差部８に導電性の不
織布を巻付け、それを導電性樹脂で含浸したものを用い
ることができる。Further, a resistor 7 is provided in the stepped portion 8, and its outer circumferential surface is configured to match the outer circumferential surface of the portion of the high voltage conductor 1 where the stepped portion is not formed. As the resistor 7, for example, one in which a conductive nonwoven fabric is wrapped around the stepped portion 8 and impregnated with a conductive resin can be used.
この様に高電圧導体１の外周表面に形成された段差部８
と、その外表面に形成された螺旋状の溝６及び段差部８
に配設された抵抗体７によってサージ吸収装置１０が構
成されている。The stepped portion 8 formed on the outer peripheral surface of the high voltage conductor 1 in this way
and a spiral groove 6 and a stepped portion 8 formed on its outer surface.
A surge absorbing device 10 is constituted by the resistor 7 disposed in the resistor 7 .
本実施例の作用＊
この様な構成を有ザる本実施例のガス絶縁電気機器にお
いては、以下の様にして異常電圧を低減することができ
る。即ち、通常の運転電圧においては、電流は段差部８
の外表面に形成された螺旋状の溝６の内側の高電圧導体
部１を流れる。Effects of this embodiment* In the gas-insulated electrical equipment of this embodiment having such a configuration, abnormal voltage can be reduced in the following manner. That is, at normal operating voltage, the current flows through the stepped portion 8.
The high voltage conductor 1 flows inside the spiral groove 6 formed on the outer surface of the high voltage conductor 1.
一方、断路器又は遮断器等の開閉器の開閉時には、高周
波成分を多く含む過電圧が発生するが、これは段差部８
の外表面に形成された螺旋状の溝６によって構成された
等価コイルによりその通過が阻止される。On the other hand, when a switch such as a disconnector or circuit breaker is opened or closed, overvoltage containing many high frequency components is generated, but this
Its passage is blocked by an equivalent coil constituted by a spiral groove 6 formed on the outer surface of the coil.
即ら、等価コイルのインピーダンスの大きさは、サージ
に含まれる周波数に比例するので、高周波になる程大き
な値となり、従って、螺旋状の溝６に誘起される電圧も
り一−ジに含まれる周波数か高周波になる程大きなもの
となる。That is, the magnitude of the impedance of the equivalent coil is proportional to the frequency included in the surge, so the higher the frequency, the larger the value, and therefore the frequency included in the voltage surge induced in the spiral groove 6 increases. The higher the frequency, the larger it becomes.
また、サージが高周波になる程、高電圧導体１の内部を
流れず、その表面を流れようとするため、高周波のサー
ジ電圧は段差部８の外周に配設された抵抗体７内を流れ
ることになる。その結果、抵抗体７によってサージエネ
ルギーの吸収か行われる。Furthermore, the higher the frequency of the surge, the more it tends to flow on the surface of the high-voltage conductor 1 instead of flowing inside it. become. As a result, the surge energy is absorbed by the resistor 7.
以上述べた様に、本実施例によれば、インピーダンス整
合のための誘電体を配設していないので、通常の運転電
圧に対しては損失を発生させることがなく、発熱による
機器の過熱を防止することかできる。As described above, according to this embodiment, since no dielectric material is provided for impedance matching, there is no loss at normal operating voltages, and overheating of equipment due to heat generation is prevented. It can be prevented.
また、断路器又は遮断器等の開閉器の開閉時に発生ずる
サージエネルギーのみを吸収することができるので、絶
縁破壊事故を未然に防止することができる。Further, since only the surge energy generated when opening and closing a switch such as a disconnector or a circuit breaker can be absorbed, it is possible to prevent an insulation breakdown accident.
なあ、サージ吸収装置の表面は、直接、高電界にさらさ
れるため、本装置からの放電の可能性があるが、これを
防止するためには、表面にエポキシ樹脂等を塗布したり
、突起部を作らないようにする等の対策を施せば解決す
ることができる。Since the surface of the surge absorber is directly exposed to a high electric field, there is a possibility of discharge from this device.To prevent this, it is necessary to coat the surface with epoxy resin or remove the protrusions. This problem can be solved by taking measures such as preventing it from occurring.
＊他の実施例＊
なお、本発明は上述した実施例に限定されるものではな
く、サージ吸収装置１Ｑに配設される抵抗体７の製造方
法としては、直接、高電圧導体１に導電性樹脂をプレス
成形しても良いし、また、プレス成形したＱ性樹脂を２
つに分割して段差部にはめ込んでも良い。*Other Examples* Note that the present invention is not limited to the above-mentioned embodiments, and the method for manufacturing the resistor 7 disposed in the surge absorber 1Q is to directly attach conductive material to the high voltage conductor 1. The resin may be press-molded, or the press-molded Q resin may be
It is also possible to divide it into parts and fit them into the stepped part.
また、上）ボした様に断路器又は遮断器の開閉時のサー
ジ吸収装置としてばかりでなく、一般に用いられる線路
のサージ吸収装置としても有効である。Furthermore, as mentioned above, it is effective not only as a surge absorber when opening and closing a disconnector or circuit breaker, but also as a surge absorber for commonly used lines.
し発明の効果］
以上）小べた様に、本発明によれば、高電圧導体の外周
表面の一部に、その中心部に向かって段差部を形成し、
その段差部の外表面に高電圧導体の軸方向に螺旋状の溝
を形成し、さらに、前記段差部に抵抗体を設け、その外
周面が高電圧導体の外周面と一致するように構成すると
いう簡単な手段によって、断路器や遮断器等の開閉器の
開閉操作に伴って発生する異常電圧を低減し、絶縁破壊
事故を未然に防止すると共に、通常の運転電圧において
も損失の極めて少ないガス絶縁電気機器を提供すること
ができる。[Effects of the Invention] As mentioned above, according to the present invention, a stepped portion is formed on a part of the outer peripheral surface of the high voltage conductor toward the center thereof,
A spiral groove is formed in the axial direction of the high voltage conductor on the outer surface of the stepped portion, and a resistor is further provided in the stepped portion, and the outer circumferential surface of the resistor is configured to coincide with the outer circumferential surface of the high voltage conductor. This simple method reduces the abnormal voltage that occurs when opening and closing switches such as disconnectors and circuit breakers, and prevents insulation breakdown accidents. Can provide insulated electrical equipment.
【図面の簡単な説明】
図面は本発明のガス絶縁電気機器の一実施例を示す断面
図でおる。
１・・・高電圧導体、２・・・金属容器、３・・・絶縁
スペーサ、４・・・接触子、５・・・５Ｆ１６ガス、６
・・・螺旋状の溝、７・・・抵抗体、８・・・段差部、
１０・・・サージ吸収装置。BRIEF DESCRIPTION OF THE DRAWINGS The drawings are cross-sectional views showing one embodiment of the gas insulated electrical equipment of the present invention. DESCRIPTION OF SYMBOLS 1...High voltage conductor, 2...Metal container, 3...Insulating spacer, 4...Contactor, 5...5F16 gas, 6
...Spiral groove, 7...Resistor, 8...Step part,
10...Surge absorption device.
Claims (1)
この高電圧導体を絶縁スペーサで支持固定するガス絶縁
電気機器において、 前記高電圧導体の外周表面の一部に、その中心部に向か
って段差部を形成し、その段差部の外表面に高電圧導体
の軸方向に螺旋状の溝を形成し、さらに、前記段差部に
抵抗体を設け、その外周面が高電圧導体の外周面と一致
するように構成したことを特徴とするガス絶縁電気機器
。[Claims] A high voltage conductor is inserted into a metal container filled with an insulating gas,
In gas-insulated electrical equipment in which the high-voltage conductor is supported and fixed with an insulating spacer, a stepped portion is formed on a part of the outer peripheral surface of the high-voltage conductor toward the center, and the outer surface of the stepped portion is provided with a high voltage. A gas-insulated electrical device, characterized in that a spiral groove is formed in the axial direction of the conductor, and a resistor is further provided in the stepped portion, so that the outer circumferential surface of the resistor is aligned with the outer circumferential surface of the high-voltage conductor. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13830688A JPH01308114A (en) | 1988-06-07 | 1988-06-07 | Gas insulated electric apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13830688A JPH01308114A (en) | 1988-06-07 | 1988-06-07 | Gas insulated electric apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01308114A true JPH01308114A (en) | 1989-12-12 |
Family
ID=15218793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13830688A Pending JPH01308114A (en) | 1988-06-07 | 1988-06-07 | Gas insulated electric apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01308114A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008271744A (en) * | 2007-04-24 | 2008-11-06 | Mitsubishi Electric Corp | Gas insulated electrical device |
| JP2009159757A (en) * | 2007-12-27 | 2009-07-16 | Toshiba Corp | Conductor for gas-insulating bus |
-
1988
- 1988-06-07 JP JP13830688A patent/JPH01308114A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008271744A (en) * | 2007-04-24 | 2008-11-06 | Mitsubishi Electric Corp | Gas insulated electrical device |
| JP2009159757A (en) * | 2007-12-27 | 2009-07-16 | Toshiba Corp | Conductor for gas-insulating bus |
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