JPH0265019A - Gas insulating switching device - Google Patents
Gas insulating switching deviceInfo
- Publication number
- JPH0265019A JPH0265019A JP63214179A JP21417988A JPH0265019A JP H0265019 A JPH0265019 A JP H0265019A JP 63214179 A JP63214179 A JP 63214179A JP 21417988 A JP21417988 A JP 21417988A JP H0265019 A JPH0265019 A JP H0265019A
- Authority
- JP
- Japan
- Prior art keywords
- magnetic material
- disconnector
- insulating spacer
- voltage conductor
- disposed
- 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
- 239000000696 magnetic material Substances 0.000 claims abstract description 55
- 239000004020 conductor Substances 0.000 claims abstract description 29
- 125000006850 spacer group Chemical group 0.000 claims abstract description 24
- 239000002184 metal Substances 0.000 claims abstract description 19
- 229910052751 metal Inorganic materials 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 2
- 230000000750 progressive effect Effects 0.000 abstract 2
- 239000000470 constituent Substances 0.000 abstract 1
- 229920000136 polysorbate Polymers 0.000 abstract 1
- 230000005684 electric field Effects 0.000 description 9
- 239000010408 film Substances 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000009413 insulation Methods 0.000 description 7
- 229910000808 amorphous metal alloy Inorganic materials 0.000 description 5
- 239000003822 epoxy resin Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000001629 suppression Effects 0.000 description 3
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 230000009965 odorless effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 230000001902 propagating effect Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Gas-Insulated Switchgears (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明はガス絶縁機器に係り、ガス絶縁断路器を動作さ
せた時に発生する高周波サージを抑制覆−ることかでき
るようにしたガス絶縁開閉装置に関するものである。[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to gas insulated equipment, and provides a method for suppressing and covering high frequency surges that occur when a gas insulated disconnect switch is operated. The invention relates to gas insulated switchgear.
（従来の技術）
変電所に用いられる高電圧回路の開閉装置として、近年
ガス絶縁開閉装置が広く用いられている。(Prior Art) Gas-insulated switchgears have been widely used in recent years as switchgears for high-voltage circuits used in substations.
このガス絶縁開閉装置は、母線、遮断器、断路器を始め
として、その他の付属設備を接地金属６器の中に収納し
、この接地金属容器内に封入した安定度が高く、不活性
、不燃性、無臭、無害であり、且つ、空気の２〜３倍の
絶縁耐力を有するＳＦ６カス等の絶縁性ガスで絶縁保持
し、高圧回路の開閉装置としたものである。This gas-insulated switchgear has a busbar, circuit breaker, disconnect switch, and other accessory equipment housed in six grounded metal containers, and is highly stable, inert, and non-combustible. It is insulated and maintained with an insulating gas such as SF6 scum, which is odorless, odorless, and harmless, and has a dielectric strength two to three times that of air, and is used as a switchgear for a high-voltage circuit.
この様な機器は一般に同軸構造で、その内部に発生した
サージはほとんど減衰することなく伝播する。また、断
路器や遮断器の操作により、ガス絶縁開閉装置内に高周
波サージが発生することは良く知られた事実である。特
に、断路器の操作時には、波頭の立ち上がり部分が３〜
５ｎｓで、それに続く数ＭＨｚの高周波振動の最大ピー
ク値が常時運転電圧の波高値の２倍以上（２，Ｏｐｕ以
上）のサージ電圧が発生し得る。この様なサージの急峻
な波頭部分が原因となって、オイルブッシングが絶縁破
壊事故を起こした例や、サージの波高値が原因となって
断路器極間アークから接地金属容器への地絡事故を起こ
した例が報告されている。Such equipment generally has a coaxial structure, and surges generated inside the equipment propagate with almost no attenuation. Furthermore, it is a well-known fact that high-frequency surges are generated within gas-insulated switchgear due to the operation of disconnectors and circuit breakers. In particular, when operating a disconnector, the rising part of the wave crest is
In 5 ns, a surge voltage may be generated in which the maximum peak value of the following high-frequency vibration of several MHz is more than twice (2, Opu or more) the peak value of the constant operating voltage. There are examples of dielectric breakdown accidents in oil bushings caused by the steep crest of such surges, and ground faults from arcs between the electrodes of disconnectors to grounded metal containers due to the wave height of surges. There have been reported cases of this happening.
まＩ乙これらのサージはガス絶縁開閉装置の接地系に誘
導され、様々な電波障害や低圧制御回路の破壊事故を弓
き起こす原因となっている。従ってカス絶縁開閉装置内
に発生する高周波サージを何らかの手段を用いて抑える
必要が必る。These surges are induced into the grounding system of gas-insulated switchgear, causing various radio interference and destruction of low-voltage control circuits. Therefore, it is necessary to use some means to suppress the high frequency surge generated within the cass insulation switchgear.
この様な断路器操作時に発生する高周波サージを抑える
方法として、特開昭６１−２２７３２５号公報に示され
たものがある。Japanese Patent Laid-Open No. 61-227325 discloses a method for suppressing high frequency surges generated when operating a disconnector.
即ら、第８図に示した様に、接地金属容器１内に絶縁ス
ペーサ２が取付けられ、この絶縁スペーサ２によって、
一対の固定電ｔ１４ａ、４ｂがその畑線を一致させ、且
つ、近接対向して配設されている。各固定電ｔｉｎ４ａ
、４ｂは中空であり、その内周面に接触子５ａ、５ｂが
設けられている。That is, as shown in FIG. 8, an insulating spacer 2 is installed inside a grounded metal container 1, and with this insulating spacer 2,
A pair of fixed electric currents t14a and 4b are arranged with their field wires aligned and close to each other and facing each other. Each fixed voltage tin4a
, 4b is hollow, and contacts 5a, 5b are provided on its inner peripheral surface.
また、一方の固定電極４ｂ内には、外周面を前記接触子
５ｂに接し、且つ、固定電極４ｂの軸方向に摺動可能な
可動電極６が設けられており、また、この可動電極６の
先端にはアークコンタクト８が設けられている。Furthermore, a movable electrode 6 is provided in one of the fixed electrodes 4b, the outer peripheral surface of which is in contact with the contactor 5b, and which is slidable in the axial direction of the fixed electrode 4b. An arc contact 8 is provided at the tip.
ざらに、接地金属容器１の外部には、操作機構１０が設
けられ、この操作機構１０の操作力は操作棒９を介して
前記可動電極６に伝達され、可動電極６を固定電極４ａ
方向に移動させることができるように構成され、これに
より固定電極４ａに接離できるようになっている。Roughly speaking, an operating mechanism 10 is provided outside the grounded metal container 1, and the operating force of this operating mechanism 10 is transmitted to the movable electrode 6 via the operating rod 9, and the movable electrode 6 is connected to the fixed electrode 4a.
It is configured so that it can be moved in the direction, thereby allowing it to approach and separate from the fixed electrode 4a.
また、断路器極間の左右には、固定電極４ａ。Further, fixed electrodes 4a are provided on the left and right sides between the disconnector poles.
４ｂを包囲するように、磁性材から成る円筒状の構造体
１３ａ、１３ｂが配設され、磁性材１３ａ。Cylindrical structures 13a and 13b made of a magnetic material are disposed to surround the magnetic material 13a.
１３ｂが有する大きなインダクタンス成分により、サー
ジを吸収し、断路器の外側にサージが伝播するのを防止
している。The large inductance component of 13b absorbs surges and prevents them from propagating outside the disconnector.
なお、接地金属容器１内には、絶縁ガス３か封入され、
また、固定電極４ａ、４ｂには、絶縁スペーサ２の反対
側に、周動接触子を内蔵する接続電極１２か固定され、
その内部に高電圧導体１１か摺動可能に接続されている
。Note that an insulating gas 3 is sealed in the grounded metal container 1.
Further, a connection electrode 12 having a built-in rotating contact is fixed to the fixed electrodes 4a and 4b on the opposite side of the insulating spacer 2,
A high voltage conductor 11 is slidably connected therein.
また、同様に断路器操作時に発生する高周波サージを抑
える方法として、特開昭６１−６６５１０＠公報に示さ
れたものがある。Further, as a method for similarly suppressing high frequency surges generated when operating a disconnector, there is a method disclosed in Japanese Patent Application Laid-Open No. 61-66510@.
即ち、第９図に示した様に、接地金属容器２１内に絶縁
スペーサ２２が配設され、この絶縁スペーサ２２によっ
て高電圧導体２３が絶縁支持されている。また、接地金
属容器２１内には絶縁ガス２４が封入されている。That is, as shown in FIG. 9, an insulating spacer 22 is provided within a grounded metal container 21, and a high voltage conductor 23 is insulated and supported by this insulating spacer 22. Further, an insulating gas 24 is sealed inside the grounded metal container 21 .
ざらに、高電圧導体２３の周囲には、磁性材から成る円
筒状の構造体２５が配設され、その外側にシールド２６
が取付けられ、シールド２６の一端と高電圧導体２３と
の間には、ギャップｑが形成されている。このギャップ
ｑによる絶縁効果によって、磁性材２５の周囲に１ター
ン電流が流れるのを防止している。Roughly speaking, a cylindrical structure 25 made of a magnetic material is arranged around the high voltage conductor 23, and a shield 26 is placed on the outside of the cylindrical structure 25.
is attached, and a gap q is formed between one end of the shield 26 and the high voltage conductor 23. The insulating effect of this gap q prevents one turn current from flowing around the magnetic material 25.
この様に構成された従来のガス絶縁開閉装置においては
、磁性材が有する大きなインダクタンス成分によって、
サージを吸収し、断路器サージの低減を図っている。In the conventional gas insulated switchgear configured in this way, due to the large inductance component of the magnetic material,
It absorbs surges and reduces disconnector surges.
（発明が解決しようとする課題）
しかしながら、上述した様な従来のガス絶縁開閉装置に
おいては、以下に述べる様な解決すべき課題があった。(Problems to be Solved by the Invention) However, in the conventional gas insulated switchgear as described above, there were problems to be solved as described below.
即ち、第８図に示した様なガス絶縁開閉装置においては
、断路器接点で発生したステップ状の進行波は両方向に
伝播し、最初に磁性材から成る円筒状の構造体１３ａ、
１３ｂを通過することになる。このとき、磁性材による
大ぎなインダクタンス成分により、高周波数成分につい
てはこの部分が開放端となり、進行波の２倍の電圧が発
生する。That is, in a gas insulated switchgear as shown in FIG. 8, a step-like traveling wave generated at a disconnector contact propagates in both directions, and first passes through a cylindrical structure 13a made of a magnetic material,
It will pass through 13b. At this time, due to the large inductance component caused by the magnetic material, this portion becomes an open end for high frequency components, and a voltage twice as high as that of the traveling wave is generated.
また、それに応じて、磁性材１３ａ、１３ｂの断面の同
方向にも大きな電圧が発生する。Further, correspondingly, a large voltage is also generated in the same direction of the cross section of the magnetic materials 13a and 13b.
特に、断路器極間で発生したステップ状の進行波は、そ
のままの急峻度を保って磁性材１３ａ。In particular, the step-like traveling wave generated between the poles of the disconnector maintains its steepness as it is in the magnetic material 13a.
１３ｂに侵入するので、磁性材１３ａ、１３ｂには大き
な１ターン電圧がかかり、また、周波数が高くなる程、
磁性材１３ａ、１３ｂに印加される電圧範囲か局在化し
、小さな領域に大きな電圧が印加されるようになる。13b, a large one-turn voltage is applied to the magnetic materials 13a and 13b, and the higher the frequency, the more
The voltage range applied to the magnetic materials 13a and 13b is localized, and a large voltage is applied to a small area.
上述した磁性材から成る円筒状の構造体１３ａ。A cylindrical structure 13a made of the above-mentioned magnetic material.
１３ｂは、薄い磁性材のフィルムを絶縁を保って何層も
重ねた構造が一般的でおるが、局所的に大ぎな電圧が印
加されると、たとえ、その印加時間が短くても、各フィ
ルム間の絶縁距離を短くとっているために、絶縁破壊か
起こりやすくなり、サージ抑制効果を示さなくなる。13b generally has a structure in which many layers of thin magnetic material films are stacked while maintaining insulation, but when a large voltage is locally applied, even if the application time is short, each film Because the insulation distance between them is short, dielectric breakdown is likely to occur and the surge suppression effect is no longer exhibited.
また、１ｊ″−ジ抑制効果を高めるためには、磁性材か
ら成る円筒状の構造体１３ａ、１３ｂを大きくする必要
があり、小型化か望まれるガス絶縁開閉装置としては望
ましいものではなかった。Furthermore, in order to enhance the 1j''-ji suppression effect, it is necessary to increase the size of the cylindrical structures 13a and 13b made of magnetic material, which is not desirable for a gas-insulated switchgear in which downsizing is desired.
一方、第９図に示した様なガス絶縁開閉装置においては
、接地金属容器２１の半径方向に高電圧導体２３の電圧
が印加されており、シールド２６の一端に形成したギャ
ップ０部分には、２つの同方向の電界が同時に印加され
ることになる。On the other hand, in the gas insulated switchgear as shown in FIG. 9, the voltage of the high voltage conductor 23 is applied in the radial direction of the grounded metal container 21, and the gap 0 portion formed at one end of the shield 26 is Two electric fields in the same direction will be applied simultaneously.
そのため、ギャップ９で絶縁破壊が発生し、１ターン電
流が流れると、サージ抑制効果が失われると同時に、最
初に進展したストリーマがそのままタンク側に進展して
いき、地絡事故を起こす危険性があった。Therefore, when dielectric breakdown occurs in gap 9 and one turn of current flows, the surge suppression effect is lost, and at the same time, the streamer that initially developed continues to advance toward the tank side, increasing the risk of causing a ground fault. there were.
以上の様な理由から、ギャップｑを充分大きくとること
が望まれるが、接地金属容器の大きざに限界がおるため
、ギレツプｑを充分大きくとることはできなかった。For the reasons mentioned above, it is desirable to make the gap q sufficiently large, but because there is a limit to the size of the grounded metal container, it has not been possible to make the gap q sufficiently large.
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、断路器の開閉操作に伴って発生するサー
ジを効果的に抑制することができ、しかも、信頼性が高
く小形で安価なガス絶縁開閉装置を提供することにおる
。The present invention was proposed in order to eliminate the above-mentioned drawbacks, and its purpose is to effectively suppress the surge that occurs when opening and closing a disconnector, and to be highly reliable and compact. Our objective is to provide an inexpensive gas insulated switchgear.
［発明の構成］
（課題を解決するための手段）
請求項１の発明は、絶縁ガスを封入した接地金属容器内
に、絶縁スペーサによって支持され、相対的に接離可能
な少なくとも一対の接点を有する断路器を設け、また、
前記絶縁スペーサを挟んで断路器の接点の反対側に配設
された高電圧導体の外周部に、磁性材から成る略円筒形
状の構造体を配設したことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problem) The invention of claim 1 provides at least a pair of contacts that are supported by an insulating spacer and that are movable into and out of contact with each other in a grounded metal container filled with an insulating gas. A disconnector is provided, and
The present invention is characterized in that a substantially cylindrical structure made of a magnetic material is disposed on the outer periphery of the high voltage conductor disposed on the opposite side of the contact of the disconnector with the insulating spacer in between.
また、請求項２の発明は、絶縁ガスを封入した接地金属
容器内に、高電圧導体を配置して成るガス絶縁開閉装置
において、前記高電圧導体の周囲に磁性材から成る構造
体を配置し、その外表面に抵抗体を配設し、前記抵抗体
を高電圧導体に電気的に接続したことを特徴とするもの
である。Further, the invention of claim 2 provides a gas insulated switchgear in which a high voltage conductor is arranged in a grounded metal container filled with an insulating gas, in which a structure made of a magnetic material is arranged around the high voltage conductor. , a resistor is disposed on its outer surface, and the resistor is electrically connected to a high voltage conductor.
（作用）
請求項１の発明のガス絶縁開閉装置によれば、断路器の
極間で発生した急峻なステップ状の進行波は、まず最初
に絶縁スペーサ部分に到達することになり、ステップ状
の進行波が有する急峻な成分は、絶縁スペーサに吸収さ
れる。そのため、絶縁スペーサを挾んで反対側に配設さ
れた磁性材部分に高周波数成分の電圧が印加されること
を防止できる。(Function) According to the gas insulated switchgear of the invention of claim 1, the steep step-shaped traveling wave generated between the poles of the disconnector first reaches the insulating spacer portion, and the step-shaped traveling wave occurs. The steep component of the traveling wave is absorbed by the insulating spacer. Therefore, it is possible to prevent a high frequency component voltage from being applied to the magnetic material portion disposed on the opposite side with the insulating spacer in between.
また、請求項２の発明のガス絶縁開閉装置によれば、磁
性材の外側に配設された抵抗体を、高電圧導体に接続す
ることにより、ＡＣ！圧に対してはシールド効果を示し
、磁性材部分に電界が印加されなくなる。一方、高周波
数の電圧に対しては、磁性材の周囲に抵抗を有する電流
路を形成したことになるため、１ターン電圧はすべて抵
抗体に印加される。Moreover, according to the gas insulated switchgear of the invention of claim 2, the AC! It exhibits a shielding effect against pressure, and no electric field is applied to the magnetic material portion. On the other hand, for high-frequency voltage, a current path having resistance is formed around the magnetic material, so that all one-turn voltage is applied to the resistor.
（実施例）
以下、本発明の一実施例を第１図乃至第７図に基づいて
置体的に説明する。なお、第８図及び第９図に示した従
来型と同一の部材には同一の符号を付し、説明は省略す
る。(Example) Hereinafter, an example of the present invention will be described in detail based on FIGS. 1 to 7. Note that the same members as those of the conventional type shown in FIGS. 8 and 9 are given the same reference numerals, and explanations thereof will be omitted.
■第１実施例
本実施例においては、第１図に示した様に、絶縁スペー
サ２を挟んで断路器の接点の反対側に配設された接続電
極１２に、（習動可能に嵌合された高電圧導体１１の周
囲に、磁性材から成る略円筒形状の構造体３０ａ、３０
ｂが配設されている。■First Embodiment In this embodiment, as shown in FIG. Around the high voltage conductor 11, approximately cylindrical structures 30a and 30 made of magnetic material are placed.
b is provided.
この様な構成を有する本実施例のガス絶縁開閉装置にお
いては、断路器極間で発生したステップ状の進行波は、
まず最初に絶縁スペーサ２に到達する。この絶縁スペー
サ２は比誘電率が５〜６の絶縁物で製作されているため
、ステップ状の進行波の急ｌｌｌ！な立ち上かり部分に
ついては、絶縁スペーサ２は短絡端として作用し、高周
波数成分は磁性材から成る略円筒形状の構造体３０ａ、
３０ｂ部分には伝播しない。In the gas insulated switchgear of this embodiment having such a configuration, the step-like traveling wave generated between the disconnector poles is
The insulating spacer 2 is reached first. Since this insulating spacer 2 is made of an insulator with a dielectric constant of 5 to 6, a step-like traveling wave is formed. Regarding the rising portion, the insulating spacer 2 acts as a short-circuit end, and the high frequency component is a substantially cylindrical structure 30a made of a magnetic material,
It does not propagate to the 30b portion.
即ち、磁性材から成る略円筒形状の構造体３０ａ、３Ｑ
ｂに伝播するステップ状の進行波は、立ら上かり部分が
なまるため、磁性材から成る略円筒形状の構造体３０ａ
、３０ｂの内部に、局所的に人ぎな電圧が印加されるこ
とはなくなる。その結果、磁性材が有する大きなインダ
クタンス成分によって、サージを吸収することができる
。That is, substantially cylindrical structures 30a and 3Q made of magnetic material
The step-shaped traveling wave propagating to b has a rounded rising portion, so the substantially cylindrical structure 30a made of a magnetic material
, 30b, there is no longer any possibility that an excessive voltage will be applied locally. As a result, surges can be absorbed by the large inductance component of the magnetic material.
この様に本実施例によれば、磁性材から成る略円筒形状
の構造体３０ａ、３０ｂに高周波数成分か伝播しないた
め、絶縁か°容易となり、小ざく製作することかできる
と同時に、信頼性を向上させることかできる。As described above, according to this embodiment, high frequency components do not propagate to the substantially cylindrical structures 30a and 30b made of magnetic material, making it easy to insulate, making it possible to manufacture small-sized structures, and improving reliability. can be improved.
＊他の実施例＊
なａ３、本発明は上述した実施例に限定されるものでは
なく、第１図において、断路器の接点の片側のみに、磁
性材から成る略円筒形状の構造体を配設しても良い。*Other Embodiments* A3. The present invention is not limited to the embodiments described above, and in FIG. You can also set it up.
また、第２図及び第３図に示した様に、磁性材から成る
略円筒形状の構造体３１ａ、３１ｂ・・・を複数個設置
し、断路器の接点に近い位置に配設する磁性材はど、そ
の巻付はターン数を少なくしても良い。これは、ターン
数が少ないほど絶縁か容易となり、また、断路器の接点
に近い程、より高い周波数成分を含むサージが現れるが
、より高い周波数成分はど、少ないターン数で同様な減
衰効果が得られるからでおる。In addition, as shown in FIGS. 2 and 3, a plurality of substantially cylindrical structures 31a, 31b, etc. made of magnetic material are installed, and the magnetic material is disposed near the contact point of the disconnector. However, the number of turns may be reduced for winding. This is because the smaller the number of turns, the easier it is to insulate, and the closer the contact point of the disconnector is, the more surges containing higher frequency components will appear. It's because you can get it.
ざらに、第４図に示した様に、断路器に近い位置に配設
される磁性材から成る略円筒形状の構）Ｌ体３２を、鉄
を主成分とするアモルファス合金て形成し、断路器から
遠い位置に配設される磁性材から成る略円筒形状の構造
体３３を、コバルトを主成分とするアモルファス合金で
形成しても良い。Roughly speaking, as shown in FIG. 4, an approximately cylindrical structure (L body 32) made of magnetic material disposed near the disconnector is formed of an amorphous alloy mainly composed of iron, and the disconnector is The substantially cylindrical structure 33 made of a magnetic material and disposed far from the container may be formed of an amorphous alloy containing cobalt as a main component.
なぜならば、鉄系のアモルファス合金は、低い周波数に
対しては大きな比透磁率を有するが、周波数が高くなる
と急速に比透磁率が減少するため、高周波成分に対する
絶縁設計が容易となり、断路器の接点の近くに配設する
ことができるからでおる。This is because iron-based amorphous alloys have a large relative magnetic permeability at low frequencies, but as the frequency increases, the relative magnetic permeability rapidly decreases, making it easier to design insulation against high frequency components and This is because it can be placed near the contact point.
一方、コバル１〜系のアモルファス合金は、周波数の増
大に対し・て、それほど急速に比透磁率が減少しないた
め、鉄系のアモルファス合金で抑制することができなか
った比較的低い周波数成分を抑制するために用いると効
果的であるからである。On the other hand, Kobal 1~ series amorphous alloys do not decrease their relative permeability as rapidly as the frequency increases, so they suppress relatively low frequency components that could not be suppressed with iron-based amorphous alloys. This is because it is effective when used to do so.
■第２実施例
本実施例においては、第５図に示した様に、アモルフ７
・ス合金などから成る磁性材のフィルム４０を、絶縁フ
ィルム４１と共に、高電圧導体２３の周囲に多数回巻回
し、この構造体の空間にエポキシ樹脂４２を充填する。■Second Embodiment In this embodiment, as shown in FIG.
- A film 40 of a magnetic material made of a steel alloy or the like is wound around the high voltage conductor 23 many times together with an insulating film 41, and the space of this structure is filled with epoxy resin 42.
また、その外側に不織イｔｉ ４３を配設し、ざらに、
モの外側に、抵抗体４４として、例えば炭素粉末を添加
した導電性エポキシ樹脂によるコーティングを施す。In addition, a non-woven material 43 is placed on the outside, and it has a rough texture.
The outer surface of the resistor 44 is coated with a conductive epoxy resin containing carbon powder, for example.
なあ、この導電性エポキシ樹脂から成る抵抗体４４は、
高電圧導体２３に電気的に接続され、前記磁性材フィル
ム４０の周囲に、抵抗を含む１ターン電流路を形成して
いる。By the way, this resistor 44 made of conductive epoxy resin is
It is electrically connected to the high voltage conductor 23 and forms a one-turn current path including resistance around the magnetic material film 40.
この様な構成を有する本実施例のガス絶縁開閉装置にお
いては、以下に述べる様にして、断路器サージなどの急
峻波サージを抑制することができる。In the gas insulated switchgear of this embodiment having such a configuration, steep wave surges such as disconnector surges can be suppressed as described below.
一般に、５０Ｈｚや６０１−１ｚのＡ Ｃ７４流に対し
ては、磁性材から成るフィルム４０に印加する１ターン
電圧は、数十Ｖ以下の低い値でおり、抵抗体４４はシー
ルド効果を示し、抵抗体４４の内部はすべて同電位にな
ると考えられる。Generally, for AC74 current of 50 Hz or 601-1 Hz, the one-turn voltage applied to the film 40 made of magnetic material is a low value of several tens of V or less, and the resistor 44 exhibits a shielding effect, and the resistor 44 exhibits a shielding effect. It is considered that the inside of the body 44 is all at the same potential.
しかし、周波数が数百ＫＨｚから数十ＭＨｚの断路器サ
ージに対しては、１ターン電圧が高くなるが、この電圧
は抵抗体４４に印加されることになる。ここで、抵抗体
４４の抵抗率をほぼ一様にしておけば、電界が一部の微
小部分に集中することはなく、電界分布は均一なものと
なり、長い絶縁距離を得ることができる。However, for a disconnector surge with a frequency of several hundred KHz to several tens of MHz, the one-turn voltage becomes high, and this voltage is applied to the resistor 44. Here, if the resistivity of the resistor 44 is made substantially uniform, the electric field will not be concentrated in a small part, the electric field distribution will be uniform, and a long insulation distance can be obtained.
特に、この絶縁距離を円筒形状の接地金属苔器２１の中
心軸方向に取ることができるため、これを艮くすること
が容易となるばかりでなく、高電圧導体２３が接地金属
容器２１に対して形成する電界の向きに対して、１ター
ン電圧が形成する電界の向きは、はとんどが直角方向と
なる。In particular, since this insulation distance can be taken in the direction of the center axis of the cylindrical grounded metal moss container 21, it is not only easy to reduce this distance, but also the high voltage conductor 23 is The direction of the electric field formed by one turn voltage is mostly perpendicular to the direction of the electric field formed by one turn voltage.
なお、磁性材から成る構造体は、磁性材の薄いフィルム
４０を絶縁を保って何層にも重ねて巻回しであるので、
うず電流の影響のない、高いインダクタンス１直を１琴
ることができる。Note that the structure made of magnetic material is made by winding a thin film 40 of magnetic material in many layers while maintaining insulation.
It is possible to run a single high inductance line without the influence of eddy currents.
この様に本実施例によれば、高電圧導体の周囲に巻回し
た磁性材のフィルムの外側に、抵抗体を配設することに
より、ＡＣ電圧に対してはシールド効果を示し、磁性材
部分に電界が印加されなくなる。一方、高周波数の電圧
に対しては、磁性材の周囲に抵抗を有する電流路を形成
したことになるため、１ターン電圧はすべて抵抗体に印
加されることになり、サージを効果的に抑制することが
できる。As described above, according to this embodiment, by arranging the resistor on the outside of the magnetic material film wound around the high voltage conductor, it exhibits a shielding effect against AC voltage, and the magnetic material portion No electric field is applied to the On the other hand, for high-frequency voltages, a current path with resistance is formed around the magnetic material, so all one-turn voltage is applied to the resistor, effectively suppressing surges. can do.
＊他の実施例＊
なｄ３、本発明は上述した実施例に限定されるものでは
なく、第６図に示した様に、磁性材から成る構造体５０
Ｇよ、磁性材の粉末、例えば、アモルファス合金の粉末
をエポキシ樹脂の様な絶縁性樹脂で固めて形成したもの
でも良く、その外側に、第５図に示した実施例と同様に
、不織布１３及び抵抗体４４を配設しても良い。この場
合も、第５図に示した実施例と同様の効果が得られる。*Other Embodiments* d3. The present invention is not limited to the embodiments described above, and as shown in FIG.
G, it may be formed by hardening magnetic material powder, for example, amorphous alloy powder, with an insulating resin such as epoxy resin, and on the outside thereof, as in the embodiment shown in FIG. A resistor 44 may also be provided. In this case as well, effects similar to those of the embodiment shown in FIG. 5 can be obtained.
また、第７図に示した様に、磁性材から成る構造体５０
を配設する箇所の高電圧導体２３の外径を細くし、その
溝内に磁性材から成る構造体５０、不織布４３、抵抗体
４４の順に配設し、最外側に配設される抵抗体４４の表
面が、高電圧導体２３の他の部分の表面と略一致する様
に溝成しても良い。この場合、１ターン電圧による電界
の向きは、すべて高電圧導体２３が接地金属容器２１に
対して形成する電界の向きと直角となるので、より信頼
性が向上する。Further, as shown in FIG. 7, a structure 50 made of magnetic material
The outer diameter of the high voltage conductor 23 is made thinner at the location where the high voltage conductor 23 is disposed, and a structure 50 made of a magnetic material, a nonwoven fabric 43, and a resistor 44 are disposed in this order in the groove. Grooves may be formed so that the surface of 44 substantially coincides with the surface of the other portion of high voltage conductor 23. In this case, the direction of the electric field due to the one-turn voltage is all perpendicular to the direction of the electric field formed by the high voltage conductor 23 with respect to the grounded metal container 21, so that reliability is further improved.
［発明の効果］
以上述べた様に、本発明によれば、絶縁スペーサを挟ん
で断路器の接点の反対側に配設された高電圧導体の外周
部に、磁性材から成る略円筒形状の構造体を配設するか
、あるいは、接地金属容器内に配設された高電圧導体の
周囲に、磁性材から成る構造体を配置し、その外表面に
抵抗体を配設し、この抵抗体を高電圧導体に電気的に接
続するという簡１な手段によって、断路器の開閉操作に
伴って発生するサージを効果的に抑制することができ、
しかも、信頼性が高く小形で安価なガス絶縁開閉装置を
提供することができる。[Effects of the Invention] As described above, according to the present invention, a substantially cylindrical shape made of magnetic material is attached to the outer periphery of the high voltage conductor disposed on the opposite side of the contact of the disconnector with an insulating spacer in between. Alternatively, a structure made of magnetic material is placed around a high voltage conductor placed in a grounded metal container, and a resistor is placed on the outer surface of the structure. By the simple means of electrically connecting the disconnector to a high voltage conductor, it is possible to effectively suppress the surge that occurs when the disconnector is opened and closed.
Furthermore, it is possible to provide a highly reliable, small, and inexpensive gas-insulated switchgear.
第１図は本発明による断路器近傍のガス絶縁開閉装置の
第１実施例を示す断面図、第２図乃至第４図は本発明の
第１実施例の変形例を示す断面図、第５図は本発明の第
２実施例を示す断面図、第６図及び第７図は本発明の第
２実施例の変形例を示す断面図、第８図及び第９図は本
発明の従来例を示す断面図でめる。
１・・・接地金属容器、２・・・絶縁スペーサ、３・・
・絶縁ガス、４・・・固定電極、５・・・接触子、６・
・・可動電極、８・・・アークコンタクト、９・・・操
作棒、１０・・・操作機構、１１・・・高電圧導体、１
２・・・接続電極、１３ａ、１３ｂ・・・磁性材より成
る構造体、２１・・・接地金属容器、２２・・・絶縁ス
ペーサ、２３・・・高電圧導体、２４・・・絶縁ガス、
２５・・・磁性材より成る構造体、２６・・・シールド
、３０ａ、３０ｂ・・・磁性材より成る構造体、３１ａ
、３１ｂ、３１ｃ・・・磁性材より成る構造体、３２・
・・鉄を主成分とするアモルファス合金で形成された磁
性材より成る構造体、３３・・・コバルトを主成分とす
るアモルファス合金で形成された磁性材より成る構造体
、４０・・・磁性材フィルム、４１・・・絶縁フィルム
、４２・・・エポキシ樹脂、４３・・・不織布、４４・
・・抵抗体、５０・・・磁性材より成る構造体。FIG. 1 is a cross-sectional view showing a first embodiment of a gas-insulated switchgear near a disconnector according to the present invention, FIGS. 2 to 4 are cross-sectional views showing modifications of the first embodiment of the present invention, and FIG. The figure is a sectional view showing a second embodiment of the invention, FIGS. 6 and 7 are sectional views showing a modification of the second embodiment of the invention, and FIGS. 8 and 9 are conventional examples of the invention. It is shown in a cross-sectional view. 1...Grounded metal container, 2...Insulating spacer, 3...
・Insulating gas, 4... Fixed electrode, 5... Contact, 6.
...Movable electrode, 8...Arc contact, 9...Operation rod, 10...Operation mechanism, 11...High voltage conductor, 1
2... Connection electrode, 13a, 13b... Structure made of magnetic material, 21... Grounded metal container, 22... Insulating spacer, 23... High voltage conductor, 24... Insulating gas,
25... Structure made of magnetic material, 26... Shield, 30a, 30b... Structure made of magnetic material, 31a
, 31b, 31c... structure made of magnetic material, 32.
...A structure made of a magnetic material made of an amorphous alloy whose main component is iron, 33...A structure made of a magnetic material made of an amorphous alloy whose main component is cobalt, 40...Magnetic material Film, 41... Insulating film, 42... Epoxy resin, 43... Nonwoven fabric, 44...
...Resistor, 50...Structure made of magnetic material.
Claims (2)
ーサによつて支持され、相対的に接離可能な少なくとも
一対の接点を有する断路器を設け、また、前記絶縁スペ
ーサを挟んで断路器の接点の反対側に配設された高電圧
導体の外周部に、磁性材から成る略円筒形状の構造体を
配設したことを特徴とするガス絶縁開閉装置。(1) A disconnector is provided in a grounded metal container filled with an insulating gas, and is supported by an insulating spacer and has at least one pair of contacts that can be connected to and separated from each other, and the disconnector is provided with the insulating spacer in between. A gas insulated switchgear characterized in that a substantially cylindrical structure made of a magnetic material is disposed on the outer periphery of a high voltage conductor disposed on the opposite side of the contact point.
体を配置して成るガス絶縁開閉装置において、前記高電
圧導体の周囲に磁性材から成る構造体を配置し、その外
表面に抵抗体を配設し、前記抵抗体を高電圧導体に電気
的に接続したことを特徴とするガス絶縁開閉装置。(2) In a gas-insulated switchgear in which a high-voltage conductor is arranged in a grounded metal container filled with insulating gas, a structure made of a magnetic material is arranged around the high-voltage conductor, and the outer surface of the structure is made of a resistive material. 1. A gas insulated switchgear, characterized in that the resistor is electrically connected to a high voltage conductor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63214179A JPH0265019A (en) | 1988-08-29 | 1988-08-29 | Gas insulating switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63214179A JPH0265019A (en) | 1988-08-29 | 1988-08-29 | Gas insulating switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0265019A true JPH0265019A (en) | 1990-03-05 |
Family
ID=16651545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63214179A Pending JPH0265019A (en) | 1988-08-29 | 1988-08-29 | Gas insulating switching device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0265019A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0488695A2 (en) * | 1990-11-30 | 1992-06-03 | Hitachi, Ltd. | Surge suppression in electric apparatus |
-
1988
- 1988-08-29 JP JP63214179A patent/JPH0265019A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0488695A2 (en) * | 1990-11-30 | 1992-06-03 | Hitachi, Ltd. | Surge suppression in electric apparatus |
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